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Author SHA1 Message Date
Julia Lawall
83567cee04 RDMA/core: Fix typo in comment 
Spelling mistake (triple letters) in comment.
Detected with the help of Coccinelle.

Link: https://lore.kernel.org/r/20220521111145.81697-86-Julia.Lawall@inria.fr
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
 2022-05-24 11:24:58 -03:00
Masahiro Yamada
7b4537199a kbuild: link symbol CRCs at final link, removing CONFIG_MODULE_REL_CRCS 
include/{linux,asm-generic}/export.h defines a weak symbol, __crc_*
as a placeholder.

Genksyms writes the version CRCs into the linker script, which will be
used for filling the __crc_* symbols. The linker script format depends
on CONFIG_MODULE_REL_CRCS. If it is enabled, __crc_* holds the offset
to the reference of CRC.

It is time to get rid of this complexity.

Now that modpost parses text files (.*.cmd) to collect all the CRCs,
it can generate C code that will be linked to the vmlinux or modules.

Generate a new C file, .vmlinux.export.c, which contains the CRCs of
symbols exported by vmlinux. It is compiled and linked to vmlinux in
scripts/link-vmlinux.sh.

Put the CRCs of symbols exported by modules into the existing *.mod.c
files. No additional build step is needed for modules. As before,
*.mod.c are compiled and linked to *.ko in scripts/Makefile.modfinal.

No linker magic is used here. The new C implementation works in the
same way, whether CONFIG_RELOCATABLE is enabled or not.
CONFIG_MODULE_REL_CRCS is no longer needed.

Previously, Kbuild invoked additional $(LD) to update the CRCs in
objects, but this step is unneeded too.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Tested-by: Nicolas Schier <nicolas@fjasle.eu>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com> # LLVM-14 (x86-64)
 2022-05-24 16:33:20 +09:00
Christophe Leroy
5d7c854593 livepatch: Remove klp_arch_set_pc() and asm/livepatch.h 
All three versions of klp_arch_set_pc() do exactly the same: they
call ftrace_instruction_pointer_set().

Call ftrace_instruction_pointer_set() directly and remove
klp_arch_set_pc().

As klp_arch_set_pc() was the only thing remaining in asm/livepatch.h
on x86 and s390, remove asm/livepatch.h

livepatch.h remains on powerpc but its content is exclusively used
by powerpc specific code.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Acked-by: Petr Mladek <pmladek@suse.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Miroslav Benes <mbenes@suse.cz>
Signed-off-by: Petr Mladek <pmladek@suse.com>
 2022-05-24 08:46:37 +02:00
Jakub Kicinski
677fb75253 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 
drivers/net/ethernet/cadence/macb_main.c
  5cebb40bc9 ("net: macb: Fix PTP one step sync support")
  138badbc21 ("net: macb: use NAPI for TX completion path")
https://lore.kernel.org/all/20220523111021.31489367@canb.auug.org.au/

net/smc/af_smc.c
  75c1edf23b ("net/smc: postpone sk_refcnt increment in connect()")
  3aba103006 ("net/smc: align the connect behaviour with TCP")
https://lore.kernel.org/all/20220524114408.4bf1af38@canb.auug.org.au/

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2022-05-23 21:19:17 -07:00
Linus Torvalds
143a6252e1 arm64 updates for 5.19: 
- Initial support for the ARMv9 Scalable Matrix Extension (SME). SME
   takes the approach used for vectors in SVE and extends this to provide
   architectural support for matrix operations. No KVM support yet, SME
   is disabled in guests.
 
 - Support for crashkernel reservations above ZONE_DMA via the
   'crashkernel=X,high' command line option.
 
 - btrfs search_ioctl() fix for live-lock with sub-page faults.
 
 - arm64 perf updates: support for the Hisilicon "CPA" PMU for monitoring
   coherent I/O traffic, support for Arm's CMN-650 and CMN-700
   interconnect PMUs, minor driver fixes, kerneldoc cleanup.
 
 - Kselftest updates for SME, BTI, MTE.
 
 - Automatic generation of the system register macros from a 'sysreg'
   file describing the register bitfields.
 
 - Update the type of the function argument holding the ESR_ELx register
   value to unsigned long to match the architecture register size
   (originally 32-bit but extended since ARMv8.0).
 
 - stacktrace cleanups.
 
 - ftrace cleanups.
 
 - Miscellaneous updates, most notably: arm64-specific huge_ptep_get(),
   avoid executable mappings in kexec/hibernate code, drop TLB flushing
   from get_clear_flush() (and rename it to get_clear_contig()),
   ARCH_NR_GPIO bumped to 2048 for ARCH_APPLE.
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 updates from Catalin Marinas:

 - Initial support for the ARMv9 Scalable Matrix Extension (SME).

   SME takes the approach used for vectors in SVE and extends this to
   provide architectural support for matrix operations. No KVM support
   yet, SME is disabled in guests.

 - Support for crashkernel reservations above ZONE_DMA via the
   'crashkernel=X,high' command line option.

 - btrfs search_ioctl() fix for live-lock with sub-page faults.

 - arm64 perf updates: support for the Hisilicon "CPA" PMU for
   monitoring coherent I/O traffic, support for Arm's CMN-650 and
   CMN-700 interconnect PMUs, minor driver fixes, kerneldoc cleanup.

 - Kselftest updates for SME, BTI, MTE.

 - Automatic generation of the system register macros from a 'sysreg'
   file describing the register bitfields.

 - Update the type of the function argument holding the ESR_ELx register
   value to unsigned long to match the architecture register size
   (originally 32-bit but extended since ARMv8.0).

 - stacktrace cleanups.

 - ftrace cleanups.

 - Miscellaneous updates, most notably: arm64-specific huge_ptep_get(),
   avoid executable mappings in kexec/hibernate code, drop TLB flushing
   from get_clear_flush() (and rename it to get_clear_contig()),
   ARCH_NR_GPIO bumped to 2048 for ARCH_APPLE.

* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (145 commits)
  arm64/sysreg: Generate definitions for FAR_ELx
  arm64/sysreg: Generate definitions for DACR32_EL2
  arm64/sysreg: Generate definitions for CSSELR_EL1
  arm64/sysreg: Generate definitions for CPACR_ELx
  arm64/sysreg: Generate definitions for CONTEXTIDR_ELx
  arm64/sysreg: Generate definitions for CLIDR_EL1
  arm64/sve: Move sve_free() into SVE code section
  arm64: Kconfig.platforms: Add comments
  arm64: Kconfig: Fix indentation and add comments
  arm64: mm: avoid writable executable mappings in kexec/hibernate code
  arm64: lds: move special code sections out of kernel exec segment
  arm64/hugetlb: Implement arm64 specific huge_ptep_get()
  arm64/hugetlb: Use ptep_get() to get the pte value of a huge page
  arm64: kdump: Do not allocate crash low memory if not needed
  arm64/sve: Generate ZCR definitions
  arm64/sme: Generate defintions for SVCR
  arm64/sme: Generate SMPRI_EL1 definitions
  arm64/sme: Automatically generate SMPRIMAP_EL2 definitions
  arm64/sme: Automatically generate SMIDR_EL1 defines
  arm64/sme: Automatically generate defines for SMCR
  ...
 2022-05-23 21:06:11 -07:00
Linus Torvalds
95fbef17e8 s390 updates for 5.19 merge window 
- Make use of the IBM z16 processor activity instrumentation facility
   to count cryptography operations: add a new PMU device driver so
   that perf can make use of this.
 
 - Add new IBM z16 extended counter set to cpumf support.
 
 - Add vdso randomization support.
 
 - Add missing KCSAN instrumentation to barriers and spinlocks, which
   should make s390's KCSAN support complete.
 
 - Add support for IPL-complete-control facility: notify the hypervisor
   that kexec finished work and the kernel starts.
 
 - Improve error logging for PCI.
 
 - Various small changes to workaround llvm's integrated assembler
   limitations, and one bug, to make it finally possible to compile the
   kernel with llvm's integrated assembler. This also requires to raise
   the minimum clang version to 14.0.0.
 
 - Various other small enhancements, bug fixes, and cleanups all over
   the place.
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Merge tag 's390-5.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 updates from Heiko Carstens:

 - Make use of the IBM z16 processor activity instrumentation facility
   to count cryptography operations: add a new PMU device driver so that
   perf can make use of this.

 - Add new IBM z16 extended counter set to cpumf support.

 - Add vdso randomization support.

 - Add missing KCSAN instrumentation to barriers and spinlocks, which
   should make s390's KCSAN support complete.

 - Add support for IPL-complete-control facility: notify the hypervisor
   that kexec finished work and the kernel starts.

 - Improve error logging for PCI.

 - Various small changes to workaround llvm's integrated assembler
   limitations, and one bug, to make it finally possible to compile the
   kernel with llvm's integrated assembler. This also requires to raise
   the minimum clang version to 14.0.0.

 - Various other small enhancements, bug fixes, and cleanups all over
   the place.

* tag 's390-5.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (48 commits)
  s390/head: get rid of 31 bit leftovers
  scripts/min-tool-version.sh: raise minimum clang version to 14.0.0 for s390
  s390/boot: do not emit debug info for assembly with llvm's IAS
  s390/boot: workaround llvm IAS bug
  s390/purgatory: workaround llvm's IAS limitations
  s390/entry: workaround llvm's IAS limitations
  s390/alternatives: remove padding generation code
  s390/alternatives: provide identical sized orginal/alternative sequences
  s390/cpumf: add new extended counter set for IBM z16
  s390/preempt: disable __preempt_count_add() optimization for PROFILE_ALL_BRANCHES
  s390/stp: clock_delta should be signed
  s390/stp: fix todoff size
  s390/pai: add support for cryptography counters
  entry: Rename arch_check_user_regs() to arch_enter_from_user_mode()
  s390/compat: cleanup compat_linux.h header file
  s390/entry: remove broken and not needed code
  s390/boot: convert parmarea to C
  s390/boot: convert initial lowcore to C
  s390/ptrace: move short psw definitions to ptrace header file
  s390/head: initialize all new psws
  ...
 2022-05-23 21:01:30 -07:00
Linus Torvalds
fdd8f6585c m68k updates for v5.19 
- Introduce virtual m68k machine based on Android Goldfish devices,
   - Defconfig updates,
   - Minor fixes and improvements.
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Merge tag 'm68k-for-v5.19-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k

Pull m68k updates from Geert Uytterhoeven:

  - Introduce virtual m68k machine based on Android Goldfish devices

  - defconfig updates

  - Minor fixes and improvements

* tag 'm68k-for-v5.19-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  m68k: atari: Make Atari ROM port I/O write macros return void
  m68k: math-emu: Fix dependencies of math emulation support
  m68k: math-emu: Fix typos in comments
  m68k: Wire up syscall_trace_enter/leave for m68k
  m68k: defconfig: Update defconfigs for v5.18-rc1
  m68k: Introduce a virtual m68k machine
  clocksource/drivers: Add a goldfish-timer clocksource
  rtc: goldfish: Use gf_ioread32()/gf_iowrite32()
  tty: goldfish: Introduce gf_ioread32()/gf_iowrite32()
 2022-05-23 20:56:17 -07:00
Linus Torvalds
d613060475 xen: branch for v5.19-rc1 
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Merge tag 'for-linus-5.19-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull xen updates from Juergen Gross:

 - decouple the PV interface from kernel internals in the Xen
   scsifront/scsiback pv drivers

 - harden the Xen scsifront PV driver against a malicious backend driver

 - simplify Xen PV frontend driver ring page setup

 - support Xen setups with multiple domains created at boot time to
   tolerate Xenstore coming up late

 - two small cleanup patches

* tag 'for-linus-5.19-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: (29 commits)
  xen: add support for initializing xenstore later as HVM domain
  xen: sync xs_wire.h header with upstream xen
  x86: xen: remove STACK_FRAME_NON_STANDARD from xen_cpuid
  xen-blk{back,front}: Update contact points for buffer_squeeze_duration_ms and feature_persistent
  xen/xenbus: eliminate xenbus_grant_ring()
  xen/sndfront: use xenbus_setup_ring() and xenbus_teardown_ring()
  xen/usbfront: use xenbus_setup_ring() and xenbus_teardown_ring()
  xen/scsifront: use xenbus_setup_ring() and xenbus_teardown_ring()
  xen/pcifront: use xenbus_setup_ring() and xenbus_teardown_ring()
  xen/drmfront: use xenbus_setup_ring() and xenbus_teardown_ring()
  xen/tpmfront: use xenbus_setup_ring() and xenbus_teardown_ring()
  xen/netfront: use xenbus_setup_ring() and xenbus_teardown_ring()
  xen/blkfront: use xenbus_setup_ring() and xenbus_teardown_ring()
  xen/xenbus: add xenbus_setup_ring() service function
  xen: update ring.h
  xen/shbuf: switch xen-front-pgdir-shbuf to use INVALID_GRANT_REF
  xen/dmabuf: switch gntdev-dmabuf to use INVALID_GRANT_REF
  xen/sound: switch xen_snd_front to use INVALID_GRANT_REF
  xen/drm: switch xen_drm_front to use INVALID_GRANT_REF
  xen/usb: switch xen-hcd to use INVALID_GRANT_REF
  ...
 2022-05-23 20:49:45 -07:00
Linus Torvalds
8443516da6 platform-drivers-x86 for v5.19-1 
Highlights:
  -  New drivers:
     -  Intel "In Field Scan" (IFS) support
     -  Winmate FM07/FM07P buttons
     -  Mellanox SN2201 support
  -  AMD PMC driver enhancements
  -  Lots of various other small fixes and hardware-id additions
 
 The following is an automated git shortlog grouped by driver:
 
 Documentation:
  -  In-Field Scan
 
 Documentation/ABI:
  -  Add new attributes for mlxreg-io sysfs interfaces
  -  sysfs-class-firmware-attributes: Misc. cleanups
  -  sysfs-class-firmware-attributes: Fix Sphinx errors
  -  sysfs-driver-intel_sdsi: Fix sphinx warnings
 
 acerhdf:
  -  Cleanup str_starts_with()
 
 amd-pmc:
  -  Fix build error unused-function
  -  Shuffle location of amd_pmc_get_smu_version()
  -  Avoid reading SMU version at probe time
  -  Move FCH init to first use
  -  Move SMU logging setup out of init
  -  Fix compilation without CONFIG_SUSPEND
 
 amd_hsmp:
  -  Add HSMP protocol version 5 messages
 
 asus-nb-wmi:
  -  Add keymap for MyASUS key
 
 asus-wmi:
  -  Update unknown code message
  -  Use kobj_to_dev()
  -  Fix driver not binding when fan curve control probe fails
  -  Potential buffer overflow in asus_wmi_evaluate_method_buf()
 
 barco-p50-gpio:
  -  Fix duplicate included linux/io.h
 
 dell-laptop:
  -  Add quirk entry for Latitude 7520
 
 gigabyte-wmi:
  -  Add support for Z490 AORUS ELITE AC and X570 AORUS ELITE WIFI
  -  added support for B660 GAMING X DDR4 motherboard
 
 hp-wmi:
  -  Correct code style related issues
 
 intel-hid:
  -  fix _DSM function index handling
 
 intel-uncore-freq:
  -  Prevent driver loading in guests
 
 intel_cht_int33fe:
  -  Set driver data
 
 platform/mellanox:
  -  Add support for new SN2201 system
 
 platform/surface:
  -  aggregator: Fix initialization order when compiling as builtin module
  -  gpe: Add support for Surface Pro 8
 
 platform/x86/dell:
  -  add buffer allocation/free functions for SMI calls
 
 platform/x86/intel:
  -  Fix 'rmmod pmt_telemetry' panic
  -  pmc/core: Use kobj_to_dev()
  -  pmc/core: change pmc_lpm_modes to static
 
 platform/x86/intel/ifs:
  -  Add CPU_SUP_INTEL dependency
  -  add ABI documentation for IFS
  -  Add IFS sysfs interface
  -  Add scan test support
  -  Authenticate and copy to secured memory
  -  Check IFS Image sanity
  -  Read IFS firmware image
  -  Add stub driver for In-Field Scan
 
 platform/x86/intel/sdsi:
  -  Fix bug in multi packet reads
  -  Poll on ready bit for writes
  -  Handle leaky bucket
 
 platform_data/mlxreg:
  -  Add field for notification callback
 
 pmc_atom:
  -  dont export pmc_atom_read - no modular users
  -  remove unused pmc_atom_write()
 
 samsung-laptop:
  -  use kobj_to_dev()
  -  Fix an unsigned comparison which can never be negative
 
 stop_machine:
  -  Add stop_core_cpuslocked() for per-core operations
 
 think-lmi:
  -  certificate support clean ups
 
 thinkpad_acpi:
  -  Correct dual fan probe
  -  Add a s2idle resume quirk for a number of laptops
  -  Convert btusb DMI list to quirks
 
 tools/power/x86/intel-speed-select:
  -  Fix warning for perf_cap.cpu
  -  Display error on turbo mode disabled
  -  fix build failure when using -Wl,--as-needed
 
 toshiba_acpi:
  -  use kobj_to_dev()
 
 trace:
  -  platform/x86/intel/ifs: Add trace point to track Intel IFS operations
 
 winmate-fm07-keys:
  -  Winmate FM07/FM07P buttons
 
 wmi:
  -  replace usage of found with dedicated list iterator variable
 
 x86/microcode/intel:
  -  Expose collect_cpu_info_early() for IFS
 
 x86/msr-index:
  -  Define INTEGRITY_CAPABILITIES MSR
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Merge tag 'platform-drivers-x86-v5.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86

Pull x86 platform driver updates from Hans de Goede:
 "This includes some small changes to kernel/stop_machine.c and arch/x86
  which are deps of the new Intel IFS support.

  Highlights:

   - New drivers:
       - Intel "In Field Scan" (IFS) support
       - Winmate FM07/FM07P buttons
       - Mellanox SN2201 support

   -  AMD PMC driver enhancements

   -  Lots of various other small fixes and hardware-id additions"

* tag 'platform-drivers-x86-v5.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (54 commits)
  platform/x86/intel/ifs: Add CPU_SUP_INTEL dependency
  platform/x86: intel_cht_int33fe: Set driver data
  platform/x86: intel-hid: fix _DSM function index handling
  platform/x86: toshiba_acpi: use kobj_to_dev()
  platform/x86: samsung-laptop: use kobj_to_dev()
  platform/x86: gigabyte-wmi: Add support for Z490 AORUS ELITE AC and X570 AORUS ELITE WIFI
  tools/power/x86/intel-speed-select: Fix warning for perf_cap.cpu
  tools/power/x86/intel-speed-select: Display error on turbo mode disabled
  Documentation: In-Field Scan
  platform/x86/intel/ifs: add ABI documentation for IFS
  trace: platform/x86/intel/ifs: Add trace point to track Intel IFS operations
  platform/x86/intel/ifs: Add IFS sysfs interface
  platform/x86/intel/ifs: Add scan test support
  platform/x86/intel/ifs: Authenticate and copy to secured memory
  platform/x86/intel/ifs: Check IFS Image sanity
  platform/x86/intel/ifs: Read IFS firmware image
  platform/x86/intel/ifs: Add stub driver for In-Field Scan
  stop_machine: Add stop_core_cpuslocked() for per-core operations
  x86/msr-index: Define INTEGRITY_CAPABILITIES MSR
  x86/microcode/intel: Expose collect_cpu_info_early() for IFS
  ...
 2022-05-23 20:38:39 -07:00
Linus Torvalds
3e2cbc016b - Add Raptor Lake to the set of CPU models which support splitlock 
- Make life miserable for apps using split locks by slowing them down
 considerably while the rest of the system remains responsive. The hope
 is it will hurt more and people will really fix their misaligned locks
 apps. As a result, free a TIF bit.
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Merge tag 'x86_splitlock_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 splitlock updates from Borislav Petkov:

 - Add Raptor Lake to the set of CPU models which support splitlock

 - Make life miserable for apps using split locks by slowing them down
   considerably while the rest of the system remains responsive. The
   hope is it will hurt more and people will really fix their misaligned
   locks apps. As a result, free a TIF bit.

* tag 'x86_splitlock_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/split_lock: Enable the split lock feature on Raptor Lake
  x86/split-lock: Remove unused TIF_SLD bit
  x86/split_lock: Make life miserable for split lockers
 2022-05-23 19:24:47 -07:00
Linus Torvalds
de8ac81747 - Remove all the code around GS switching on 32-bit now that it is not 
needed anymore
 
 - Other misc improvements
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Merge tag 'x86_core_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull core x86 updates from Borislav Petkov:

 - Remove all the code around GS switching on 32-bit now that it is not
   needed anymore

 - Other misc improvements

* tag 'x86_core_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  bug: Use normal relative pointers in 'struct bug_entry'
  x86/nmi: Make register_nmi_handler() more robust
  x86/asm: Merge load_gs_index()
  x86/32: Remove lazy GS macros
  ELF: Remove elf_core_copy_kernel_regs()
  x86/32: Simplify ELF_CORE_COPY_REGS
 2022-05-23 18:42:07 -07:00
Linus Torvalds
a13dc4d409 - Serious sanitization and cleanup of the whole APERF/MPERF and 
frequency invariance code along with removing the need for unnecessary IPIs
 
 - Finally remove a.out support
 
 - The usual trivial cleanups and fixes all over x86
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Merge tag 'x86_cleanups_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 cleanups from Borislav Petkov:

 - Serious sanitization and cleanup of the whole APERF/MPERF and
   frequency invariance code along with removing the need for
   unnecessary IPIs

 - Finally remove a.out support

 - The usual trivial cleanups and fixes all over x86

* tag 'x86_cleanups_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (21 commits)
  x86: Remove empty files
  x86/speculation: Add missing srbds=off to the mitigations= help text
  x86/prctl: Remove pointless task argument
  x86/aperfperf: Make it correct on 32bit and UP kernels
  x86/aperfmperf: Integrate the fallback code from show_cpuinfo()
  x86/aperfmperf: Replace arch_freq_get_on_cpu()
  x86/aperfmperf: Replace aperfmperf_get_khz()
  x86/aperfmperf: Store aperf/mperf data for cpu frequency reads
  x86/aperfmperf: Make parts of the frequency invariance code unconditional
  x86/aperfmperf: Restructure arch_scale_freq_tick()
  x86/aperfmperf: Put frequency invariance aperf/mperf data into a struct
  x86/aperfmperf: Untangle Intel and AMD frequency invariance init
  x86/aperfmperf: Separate AP/BP frequency invariance init
  x86/smp: Move APERF/MPERF code where it belongs
  x86/aperfmperf: Dont wake idle CPUs in arch_freq_get_on_cpu()
  x86/process: Fix kernel-doc warning due to a changed function name
  x86: Remove a.out support
  x86/mm: Replace nodes_weight() with nodes_empty() where appropriate
  x86: Replace cpumask_weight() with cpumask_empty() where appropriate
  x86/pkeys: Remove __arch_set_user_pkey_access() declaration
  ...
 2022-05-23 18:17:09 -07:00
Linus Torvalds
42b682a30f - A bunch of changes towards streamlining low level asm helpers' calling 
conventions so that former can be converted to C eventually
 
 - Simplify PUSH_AND_CLEAR_REGS so that it can be used at the system call
 entry paths instead of having opencoded, slightly different variants of it
 everywhere
 
 - Misc other fixes
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Merge tag 'x86_asm_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 asm updates from Borislav Petkov:

 - A bunch of changes towards streamlining low level asm helpers'
   calling conventions so that former can be converted to C eventually

 - Simplify PUSH_AND_CLEAR_REGS so that it can be used at the system
   call entry paths instead of having opencoded, slightly different
   variants of it everywhere

 - Misc other fixes

* tag 'x86_asm_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/entry: Fix register corruption in compat syscall
  objtool: Fix STACK_FRAME_NON_STANDARD reloc type
  linkage: Fix issue with missing symbol size
  x86/entry: Remove skip_r11rcx
  x86/entry: Use PUSH_AND_CLEAR_REGS for compat
  x86/entry: Simplify entry_INT80_compat()
  x86/mm: Simplify RESERVE_BRK()
  x86/entry: Convert SWAPGS to swapgs and remove the definition of SWAPGS
  x86/entry: Don't call error_entry() for XENPV
  x86/entry: Move CLD to the start of the idtentry macro
  x86/entry: Move PUSH_AND_CLEAR_REGS out of error_entry()
  x86/entry: Switch the stack after error_entry() returns
  x86/traps: Use pt_regs directly in fixup_bad_iret()
 2022-05-23 18:08:46 -07:00
Linus Torvalds
c5a3d3c01e - Remove a bunch of chicken bit options to turn off CPU features which 
are not really needed anymore
 
 - Misc fixes and cleanups
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Merge tag 'x86_cpu_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 CPU feature updates from Borislav Petkov:

 - Remove a bunch of chicken bit options to turn off CPU features which
   are not really needed anymore

 - Misc fixes and cleanups

* tag 'x86_cpu_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/speculation: Add missing prototype for unpriv_ebpf_notify()
  x86/pm: Fix false positive kmemleak report in msr_build_context()
  x86/speculation/srbds: Do not try to turn mitigation off when not supported
  x86/cpu: Remove "noclflush"
  x86/cpu: Remove "noexec"
  x86/cpu: Remove "nosmep"
  x86/cpu: Remove CONFIG_X86_SMAP and "nosmap"
  x86/cpu: Remove "nosep"
  x86/cpu: Allow feature bit names from /proc/cpuinfo in clearcpuid=
 2022-05-23 18:01:31 -07:00
Linus Torvalds
3a755ebcc2 Intel Trust Domain Extensions 
This is the Intel version of a confidential computing solution called
 Trust Domain Extensions (TDX). This series adds support to run the
 kernel as part of a TDX guest. It provides similar guest protections to
 AMD's SEV-SNP like guest memory and register state encryption, memory
 integrity protection and a lot more.
 
 Design-wise, it differs from AMD's solution considerably: it uses
 a software module which runs in a special CPU mode called (Secure
 Arbitration Mode) SEAM. As the name suggests, this module serves as sort
 of an arbiter which the confidential guest calls for services it needs
 during its lifetime.
 
 Just like AMD's SNP set, this series reworks and streamlines certain
 parts of x86 arch code so that this feature can be properly accomodated.
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Merge tag 'x86_tdx_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull Intel TDX support from Borislav Petkov:
 "Intel Trust Domain Extensions (TDX) support.

  This is the Intel version of a confidential computing solution called
  Trust Domain Extensions (TDX). This series adds support to run the
  kernel as part of a TDX guest. It provides similar guest protections
  to AMD's SEV-SNP like guest memory and register state encryption,
  memory integrity protection and a lot more.

  Design-wise, it differs from AMD's solution considerably: it uses a
  software module which runs in a special CPU mode called (Secure
  Arbitration Mode) SEAM. As the name suggests, this module serves as
  sort of an arbiter which the confidential guest calls for services it
  needs during its lifetime.

  Just like AMD's SNP set, this series reworks and streamlines certain
  parts of x86 arch code so that this feature can be properly
  accomodated"

* tag 'x86_tdx_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (34 commits)
  x86/tdx: Fix RETs in TDX asm
  x86/tdx: Annotate a noreturn function
  x86/mm: Fix spacing within memory encryption features message
  x86/kaslr: Fix build warning in KASLR code in boot stub
  Documentation/x86: Document TDX kernel architecture
  ACPICA: Avoid cache flush inside virtual machines
  x86/tdx/ioapic: Add shared bit for IOAPIC base address
  x86/mm: Make DMA memory shared for TD guest
  x86/mm/cpa: Add support for TDX shared memory
  x86/tdx: Make pages shared in ioremap()
  x86/topology: Disable CPU online/offline control for TDX guests
  x86/boot: Avoid #VE during boot for TDX platforms
  x86/boot: Set CR0.NE early and keep it set during the boot
  x86/acpi/x86/boot: Add multiprocessor wake-up support
  x86/boot: Add a trampoline for booting APs via firmware handoff
  x86/tdx: Wire up KVM hypercalls
  x86/tdx: Port I/O: Add early boot support
  x86/tdx: Port I/O: Add runtime hypercalls
  x86/boot: Port I/O: Add decompression-time support for TDX
  x86/boot: Port I/O: Allow to hook up alternative helpers
  ...
 2022-05-23 17:51:12 -07:00
Linus Torvalds
eb39e37d5c AMD SEV-SNP support 
Add to confidential guests the necessary memory integrity protection
 against malicious hypervisor-based attacks like data replay, memory
 remapping and others, thus achieving a stronger isolation from the
 hypervisor.
 
 At the core of the functionality is a new structure called a reverse
 map table (RMP) with which the guest has a say in which pages get
 assigned to it and gets notified when a page which it owns, gets
 accessed/modified under the covers so that the guest can take an
 appropriate action.
 
 In addition, add support for the whole machinery needed to launch a SNP
 guest, details of which is properly explained in each patch.
 
 And last but not least, the series refactors and improves parts of the
 previous SEV support so that the new code is accomodated properly and
 not just bolted on.
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Merge tag 'x86_sev_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull AMD SEV-SNP support from Borislav Petkov:
 "The third AMD confidential computing feature called Secure Nested
  Paging.

  Add to confidential guests the necessary memory integrity protection
  against malicious hypervisor-based attacks like data replay, memory
  remapping and others, thus achieving a stronger isolation from the
  hypervisor.

  At the core of the functionality is a new structure called a reverse
  map table (RMP) with which the guest has a say in which pages get
  assigned to it and gets notified when a page which it owns, gets
  accessed/modified under the covers so that the guest can take an
  appropriate action.

  In addition, add support for the whole machinery needed to launch a
  SNP guest, details of which is properly explained in each patch.

  And last but not least, the series refactors and improves parts of the
  previous SEV support so that the new code is accomodated properly and
  not just bolted on"

* tag 'x86_sev_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (60 commits)
  x86/entry: Fixup objtool/ibt validation
  x86/sev: Mark the code returning to user space as syscall gap
  x86/sev: Annotate stack change in the #VC handler
  x86/sev: Remove duplicated assignment to variable info
  x86/sev: Fix address space sparse warning
  x86/sev: Get the AP jump table address from secrets page
  x86/sev: Add missing __init annotations to SEV init routines
  virt: sevguest: Rename the sevguest dir and files to sev-guest
  virt: sevguest: Change driver name to reflect generic SEV support
  x86/boot: Put globals that are accessed early into the .data section
  x86/boot: Add an efi.h header for the decompressor
  virt: sevguest: Fix bool function returning negative value
  virt: sevguest: Fix return value check in alloc_shared_pages()
  x86/sev-es: Replace open-coded hlt-loop with sev_es_terminate()
  virt: sevguest: Add documentation for SEV-SNP CPUID Enforcement
  virt: sevguest: Add support to get extended report
  virt: sevguest: Add support to derive key
  virt: Add SEV-SNP guest driver
  x86/sev: Register SEV-SNP guest request platform device
  x86/sev: Provide support for SNP guest request NAEs
  ...
 2022-05-23 17:38:01 -07:00
Linus Torvalds
0be3ff0ccb - Switch ghes_edac to use the CPER error reporting routines and simplify 
the code considerably this way
 
 - Rip out the silly edac_align_ptr() contraption which was computing the
 size of the private structures of each driver and thus allowing for a
 one-shot memory allocation. This was clearly unnecessary and confusing
 so switch to simple and boring kmalloc* calls.
 
 - Last but not least, the usual garden variety of fixes, cleanups and
 improvements all over EDAC land
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Merge tag 'edac_updates_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras

Pull EDAC updates from Borislav Petkov:

 - Switch ghes_edac to use the CPER error reporting routines and
   simplify the code considerably this way

 - Rip out the silly edac_align_ptr() contraption which was computing
   the size of the private structures of each driver and thus allowing
   for a one-shot memory allocation. This was clearly unnecessary and
   confusing so switch to simple and boring kmalloc* calls.

 - Last but not least, the usual garden variety of fixes, cleanups and
   improvements all over EDAC land

* tag 'edac_updates_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras:
  EDAC/xgene: Fix typo processsors -> processors
  EDAC/i5100: Remove unused inline function i5100_nrecmema_dm_buf_id()
  EDAC: Use kcalloc()
  EDAC/ghes: Change ghes_hw from global to static
  EDAC/armada_xp: Use devm_platform_ioremap_resource()
  EDAC/synopsys: Add a SPDX identifier
  EDAC/synopsys: Add driver support for i.MX platforms
  EDAC/dmc520: Don't print an error for each unconfigured interrupt line
  EDAC/mc: Get rid of edac_align_ptr()
  EDAC/device: Sanitize edac_device_alloc_ctl_info() definition
  EDAC/device: Get rid of the silly one-shot memory allocation in edac_device_alloc_ctl_info()
  EDAC/pci: Get rid of the silly one-shot memory allocation in edac_pci_alloc_ctl_info()
  EDAC/mc: Get rid of silly one-shot struct allocation in edac_mc_alloc()
  efi/cper: Reformat CPER memory error location to more readable
  EDAC/ghes: Unify CPER memory error location reporting
  efi/cper: Add a cper_mem_err_status_str() to decode error description
  powerpc/85xx: Remove fsl,85... bindings
 2022-05-23 17:34:20 -07:00
Linus Torvalds
6e01f86fb2 Updates for timers and timekeeping core code: 
- Expose CLOCK_TAI to instrumentation to aid with TSN debugging.
 
   - Ensure that the clockevent is stopped when there is no timer armed to
     avoid pointless wakeups.
 
   - Make the sched clock frequency handling and rounding consistent.
 
   - Provide a better debugobject hint for delayed works. The timer callback
     is always the same, which makes it difficult to identify the underlying
     work. Use the work function as a hint instead.
 
   - Move the timer specific sysctl code into the timer subsystem.
 
   - The usual set of improvements and cleanups
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Merge tag 'timers-core-2022-05-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull timer and timekeeping updates from Thomas Gleixner:

 - Expose CLOCK_TAI to instrumentation to aid with TSN debugging.

 - Ensure that the clockevent is stopped when there is no timer armed to
   avoid pointless wakeups.

 - Make the sched clock frequency handling and rounding consistent.

 - Provide a better debugobject hint for delayed works. The timer
   callback is always the same, which makes it difficult to identify the
   underlying work. Use the work function as a hint instead.

 - Move the timer specific sysctl code into the timer subsystem.

 - The usual set of improvements and cleanups

* tag 'timers-core-2022-05-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  timers: Provide a better debugobjects hint for delayed works
  time/sched_clock: Fix formatting of frequency reporting code
  time/sched_clock: Use Hz as the unit for clock rate reporting below 4kHz
  time/sched_clock: Round the frequency reported to nearest rather than down
  timekeeping: Consolidate fast timekeeper
  timekeeping: Annotate ktime_get_boot_fast_ns() with data_race()
  timers/nohz: Switch to ONESHOT_STOPPED in the low-res handler when the tick is stopped
  timekeeping: Introduce fast accessor to clock tai
  tracing/timer: Add missing argument documentation of trace points
  clocksource: Replace cpumask_weight() with cpumask_empty()
  timers: Move timer sysctl into the timer code
  clockevents: Use dedicated list iterator variable
  timers: Simplify calc_index()
  timers: Initialize base::next_expiry_recalc in timers_prepare_cpu()
 2022-05-23 17:05:55 -07:00
Linus Torvalds
fcfde8a7cf Updates for interrupt core and drivers: 
Core code:
 
     - Make the managed interrupts more robust by shutting them down in the
       core code when the assigned affinity mask does not contain online
       CPUs.
 
     - Make the irq simulator chip work on RT
 
     - A small set of cpumask and power manageent cleanups
 
   Drivers:
 
     - A set of changes which mark GPIO interrupt chips immutable to prevent
       the GPIO subsystem from modifying it under the hood. This provides
       the necessary infrastructure and converts a set of GPIO and pinctrl
       drivers over.
 
     - A set of changes to make the pseudo-NMI handling for GICv3 more
       robust: a missing barrier and consistent handling of the priority
       mask.
 
     - Another set of GICv3 improvements and fixes, but nothing outstanding
 
     - The usual set of improvements and cleanups all over the place
 
     - No new irqchip drivers and not even a new device tree binding!
       100+ interrupt chips are truly enough.
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Merge tag 'irq-core-2022-05-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull interrupt handling updates from Thomas Gleixner:
 "Core code:

   - Make the managed interrupts more robust by shutting them down in
     the core code when the assigned affinity mask does not contain
     online CPUs.

   - Make the irq simulator chip work on RT

   - A small set of cpumask and power manageent cleanups

  Drivers:

   - A set of changes which mark GPIO interrupt chips immutable to
     prevent the GPIO subsystem from modifying it under the hood. This
     provides the necessary infrastructure and converts a set of GPIO
     and pinctrl drivers over.

   - A set of changes to make the pseudo-NMI handling for GICv3 more
     robust: a missing barrier and consistent handling of the priority
     mask.

   - Another set of GICv3 improvements and fixes, but nothing
     outstanding

   - The usual set of improvements and cleanups all over the place

   - No new irqchip drivers and not even a new device tree binding!
     100+ interrupt chips are truly enough"

* tag 'irq-core-2022-05-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (39 commits)
  irqchip: Add Kconfig symbols for sunxi drivers
  irqchip/gic-v3: Fix priority mask handling
  irqchip/gic-v3: Refactor ISB + EOIR at ack time
  irqchip/gic-v3: Ensure pseudo-NMIs have an ISB between ack and handling
  genirq/irq_sim: Make the irq_work always run in hard irq context
  irqchip/armada-370-xp: Do not touch Performance Counter Overflow on A375, A38x, A39x
  irqchip/gic: Improved warning about incorrect type
  irqchip/csky: Return true/false (not 1/0) from bool functions
  irqchip/imx-irqsteer: Add runtime PM support
  irqchip/imx-irqsteer: Constify irq_chip struct
  irqchip/armada-370-xp: Enable MSI affinity configuration
  irqchip/aspeed-scu-ic: Fix irq_of_parse_and_map() return value
  irqchip/aspeed-i2c-ic: Fix irq_of_parse_and_map() return value
  irqchip/sun6i-r: Use NULL for chip_data
  irqchip/xtensa-mx: Fix initial IRQ affinity in non-SMP setup
  irqchip/exiu: Fix acknowledgment of edge triggered interrupts
  irqchip/gic-v3: Claim iomem resources
  dt-bindings: interrupt-controller: arm,gic-v3: Make the v2 compat requirements explicit
  irqchip/gic-v3: Relax polling of GIC{R,D}_CTLR.RWP
  irqchip/gic-v3: Detect LPI invalidation MMIO registers
  ...
 2022-05-23 16:58:49 -07:00
Jakub Kicinski
1ef0736c07 Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 
Daniel Borkmann says:

====================
pull-request: bpf-next 2022-05-23

We've added 113 non-merge commits during the last 26 day(s) which contain
a total of 121 files changed, 7425 insertions(+), 1586 deletions(-).

The main changes are:

1) Speed up symbol resolution for kprobes multi-link attachments, from Jiri Olsa.

2) Add BPF dynamic pointer infrastructure e.g. to allow for dynamically sized ringbuf
   reservations without extra memory copies, from Joanne Koong.

3) Big batch of libbpf improvements towards libbpf 1.0 release, from Andrii Nakryiko.

4) Add BPF link iterator to traverse links via seq_file ops, from Dmitrii Dolgov.

5) Add source IP address to BPF tunnel key infrastructure, from Kaixi Fan.

6) Refine unprivileged BPF to disable only object-creating commands, from Alan Maguire.

7) Fix JIT blinding of ld_imm64 when they point to subprogs, from Alexei Starovoitov.

8) Add BPF access to mptcp_sock structures and their meta data, from Geliang Tang.

9) Add new BPF helper for access to remote CPU's BPF map elements, from Feng Zhou.

10) Allow attaching 64-bit cookie to BPF link of fentry/fexit/fmod_ret, from Kui-Feng Lee.

11) Follow-ups to typed pointer support in BPF maps, from Kumar Kartikeya Dwivedi.

12) Add busy-poll test cases to the XSK selftest suite, from Magnus Karlsson.

13) Improvements in BPF selftest test_progs subtest output, from Mykola Lysenko.

14) Fill bpf_prog_pack allocator areas with illegal instructions, from Song Liu.

15) Add generic batch operations for BPF map-in-map cases, from Takshak Chahande.

16) Make bpf_jit_enable more user friendly when permanently on 1, from Tiezhu Yang.

17) Fix an array overflow in bpf_trampoline_get_progs(), from Yuntao Wang.

====================

Link: https://lore.kernel.org/r/20220523223805.27931-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2022-05-23 16:07:14 -07:00
Jakub Kicinski
b1e6738a21 bluetooth-next pull request for net-next: 
- Add support for Realtek 8761BUV
  - Add HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN quirk
  - Add support for RTL8852C
  - Add a new PID/VID 0489/e0c8 for MT7921
  - Add support for Qualcomm WCN785x
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Merge tag 'for-net-next-2022-05-23' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next

Luiz Augusto von Dentz says:

====================
bluetooth-next pull request for net-next:

 - Add support for Realtek 8761BUV
 - Add HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN quirk
 - Add support for RTL8852C
 - Add a new PID/VID 0489/e0c8 for MT7921
 - Add support for Qualcomm WCN785x

* tag 'for-net-next-2022-05-23' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next: (26 commits)
  Bluetooth: hci_sync: use hci_skb_event() helper
  Bluetooth: eir: Add helpers for managing service data
  Bluetooth: hci_sync: Fix attempting to suspend with unfiltered passive scan
  Bluetooth: MGMT: Add conditions for setting HCI_CONN_FLAG_REMOTE_WAKEUP
  Bluetooth: btmtksdio: fix the reset takes too long
  Bluetooth: btmtksdio: fix possible FW initialization failure
  Bluetooth: btmtksdio: fix use-after-free at btmtksdio_recv_event
  Bluetooth: btbcm: Add entry for BCM4373A0 UART Bluetooth
  Bluetooth: btusb: Add a new PID/VID 0489/e0c8 for MT7921
  Bluetooth: btusb: Add 0x0bda:0x8771 Realtek 8761BUV devices
  Bluetooth: btusb: Set HCI_QUIRK_BROKEN_ERR_DATA_REPORTING for QCA
  Bluetooth: core: Fix missing power_on work cancel on HCI close
  Bluetooth: btusb: add support for Qualcomm WCN785x
  Bluetooth: protect le accept and resolv lists with hdev->lock
  Bluetooth: use hdev lock for accept_list and reject_list in conn req
  Bluetooth: use hdev lock in activate_scan for hci_is_adv_monitoring
  Bluetooth: btrtl: Add support for RTL8852C
  Bluetooth: btusb: Set HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN for QCA
  Bluetooth: Print broken quirks
  Bluetooth: HCI: Add HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN quirk
  ...
====================

Link: https://lore.kernel.org/r/20220523204151.3327345-1-luiz.dentz@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2022-05-23 14:36:36 -07:00
Joanne Koong
34d4ef5775 bpf: Add dynptr data slices 
This patch adds a new helper function

void *bpf_dynptr_data(struct bpf_dynptr *ptr, u32 offset, u32 len);

which returns a pointer to the underlying data of a dynptr. *len*
must be a statically known value. The bpf program may access the returned
data slice as a normal buffer (eg can do direct reads and writes), since
the verifier associates the length with the returned pointer, and
enforces that no out of bounds accesses occur.

Signed-off-by: Joanne Koong <joannelkoong@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20220523210712.3641569-6-joannelkoong@gmail.com
 2022-05-23 14:31:28 -07:00
Joanne Koong
13bbbfbea7 bpf: Add bpf_dynptr_read and bpf_dynptr_write 
This patch adds two helper functions, bpf_dynptr_read and
bpf_dynptr_write:

long bpf_dynptr_read(void *dst, u32 len, struct bpf_dynptr *src, u32 offset);

long bpf_dynptr_write(struct bpf_dynptr *dst, u32 offset, void *src, u32 len);

The dynptr passed into these functions must be valid dynptrs that have
been initialized.

Signed-off-by: Joanne Koong <joannelkoong@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20220523210712.3641569-5-joannelkoong@gmail.com
 2022-05-23 14:31:28 -07:00
Joanne Koong
bc34dee65a bpf: Dynptr support for ring buffers 
Currently, our only way of writing dynamically-sized data into a ring
buffer is through bpf_ringbuf_output but this incurs an extra memcpy
cost. bpf_ringbuf_reserve + bpf_ringbuf_commit avoids this extra
memcpy, but it can only safely support reservation sizes that are
statically known since the verifier cannot guarantee that the bpf
program won’t access memory outside the reserved space.

The bpf_dynptr abstraction allows for dynamically-sized ring buffer
reservations without the extra memcpy.

There are 3 new APIs:

long bpf_ringbuf_reserve_dynptr(void *ringbuf, u32 size, u64 flags, struct bpf_dynptr *ptr);
void bpf_ringbuf_submit_dynptr(struct bpf_dynptr *ptr, u64 flags);
void bpf_ringbuf_discard_dynptr(struct bpf_dynptr *ptr, u64 flags);

These closely follow the functionalities of the original ringbuf APIs.
For example, all ringbuffer dynptrs that have been reserved must be
either submitted or discarded before the program exits.

Signed-off-by: Joanne Koong <joannelkoong@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: David Vernet <void@manifault.com>
Link: https://lore.kernel.org/bpf/20220523210712.3641569-4-joannelkoong@gmail.com
 2022-05-23 14:31:28 -07:00
Joanne Koong
263ae152e9 bpf: Add bpf_dynptr_from_mem for local dynptrs 
This patch adds a new api bpf_dynptr_from_mem:

long bpf_dynptr_from_mem(void *data, u32 size, u64 flags, struct bpf_dynptr *ptr);

which initializes a dynptr to point to a bpf program's local memory. For now
only local memory that is of reg type PTR_TO_MAP_VALUE is supported.

Signed-off-by: Joanne Koong <joannelkoong@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20220523210712.3641569-3-joannelkoong@gmail.com
 2022-05-23 14:31:24 -07:00
Joanne Koong
97e03f5210 bpf: Add verifier support for dynptrs 
This patch adds the bulk of the verifier work for supporting dynamic
pointers (dynptrs) in bpf.

A bpf_dynptr is opaque to the bpf program. It is a 16-byte structure
defined internally as:

struct bpf_dynptr_kern {
    void *data;
    u32 size;
    u32 offset;
} __aligned(8);

The upper 8 bits of *size* is reserved (it contains extra metadata about
read-only status and dynptr type). Consequently, a dynptr only supports
memory less than 16 MB.

There are different types of dynptrs (eg malloc, ringbuf, ...). In this
patchset, the most basic one, dynptrs to a bpf program's local memory,
is added. For now only local memory that is of reg type PTR_TO_MAP_VALUE
is supported.

In the verifier, dynptr state information will be tracked in stack
slots. When the program passes in an uninitialized dynptr
(ARG_PTR_TO_DYNPTR | MEM_UNINIT), the stack slots corresponding
to the frame pointer where the dynptr resides at are marked
STACK_DYNPTR. For helper functions that take in initialized dynptrs (eg
bpf_dynptr_read + bpf_dynptr_write which are added later in this
patchset), the verifier enforces that the dynptr has been initialized
properly by checking that their corresponding stack slots have been
marked as STACK_DYNPTR.

The 6th patch in this patchset adds test cases that the verifier should
successfully reject, such as for example attempting to use a dynptr
after doing a direct write into it inside the bpf program.

Signed-off-by: Joanne Koong <joannelkoong@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: David Vernet <void@manifault.com>
Link: https://lore.kernel.org/bpf/20220523210712.3641569-2-joannelkoong@gmail.com
 2022-05-23 14:30:17 -07:00
Linus Torvalds
8a32f81a89 ata changes for 5.19-rc1 
For this cycle, the libata.force kernel parameter changes stand out.
 Beside that, some small cleanups in various drivers. In more details:
 
 * Changes to the pata_mpc52xx driver in preparation for powerpc's
   asm/prom.h cleanup, from Christophe.
 
 * Improved ATA command allocation, from John.
 
 * Various small cleanups to the pata_via, pata_sil680, pata_ftide010,
   sata_gemini, ahci_brcm drivers and to libata-core, from Sergey, Diego,
   Ruyi, Mighao and Jiabing.
 
 * Add support for the RZ/G2H SoC to the rcar-sata driver, from Lad.
 
 * AHCI RAID ID cleanup, from Dan.
 
 * Improvement to the libata.force kernel parameter to allow most horkage
   flags to be manually forced for debugging drive issues in the field
   without needing recompiling a kernel, from me.
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Merge tag 'ata-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata

Pull ata updates from Damien Le Moal:
 "For this cycle, the libata.force kernel parameter changes stand out.
  Beside that, some small cleanups in various drivers. In more detail:

   - Changes to the pata_mpc52xx driver in preparation for powerpc's
     asm/prom.h cleanup, from Christophe.

   - Improved ATA command allocation, from John.

   - Various small cleanups to the pata_via, pata_sil680, pata_ftide010,
     sata_gemini, ahci_brcm drivers and to libata-core, from Sergey,
     Diego, Ruyi, Mighao and Jiabing.

   - Add support for the RZ/G2H SoC to the rcar-sata driver, from Lad.

   - AHCI RAID ID cleanup, from Dan.

   - Improvement to the libata.force kernel parameter to allow most
     horkage flags to be manually forced for debugging drive issues in
     the field without needing recompiling a kernel, from me"

* tag 'ata-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata:
  ata: pata_ftide010: Remove unneeded ERROR check before clk_disable_unprepare
  doc: admin-guide: Update libata kernel parameters
  ata: libata-core: Allow forcing most horkage flags
  ata: libata-core: Improve link flags forced settings
  ata: libata-core: Refactor force_tbl definition
  ata: libata-core: cleanup ata_device_blacklist
  ata: simplify the return expression of brcm_ahci_remove
  ata: Make use of the helper function devm_platform_ioremap_resource()
  ata: libata-core: replace "its" with "it is"
  ahci: Add a generic 'controller2' RAID id
  dt-bindings: ata: renesas,rcar-sata: Add r8a774e1 support
  ata: pata_via: fix sloppy typing in via_do_set_mode()
  ata: pata_sil680: fix result type of sil680_sel{dev|reg}()
  ata: libata-core: fix parameter type in ata_xfer_mode2shift()
  libata: Improve ATA queued command allocation
  ata: pata_mpc52xx: Prepare cleanup of powerpc's asm/prom.h
 2022-05-23 14:14:50 -07:00
Song Liu
fe736565ef bpf: Introduce bpf_arch_text_invalidate for bpf_prog_pack 
Introduce bpf_arch_text_invalidate and use it to fill unused part of the
bpf_prog_pack with illegal instructions when a BPF program is freed.

Fixes: 57631054fa ("bpf: Introduce bpf_prog_pack allocator")
Fixes: 33c9805860 ("bpf: Introduce bpf_jit_binary_pack_[alloc|finalize|free]")
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Song Liu <song@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20220520235758.1858153-4-song@kernel.org
 2022-05-23 23:08:11 +02:00
Linus Torvalds
5dc921868c for-5.19/drivers-2022-05-22 
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Merge tag 'for-5.19/drivers-2022-05-22' of git://git.kernel.dk/linux-block

Pull block driver updates from Jens Axboe:
 "Here are the driver updates queued up for 5.19. This contains:

   - NVMe pull requests via Christoph:
       - tighten the PCI presence check (Stefan Roese)
       - fix a potential NULL pointer dereference in an error path (Kyle
         Miller Smith)
       - fix interpretation of the DMRSL field (Tom Yan)
       - relax the data transfer alignment (Keith Busch)
       - verbose error logging improvements (Max Gurtovoy, Chaitanya
         Kulkarni)
       - misc cleanups (Chaitanya Kulkarni, Christoph)
       - set non-mdts limits in nvme_scan_work (Chaitanya Kulkarni)
       - add support for TP4084 - Time-to-Ready Enhancements (Christoph)

   - MD pull request via Song:
       - Improve annotation in raid5 code, by Logan Gunthorpe
       - Support MD_BROKEN flag in raid-1/5/10, by Mariusz Tkaczyk
       - Other small fixes/cleanups

   - null_blk series making the configfs side much saner (Damien)

   - Various minor drbd cleanups and fixes (Haowen, Uladzislau, Jiapeng,
     Arnd, Cai)

   - Avoid using the system workqueue (and hence flushing it) in rnbd
     (Jack)

   - Avoid using the system workqueue (and hence flushing it) in aoe
     (Tetsuo)

   - Series fixing discard_alignment issues in drivers (Christoph)

   - Small series fixing drivers poking at disk->part0 for openers
     information (Christoph)

   - Series fixing deadlocks in loop (Christoph, Tetsuo)

   - Remove loop.h and add SPDX headers (Christoph)

   - Various fixes and cleanups (Julia, Xie, Yu)"

* tag 'for-5.19/drivers-2022-05-22' of git://git.kernel.dk/linux-block: (72 commits)
  mtip32xx: fix typo in comment
  nvme: set non-mdts limits in nvme_scan_work
  nvme: add support for TP4084 - Time-to-Ready Enhancements
  nvme: split the enum used for various register constants
  nbd: Fix hung on disconnect request if socket is closed before
  nvme-fabrics: add a request timeout helper
  nvme-pci: harden drive presence detect in nvme_dev_disable()
  nvme-pci: fix a NULL pointer dereference in nvme_alloc_admin_tags
  nvme: mark internal passthru request RQF_QUIET
  nvme: remove unneeded include from constants file
  nvme: add missing status values to verbose logging
  nvme: set dma alignment to dword
  nvme: fix interpretation of DMRSL
  loop: remove most the top-of-file boilerplate comment from the UAPI header
  loop: remove most the top-of-file boilerplate comment
  loop: add a SPDX header
  loop: remove loop.h
  block: null_blk: Improve device creation with configfs
  block: null_blk: Cleanup messages
  block: null_blk: Cleanup device creation and deletion
  ...
 2022-05-23 14:04:14 -07:00
Linus Torvalds
115cd47132 for-5.19/block-2022-05-22 
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Merge tag 'for-5.19/block-2022-05-22' of git://git.kernel.dk/linux-block

Pull block updates from Jens Axboe:
 "Here are the core block changes for 5.19. This contains:

   - blk-throttle accounting fix (Laibin)

   - Series removing redundant assignments (Michal)

   - Expose bio cache via the bio_set, so that DM can use it (Mike)

   - Finish off the bio allocation interface cleanups by dealing with
     the weirdest member of the family. bio_kmalloc combines a kmalloc
     for the bio and bio_vecs with a hidden bio_init call and magic
     cleanup semantics (Christoph)

   - Clean up the block layer API so that APIs consumed by file systems
     are (almost) only struct block_device based, so that file systems
     don't have to poke into block layer internals like the
     request_queue (Christoph)

   - Clean up the blk_execute_rq* API (Christoph)

   - Clean up various lose end in the blk-cgroup code to make it easier
     to follow in preparation of reworking the blkcg assignment for bios
     (Christoph)

   - Fix use-after-free issues in BFQ when processes with merged queues
     get moved to different cgroups (Jan)

   - BFQ fixes (Jan)

   - Various fixes and cleanups (Bart, Chengming, Fanjun, Julia, Ming,
     Wolfgang, me)"

* tag 'for-5.19/block-2022-05-22' of git://git.kernel.dk/linux-block: (83 commits)
  blk-mq: fix typo in comment
  bfq: Remove bfq_requeue_request_body()
  bfq: Remove superfluous conversion from RQ_BIC()
  bfq: Allow current waker to defend against a tentative one
  bfq: Relax waker detection for shared queues
  blk-cgroup: delete rcu_read_lock_held() WARN_ON_ONCE()
  blk-throttle: Set BIO_THROTTLED when bio has been throttled
  blk-cgroup: Remove unnecessary rcu_read_lock/unlock()
  blk-cgroup: always terminate io.stat lines
  block, bfq: make bfq_has_work() more accurate
  block, bfq: protect 'bfqd->queued' by 'bfqd->lock'
  block: cleanup the VM accounting in submit_bio
  block: Fix the bio.bi_opf comment
  block: reorder the REQ_ flags
  blk-iocost: combine local_stat and desc_stat to stat
  block: improve the error message from bio_check_eod
  block: allow passing a NULL bdev to bio_alloc_clone/bio_init_clone
  block: remove superfluous calls to blkcg_bio_issue_init
  kthread: unexport kthread_blkcg
  blk-cgroup: cleanup blkcg_maybe_throttle_current
  ...
 2022-05-23 13:56:39 -07:00
Linus Torvalds
f6792c877a for-5.19/cdrom-2022-05-22 
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Merge tag 'for-5.19/cdrom-2022-05-22' of git://git.kernel.dk/linux-block

Pull cdrom updates from Jens Axboe:
 "Removal of unused code and documentation updates"

* tag 'for-5.19/cdrom-2022-05-22' of git://git.kernel.dk/linux-block:
  cdrom: remove obsolete TODO list
  block: remove last remaining traces of IDE documentation
  cdrom: mark CDROMGETSPINDOWN/CDROMSETSPINDOWN obsolete
  cdrom: remove the unused driver specific disc change ioctl
  cdrom: make EXPORT_SYMBOL follow exported function
 2022-05-23 13:52:14 -07:00
Linus Torvalds
9836e93c0a for-5.19/io_uring-passthrough-2022-05-22 
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Merge tag 'for-5.19/io_uring-passthrough-2022-05-22' of git://git.kernel.dk/linux-block

Pull io_uring NVMe command passthrough from Jens Axboe:
 "On top of everything else, this adds support for passthrough for
  io_uring.

  The initial feature for this is NVMe passthrough support, which allows
  non-filesystem based IO commands and admin commands.

  To support this, io_uring grows support for SQE and CQE members that
  are twice as big, allowing to pass in a full NVMe command without
  having to copy data around. And to complete with more than just a
  single 32-bit value as the output"

* tag 'for-5.19/io_uring-passthrough-2022-05-22' of git://git.kernel.dk/linux-block: (22 commits)
  io_uring: cleanup handling of the two task_work lists
  nvme: enable uring-passthrough for admin commands
  nvme: helper for uring-passthrough checks
  blk-mq: fix passthrough plugging
  nvme: add vectored-io support for uring-cmd
  nvme: wire-up uring-cmd support for io-passthru on char-device.
  nvme: refactor nvme_submit_user_cmd()
  block: wire-up support for passthrough plugging
  fs,io_uring: add infrastructure for uring-cmd
  io_uring: support CQE32 for nop operation
  io_uring: enable CQE32
  io_uring: support CQE32 in /proc info
  io_uring: add tracing for additional CQE32 fields
  io_uring: overflow processing for CQE32
  io_uring: flush completions for CQE32
  io_uring: modify io_get_cqe for CQE32
  io_uring: add CQE32 completion processing
  io_uring: add CQE32 setup processing
  io_uring: change ring size calculation for CQE32
  io_uring: store add. return values for CQE32
  ...
 2022-05-23 13:06:15 -07:00
Linus Torvalds
e1a8fde720 for-5.19/io_uring-net-2022-05-22 
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Merge tag 'for-5.19/io_uring-net-2022-05-22' of git://git.kernel.dk/linux-block

Pull io_uring 'more data in socket' support from Jens Axboe:
 "To be able to fully utilize the 'poll first' support in the core
  io_uring branch, it's advantageous knowing if the socket was empty
  after a receive. This adds support for that"

* tag 'for-5.19/io_uring-net-2022-05-22' of git://git.kernel.dk/linux-block:
  io_uring: return hint on whether more data is available after receive
  tcp: pass back data left in socket after receive
 2022-05-23 12:51:04 -07:00
Björn Ardö
bca1a10046 mailbox: forward the hrtimer if not queued and under a lock 
This reverts commit c7dacf5b0f,
"mailbox: avoid timer start from callback"

The previous commit was reverted since it lead to a race that
caused the hrtimer to not be started at all. The check for
hrtimer_active() in msg_submit() will return true if the
callback function txdone_hrtimer() is currently running. This
function could return HRTIMER_NORESTART and then the timer
will not be restarted, and also msg_submit() will not start
the timer. This will lead to a message actually being submitted
but no timer will start to check for its compleation.

The original fix that added checking hrtimer_active() was added to
avoid a warning with hrtimer_forward. Looking in the kernel
another solution to avoid this warning is to check hrtimer_is_queued()
before calling hrtimer_forward_now() instead. This however requires a
lock so the timer is not started by msg_submit() inbetween this check
and the hrtimer_forward() call.

Fixes: c7dacf5b0f ("mailbox: avoid timer start from callback")
Signed-off-by: Björn Ardö <bjorn.ardo@axis.com>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
 2022-05-23 14:45:24 -05:00
Linus Torvalds
368da430d0 for-5.19/io_uring-socket-2022-05-22 
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Merge tag 'for-5.19/io_uring-socket-2022-05-22' of git://git.kernel.dk/linux-block

Pull io_uring socket() support from Jens Axboe:
 "This adds support for socket(2) for io_uring. This is handy when using
  direct / registered file descriptors with io_uring.

  Outside of those two patches, a small series from Dylan on top that
  improves the tracing by providing a text representation of the opcode
  rather than needing to decode this by reading the header file every
  time.

  That sits in this branch as it was the last opcode added (until it
  wasn't...)"

* tag 'for-5.19/io_uring-socket-2022-05-22' of git://git.kernel.dk/linux-block:
  io_uring: use the text representation of ops in trace
  io_uring: rename op -> opcode
  io_uring: add io_uring_get_opcode
  io_uring: add type to op enum
  io_uring: add socket(2) support
  net: add __sys_socket_file()
 2022-05-23 12:42:33 -07:00
Linus Torvalds
09beaff75e for-5.19/io_uring-xattr-2022-05-22 
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Merge tag 'for-5.19/io_uring-xattr-2022-05-22' of git://git.kernel.dk/linux-block

Pull io_uring xattr support from Jens Axboe:
 "Support for the xattr variants"

* tag 'for-5.19/io_uring-xattr-2022-05-22' of git://git.kernel.dk/linux-block:
  io_uring: cleanup error-handling around io_req_complete
  io_uring: fix trace for reduced sqe padding
  io_uring: add fgetxattr and getxattr support
  io_uring: add fsetxattr and setxattr support
  fs: split off do_getxattr from getxattr
  fs: split off setxattr_copy and do_setxattr function from setxattr
 2022-05-23 12:30:30 -07:00
Linus Torvalds
3a166bdbf3 for-5.19/io_uring-2022-05-22 
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Merge tag 'for-5.19/io_uring-2022-05-22' of git://git.kernel.dk/linux-block

Pull io_uring updates from Jens Axboe:
 "Here are the main io_uring changes for 5.19. This contains:

   - Fixes for sparse type warnings (Christoph, Vasily)

   - Support for multi-shot accept (Hao)

   - Support for io_uring managed fixed files, rather than always
     needing the applicationt o manage the indices (me)

   - Fix for a spurious poll wakeup (Dylan)

   - CQE overflow fixes (Dylan)

   - Support more types of cancelations (me)

   - Support for co-operative task_work signaling, rather than always
     forcing an IPI (me)

   - Support for doing poll first when appropriate, rather than always
     attempting a transfer first (me)

   - Provided buffer cleanups and support for mapped buffers (me)

   - Improve how io_uring handles inflight SCM files (Pavel)

   - Speedups for registered files (Pavel, me)

   - Organize the completion data in a struct in io_kiocb rather than
     keep it in separate spots (Pavel)

   - task_work improvements (Pavel)

   - Cleanup and optimize the submission path, in general and for
     handling links (Pavel)

   - Speedups for registered resource handling (Pavel)

   - Support sparse buffers and file maps (Pavel, me)

   - Various fixes and cleanups (Almog, Pavel, me)"

* tag 'for-5.19/io_uring-2022-05-22' of git://git.kernel.dk/linux-block: (111 commits)
  io_uring: fix incorrect __kernel_rwf_t cast
  io_uring: disallow mixed provided buffer group registrations
  io_uring: initialize io_buffer_list head when shared ring is unregistered
  io_uring: add fully sparse buffer registration
  io_uring: use rcu_dereference in io_close
  io_uring: consistently use the EPOLL* defines
  io_uring: make apoll_events a __poll_t
  io_uring: drop a spurious inline on a forward declaration
  io_uring: don't use ERR_PTR for user pointers
  io_uring: use a rwf_t for io_rw.flags
  io_uring: add support for ring mapped supplied buffers
  io_uring: add io_pin_pages() helper
  io_uring: add buffer selection support to IORING_OP_NOP
  io_uring: fix locking state for empty buffer group
  io_uring: implement multishot mode for accept
  io_uring: let fast poll support multishot
  io_uring: add REQ_F_APOLL_MULTISHOT for requests
  io_uring: add IORING_ACCEPT_MULTISHOT for accept
  io_uring: only wake when the correct events are set
  io_uring: avoid io-wq -EAGAIN looping for !IOPOLL
  ...
 2022-05-23 12:22:49 -07:00
Linus Torvalds
1e57930e9f RCU pull request for v5.19 
This pull request contains the following branches:
 
 docs.2022.04.20a: Documentation updates.
 
 fixes.2022.04.20a: Miscellaneous fixes.
 
 nocb.2022.04.11b: Callback-offloading updates, mainly simplifications.
 
 rcu-tasks.2022.04.11b: RCU-tasks updates, including some -rt fixups,
 	handling of systems with sparse CPU numbering, and a fix for a
 	boot-time race-condition failure.
 
 srcu.2022.05.03a: Put SRCU on a memory diet in order to reduce the size
 	of the srcu_struct structure.
 
 torture.2022.04.11b: Torture-test updates fixing some bugs in tests and
 	closing some testing holes.
 
 torture-tasks.2022.04.20a: Torture-test updates for the RCU tasks flavors,
 	most notably ensuring that building rcutorture and friends does
 	not change the RCU-tasks-related Kconfig options.
 
 torturescript.2022.04.20a: Torture-test scripting updates.
 
 exp.2022.05.11a: Expedited grace-period updates, most notably providing
 	milliseconds-scale (not all that) soft real-time response from
 	synchronize_rcu_expedited().  This is also the first time in
 	almost 30 years of RCU that someone other than me has pushed
 	for a reduction in the RCU CPU stall-warning timeout, in this
 	case by more than three orders of magnitude from 21 seconds to
 	20 milliseconds.  This tighter timeout applies only to expedited
 	grace periods.
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Merge tag 'rcu.2022.05.19a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu

Pull RCU update from Paul McKenney:

 - Documentation updates

 - Miscellaneous fixes

 - Callback-offloading updates, mainly simplifications

 - RCU-tasks updates, including some -rt fixups, handling of systems
   with sparse CPU numbering, and a fix for a boot-time race-condition
   failure

 - Put SRCU on a memory diet in order to reduce the size of the
   srcu_struct structure

 - Torture-test updates fixing some bugs in tests and closing some
   testing holes

 - Torture-test updates for the RCU tasks flavors, most notably ensuring
   that building rcutorture and friends does not change the
   RCU-tasks-related Kconfig options

 - Torture-test scripting updates

 - Expedited grace-period updates, most notably providing
   milliseconds-scale (not all that) soft real-time response from
   synchronize_rcu_expedited().

   This is also the first time in almost 30 years of RCU that someone
   other than me has pushed for a reduction in the RCU CPU stall-warning
   timeout, in this case by more than three orders of magnitude from 21
   seconds to 20 milliseconds. This tighter timeout applies only to
   expedited grace periods

* tag 'rcu.2022.05.19a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu: (80 commits)
  rcu: Move expedited grace period (GP) work to RT kthread_worker
  rcu: Introduce CONFIG_RCU_EXP_CPU_STALL_TIMEOUT
  srcu: Drop needless initialization of sdp in srcu_gp_start()
  srcu: Prevent expedited GPs and blocking readers from consuming CPU
  srcu: Add contention check to call_srcu() srcu_data ->lock acquisition
  srcu: Automatically determine size-transition strategy at boot
  rcutorture: Make torture.sh allow for --kasan
  rcutorture: Make torture.sh refscale and rcuscale specify Tasks Trace RCU
  rcutorture: Make kvm.sh allow more memory for --kasan runs
  torture: Save "make allmodconfig" .config file
  scftorture: Remove extraneous "scf" from per_version_boot_params
  rcutorture: Adjust scenarios' Kconfig options for CONFIG_PREEMPT_DYNAMIC
  torture: Enable CSD-lock stall reports for scftorture
  torture: Skip vmlinux check for kvm-again.sh runs
  scftorture: Adjust for TASKS_RCU Kconfig option being selected
  rcuscale: Allow rcuscale without RCU Tasks Rude/Trace
  rcuscale: Allow rcuscale without RCU Tasks
  refscale: Allow refscale without RCU Tasks Rude/Trace
  refscale: Allow refscale without RCU Tasks
  rcutorture: Allow specifying per-scenario stat_interval
  ...
 2022-05-23 11:46:51 -07:00
Rafael J. Wysocki
388292df27 Merge back earlier thermal control updates for 5.19-rc1. 2022-05-23 20:31:57 +02:00
Linus Torvalds
bf2431021c EFI updates for v5.19 
- Allow runtime services to be re-enabled at boot on RT kernels.
 - Provide access to secrets injected into the boot image by CoCo
   hypervisors (COnfidential COmputing)
 - Use DXE services on x86 to make the boot image executable after
   relocation, if needed.
 - Prefer mirrored memory for randomized allocations.
 - Only randomize the placement of the kernel image on arm64 if the
   loader has not already done so.
 - Add support for obtaining the boot hartid from EFI on RISC-V.
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Merge tag 'efi-next-for-v5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi

Pull EFI updates from Ard Biesheuvel:

 - Allow runtime services to be re-enabled at boot on RT kernels.

 - Provide access to secrets injected into the boot image by CoCo
   hypervisors (COnfidential COmputing)

 - Use DXE services on x86 to make the boot image executable after
   relocation, if needed.

 - Prefer mirrored memory for randomized allocations.

 - Only randomize the placement of the kernel image on arm64 if the
   loader has not already done so.

 - Add support for obtaining the boot hartid from EFI on RISC-V.

* tag 'efi-next-for-v5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi:
  riscv/efi_stub: Add support for RISCV_EFI_BOOT_PROTOCOL
  efi: stub: prefer mirrored memory for randomized allocations
  efi/arm64: libstub: run image in place if randomized by the loader
  efi: libstub: pass image handle to handle_kernel_image()
  efi: x86: Set the NX-compatibility flag in the PE header
  efi: libstub: ensure allocated memory to be executable
  efi: libstub: declare DXE services table
  efi: Add missing prototype for efi_capsule_setup_info
  docs: security: Add secrets/coco documentation
  efi: Register efi_secret platform device if EFI secret area is declared
  virt: Add efi_secret module to expose confidential computing secrets
  efi: Save location of EFI confidential computing area
  efi: Allow to enable EFI runtime services by default on RT
 2022-05-23 11:27:24 -07:00
Rafael J. Wysocki
cd8198a2c1 Merge branch 'pm-domains' 
Merge generlic power domains update for 5.19-rc1:

 - Extend dev_pm_domain_detach() doc (Krzysztof Kozlowski).

 - Move genpd's time-accounting to ktime_get_mono_fast_ns() (Ulf
   Hansson).

 - Improve the way genpd deals with its governors (Ulf Hansson).

* pm-domains:
  PM: domains: Trust domain-idle-states from DT to be correct by genpd
  PM: domains: Measure power-on/off latencies in genpd based on a governor
  PM: domains: Allocate governor data dynamically based on a genpd governor
  PM: domains: Clean up some code in pm_genpd_init() and genpd_remove()
  PM: domains: Fix initialization of genpd's next_wakeup
  PM: domains: Fixup QoS latency measurements for IRQ safe devices in genpd
  PM: domains: Measure suspend/resume latencies in genpd based on governor
  PM: domains: Move the next_wakeup variable into the struct gpd_timing_data
  PM: domains: Allocate gpd_timing_data dynamically based on governor
  PM: domains: Skip another warning in irq_safe_dev_in_sleep_domain()
  PM: domains: Rename irq_safe_dev_in_no_sleep_domain() in genpd
  PM: domains: Don't check PM_QOS_FLAG_NO_POWER_OFF in genpd
  PM: domains: Drop redundant code for genpd always-on governor
  PM: domains: Add GENPD_FLAG_RPM_ALWAYS_ON for the always-on governor
  PM: domains: Move genpd's time-accounting to ktime_get_mono_fast_ns()
  PM: domains: Extend dev_pm_domain_detach() doc
 2022-05-23 19:51:31 +02:00
Rafael J. Wysocki
d988c91342 Merge branch 'pm-cpufreq' 
Merge cpufreq updates for 5.19-rc1:

 - Fix cpufreq governor clean up code to avoid using kfree() directly
   to free kobject-based items (Kevin Hao).

 - Prepare cpufreq for powerpc's asm/prom.h cleanup (Christophe Leroy).

 - Make intel_pstate notify frequency invariance code when no_turbo is
   turned on and off (Chen Yu).

 - Add Sapphire Rapids OOB mode support to intel_pstate (Srinivas
   Pandruvada).

 - Make cpufreq avoid unnecessary frequency updates due to mismatch
   between hardware and the frequency table (Viresh Kumar).

 - Make remove_cpu_dev_symlink() clear the real_cpus mask to simplify
   code (Viresh Kumar).

 - Rearrange cpufreq_offline() and cpufreq_remove_dev() to make the
   calling convention for some driver callbacks consistent (Rafael
   Wysocki).

 - Avoid accessing half-initialized cpufreq policies from the show()
   and store() sysfs functions (Schspa Shi).

 - Rearrange cpufreq_offline() to make the calling convention for some
   driver callbacks consistent (Schspa Shi).

 - Update CPPC handling in cpufreq (Pierre Gondois):

   * Add per_cpu efficiency_class to the CPPC driver.
   * Make the CPPC driver Register EM based on efficiency class
     information.
   * Adjust _OSC for flexible address space in the ACPI platform
     initialization code and always set CPPC _OSC bits if CPPC_LIB is
     supported.
   * Assume no transition latency if no PCCT in the CPPC driver.
   * Add fast_switch and dvfs_possible_from_any_cpu support to the CPPC
     driver.

* pm-cpufreq:
  cpufreq: CPPC: Enable dvfs_possible_from_any_cpu
  cpufreq: CPPC: Enable fast_switch
  ACPI: CPPC: Assume no transition latency if no PCCT
  ACPI: bus: Set CPPC _OSC bits for all and when CPPC_LIB is supported
  ACPI: CPPC: Check _OSC for flexible address space
  cpufreq: make interface functions and lock holding state clear
  cpufreq: Abort show()/store() for half-initialized policies
  cpufreq: Rearrange locking in cpufreq_remove_dev()
  cpufreq: Split cpufreq_offline()
  cpufreq: Reorganize checks in cpufreq_offline()
  cpufreq: Clear real_cpus mask from remove_cpu_dev_symlink()
  cpufreq: intel_pstate: Support Sapphire Rapids OOB mode
  Revert "cpufreq: Fix possible race in cpufreq online error path"
  cpufreq: CPPC: Register EM based on efficiency class information
  cpufreq: CPPC: Add per_cpu efficiency_class
  cpufreq: Avoid unnecessary frequency updates due to mismatch
  cpufreq: Fix possible race in cpufreq online error path
  cpufreq: intel_pstate: Handle no_turbo in frequency invariance
  cpufreq: Prepare cleanup of powerpc's asm/prom.h
  cpufreq: governor: Use kobject release() method to free dbs_data
 2022-05-23 19:28:41 +02:00
Rafael J. Wysocki
16a23f394d Merge branches 'pm-em' and 'pm-cpuidle' 
Marge Energy Model support updates and cpuidle updates for 5.19-rc1:

 - Update the Energy Model support code to allow the Energy Model to be
   artificial, which means that the power values may not be on a uniform
   scale with other devices providing power information, and update the
   cpufreq_cooling and devfreq_cooling thermal drivers to support
   artificial Energy Models (Lukasz Luba).

 - Make DTPM check the Energy Model type (Lukasz Luba).

 - Fix policy counter decrementation in cpufreq if Energy Model is in
   use (Pierre Gondois).

 - Add AlderLake processor support to the intel_idle driver (Zhang Rui).

 - Fix regression leading to no genpd governor in the PSCI cpuidle
   driver and fix the riscv-sbi cpuidle driver to allow a genpd
   governor to be used (Ulf Hansson).

* pm-em:
  PM: EM: Decrement policy counter
  powercap: DTPM: Check for Energy Model type
  thermal: cooling: Check Energy Model type in cpufreq_cooling and devfreq_cooling
  Documentation: EM: Add artificial EM registration description
  PM: EM: Remove old debugfs files and print all 'flags'
  PM: EM: Change the order of arguments in the .active_power() callback
  PM: EM: Use the new .get_cost() callback while registering EM
  PM: EM: Add artificial EM flag
  PM: EM: Add .get_cost() callback

* pm-cpuidle:
  cpuidle: riscv-sbi: Fix code to allow a genpd governor to be used
  cpuidle: psci: Fix regression leading to no genpd governor
  intel_idle: Add AlderLake support
 2022-05-23 19:18:51 +02:00
Rafael J. Wysocki
95f2ce548a Merge branches 'pm-core', 'pm-sleep' and 'powercap' 
Merge PM core changes, updates related to system sleep and power capping
updates for 5.19-rc1:

 - Export dev_pm_ops instead of suspend() and resume() in the IIO
   chemical scd30 driver (Jonathan Cameron).

 - Add namespace variants of EXPORT[_GPL]_SIMPLE_DEV_PM_OPS and
   PM-runtime counterparts (Jonathan Cameron).

 - Move symbol exports in the IIO chemical scd30 driver into the
   IIO_SCD30 namespace (Jonathan Cameron).

 - Avoid device PM-runtime usage count underflows (Rafael Wysocki).

 - Allow dynamic debug to control printing of PM messages  (David
   Cohen).

 - Fix some kernel-doc comments in hibernation code (Yang Li, Haowen
   Bai).

 - Preserve ACPI-table override during hibernation (Amadeusz Sławiński).

 - Improve support for suspend-to-RAM for PSCI OSI mode (Ulf Hansson).

 - Make Intel RAPL power capping driver support the RaptorLake and
   AlderLake N processors (Zhang Rui, Sumeet Pawnikar).

 - Remove redundant store to value after multiply in the RAPL power
   capping driver (Colin Ian King).

* pm-core:
  PM: runtime: Avoid device usage count underflows
  iio: chemical: scd30: Move symbol exports into IIO_SCD30 namespace
  PM: core: Add NS varients of EXPORT[_GPL]_SIMPLE_DEV_PM_OPS and runtime pm equiv
  iio: chemical: scd30: Export dev_pm_ops instead of suspend() and resume()

* pm-sleep:
  cpuidle: PSCI: Improve support for suspend-to-RAM for PSCI OSI mode
  PM: runtime: Allow to call __pm_runtime_set_status() from atomic context
  PM: hibernate: Don't mark comment as kernel-doc
  x86/ACPI: Preserve ACPI-table override during hibernation
  PM: hibernate: Fix some kernel-doc comments
  PM: sleep: enable dynamic debug support within pm_pr_dbg()
  PM: sleep: Narrow down -DDEBUG on kernel/power/ files

* powercap:
  powercap: intel_rapl: remove redundant store to value after multiply
  powercap: intel_rapl: add support for ALDERLAKE_N
  powercap: RAPL: Add Power Limit4 support for RaptorLake
  powercap: intel_rapl: add support for RaptorLake
 2022-05-23 19:06:33 +02:00
Rafael J. Wysocki
5db9ce2095 Merge branches 'acpi-apei', 'acpi-dptf', 'acpi-x86' and 'acpi-docs' 
Merge APEI material, changes related to DPTF, ACPI-related x86 cleanup
and documentation improvement for 5.19-rc1:

 - Fix missing ERST record ID in the APEI code (Liu Xinpeng).

 - Make APEI error injection to refuse to inject into the zero
   page (Tony Luck).

 - Correct description of INT3407 / INT3532 DPTF attributes in sysfs
   (Sumeet Pawnikar).

 - Add support for high frequency impedance notification to the DPTF
   driver (Sumeet Pawnikar).

 - Make mp_config_acpi_gsi() a void function (Li kunyu).

 - Unify Package () representation for properties in the ACPI device
   properties documentation (Andy Shevchenko).

* acpi-apei:
  ACPI, APEI, EINJ: Refuse to inject into the zero page
  ACPI: APEI: Fix missing ERST record id

* acpi-dptf:
  ACPI: DPTF: Add support for high frequency impedance notification
  ACPI: DPTF: Correct description of INT3407 / INT3532 attributes

* acpi-x86:
  x86: ACPI: Make mp_config_acpi_gsi() a void function

* acpi-docs:
  ACPI: docs: enumeration: Unify Package () for properties (part 2)
 2022-05-23 18:44:27 +02:00
Rafael J. Wysocki
4aa8c70cb0 Merge branches 'acpi-pm', 'acpi-pci', 'acpi-sysfs' and 'acpi-tables' 
Merge power management, PCI and sysfs-related material and changes
related to handling ACPI tables for 5.19-rc1:

 - Improve debug messages in the ACPI device PM code (Rafael Wysocki).

 - Block ASUS B1400CEAE from suspend to idle by default (Mario
   Limonciello).

 - Improve handling of PCI devices that are in D3cold during system
   initialization (Rafael Wysocki).

 - Fix BERT error region memory mapping (Lorenzo Pieralisi).

 - Add support for NVIDIA 16550-compatible port subtype to the SPCR
   parsing code (Jeff Brasen).

 - Use static for BGRT_SHOW kobj_attribute defines (Tom Rix).

 - Fix missing prototype warning for acpi_agdi_init() (Ilkka Koskinen).

* acpi-pm:
  ACPI: PM: Block ASUS B1400CEAE from suspend to idle by default
  ACPI: PM: Always print final debug message in acpi_device_set_power()
  ACPI: PM: Unify debug messages in acpi_device_set_power()
  ACPI: PM: Change pr_fmt() in device_pm.c
  ACPI: PM: Convert debug message in acpi_device_get_power()

* acpi-pci:
  ACPI: bus: Avoid non-ACPI device objects in walks over children
  PCI: ACPI: PM: Power up devices in D3cold before scanning them
  ACPI: PM: Introduce acpi_dev_power_up_children_with_adr()
  ACPI: bus: Introduce acpi_dev_for_each_child()

* acpi-sysfs:
  ACPI: sysfs: Fix BERT error region memory mapping

* acpi-tables:
  ACPI: AGDI: Fix missing prototype warning for acpi_agdi_init()
  ACPI: BGRT: use static for BGRT_SHOW kobj_attribute defines
  ACPI: SPCR: Add support for NVIDIA 16550-compatible port subtype
 2022-05-23 18:29:20 +02:00
Rafael J. Wysocki
ec1ff61ee2 Merge branch 'acpica' 
Merge ACPICA material for 5.19-rc1:

 - Add support for the Windows 11 _OSI string (Mario Limonciello)

 - Add the CFMWS subtable to the CEDT table (Lawrence Hileman).

 - iASL: NHLT: Treat Terminator as specific_config (Piotr Maziarz).

 - iASL: NHLT: Fix parsing undocumented bytes at the end of Endpoint
   Descriptor (Piotr Maziarz).

 - iASL: NHLT: Rename linux specific strucures to device_info (Piotr
   Maziarz).

 - Add new ACPI 6.4 semantics to Load() and LoadTable() (Bob Moore).

 - Clean up double word in comment (Tom Rix).

 - Update copyright notices to the year 2022 (Bob Moore).

 - Remove some tabs and // comments - automated cleanup (Bob Moore).

 - Replace zero-length array with flexible-array member (Gustavo A. R.
   Silva).

 - Interpreter: Add units to time variable names (Paul Menzel).

 - Add support for ARM Performance Monitoring Unit Table (Besar
   Wicaksono).

 - Inform users about ACPI spec violation related to sleep length (Paul
   Menzel).

 - iASL/MADT: Add OEM-defined subtable (Bob Moore).

 - Interpreter: Fix some typo mistakes (Selvarasu Ganesan).

 - Updates for revision E.d of IORT (Shameer Kolothum).

 - Use ACPI_FORMAT_UINT64 for 64-bit output (Bob Moore).

 - Update version to 20220331 (Bob Moore).

* acpica: (21 commits)
  Revert "ACPICA: executer/exsystem: Warn about sleeps greater than 10 ms"
  ACPICA: Update version to 20220331
  ACPICA: exsystem.c: Use ACPI_FORMAT_UINT64 for 64-bit output
  ACPICA: IORT: Updates for revision E.d
  ACPICA: executer/exsystem: Fix some typo mistakes
  ACPICA: iASL/MADT: Add OEM-defined subtable
  ACPICA: executer/exsystem: Warn about sleeps greater than 10 ms
  ACPICA: executer/exsystem: Inform users about ACPI spec violation
  ACPICA: Add support for ARM Performance Monitoring Unit Table.
  ACPICA: executer/exsystem: Add units to time variable names
  ACPICA: Headers: Replace zero-length array with flexible-array member
  ACPICA: Removed some tabs and // comments
  ACPICA: Update copyright notices to the year 2022
  ACPICA: Clean up double word in comment
  ACPICA: Add new ACPI 6.4 semantics for LoadTable() operator
  ACPICA: Add new ACPI 6.4 semantics to the Load() operator
  ACPICA: iASL: NHLT: Rename linux specific strucures to device_info
  ACPICA: iASL: NHLT: Fix parsing undocumented bytes at the end of Endpoint Descriptor
  ACPICA: iASL: NHLT: Treat Terminator as specific_config
  ACPICA: Add the subtable CFMWS to the CEDT table
  ...
 2022-05-23 18:16:42 +02:00
Ahmad Fatoum
e9c5048c2d KEYS: trusted: Introduce support for NXP CAAM-based trusted keys 
The Cryptographic Acceleration and Assurance Module (CAAM) is an IP core
built into many newer i.MX and QorIQ SoCs by NXP.

The CAAM does crypto acceleration, hardware number generation and
has a blob mechanism for encapsulation/decapsulation of sensitive material.

This blob mechanism depends on a device specific random 256-bit One Time
Programmable Master Key that is fused in each SoC at manufacturing
time. This key is unreadable and can only be used by the CAAM for AES
encryption/decryption of user data.

This makes it a suitable backend (source) for kernel trusted keys.

Previous commits generalized trusted keys to support multiple backends
and added an API to access the CAAM blob mechanism. Based on these,
provide the necessary glue to use the CAAM for trusted keys.

Reviewed-by: David Gstir <david@sigma-star.at>
Reviewed-by: Pankaj Gupta <pankaj.gupta@nxp.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Tested-by: Tim Harvey <tharvey@gateworks.com>
Tested-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com>
Tested-by: Pankaj Gupta <pankaj.gupta@nxp.com>
Tested-by: Michael Walle <michael@walle.cc> # on ls1028a (non-E and E)
Tested-by: John Ernberg <john.ernberg@actia.se> # iMX8QXP
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
 2022-05-23 18:47:50 +03:00
Ahmad Fatoum
007c3ff11f crypto: caam - add in-kernel interface for blob generator 
The NXP Cryptographic Acceleration and Assurance Module (CAAM)
can be used to protect user-defined data across system reboot:

  - When the system is fused and boots into secure state, the master
    key is a unique never-disclosed device-specific key
  - random key is encrypted by key derived from master key
  - data is encrypted using the random key
  - encrypted data and its encrypted random key are stored alongside
  - This blob can now be safely stored in non-volatile memory

On next power-on:
  - blob is loaded into CAAM
  - CAAM writes decrypted data either into memory or key register

Add functions to realize encrypting and decrypting into memory alongside
the CAAM driver.

They will be used in a later commit as a source for the trusted key
seal/unseal mechanism.

Reviewed-by: David Gstir <david@sigma-star.at>
Reviewed-by: Pankaj Gupta <pankaj.gupta@nxp.com>
Tested-by: Tim Harvey <tharvey@gateworks.com>
Tested-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com>
Tested-by: Pankaj Gupta <pankaj.gupta@nxp.com>
Tested-by: Michael Walle <michael@walle.cc> # on ls1028a (non-E and E)
Tested-by: John Ernberg <john.ernberg@actia.se> # iMX8QXP
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
 2022-05-23 18:47:50 +03:00
Ahmad Fatoum
fcd7c26901 KEYS: trusted: allow use of kernel RNG for key material 
The two existing trusted key sources don't make use of the kernel RNG,
but instead let the hardware doing the sealing/unsealing also
generate the random key material. However, both users and future
backends may want to place less trust into the quality of the trust
source's random number generator and instead reuse the kernel entropy
pool, which can be seeded from multiple entropy sources.

Make this possible by adding a new trusted.rng parameter,
that will force use of the kernel RNG. In its absence, it's up
to the trust source to decide, which random numbers to use,
maintaining the existing behavior.

Suggested-by: Jarkko Sakkinen <jarkko@kernel.org>
Acked-by: Sumit Garg <sumit.garg@linaro.org>
Acked-by: Pankaj Gupta <pankaj.gupta@nxp.com>
Reviewed-by: David Gstir <david@sigma-star.at>
Reviewed-by: Pankaj Gupta <pankaj.gupta@nxp.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Tested-by: Pankaj Gupta <pankaj.gupta@nxp.com>
Tested-by: Michael Walle <michael@walle.cc> # on ls1028a (non-E and E)
Tested-by: John Ernberg <john.ernberg@actia.se> # iMX8QXP
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
 2022-05-23 18:47:50 +03:00