All non-binding operations in VM bind IOCTL should be in the lock and
prepare step rather than the execution step. Move prefetch to conform to
this pattern.
v2:
- Rebase
- New function names (Oak)
- Update stale comment (Oak)
Cc: Oak Zeng <oak.zeng@intel.com>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Oak Zeng <oak.zeng@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240425045513.1913039-4-matthew.brost@intel.com
Add ops_execute function which returns a fence. This will be helpful to
initiate all binds (VM bind IOCTL, rebinds in exec IOCTL, rebinds in
preempt rebind worker, and rebinds in pagefaults) via a gpuva ops list.
Returning a fence is needed in various paths.
v2:
- Rebase
Cc: Oak Zeng <oak.zeng@intel.com>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Oak Zeng <oak.zeng@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240425045513.1913039-3-matthew.brost@intel.com
Lock all BOs used in gpuva ops and validate all BOs in a single step
during the VM bind IOCTL.
This help with the transition to making all gpuva ops in a VM bind IOCTL
a single atomic job which is required for proper error handling.
v2:
- Better commit message (Oak)
- s/op_lock/op_lock_and_prep, few other renames too (Oak)
- Use DRM_EXEC_IGNORE_DUPLICATES flag in drm_exec_init (local testing)
- Do not reserve slots in locking step (direction based on series from Thomas)
v3:
- Validate BO if is immediate set (Oak)
Cc: Oak Zeng <oak.zeng@intel.com>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Oak Zeng <oak.zeng@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240425045513.1913039-2-matthew.brost@intel.com
- fix a regression in pin access control in gpio-tegra186
- make data pointer dereference robust in Intel Tangier driver
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Merge tag 'gpio-fixes-for-v6.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio fixes from Bartosz Golaszewski:
- fix a regression in pin access control in gpio-tegra186
- make data pointer dereference robust in Intel Tangier driver
* tag 'gpio-fixes-for-v6.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
gpio: tegra186: Fix tegra186_gpio_is_accessible() check
gpio: tangier: Use correct type for the IRQ chip data
Describe the Ethernet LEDs for the Raspberry Pi 4 model B board as well
as the Raspberry Pi 4 CM board. The Raspberry Pi 400 board does not
include RJ45 connector LEDs so the 'leds' node is deleted accordingly.
The Ethernet PHY LEDs are numbered in the PHY package/pin list from LED1
through LED4, however their address within the LED registers function
selector is 0-indexed.
Link: https://lore.kernel.org/r/20240423191500.1443636-1-florian.fainelli@broadcom.com
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
Reviewed-by: Stefan Wahren <wahrenst@gmx.net>
synchronously by default. Asynchronous removal has always been
possible but it isn't the default. It is important that synchronous
removal be preserved, otherwise it is an interface change that
breaks lvm2.
- Remove errant semicolon in drivers/md/dm-vdo/murmurhash3.c
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Merge tag 'for-6.9/dm-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull device mapper fixes from Mike Snitzer:
- Fix 6.9 regression so that DM device removal is performed
synchronously by default.
Asynchronous removal has always been possible but it isn't the
default. It is important that synchronous removal be preserved,
otherwise it is an interface change that breaks lvm2.
- Remove errant semicolon in drivers/md/dm-vdo/murmurhash3.c
* tag 'for-6.9/dm-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm: restore synchronous close of device mapper block device
dm vdo murmurhash: remove unneeded semicolon
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Merge tag 'vfs-6.9-rc6.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull vfs fixes from Christian Brauner:
"This contains a few small fixes for this merge window and the attempt
to handle the ntfs removal regression that was reported a little while
ago:
- After the removal of the legacy ntfs driver we received reports
about regressions for some people that do mount "ntfs" explicitly
and expect the driver to be available. Since ntfs3 is a drop-in for
legacy ntfs we alias legacy ntfs to ntfs3 just like ext3 is aliased
to ext4.
We also enforce legacy ntfs is always mounted read-only and give it
custom file operations to ensure that ioctl()'s can't be abused to
perform write operations.
- Fix an unbalanced module_get() in bdev_open().
- Two smaller fixes for the netfs work done earlier in this cycle.
- Fix the errno returned from the new FS_IOC_GETUUID and
FS_IOC_GETFSSYSFSPATH ioctls. Both commands just pull information
out of the superblock so there's no need to call into the actual
ioctl handlers.
So instead of returning ENOIOCTLCMD to indicate to fallback we just
return ENOTTY directly avoiding that indirection"
* tag 'vfs-6.9-rc6.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
netfs: Fix the pre-flush when appending to a file in writethrough mode
netfs: Fix writethrough-mode error handling
ntfs3: add legacy ntfs file operations
ntfs3: enforce read-only when used as legacy ntfs driver
ntfs3: serve as alias for the legacy ntfs driver
block: fix module reference leakage from bdev_open_by_dev error path
fs: Return ENOTTY directly if FS_IOC_GETUUID or FS_IOC_GETFSSYSFSPATH fail
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Merge tag 'loongarch-fixes-6.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
Pull LoongArch fixes from Huacai Chen:
"Fix some build errors and some trivial runtime bugs"
* tag 'loongarch-fixes-6.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson:
LoongArch: Lately init pmu after smp is online
LoongArch: Fix callchain parse error with kernel tracepoint events
LoongArch: Fix access error when read fault on a write-only VMA
LoongArch: Fix a build error due to __tlb_remove_tlb_entry()
LoongArch: Fix Kconfig item and left code related to CRASH_CORE
This is just an update to my maintainer entries as I will switch jobs
soon. Getting a contact email address into the MAINTAINERS file that
will work also after my switch will hopefully reduce people mailing to
the then non-existing address.
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Merge tag 'pwm/for-6.9-rc6-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/linux
Pull maintainer entry update from Uwe Kleine-König:
"This is just an update to my maintainer entries as I will switch jobs
soon. Getting a contact email address into the MAINTAINERS file that
will work also after my switch will hopefully reduce people mailing to
the then non-existing address.
I also drop my co-maintenance for SIOX, but that continues to be in
good hands"
* tag 'pwm/for-6.9-rc6-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/linux:
MAINTAINERS: Update Uwe's email address, drop SIOX maintenance
This fixes the MediaTek SVS driver to look for the right thermal zone
names, and adds a missing Kconfig dependency for mtk-socinfo.
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Merge tag 'mtk-soc-fixes-for-v6.9' of https://git.kernel.org/pub/scm/linux/kernel/git/mediatek/linux into for-next
MediaTek driver fixes for v6.9
This fixes the MediaTek SVS driver to look for the right thermal zone
names, and adds a missing Kconfig dependency for mtk-socinfo.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Add quirks table to get CPPC capabilities issue fixed by providing
correct perf or frequency values while driver loading.
If CPPC capabilities are not defined in the ACPI tables or wrongly
defined by platform firmware, it needs to use quick to get those
issues fixed with correct workaround values to make pstate driver
can be loaded even though there are CPPC capabilities errors.
The workaround will match the broken BIOS which lack of CPPC capabilities
nominal_freq and lowest_freq definition in the ACPI table.
$ cat /sys/devices/system/cpu/cpu0/acpi_cppc/lowest_freq
0
$ cat /sys/devices/system/cpu/cpu0/acpi_cppc/nominal_freq
0
Acked-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Gautham R. Shenoy <gautham.shenoy@amd.com>
Tested-by: Dhananjay Ugwekar <Dhananjay.Ugwekar@amd.com>
Signed-off-by: Perry Yuan <perry.yuan@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
The amd-pstate driver can fail when _CPC objects are not supported by
the CPU. However, the current error message is ambiguous (see below) and
there is no clear way for attributing the failure of the amd-pstate
driver to the lack of CPPC support.
[ 0.477523] amd_pstate: the _CPC object is not present in SBIOS or ACPI disabled
Fix this by adding an debug message to notify the user if the amd-pstate
driver failed to load due to CPPC not be supported by the CPU
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Gautham R. Shenoy <gautham.shenoy@amd.com>
Tested-by: Dhananjay Ugwekar <Dhananjay.Ugwekar@amd.com>
Signed-off-by: Perry Yuan <perry.yuan@amd.com>
Acked-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Make pstate driver initially retrieve the P-state transition delay and
latency values from the BIOS ACPI tables which has more reasonable
delay and latency values according to the platform design and
requirements.
Previously there values were hardcoded at specific value which may
have conflicted with platform and it might not reflect the most
accurate or optimized setting for the processor.
[054h 0084 8] Preserve Mask : FFFFFFFF00000000
[05Ch 0092 8] Write Mask : 0000000000000001
[064h 0100 4] Command Latency : 00000FA0
[068h 0104 4] Maximum Access Rate : 0000EA60
[06Ch 0108 2] Minimum Turnaround Time : 0000
Reviewed-by: Gautham R. Shenoy <gautham.shenoy@amd.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Tested-by: Dhananjay Ugwekar <Dhananjay.Ugwekar@amd.com>
Signed-off-by: Perry Yuan <perry.yuan@amd.com>
Acked-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
The amd-pstate driver cannot work when the min_freq, nominal_freq or
the max_freq is zero. When this happens it is prudent to error out
early on rather than waiting failing at the time of the governor
initialization.
Acked-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Gautham R. Shenoy <gautham.shenoy@amd.com>
Tested-by: Dhananjay Ugwekar <Dhananjay.Ugwekar@amd.com>
Signed-off-by: Perry Yuan <perry.yuan@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
amd_get_{min,max,nominal,lowest_nonlinear}_freq() functions merely
return cpudata->{min,max,nominal,lowest_nonlinear}_freq values.
There is no loss in readability in replacing their invocations by
accesses to the corresponding members of cpudata.
Do so and remove these helper functions.
Acked-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Li Meng <li.meng@amd.com>
Tested-by: Dhananjay Ugwekar <Dhananjay.Ugwekar@amd.com>
Signed-off-by: Gautham R. Shenoy <gautham.shenoy@amd.com>
Signed-off-by: Perry Yuan <perry.yuan@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Currently the amd_get_{min, max, nominal, lowest_nonlinear}_freq()
helpers computes the values of min_freq, max_freq, nominal_freq and
lowest_nominal_freq respectively afresh from
cppc_get_perf_caps(). This is not necessary as there are fields in
cpudata to cache these values.
To simplify this, add a single helper function named
amd_pstate_init_freq() which computes all these frequencies at once, and
caches it in cpudata.
Use the cached values everywhere else in the code.
Acked-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Li Meng <li.meng@amd.com>
Tested-by: Dhananjay Ugwekar <Dhananjay.Ugwekar@amd.com>
Co-developed-by: Gautham R. Shenoy <gautham.shenoy@amd.com>
Signed-off-by: Gautham R. Shenoy <gautham.shenoy@amd.com>
Signed-off-by: Perry Yuan <perry.yuan@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
The min_limit_freq, max_limit_freq, min_freq, max_freq, nominal_freq
and the lowest_nominal_freq members of struct cpudata store the
frequency value in khz to be consistent with the cpufreq
core. Update the comment to document this.
Reviewed-by: Li Meng <li.meng@amd.com>
Tested-by: Dhananjay Ugwekar <Dhananjay.Ugwekar@amd.com>
Signed-off-by: Gautham R. Shenoy <gautham.shenoy@amd.com>
Signed-off-by: Perry Yuan <perry.yuan@amd.com>
Acked-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
The four fields of struct cpudata namely min_limit_perf,
max_limit_perf, min_limit_freq, max_limit_freq introduced in the
commit febab20caeba("cpufreq/amd-pstate: Fix scaling_min_freq and
scaling_max_freq update") are currently undocumented
Add comments describing these fields
Acked-by: Huang Rui <ray.huang@amd.com>
Fixes: febab20caeba("cpufreq/amd-pstate: Fix scaling_min_freq and scaling_max_freq update")
Reviewed-by: Li Meng <li.meng@amd.com>
Tested-by: Dhananjay Ugwekar <Dhananjay.Ugwekar@amd.com>
Signed-off-by: Gautham R. Shenoy <gautham.shenoy@amd.com>
Signed-off-by: Perry Yuan <perry.yuan@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
There is request from the end user to print this field to better
query what type of update capability is supported on this platform.
Signed-off-by: Chen Yu <yu.c.chen@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Commit 0de65288d7 ("RISC-V: selftests: cbo: Ensure asm operands
match constraints") attempted to ensure MK_CBO() would always
provide to a compile-time constant when given a constant, but
cpu_to_le32() isn't necessarily going to do that. Switch to manually
shifting the bytes, when needed, to finally get this right.
Reported-by: Woodrow Shen <woodrow.shen@sifive.com>
Closes: https://lore.kernel.org/all/CABquHATcBTUwfLpd9sPObBgNobqQKEAZ2yxk+TWSpyO5xvpXpg@mail.gmail.com/
Fixes: a29e2a48af ("RISC-V: selftests: Add CBO tests")
Fixes: 0de65288d7 ("RISC-V: selftests: cbo: Ensure asm operands match constraints")
Signed-off-by: Andrew Jones <ajones@ventanamicro.com>
Link: https://lore.kernel.org/r/20240322134728.151255-2-ajones@ventanamicro.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
In the 32-bit platform, the second argument of getline is expectd to be
'size_t *'(aka 'unsigned int *'), but line_sz is of type
'unsigned long *'. Therefore, declare line_sz as size_t.
Signed-off-by: Ben Zong-You Xie <ben717@andestech.com>
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Link: https://lore.kernel.org/r/20240305120501.1785084-3-ben717@andestech.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
The feedback we get from the DPRX is per-lane. Make changes using this
information, instead of picking the maximum values from all lanes. This
results in more-consistent training on marginal links.
Signed-off-by: Sean Anderson <sean.anderson@linux.dev>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240423171859.3953024-5-sean.anderson@linux.dev
Enable this message for verbose debugging only as it is otherwise
printed after every AUX message, quickly filling the log buffer.
Signed-off-by: Sean Anderson <sean.anderson@linux.dev>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240423171859.3953024-4-sean.anderson@linux.dev
The blend, avbuf, and audio members of zynqmp_disp are anonymous structs
with only one member each. This is rather pointless, so move the members
up a level.
Signed-off-by: Sean Anderson <sean.anderson@linux.dev>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240423171859.3953024-2-sean.anderson@linux.dev
The UEFI DSD Guide specifies a number of GUIDs supported by the _DSD
parser. Point to the DSD Guide in the documentation.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
The ACPI namespace has always started with LNXSYSTM, not LNXSYSTEM.
Fix the documentation accordingly.
Signed-off-by: John Watts <contact@jookia.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Add device tree nodes for Tegra AES and HASH engines.
Signed-off-by: Akhil R <akhilrajeev@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
There is no such device as "as3722@40", because its name is "pmic". Use
phandles for aliases to fix relying on full node path. This corrects
aliases for RTC devices and also fixes dtc W=1 warning:
tegra132-norrin.dts:12.3-36: Warning (alias_paths): /aliases:rtc0: aliases property is not a valid node (/i2c@7000d000/as3722@40)
Fixes: 0f279ebdf3 ("arm64: tegra: Add NVIDIA Tegra132 Norrin support")
Cc: stable@vger.kernel.org
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Puranjay Mohan says:
====================
bpf: prevent userspace memory access
V5: https://lore.kernel.org/bpf/20240324185356.59111-1-puranjay12@gmail.com/
Changes in V6:
- Disable the verifier's instrumentation in x86-64 and update the JIT to
take care of vsyscall page in addition to userspace addresses.
- Update bpf_testmod to test for vsyscall addresses.
V4: https://lore.kernel.org/bpf/20240321124640.8870-1-puranjay12@gmail.com/
Changes in V5:
- Use TASK_SIZE_MAX + PAGE_SIZE, VSYSCALL_ADDR as userspace boundary in
x86-64 JIT.
- Added Acked-by: Ilya Leoshkevich <iii@linux.ibm.com>
V3: https://lore.kernel.org/bpf/20240321120842.78983-1-puranjay12@gmail.com/
Changes in V4:
- Disable this feature on architectures that don't define
CONFIG_ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE.
- By doing the above, we don't need anything explicitly for s390x.
V2: https://lore.kernel.org/bpf/20240321101058.68530-1-puranjay12@gmail.com/
Changes in V3:
- Return 0 from bpf_arch_uaddress_limit() in disabled case because it
returns u64.
- Modify the check in verifier to no do instrumentation when uaddress_limit
is 0.
V1: https://lore.kernel.org/bpf/20240320105436.4781-1-puranjay12@gmail.com/
Changes in V2:
- Disable this feature on s390x.
With BPF_PROBE_MEM, BPF allows de-referencing an untrusted pointer. To
thwart invalid memory accesses, the JITs add an exception table entry for
all such accesses. But in case the src_reg + offset is a userspace address,
the BPF program might read that memory if the user has mapped it.
x86-64 JIT already instruments the BPF_PROBE_MEM based loads with checks to
skip loads from userspace addresses, but is doesn't check for vsyscall page
because it falls in the kernel address space but is considered a userspace
page. The second patch in this series fixes the x86-64 JIT to also skip
loads from the vsyscall page. The last patch updates the bpf_testmod so
this address can be checked as part of the selftests.
Other architectures don't have the complexity of the vsyscall address and
just need to skip loads from the userspace. To make this more scalable and
robust, the verifier is updated in the first patch to instrument
BPF_PROBE_MEM to skip loads from the userspace addresses.
====================
Link: https://lore.kernel.org/r/20240424100210.11982-1-puranjay@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
The vsyscall is a legacy API for fast execution of system calls. It maps
a page at address VSYSCALL_ADDR into the userspace program. This address
is in the top 10MB of the address space:
ffffffffff600000 - ffffffffff600fff | 4 kB | legacy vsyscall ABI
The last commit fixes the x86-64 BPF JIT to skip accessing addresses in
this memory region. Add this address to bpf_testmod_return_ptr() so we
can make sure that it is fixed.
After this change and without the previous commit, subprogs_extable
selftest will crash the kernel.
Signed-off-by: Puranjay Mohan <puranjay@kernel.org>
Link: https://lore.kernel.org/r/20240424100210.11982-4-puranjay@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
When a load is marked PROBE_MEM - e.g. due to PTR_UNTRUSTED access - the
address being loaded from is not necessarily valid. The BPF jit sets up
exception handlers for each such load which catch page faults and 0 out
the destination register.
If the address for the load is outside kernel address space, the load
will escape the exception handling and crash the kernel. To prevent this
from happening, the emits some instruction to verify that addr is > end
of userspace addresses.
x86 has a legacy vsyscall ABI where a page at address 0xffffffffff600000
is mapped with user accessible permissions. The addresses in this page
are considered userspace addresses by the fault handler. Therefore, a
BPF program accessing this page will crash the kernel.
This patch fixes the runtime checks to also check that the PROBE_MEM
address is below VSYSCALL_ADDR.
Example BPF program:
SEC("fentry/tcp_v4_connect")
int BPF_PROG(fentry_tcp_v4_connect, struct sock *sk)
{
*(volatile unsigned long *)&sk->sk_tsq_flags;
return 0;
}
BPF Assembly:
0: (79) r1 = *(u64 *)(r1 +0)
1: (79) r1 = *(u64 *)(r1 +344)
2: (b7) r0 = 0
3: (95) exit
x86-64 JIT
==========
BEFORE AFTER
------ -----
0: nopl 0x0(%rax,%rax,1) 0: nopl 0x0(%rax,%rax,1)
5: xchg %ax,%ax 5: xchg %ax,%ax
7: push %rbp 7: push %rbp
8: mov %rsp,%rbp 8: mov %rsp,%rbp
b: mov 0x0(%rdi),%rdi b: mov 0x0(%rdi),%rdi
-------------------------------------------------------------------------------
f: movabs $0x100000000000000,%r11 f: movabs $0xffffffffff600000,%r10
19: add $0x2a0,%rdi 19: mov %rdi,%r11
20: cmp %r11,%rdi 1c: add $0x2a0,%r11
23: jae 0x0000000000000029 23: sub %r10,%r11
25: xor %edi,%edi 26: movabs $0x100000000a00000,%r10
27: jmp 0x000000000000002d 30: cmp %r10,%r11
29: mov 0x0(%rdi),%rdi 33: ja 0x0000000000000039
--------------------------------\ 35: xor %edi,%edi
2d: xor %eax,%eax \ 37: jmp 0x0000000000000040
2f: leave \ 39: mov 0x2a0(%rdi),%rdi
30: ret \--------------------------------------------
40: xor %eax,%eax
42: leave
43: ret
Signed-off-by: Puranjay Mohan <puranjay@kernel.org>
Link: https://lore.kernel.org/r/20240424100210.11982-3-puranjay@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Currently, when kdb is compiled with keyboard support, then we will use
schedule_work() to provoke reset of the keyboard status. Unfortunately
schedule_work() gets called from the kgdboc post-debug-exception
handler. That risks deadlock since schedule_work() is not NMI-safe and,
even on platforms where the NMI is not directly used for debugging, the
debug trap can have NMI-like behaviour depending on where breakpoints
are placed.
Fix this by using the irq work system, which is NMI-safe, to defer the
call to schedule_work() to a point when it is safe to call.
Reported-by: Liuye <liu.yeC@h3c.com>
Closes: https://lore.kernel.org/all/20240228025602.3087748-1-liu.yeC@h3c.com/
Cc: stable@vger.kernel.org
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20240424-kgdboc_fix_schedule_work-v2-1-50f5a490aec5@linaro.org
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
The current approach to filling tmpbuffer with completion candidates is
confusing, with the buffer management being especially hard to reason
about. That's because it doesn't copy the completion canidate into
tmpbuffer, instead of copies a whole bunch of other nonsense and then
runs the completion search from the middle of tmpbuffer!
Change this to copy nothing but the completion candidate into tmpbuffer.
Pretty much everything else in this patch is renaming to reflect the
above change:
s/p_tmp/tmpbuffer/
s/buf_size/sizeof(tmpbuffer)/
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Justin Stitt <justinstitt@google.com>
Link: https://lore.kernel.org/r/20240424-kgdb_read_refactor-v3-7-f236dbe9828d@linaro.org
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
At several points in kdb_read() there are variants of the following
code pattern (with offsets slightly altered):
memcpy(tmpbuffer, cp, lastchar - cp);
memcpy(cp-1, tmpbuffer, lastchar - cp);
*(--lastchar) = '\0';
There is no need to use tmpbuffer here, since we can use memmove() instead
so refactor in the obvious way. Additionally the strings that are being
copied are already properly terminated so let's also change the code so
that the library calls also move the terminator.
Changing how the terminators are managed has no functional effect for now
but might allow us to retire lastchar at a later point. lastchar, although
stored as a pointer, is functionally equivalent to caching strlen(buffer).
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Justin Stitt <justinstitt@google.com>
Link: https://lore.kernel.org/r/20240424-kgdb_read_refactor-v3-6-f236dbe9828d@linaro.org
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
Currently when the current line should be removed from the display
kdb_read() uses memset() to fill a temporary buffer with spaces.
The problem is not that this could be trivially implemented using a
format string rather than open coding it. The real problem is that
it is possible, on systems with a long kdb_prompt_str, to write past
the end of the tmpbuffer.
Happily, as mentioned above, this can be trivially implemented using a
format string. Make it so!
Cc: stable@vger.kernel.org
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Justin Stitt <justinstitt@google.com>
Link: https://lore.kernel.org/r/20240424-kgdb_read_refactor-v3-5-f236dbe9828d@linaro.org
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
The code that handles case 14 (down) and case 16 (up) has been copy and
pasted despite being byte-for-byte identical. Combine them.
Cc: stable@vger.kernel.org # Not a bug fix but it is needed for later bug fixes
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Justin Stitt <justinstitt@google.com>
Link: https://lore.kernel.org/r/20240424-kgdb_read_refactor-v3-4-f236dbe9828d@linaro.org
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
Currently, if the cursor position is not at the end of the command buffer
and the user uses the Tab-complete functions, then the console does not
leave the cursor in the correct position.
For example consider the following buffer with the cursor positioned
at the ^:
md kdb_pro 10
^
Pressing tab should result in:
md kdb_prompt_str 10
^
However this does not happen. Instead the cursor is placed at the end
(after then 10) and further cursor movement redraws incorrectly. The
same problem exists when we double-Tab but in a different part of the
code.
Fix this by sending a carriage return and then redisplaying the text to
the left of the cursor.
Cc: stable@vger.kernel.org
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Justin Stitt <justinstitt@google.com>
Link: https://lore.kernel.org/r/20240424-kgdb_read_refactor-v3-3-f236dbe9828d@linaro.org
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
Currently when kdb_read() needs to reposition the cursor it uses copy and
paste code that works by injecting an '\0' at the cursor position before
delivering a carriage-return and reprinting the line (which stops at the
'\0').
Tidy up the code by hoisting the copy and paste code into an appropriately
named function. Additionally let's replace the '\0' injection with a
proper field width parameter so that the string will be abridged during
formatting instead.
Cc: stable@vger.kernel.org # Not a bug fix but it is needed for later bug fixes
Tested-by: Justin Stitt <justinstitt@google.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Link: https://lore.kernel.org/r/20240424-kgdb_read_refactor-v3-2-f236dbe9828d@linaro.org
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
Currently, when the user attempts symbol completion with the Tab key, kdb
will use strncpy() to insert the completed symbol into the command buffer.
Unfortunately it passes the size of the source buffer rather than the
destination to strncpy() with predictably horrible results. Most obviously
if the command buffer is already full but cp, the cursor position, is in
the middle of the buffer, then we will write past the end of the supplied
buffer.
Fix this by replacing the dubious strncpy() calls with memmove()/memcpy()
calls plus explicit boundary checks to make sure we have enough space
before we start moving characters around.
Reported-by: Justin Stitt <justinstitt@google.com>
Closes: https://lore.kernel.org/all/CAFhGd8qESuuifuHsNjFPR-Va3P80bxrw+LqvC8deA8GziUJLpw@mail.gmail.com/
Cc: stable@vger.kernel.org
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Justin Stitt <justinstitt@google.com>
Tested-by: Justin Stitt <justinstitt@google.com>
Link: https://lore.kernel.org/r/20240424-kgdb_read_refactor-v3-1-f236dbe9828d@linaro.org
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
This fixes the MediaTek SVS driver to look for the right thermal zone
names, and adds a missing Kconfig dependency for mtk-socinfo.
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Merge tag 'mtk-soc-fixes-for-v6.9' of https://git.kernel.org/pub/scm/linux/kernel/git/mediatek/linux into for-next
MediaTek driver fixes for v6.9
This fixes the MediaTek SVS driver to look for the right thermal zone
names, and adds a missing Kconfig dependency for mtk-socinfo.
This reworks the memory layout of the argument buffers passed to trusted
applications in QSEECOM, to avoid failures and system crashes.
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Merge tag 'qcom-drivers-fixes-for-6.9' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into for-next
Qualcomm driver fix for v6.9
This reworks the memory layout of the argument buffers passed to trusted
applications in QSEECOM, to avoid failures and system crashes.
* tag 'qcom-drivers-fixes-for-6.9' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux:
firmware: qcom: uefisecapp: Fix memory related IO errors and crashes
Link: https://lore.kernel.org/r/20240420163816.1133528-1-andersson@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Add the NVreg_RegistryDwords command line parameter, which allows
specifying additional registry keys to be sent to GSP-RM. This
allows additional configuration, debugging, and experimentation
with GSP-RM, which uses these keys to alter its behavior.
Note that these keys are passed as-is to GSP-RM, and Nouveau does
not parse them. This is in contrast to the Nvidia driver, which may
parse some of the keys to configure some functionality in concert with
GSP-RM. Therefore, any keys which also require action by the driver
may not function correctly when passed by Nouveau. Caveat emptor.
The name and format of NVreg_RegistryDwords is the same as used by
the Nvidia driver, to maintain compatibility.
Signed-off-by: Timur Tabi <ttabi@nvidia.com>
Signed-off-by: Danilo Krummrich <dakr@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240417215317.3490856-1-ttabi@nvidia.com
This fixes some dts validation issues against bindings for multiple SoCs,
GPU voltage constraints for Chromebook devices, missing gce-client-reg
on various nodes (performance issues) on MT8183/92/95, and also fixes
boot issues on MT8195 when SPMI is built as module.
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Merge tag 'mtk-dts64-fixes-for-v6.9' of https://git.kernel.org/pub/scm/linux/kernel/git/mediatek/linux into for-next
MediaTek ARM64 DTS fixes for v6.9
This fixes some dts validation issues against bindings for multiple SoCs,
GPU voltage constraints for Chromebook devices, missing gce-client-reg
on various nodes (performance issues) on MT8183/92/95, and also fixes
boot issues on MT8195 when SPMI is built as module.
* tag 'mtk-dts64-fixes-for-v6.9' of https://git.kernel.org/pub/scm/linux/kernel/git/mediatek/linux:
arm64: dts: mediatek: mt2712: fix validation errors
arm64: dts: mediatek: mt7986: prefix BPI-R3 cooling maps with "map-"
arm64: dts: mediatek: mt7986: drop invalid thermal block clock
arm64: dts: mediatek: mt7986: drop "#reset-cells" from Ethernet controller
arm64: dts: mediatek: mt7986: drop invalid properties from ethsys
arm64: dts: mediatek: mt7622: drop "reset-names" from thermal block
arm64: dts: mediatek: mt7622: fix ethernet controller "compatible"
arm64: dts: mediatek: mt7622: fix IR nodename
arm64: dts: mediatek: mt7622: fix clock controllers
arm64: dts: mediatek: mt8186-corsola: Update min voltage constraint for Vgpu
arm64: dts: mediatek: mt8183-kukui: Use default min voltage for MT6358
arm64: dts: mediatek: mt8195-cherry: Update min voltage constraint for MT6315
arm64: dts: mediatek: mt8192-asurada: Update min voltage constraint for MT6315
arm64: dts: mediatek: cherry: Describe CPU supplies
arm64: dts: mediatek: mt8195: Add missing gce-client-reg to mutex1
arm64: dts: mediatek: mt8195: Add missing gce-client-reg to mutex
arm64: dts: mediatek: mt8195: Add missing gce-client-reg to vpp/vdosys
arm64: dts: mediatek: mt8192: Add missing gce-client-reg to mutex
arm64: dts: mediatek: mt8183: Add power-domains properity to mfgcfg
