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1,399,042 commits

Author SHA1 Message Date
Shiju Jose
5e5ac21f62 cxl/mbox: Add GET_FEATURE mailbox command
Add support for GET_FEATURE mailbox command.

CXL spec r3.2 section 8.2.9.6 describes optional device specific features.
The settings of a feature can be retrieved using Get Feature command.
CXL spec r3.2 section 8.2.9.6.2 describes Get Feature command.

Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Li Ming <ming.li@zohomail.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Shiju Jose <shiju.jose@huawei.com>
Link: https://patch.msgid.link/20250220194438.2281088-5-dave.jiang@intel.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
2025-02-26 08:51:31 -07:00
Dave Jiang
44818d387e cxl/test: Add Get Supported Features mailbox command support
Add cxl-test emulation of Get Supported Features mailbox command.
Currently only adding a test feature with feature identifier of
all f's for testing.

Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Li Ming <ming.li@zohomail.com>
Link: https://patch.msgid.link/20250220194438.2281088-4-dave.jiang@intel.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
2025-02-26 08:51:31 -07:00
Dave Jiang
f0e6a2329b cxl: Add Get Supported Features command for kernel usage
CXL spec r3.2 8.2.9.6.1 Get Supported Features (Opcode 0500h)
The command retrieve the list of supported device-specific features
(identified by UUID) and general information about each Feature.

The driver will retrieve the Feature entries in order to make checks and
provide information for the Get Feature and Set Feature command. One of
the main piece of information retrieved are the effects a Set Feature
command would have for a particular feature. The retrieved Feature
entries are stored in the cxl_mailbox context.

The setup of Features is initiated via devm_cxl_setup_features() during the
pci probe function before the cxl_memdev is enumerated.

Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Li Ming <ming.li@zohomail.com>
Reviewed-by: Davidlohr Bueso <dave@stgolabs.net>
Tested-by: Shiju Jose <shiju.jose@huawei.com>
Link: https://patch.msgid.link/20250220194438.2281088-3-dave.jiang@intel.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
2025-02-26 08:51:27 -07:00
Aradhya Bhatia
eef3ede533 drm/xe/oa: Refactor WAs to use XE_WA() macro
Refactor Wa_18013179988, Wa_14015568240, Wa_1508761755, and
Wa_1509372804, to use the proper workaround-check implementation for
out-of-band workarounds, XE_WA(), and drop the use of the platform
based WA selection.

Reviewed-by: Tejas Upadhyay <tejas.upadhyay@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Aradhya Bhatia <aradhya.bhatia@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250220094645.358647-3-aradhya.bhatia@intel.com
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
2025-02-26 07:50:11 -08:00
Aradhya Bhatia
8c5fe7d88b drm/xe: Add Wa_16021333562 and Wa_14016712196
Wa_16021333562 and Wa_14016712196 are permanent workarounds that apply
to multiple platforms. Wa_16021333562 applies to platforms ranging from
TGL (12.00) to Xe_LPM (13.00), while Wa_14016712196 from DG2 (12.55) to
Xe_LPG (12.74).

Reviewed-by: Tejas Upadhyay <tejas.upadhyay@intel.com>
Signed-off-by: Aradhya Bhatia <aradhya.bhatia@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250220094645.358647-2-aradhya.bhatia@intel.com
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
2025-02-26 07:50:11 -08:00
Dave Jiang
cbbca60a1e cxl: Enumerate feature commands
Add feature commands enumeration code in order to detect and enumerate
the 3 feature related commands "get supported features", "get feature",
and "set feature". The enumeration will help determine whether the driver
can issue any of the 3 commands to the device.

Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Li Ming <ming.li@zohomail.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Davidlohr Bueso <dave@stgolabs.net>
Tested-by: Shiju Jose <shiju.jose@huawei.com>
Link: https://patch.msgid.link/20250220194438.2281088-2-dave.jiang@intel.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
2025-02-26 08:49:41 -07:00
Paul Mackerras
aca95fb6bb powerpc/microwatt: Add SMP support
This adds support for Microwatt systems with more than one core, and
updates the device tree for a 2-core version.

The secondary CPUs are started and sent to spin in __secondary_hold
very early on, in the platform probe function.  The reason for doing
this is so that they are there when smp_release_cpus() gets called,
which is before the platform init_smp function or even the platform
setup_arch function gets called.

Note that having two CPUs in the device tree doesn't preclude
operation with only one CPU.  The SYSCON_CPU_CTRL register has a
read-only field which indicates the number of CPU cores, so
microwatt_init_smp() will only start as many CPU cores as are present
in the system, and any extra CPU device-tree nodes will just be
ignored.

Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/Z5xt8aooKyXZv6Kf@thinks.paulus.ozlabs.org
2025-02-26 21:16:48 +05:30
Paul Mackerras
3d45a3d0d2 powerpc: Define config option for processors with broadcast TLBIE
Power ISA v3.0 (and later) implementations in the Linux Compliancy
Subset and lower are not required to implement broadcast TLBIE, and in
fact Microwatt doesn't.

To avoid the need to specify "disable_tlbie" on the kernel command
line on SMP Microwatt systems, this defines a config option that
asserts that the platform implements broadcast TLBIE.  This option is
selected by the pseries and powernv platforms, but not by microwatt.
Note that this option is only relevant when the radix MMU is being
used, so platforms without a radix MMU don't need it.

Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/Z5xtvdozEfEmRyeI@thinks.paulus.ozlabs.org
2025-02-26 21:16:48 +05:30
Paul Mackerras
2b0a438d53 powerpc/microwatt: Define an idle power-save function
This uses the 'wait' instruction to pause instruction execution when
idle until an interrupt occurs.

Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/Z5xtl1m_Gqc-HLjY@thinks.paulus.ozlabs.org
2025-02-26 21:16:48 +05:30
Paul Mackerras
78099fe1e3 powerpc/microwatt: Device-tree updates
Microwatt now implements ISA v3.1 (SFFS compliancy subset), including
prefixed instructions, scv/rfscv, and the FSCR, HFSCR, TAR, and CTRL
registers.  The privileged mode of operation is now hypervisor mode
and there is no privileged non-hypervisor mode; the MSR[HV] bit is
forced to 1.

Besides updating the ibm,powerpc-cpu-features property to reflect the
above, this also makes the following changes relating to peripheral
devices:

- Add gpio controller.
- Remove high-speed property from SD controller, for the case where
  the interface is connected through 200 ohm protection resisters.
- Put an alias for the ethernet in /chosen.

Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Acked-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/Z5xtdGSacrWz7swi@thinks.paulus.ozlabs.org
2025-02-26 21:16:48 +05:30
Paul Mackerras
81bb6490b7 powerpc/microwatt: Select COMMON_CLK in order to get the clock framework
This is to allow us to select Litex MMC host controller driver, which
drives the litesdcard gateware.

Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Acked-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/Z5xtT47QsnFpxc5E@thinks.paulus.ozlabs.org
2025-02-26 21:16:48 +05:30
Michael Ellerman
5722915493 net: toshiba: Remove reference to PPC_IBM_CELL_BLADE
Remove a reference to PPC_IBM_CELL_BLADE which has been removed.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20241218105523.416573-25-mpe@ellerman.id.au
2025-02-26 21:15:18 +05:30
Michael Ellerman
d9fefcea81 net: spider_net: Remove powerpc Cell driver
This driver can no longer be built since support for IBM Cell Blades was
removed, in particular PPC_IBM_CELL_BLADE.

Remove the driver and the documentation.
Remove the MAINTAINERS entry, and add Ishizaki and Geoff to CREDITS.

Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20241218105523.416573-24-mpe@ellerman.id.au
2025-02-26 21:15:18 +05:30
Michael Ellerman
16479389cf cpufreq: ppc_cbe: Remove powerpc Cell driver
This driver can no longer be built since support for IBM Cell Blades was
removed, in particular CBE_RAS.

Remove the driver.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20241218105523.416573-22-mpe@ellerman.id.au
2025-02-26 21:15:09 +05:30
Michael Ellerman
333e8eb3e0 genirq: Remove IRQ_EDGE_EOI_HANDLER
The powerpc Cell blade support, now removed, was the only user of
IRQ_EDGE_EOI_HANDLER, so remove it.

Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20241218105523.416573-21-mpe@ellerman.id.au
2025-02-26 21:15:09 +05:30
Michael Ellerman
215bd64ada docs: Remove reference to removed CBE_CPUFREQ_SPU_GOVERNOR
Remove a reference to CBE_CPUFREQ_SPU_GOVERNOR which has been removed.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20241218105523.416573-20-mpe@ellerman.id.au
2025-02-26 21:15:09 +05:30
Michael Ellerman
b78e0bff85 powerpc: Remove UDBG_RTAS_CONSOLE
The IBM Cell blade support was the last user of UDBG_RTAS_CONSOLE.

Although it's still possible to build it via
PPC_EARLY_DEBUG_UDBG_RTAS_CONSOLE, AFAIK it's not useful on any
other platfoms, because only Cell and JS20 era machines provided the
RTAS get/put-term-char functions.

If anyone is using it or needs it we can always resurrect it from git.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20241218105523.416573-19-mpe@ellerman.id.au
2025-02-26 21:15:09 +05:30
Michael Ellerman
1b52e091e7 powerpc/io: Use standard barrier macros in io.c
io.c uses open-coded barriers. Update it to use the equivalent but in
macro form.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20241218105523.416573-18-mpe@ellerman.id.au
2025-02-26 21:15:09 +05:30
Michael Ellerman
76c7d4300d powerpc/io: Rename _insw_ns() etc.
The "_ns" suffix was "historical" in 2006, finally remove it.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20241218105523.416573-17-mpe@ellerman.id.au
2025-02-26 21:15:09 +05:30
Michael Ellerman
0305292f17 powerpc/io: Use generic raw accessors
The raw accessors are identical to the generic versions, use the generic
versions.

Suggested-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20241218105523.416573-16-mpe@ellerman.id.au
2025-02-26 21:15:09 +05:30
Michael Ellerman
c051451b7a powerpc/io: Spell-out PCI_IO_ADDR
PCI_IO_ADDR is a ppc-ism, which obscures the fact that some of the
powerpc accessors are identical to the generic ones. So remove it and
spell out the type fully.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20241218105523.416573-15-mpe@ellerman.id.au
2025-02-26 21:15:09 +05:30
Michael Ellerman
8a55941aed powerpc/io: Wrap port calculation in a macro
The calculation of the IO port is repeated several times, wrap it in
a macro, in particular to avoid spelling out the cast multiple times.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20241218105523.416573-14-mpe@ellerman.id.au
2025-02-26 21:15:08 +05:30
Michael Ellerman
41c8992c02 powerpc/io: Remove unnecessary indirection
Some of the __do_xxx() defines do nothing useful, they just existed to
make the previous hooking macros work. So remove them.

Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20241218105523.416573-13-mpe@ellerman.id.au
2025-02-26 21:15:08 +05:30
Michael Ellerman
15efd61fa7 powerpc/io: Unhook MMIO accessors
Now that PPC_INDIRECT_MMIO is removed, it's not possible/necessary
to hook any of the "memory" accessors, so turn them back into regular
static inlines, and restrict the hooking mechanism to the "pio"
accessors only.

Move the #defines that signal each routine is implemented next to the
implementation, and update the out-of-date comment.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20241218105523.416573-12-mpe@ellerman.id.au
2025-02-26 21:15:08 +05:30
Michael Ellerman
de9cc05822 powerpc/io: Remove PCI_FIX_ADDR
Now that PPC_INDIRECT_MMIO is removed, PCI_FIX_ADDR does nothing, so
remove it.

Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20241218105523.416573-11-mpe@ellerman.id.au
2025-02-26 21:15:08 +05:30
Michael Ellerman
6584845b3d powerpc/io: Remove PPC_INDIRECT_MMIO
The Cell blade support was the last user of PPC_INDIRECT_MMIO, so it can
now be removed.

PPC_INDIRECT_PIO is still used by Power8 powernv, so it needs to remain.

Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20241218105523.416573-10-mpe@ellerman.id.au
2025-02-26 21:15:08 +05:30
Michael Ellerman
478e1709ad powerpc/io: Remove PPC_IO_WORKAROUNDS
The Cell blade support was the last user of PPC_IO_WORKAROUNDS, so they
can now be removed.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20241218105523.416573-9-mpe@ellerman.id.au
2025-02-26 21:15:08 +05:30
Michael Ellerman
f026dffd54 powerpc: Remove PPC_OF_PLATFORM_PCI
The Cell blade support was the last user of PPC_OF_PLATFORM_PCI, so
remove it.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20241218105523.416573-8-mpe@ellerman.id.au
2025-02-26 21:15:08 +05:30
Michael Ellerman
bd4a83428b powerpc: Remove DCR_MMIO and the DCR generic layer
The Cell blade support was the last user of DCR_MMIO, so it can now
be removed.

That only leaves DCR_NATIVE, meaning the DCR generic layer which allows
using either DCR_NATIVE or DCR_MMIO is also unnecessary, remove it too.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20241218105523.416573-7-mpe@ellerman.id.au
2025-02-26 21:15:08 +05:30
Michael Ellerman
41cc49efff powerpc/xmon: Remove SPU debug and disassembly
Now that the IBM Cell Blade support is removed, the xmon SPU support is
effectively unusable. That is because PS3 doesn't implement udbg_getc
which is required to send input to xmon.

So remove the xmon SPU support.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20241218105523.416573-6-mpe@ellerman.id.au
2025-02-26 21:15:08 +05:30
Michael Ellerman
11923e0d9d powerpc/cell: Remove CBE_CPUFREQ_SPU_GOVERNOR
Although this driver is still buildable, it can't actually do anything
in practice now that the low-level cpufreq driver for Cell has been
disabled due to the removal of CBE_RAS.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20241218105523.416573-5-mpe@ellerman.id.au
2025-02-26 21:15:07 +05:30
Michael Ellerman
de9d1be44e powerpc: Remove IBM_CELL_BLADE & SPIDER_NET references
The symbols are no longer selectable so remove references to them.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20241218105523.416573-4-mpe@ellerman.id.au
2025-02-26 21:15:07 +05:30
Michael Ellerman
38efe5a9a7 powerpc: Remove PPC_PMI and driver
CONFIG_PPC_PMI is no longer selectable now that PPC_IBM_CELL_BLADE has
been removed, via the dependency on PPC_IBM_CELL_POWERBUTTON.

So remove it and the driver, and the pmi.h header which it was the only
user of.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20241218105523.416573-3-mpe@ellerman.id.au
2025-02-26 21:15:07 +05:30
Michael Ellerman
8e4f1a3495 powerpc: Remove some Cell leftovers
Now that CONFIG_PPC_CELL_NATIVE is removed, iommu_fixed_is_weak will
always be false, so remove it entirely.

Also remove a hack/quirk in the HTAB code that was only used on Cell.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20241218105523.416573-2-mpe@ellerman.id.au
2025-02-26 21:15:07 +05:30
Michael Ellerman
05bf59fbee powerpc/cell: Remove support for IBM Cell Blades
IBM Cell Blades used the Cell processor and the "blade" server form
factor. They were sold as models QS20, QS21 & QS22 from roughly 2006 to
2012 [1]. They were used in a few supercomputers (eg. Roadrunner) that
have since been dismantled, and were not that widely used otherwise.

Until recently I still had a working QS22, which meant I was able to
keep the platform support working, but unfortunately that machine has
now died.

I'm not aware of any users. If there is a user that wants to keep the
upstream support working, we can look at bringing some of the code back
as appropriate.

See previous discussion at [2].

Remove the top-level config symbol PPC_IBM_CELL_BLADE, and then
the dependent symbols PPC_CELL_NATIVE, PPC_CELL_COMMON, CBE_RAS,
PPC_IBM_CELL_RESETBUTTON, PPC_IBM_CELL_POWERBUTTON, CBE_THERM, and
AXON_MSI. Then remove the associated C files and headers, and trim
unused header content (some is shared with PS3).

Note that PPC_CELL_COMMON sounds like it would build code shared with
PS3, but it does not. It's a relic from when code was shared between the
Blade support and QPACE support.

Most of the primary authors already have CREDITS entries, with the
exception of Christian, so add one for him.

[1]: https://www.theregister.com/2011/06/28/ibm_kills_qs22_blade
[2]: https://lore.kernel.org/linuxppc-dev/60581044-df82-40ad-b94c-56468007a93e@app.fastmail.com

Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Jeremy Kerr <jk@ozlabs.org>
Acked-by: Segher Boessenkool <segher@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20241218105523.416573-1-mpe@ellerman.id.au
2025-02-26 21:15:07 +05:30
Christophe Leroy
f50b45626e powerpc/static_call: Implement inline static calls
Implement inline static calls:
- Put a 'bl' to the destination function ('b' if tail call)
- Put a 'nop' when the destination function is NULL ('blr' if tail call)
- Put a 'li r3,0' when the destination is the RET0 function and not
a tail call.

If the destination is too far (over the 32Mb limit), go via the
trampoline.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/3dbd0b2ba577c942729235d0211d04a406653d81.1733245362.git.christophe.leroy@csgroup.eu
2025-02-26 21:09:43 +05:30
Christophe Leroy
6626f98ed5 powerpc: Prepare arch_static_call_transform() for supporting inline static calls
Reorganise arch_static_call_transform() in order to ease the support
of inline static calls in following patch:
- remove 'target' to nhide whether it is a 'return 0' or not.
- Don't bail out if 'tramp' is NULL, just do nothing until next patch.

Note that 'target' was 'tramp + PPC_SCT_RET0', is_short was perforce
true. So in the 'if (func && !is_short)' leg, target was perforce
equal to 'func'.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/7a8b9245e773307c315c2548a4c6cad570ac2648.1733245362.git.christophe.leroy@csgroup.eu
2025-02-26 21:09:43 +05:30
Christophe Leroy
bb7f054f4d objtool/powerpc: Add support for decoding all types of uncond branches
Add support for 'bla' instruction.

This is done by 'flagging' the address as an absolute address so that
arch_jump_destination() can calculate it as expected. Because code is
_always_ 4 bytes aligned, use bit 30 as flag.

Also add support for 'b' and 'ba' instructions. Objtool call them jumps.

And make sure the special 'bl .+4' used by clang in relocatable code is
not seen as an 'unannotated intra-function call'. clang should use the
special 'bcl 20,31,.+4' form like gcc but for the time being it does not
so lets work around that.

Link: https://github.com/llvm/llvm-project/issues/128644
Reviewed-by: Segher Boessenkool <segher@kewrnel.crashing.org>
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/bf0b4d554547bc34fa3d1af5b4e62a84c0bc182b.1740470510.git.christophe.leroy@csgroup.eu
2025-02-26 21:09:43 +05:30
Christophe Leroy
d856bc3ac7 static_call_inline: Provide trampoline address when updating sites
In preparation of support of inline static calls on powerpc, provide
trampoline address when updating sites, so that when the destination
function is too far for a direct function call, the call site is
patched with a call to the trampoline.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/5efe0cffc38d6f69b1ec13988a99f1acff551abf.1733245362.git.christophe.leroy@csgroup.eu
2025-02-26 21:09:43 +05:30
Mahe Tardy
9138048bb5 selftests/bpf: add cgroup_skb netns cookie tests
Add netns cookie test that verifies the helper is now supported and work
in the context of cgroup_skb programs.

Signed-off-by: Mahe Tardy <mahe.tardy@gmail.com>
Link: https://lore.kernel.org/r/20250225125031.258740-2-mahe.tardy@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2025-02-26 07:35:51 -08:00
Mahe Tardy
c221d3744a bpf: add get_netns_cookie helper to cgroup_skb programs
This is needed in the context of Cilium and Tetragon to retrieve netns
cookie from hostns when traffic leaves Pod, so that we can correlate
skb->sk's netns cookie.

Signed-off-by: Mahe Tardy <mahe.tardy@gmail.com>
Link: https://lore.kernel.org/r/20250225125031.258740-1-mahe.tardy@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2025-02-26 07:35:51 -08:00
Sasha Finkelstein
44db68dee1 arm64: dts: apple: Add touchbar digitizer nodes
Adds device tree entries for the touchbar digitizer

Co-developed-by: Janne Grunau <j@jannau.net>
Signed-off-by: Janne Grunau <j@jannau.net>
Reviewed-by: Neal Gompa <neal@gompa.dev>
Acked-by: Sven Peter <sven@svenpeter.dev>
Signed-off-by: Sasha Finkelstein <fnkl.kernel@gmail.com>
Link: https://lore.kernel.org/r/20250225-z2-dts-v1-1-df101a7c17c8@gmail.com
Signed-off-by: Sven Peter <sven@svenpeter.dev>
2025-02-26 15:33:46 +00:00
Michael Jeanson
79e10dad1c rseq: Update kernel fields in lockstep with CONFIG_DEBUG_RSEQ=y
With CONFIG_DEBUG_RSEQ=y, an in-kernel copy of the read-only fields is
kept synchronized with the user-space fields. Ensure the updates are
done in lockstep in case we error out on a write to user-space.

Fixes: 7d5265ffcd ("rseq: Validate read-only fields under DEBUG_RSEQ config")
Signed-off-by: Michael Jeanson <mjeanson@efficios.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Link: https://lore.kernel.org/r/20250225202500.731245-1-mjeanson@efficios.com
2025-02-26 16:20:23 +01:00
Sebastian Andrzej Siewior
e3924279e5 futex: Use a hashmask instead of hashsize
The global hash uses futex_hashsize to save the amount of the hash
buckets that have been allocated during system boot. On each
futex_hash() invocation this number is substracted by one to get the
mask. This can be optimized by saving directly the mask avoiding the
substraction on each futex_hash() invocation.

Rename futex_hashsize to futex_hashmask and save the mask of the
allocated hash map.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Waiman Long <longman@redhat.com>
Link: https://lore.kernel.org/all/20250226091057.bX8vObR4@linutronix.de
2025-02-26 16:07:59 +01:00
Maxime Ripard
099b79f943
drm/doc: Document KUnit expectations
The DRM and KMS frameworks and helpers gain more and more kunit
coverage, so let's document what our expectations are.

Suggested-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Maíra Canal <mcanal@igalia.com>
Acked-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Simona Vetter <simona.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20250113101100.1373856-1-mripard@kernel.org
Signed-off-by: Maxime Ripard <mripard@kernel.org>
2025-02-26 16:04:15 +01:00
Krzysztof Kozlowski
fb03174d17 arm64: dts: qcom: x1e80100-slim7x: Drop incorrect qcom,ath12k-calibration-variant
There is no such property as qcom,ath12k-calibration-variant: neither in
the bindings nor in the driver.  See dtbs_check:

  x1e80100-lenovo-yoga-slim7x.dtb: wifi@0: 'qcom,ath12k-calibration-variant' does not match any of the regexes: 'pinctrl-[0-9]+'

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20250225093051.58406-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
2025-02-26 08:55:53 -06:00
Krzysztof Kozlowski
cdc117c405 arm64: dts: qcom: qcs8300: Partially revert "arm64: dts: qcom: qcs8300: add QCrypto nodes"
Partially revert commit a86d844099 ("arm64: dts: qcom: qcs8300: add
QCrypto nodes") by dropping the untested QCE device node.  Devicetree
bindings test failures were reported on mailing list on 16th of January
and after two weeks still no fixes:

  qcs8300-ride.dtb: crypto@1dfa000: compatible: 'oneOf' conditional failed, one must be fixed:
    ...
    'qcom,qcs8300-qce' is not one of ['qcom,ipq4019-qce', 'qcom,sm8150-qce']

Reported-by: Rob Herring <robh@kernel.org>
Closes: https://lore.kernel.org/all/CAL_JsqL0HzzGXnCD+z4GASeXNsBxrdw8-qyfHj8S+C2ucK6EPQ@mail.gmail.com/
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20250128115333.95021-2-krzysztof.kozlowski@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
2025-02-26 08:54:53 -06:00
Krzysztof Kozlowski
92979f12a2 arm64: dts: qcom: sa8775p: Partially revert "arm64: dts: qcom: sa8775p: add QCrypto nodes"
Partially revert commit 7ff3da43ef ("arm64: dts: qcom: sa8775p: add
QCrypto nodes") by dropping the untested QCE device node.  Devicetree
bindings test failures were reported on mailing list on 16th of January
and after two weeks still no fixes:

  sa8775p-ride.dtb: crypto@1dfa000: compatible: 'oneOf' conditional failed, one must be fixed:
    ...
    'qcom,sa8775p-qce' is not one of ['qcom,ipq4019-qce', 'qcom,sm8150-qce']

Reported-by: Rob Herring <robh@kernel.org>
Closes: https://lore.kernel.org/all/CAL_JsqJG_w9jyWjVR=QnPuJganG4uj9+9cEXZ__UAiCw2ZYZZA@mail.gmail.com/
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20250128115333.95021-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
2025-02-26 08:54:53 -06:00
Miri Korenblit
95da92e7c6 wifi: iwlwifi: add Debug Host Command APIs
Add the defintition of those APIs, those will be used in a later patch.

Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250212073923.d842253ee55d.I2e8d65f22d5acde70ed6be16f913160a93d06852@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-02-26 15:48:55 +01:00
Miri Korenblit
5098c09a17 wifi: iwlwifi: add IWL_MAX_NUM_IGTKS macro
This macro represents the number of IGTKS the FW can support.
Will be used in a later patch.

Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250212073923.a8e3c7461f13.If63cbc73eaf328b2c1d7c8e57627eb93c35b0c70@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-02-26 15:48:55 +01:00