History log of /openbmc/linux/arch/x86/kernel/cpu/scattered.c (Results 26 – 50 of 540)
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# cfd1f6c1 13-Dec-2022 Jiri Kosina <jkosina@suse.cz>

Merge branch 'for-6.2/apple' into for-linus

- new quirks for select Apple keyboards (Kerem Karabay, Aditya Garg)


# 2da68a77 12-Dec-2022 Linus Torvalds <torvalds@linux-foundation.org>

Merge tag 'x86_sgx_for_6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 sgx updates from Dave Hansen:
"The biggest deal in this series is support for a new hardware feature

Merge tag 'x86_sgx_for_6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 sgx updates from Dave Hansen:
"The biggest deal in this series is support for a new hardware feature
that allows enclaves to detect and mitigate single-stepping attacks.

There's also a minor performance tweak and a little piece of the
kmap_atomic() -> kmap_local() transition.

Summary:

- Introduce a new SGX feature (Asynchrounous Exit Notification) for
bare-metal enclaves and KVM guests to mitigate single-step attacks

- Increase batching to speed up enclave release

- Replace kmap/kunmap_atomic() calls"

* tag 'x86_sgx_for_6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/sgx: Replace kmap/kunmap_atomic() calls
KVM/VMX: Allow exposing EDECCSSA user leaf function to KVM guest
x86/sgx: Allow enclaves to use Asynchrounous Exit Notification
x86/sgx: Reduce delay and interference of enclave release

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# e291c116 12-Dec-2022 Dmitry Torokhov <dmitry.torokhov@gmail.com>

Merge branch 'next' into for-linus

Prepare input updates for 6.2 merge window.


Revision tags: v6.1, v6.0.12, v6.0.11, v6.0.10, v5.15.80
# 29583dfc 21-Nov-2022 Thomas Zimmermann <tzimmermann@suse.de>

Merge drm/drm-next into drm-misc-next-fixes

Backmerging to update drm-misc-next-fixes for the final phase
of the release cycle.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>


Revision tags: v6.0.9, v5.15.79
# 002c6ca7 14-Nov-2022 Rodrigo Vivi <rodrigo.vivi@intel.com>

Merge drm/drm-next into drm-intel-next

Catch up on 6.1-rc cycle in order to solve the intel_backlight
conflict on linux-next.

Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>


Revision tags: v6.0.8, v5.15.78, v6.0.7, v5.15.77
# 16a7fe37 31-Oct-2022 Kai Huang <kai.huang@intel.com>

KVM/VMX: Allow exposing EDECCSSA user leaf function to KVM guest

The new Asynchronous Exit (AEX) notification mechanism (AEX-notify)
allows one enclave to receive a notification in the ERESUME after

KVM/VMX: Allow exposing EDECCSSA user leaf function to KVM guest

The new Asynchronous Exit (AEX) notification mechanism (AEX-notify)
allows one enclave to receive a notification in the ERESUME after the
enclave exit due to an AEX. EDECCSSA is a new SGX user leaf function
(ENCLU[EDECCSSA]) to facilitate the AEX notification handling. The new
EDECCSSA is enumerated via CPUID(EAX=0x12,ECX=0x0):EAX[11].

Besides Allowing reporting the new AEX-notify attribute to KVM guests,
also allow reporting the new EDECCSSA user leaf function to KVM guests
so the guest can fully utilize the AEX-notify mechanism.

Similar to existing X86_FEATURE_SGX1 and X86_FEATURE_SGX2, introduce a
new scattered X86_FEATURE_SGX_EDECCSSA bit for the new EDECCSSA, and
report it in KVM's supported CPUIDs.

Note, no additional KVM enabling is required to allow the guest to use
EDECCSSA. It's impossible to trap ENCLU (without completely preventing
the guest from using SGX). Advertise EDECCSSA as supported purely so
that userspace doesn't need to special case EDECCSSA, i.e. doesn't need
to manually check host CPUID.

The inability to trap ENCLU also means that KVM can't prevent the guest
from using EDECCSSA, but that virtualization hole is benign as far as
KVM is concerned. EDECCSSA is simply a fancy way to modify internal
enclave state.

More background about how do AEX-notify and EDECCSSA work:

SGX maintains a Current State Save Area Frame (CSSA) for each enclave
thread. When AEX happens, the enclave thread context is saved to the
CSSA and the CSSA is increased by 1. For a normal ERESUME which doesn't
deliver AEX notification, it restores the saved thread context from the
previously saved SSA and decreases the CSSA. If AEX-notify is enabled
for one enclave, the ERESUME acts differently. Instead of restoring the
saved thread context and decreasing the CSSA, it acts like EENTER which
doesn't decrease the CSSA but establishes a clean slate thread context
using the CSSA for the enclave to handle the notification. After some
handling, the enclave must discard the "new-established" SSA and switch
back to the previously saved SSA (upon AEX). Otherwise, the enclave
will run out of SSA space upon further AEXs and eventually fail to run.

To solve this problem, the new EDECCSSA essentially decreases the CSSA.
It can be used by the enclave notification handler to switch back to the
previous saved SSA when needed, i.e. after it handles the notification.

Signed-off-by: Kai Huang <kai.huang@intel.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Acked-by: Sean Christopherson <seanjc@google.com>
Acked-by: Jarkko Sakkinen <jarkko@kernel.org>
Link: https://lore.kernel.org/all/20221101022422.858944-1-kai.huang%40intel.com

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# d93618da 04-Nov-2022 Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

Merge drm/drm-next into drm-intel-gt-next

Needed to bring in v6.1-rc1 which contains commit f683b9d61319 ("i915: use the VMA iterator")
which is needed for series https://patchwork.freedesktop.org/s

Merge drm/drm-next into drm-intel-gt-next

Needed to bring in v6.1-rc1 which contains commit f683b9d61319 ("i915: use the VMA iterator")
which is needed for series https://patchwork.freedesktop.org/series/110083/ .

Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

show more ...


Revision tags: v5.15.76, v6.0.6, v6.0.5, v5.15.75, v6.0.4
# 14e77332 21-Oct-2022 Nick Terrell <terrelln@fb.com>

Merge branch 'main' into zstd-next


Revision tags: v6.0.3
# 1aca5ce0 20-Oct-2022 Thomas Zimmermann <tzimmermann@suse.de>

Merge drm/drm-fixes into drm-misc-fixes

Backmerging to get v6.1-rc1.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>


# 008f05a7 19-Oct-2022 Mark Brown <broonie@kernel.org>

ASoC: jz4752b: Capture fixes

Merge series from Siarhei Volkau <lis8215@gmail.com>:

The patchset fixes:
- Line In path stays powered off during capturing or
bypass to mixer.
- incorrectly repre

ASoC: jz4752b: Capture fixes

Merge series from Siarhei Volkau <lis8215@gmail.com>:

The patchset fixes:
- Line In path stays powered off during capturing or
bypass to mixer.
- incorrectly represented dB values in alsamixer, et al.
- incorrect represented Capture input selector in alsamixer
in Playback tab.
- wrong control selected as Capture Master

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# a140a6a2 18-Oct-2022 Maxime Ripard <maxime@cerno.tech>

Merge drm/drm-next into drm-misc-next

Let's kick-off this release cycle.

Signed-off-by: Maxime Ripard <maxime@cerno.tech>


# c29a017f 17-Oct-2022 Dmitry Torokhov <dmitry.torokhov@gmail.com>

Merge tag 'v6.1-rc1' into next

Merge with mainline to bring in the latest changes to twl4030 driver.


# 8048b835 16-Oct-2022 Andrew Morton <akpm@linux-foundation.org>

Merge branch 'master' into mm-hotfixes-stable


Revision tags: v6.0.2, v5.15.74, v5.15.73, v6.0.1
# 3871d93b 10-Oct-2022 Linus Torvalds <torvalds@linux-foundation.org>

Merge tag 'perf-core-2022-10-07' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull perf events updates from Ingo Molnar:
"PMU driver updates:

- Add AMD Last Branch Record Extension

Merge tag 'perf-core-2022-10-07' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull perf events updates from Ingo Molnar:
"PMU driver updates:

- Add AMD Last Branch Record Extension Version 2 (LbrExtV2) feature
support for Zen 4 processors.

- Extend the perf ABI to provide branch speculation information, if
available, and use this on CPUs that have it (eg. LbrExtV2).

- Improve Intel PEBS TSC timestamp handling & integration.

- Add Intel Raptor Lake S CPU support.

- Add 'perf mem' and 'perf c2c' memory profiling support on AMD CPUs
by utilizing IBS tagged load/store samples.

- Clean up & optimize various x86 PMU details.

HW breakpoints:

- Big rework to optimize the code for systems with hundreds of CPUs
and thousands of breakpoints:

- Replace the nr_bp_mutex global mutex with the bp_cpuinfo_sem
per-CPU rwsem that is read-locked during most of the key
operations.

- Improve the O(#cpus * #tasks) logic in toggle_bp_slot() and
fetch_bp_busy_slots().

- Apply micro-optimizations & cleanups.

- Misc cleanups & enhancements"

* tag 'perf-core-2022-10-07' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (75 commits)
perf/hw_breakpoint: Annotate tsk->perf_event_mutex vs ctx->mutex
perf: Fix pmu_filter_match()
perf: Fix lockdep_assert_event_ctx()
perf/x86/amd/lbr: Adjust LBR regardless of filtering
perf/x86/utils: Fix uninitialized var in get_branch_type()
perf/uapi: Define PERF_MEM_SNOOPX_PEER in kernel header file
perf/x86/amd: Support PERF_SAMPLE_PHY_ADDR
perf/x86/amd: Support PERF_SAMPLE_ADDR
perf/x86/amd: Support PERF_SAMPLE_{WEIGHT|WEIGHT_STRUCT}
perf/x86/amd: Support PERF_SAMPLE_DATA_SRC
perf/x86/amd: Add IBS OP_DATA2 DataSrc bit definitions
perf/mem: Introduce PERF_MEM_LVLNUM_{EXTN_MEM|IO}
perf/x86/uncore: Add new Raptor Lake S support
perf/x86/cstate: Add new Raptor Lake S support
perf/x86/msr: Add new Raptor Lake S support
perf/x86: Add new Raptor Lake S support
bpf: Check flags for branch stack in bpf_read_branch_records helper
perf, hw_breakpoint: Fix use-after-free if perf_event_open() fails
perf: Use sample_flags for raw_data
perf: Use sample_flags for addr
...

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# 5f8f8574 10-Oct-2022 Dmitry Torokhov <dmitry.torokhov@gmail.com>

Merge branch 'next' into for-linus

Prepare input updates for 6.1 merge window.


Revision tags: v5.15.72
# 97acb6a8 03-Oct-2022 Tvrtko Ursulin <tvrtko.ursulin@intel.com>

Merge drm/drm-next into drm-intel-gt-next

Daniele needs 84d4333c1e28 ("misc/mei: Add NULL check to component match
callback functions") in order to merge the DG2 HuC patches.

Signed-off-by: Tvrtko

Merge drm/drm-next into drm-intel-gt-next

Daniele needs 84d4333c1e28 ("misc/mei: Add NULL check to component match
callback functions") in order to merge the DG2 HuC patches.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

show more ...


Revision tags: v6.0
# 305a72ef 01-Oct-2022 Dan Williams <dan.j.williams@intel.com>

Merge branch 'for-6.1/nvdimm' into libnvdimm-for-next

Add v6.1 content on top of some straggling updates that missed v6.0.


Revision tags: v5.15.71
# 70d1b1a7 27-Sep-2022 Leon Romanovsky <leonro@nvidia.com>

Merge branch 'mlx5-vfio' into mlx5-next

Merge net/mlx5 dependencies for device DMA logging.

Signed-off-by: Leon Romanovsky <leonro@nvidia.com>


# b3bbcc5d 24-Sep-2022 Dan Williams <dan.j.williams@intel.com>

Merge branch 'for-6.0/dax' into libnvdimm-fixes

Pick up another "Soft Reservation" fix for v6.0-final on top of some
straggling nvdimm fixes that missed v5.19.


Revision tags: v5.15.70, v5.15.69, v5.15.68
# a108772d 14-Sep-2022 Maxime Ripard <maxime@cerno.tech>

Merge drm/drm-next into drm-misc-next

We need 6.0-rc1 to merge the backlight rework PR.

Signed-off-by: Maxime Ripard <maxime@cerno.tech>


Revision tags: v5.15.67, v5.15.66
# 2a906db2 06-Sep-2022 Tony Lindgren <tony@atomide.com>

Merge branch 'am5748-fix' into fixes


Revision tags: v5.15.65, v5.15.64
# 917bda9a 29-Aug-2022 Jani Nikula <jani.nikula@intel.com>

Merge drm/drm-next into drm-intel-next

Sync drm-intel-next with v6.0-rc as well as recent drm-intel-gt-next.

Since drm-next does not have commit f0c70d41e4e8 ("drm/i915/guc: remove
runtime info pri

Merge drm/drm-next into drm-intel-next

Sync drm-intel-next with v6.0-rc as well as recent drm-intel-gt-next.

Since drm-next does not have commit f0c70d41e4e8 ("drm/i915/guc: remove
runtime info printing from time stamp logging") yet, only
drm-intel-gt-next, will need to do that as part of the merge here to
build.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>

show more ...


Revision tags: v5.15.63, v5.15.62, v5.15.61
# 257449c6 11-Aug-2022 Sandipan Das <sandipan.das@amd.com>

x86/cpufeatures: Add LbrExtV2 feature bit

CPUID leaf 0x80000022 i.e. ExtPerfMonAndDbg advertises some new performance
monitoring features for AMD processors.

Bit 1 of EAX indicates support for Last

x86/cpufeatures: Add LbrExtV2 feature bit

CPUID leaf 0x80000022 i.e. ExtPerfMonAndDbg advertises some new performance
monitoring features for AMD processors.

Bit 1 of EAX indicates support for Last Branch Record Extension Version 2
(LbrExtV2) features. If found to be set during PMU initialization, the EBX
bits of the same leaf can be used to determine the number of available LBR
entries.

For better utilization of feature words, LbrExtV2 is added as a scattered
feature bit.

[peterz: Rename to AMD_LBR_V2]
Signed-off-by: Sandipan Das <sandipan.das@amd.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Borislav Petkov <bp@suse.de>
Link: https://lore.kernel.org/r/172d2b0df39306ed77221c45ee1aa62e8ae0548d.1660211399.git.sandipan.das@amd.com

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# 93fbff11 17-Aug-2022 Dmitry Torokhov <dmitry.torokhov@gmail.com>

Merge branch 'i2c/make_remove_callback_void-immutable' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux into next

Sync up with the latest I2C code base to get updated prototype of I2C
bus

Merge branch 'i2c/make_remove_callback_void-immutable' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux into next

Sync up with the latest I2C code base to get updated prototype of I2C
bus remove() method.

show more ...


# cf36ae3e 17-Aug-2022 Thomas Zimmermann <tzimmermann@suse.de>

Merge drm/drm-fixes into drm-misc-fixes

Backmerging for v6.0-rc1.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>


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