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authorLinus Torvalds <torvalds@linux-foundation.org>2022-03-21 21:11:48 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2022-03-21 21:11:48 +0300
commitd752e211146586dd654537a8b5282a6cf08a568f (patch)
treec24ab95b06689374e951ba45028e8f6c04aef144 /Documentation/ABI
parent5e8919170ad683436a1a1305e1795dc1d56f8906 (diff)
parent08f253ec3767bcfafc5d32617a92cee57c63968e (diff)
downloadlinux-d752e211146586dd654537a8b5282a6cf08a568f.tar.xz
Merge tag 'x86_cpu_for_v5.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 cpu feature updates from Borislav Petkov: - Merge the AMD and Intel PPIN code into a shared one by both vendors. Add the PPIN number to sysfs so that sockets can be identified when replacement is needed - Minor fixes and cleanups * tag 'x86_cpu_for_v5.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/cpu: Clear SME feature flag when not in use x86/cpufeatures: Put the AMX macros in the word 18 block topology/sysfs: Add PPIN in sysfs under cpu topology topology/sysfs: Add format parameter to macro defining "show" functions for proc x86/cpu: Read/save PPIN MSR during initialization x86/cpu: X86_FEATURE_INTEL_PPIN finally has a CPUID bit x86/cpu: Merge Intel and AMD ppin_init() functions x86/CPU/AMD: Use default_groups in kobj_type
Diffstat (limited to 'Documentation/ABI')
-rw-r--r--Documentation/ABI/stable/sysfs-devices-system-cpu4
-rw-r--r--Documentation/ABI/testing/sysfs-devices-system-cpu6
2 files changed, 10 insertions, 0 deletions
diff --git a/Documentation/ABI/stable/sysfs-devices-system-cpu b/Documentation/ABI/stable/sysfs-devices-system-cpu
index 3965ce504484..902392d7eddf 100644
--- a/Documentation/ABI/stable/sysfs-devices-system-cpu
+++ b/Documentation/ABI/stable/sysfs-devices-system-cpu
@@ -86,6 +86,10 @@ What: /sys/devices/system/cpu/cpuX/topology/die_cpus
Description: internal kernel map of CPUs within the same die.
Values: hexadecimal bitmask.
+What: /sys/devices/system/cpu/cpuX/topology/ppin
+Description: per-socket protected processor inventory number
+Values: hexadecimal.
+
What: /sys/devices/system/cpu/cpuX/topology/die_cpus_list
Description: human-readable list of CPUs within the same die.
The format is like 0-3, 8-11, 14,17.
diff --git a/Documentation/ABI/testing/sysfs-devices-system-cpu b/Documentation/ABI/testing/sysfs-devices-system-cpu
index 2281d5eff403..2ad01cad7f1c 100644
--- a/Documentation/ABI/testing/sysfs-devices-system-cpu
+++ b/Documentation/ABI/testing/sysfs-devices-system-cpu
@@ -73,6 +73,7 @@ What: /sys/devices/system/cpu/cpuX/topology/core_id
/sys/devices/system/cpu/cpuX/topology/physical_package_id
/sys/devices/system/cpu/cpuX/topology/thread_siblings
/sys/devices/system/cpu/cpuX/topology/thread_siblings_list
+ /sys/devices/system/cpu/cpuX/topology/ppin
Date: December 2008
Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org>
Description: CPU topology files that describe a logical CPU's relationship
@@ -103,6 +104,11 @@ Description: CPU topology files that describe a logical CPU's relationship
thread_siblings_list: human-readable list of cpuX's hardware
threads within the same core as cpuX
+ ppin: human-readable Protected Processor Identification
+ Number of the socket the cpu# belongs to. There should be
+ one per physical_package_id. File is readable only to
+ admin.
+
See Documentation/admin-guide/cputopology.rst for more information.