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| author | Zeng Chi <zengchi@kylinos.cn> | 2026-09-21 18:24:42 +0800 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2026-09-22 08:36:16 -0700 |
| commit | 119e9db233ad0f4cbd4cfb9f9385a7bca378b37d (patch) | |
| tree | 660d50d4139cb750fbde1ae3432452c20726c99d /Documentation/ABI/testing/sysfs-amd-pmc | |
| download | linux-stable-119e9db233ad0f4cbd4cfb9f9385a7bca378b37d.tar.gz linux-stable-119e9db233ad0f4cbd4cfb9f9385a7bca378b37d.zip | |
KVM: Don't pre-reserve xarray entries when storing empty/NULL attributesgrafted
Skip the xarray reservation loop when clearing all memory attributes, as
storing NULL only erases the entry and never needs to allocate, so no
reservation (and no cleanup of a failed one) is required in that case.
Suggested-by: Sean Christopherson <seanjc@google.com>
Cc: David Ballesteros <davimaba.v@proton.me>
Signed-off-by: Zeng Chi <zengchi@kylinos.cn>
Link: https://patch.msgid.link/20260921102442.1232375-1-zeng_chi911@163.com
[sean: split to separate patch]
Signed-off-by: Sean Christopherson <seanjc@google.com>
Diffstat (limited to 'Documentation/ABI/testing/sysfs-amd-pmc')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-amd-pmc | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-amd-pmc b/Documentation/ABI/testing/sysfs-amd-pmc new file mode 100644 index 000000000..c421b7284 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-amd-pmc @@ -0,0 +1,13 @@ +What: /sys/bus/platform/drivers/amd_pmc/*/smu_fw_version +Date: October 2022 +Contact: Mario Limonciello <mario.limonciello@amd.com> +Description: Reading this file reports the version of the firmware loaded to + System Management Unit (SMU) contained in AMD CPUs and + APUs. + +What: /sys/bus/platform/drivers/amd_pmc/*/smu_program +Date: October 2022 +Contact: Mario Limonciello <mario.limonciello@amd.com> +Description: Reading this file reports the program corresponding to the SMU + firmware version. The program field is used to disambiguate two + APU/CPU models that can share the same firmware binary. |