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| author | Kirill A. Shutemov <[email protected]> | 2024-06-14 12:58:49 +0300 |
|---|---|---|
| committer | Borislav Petkov (AMD) <[email protected]> | 2024-06-17 17:45:34 +0200 |
| commit | 66e48e491d1e1a0f243ebfcb9639b23de1a5db5e (patch) | |
| tree | fa327aaabde7e3d6b6e03bacfcf51dd5dcb11266 /tools/perf/scripts/python/export-to-sqlite.py | |
| parent | 1037e4c53e851682ff8d1ab656567a4d5a333c93 (diff) | |
cpu/hotplug, x86/acpi: Disable CPU offlining for ACPI MADT wakeup
ACPI MADT doesn't allow to offline a CPU after it has been woken up.
Currently, CPU hotplug is prevented based on the confidential computing
attribute which is set for Intel TDX. But TDX is not the only possible user of
the wake up method. Any platform that uses ACPI MADT wakeup method cannot
offline CPU.
Disable CPU offlining on ACPI MADT wakeup enumeration.
This has no visible effects for users: currently, TDX guest is the only platform
that uses the ACPI MADT wakeup method.
Signed-off-by: Kirill A. Shutemov <[email protected]>
Signed-off-by: Borislav Petkov (AMD) <[email protected]>
Reviewed-by: Thomas Gleixner <[email protected]>
Acked-by: Rafael J. Wysocki <[email protected]>
Tested-by: Tao Liu <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Diffstat (limited to 'tools/perf/scripts/python/export-to-sqlite.py')
0 files changed, 0 insertions, 0 deletions