diff options
| author | Kirill A. Shutemov <[email protected]> | 2024-06-14 12:59:01 +0300 |
|---|---|---|
| committer | Borislav Petkov (AMD) <[email protected]> | 2024-06-17 17:46:20 +0200 |
| commit | 26ba7353caaa7140561d3f7693a77a3eb68c722c (patch) | |
| tree | 4c1305cbc1c7cbd0b7c581b5dae033dadb51363f /arch/x86/include/asm/smp.h | |
| parent | db0936830a2fcc35e2b283275acf61b6d3ae1e11 (diff) | |
x86/smp: Add smp_ops.stop_this_cpu() callback
If the helper is defined, it is called instead of halt() to stop the CPU at the
end of stop_this_cpu() and on crash CPU shutdown.
ACPI MADT will use it to hand over the CPU to BIOS in order to be able to wake
it up again after kexec.
Signed-off-by: Kirill A. Shutemov <[email protected]>
Signed-off-by: Borislav Petkov (AMD) <[email protected]>
Reviewed-by: Thomas Gleixner <[email protected]>
Acked-by: Kai Huang <[email protected]>
Tested-by: Tao Liu <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Diffstat (limited to 'arch/x86/include/asm/smp.h')
| -rw-r--r-- | arch/x86/include/asm/smp.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/include/asm/smp.h b/arch/x86/include/asm/smp.h index a35936b512fe..ca073f40698f 100644 --- a/arch/x86/include/asm/smp.h +++ b/arch/x86/include/asm/smp.h @@ -35,6 +35,7 @@ struct smp_ops { int (*cpu_disable)(void); void (*cpu_die)(unsigned int cpu); void (*play_dead)(void); + void (*stop_this_cpu)(void); void (*send_call_func_ipi)(const struct cpumask *mask); void (*send_call_func_single_ipi)(int cpu); |