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| author | Vitaly Kuznetsov <vkuznets@redhat.com> | 2016-06-30 17:56:36 +0200 |
|---|---|---|
| committer | David Vrabel <david.vrabel@citrix.com> | 2016-07-25 13:30:53 +0100 |
| commit | 3e9e57fad3d8530aa30787f861c710f598ddc4e7 (patch) | |
| tree | f437f258cbf0b76537d5e51f37a9f45381d4bf0a /arch/x86/include/asm/cpu.h | |
| parent | de2f5537b397249e91cafcbed4de64a24818542e (diff) | |
| download | linux-0-day-3e9e57fad3d8530aa30787f861c710f598ddc4e7.tar.gz linux-0-day-3e9e57fad3d8530aa30787f861c710f598ddc4e7.tar.xz | |
x86/acpi: store ACPI ids from MADT for future usage
Currently we don't save ACPI ids (unlike LAPIC ids which go to
x86_cpu_to_apicid) from MADT and we may need this information later.
Particularly, ACPI ids is the only existent way for a PVHVM Xen guest
to figure out Xen's idea of its vCPUs ids before these CPUs boot and
in some cases these ids diverge from Linux's cpu ids.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Diffstat (limited to 'arch/x86/include/asm/cpu.h')
| -rw-r--r-- | arch/x86/include/asm/cpu.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/include/asm/cpu.h b/arch/x86/include/asm/cpu.h index 678637ad74763..a7fb9ddab16a3 100644 --- a/arch/x86/include/asm/cpu.h +++ b/arch/x86/include/asm/cpu.h @@ -16,6 +16,7 @@ extern void prefill_possible_map(void); static inline void prefill_possible_map(void) {} #define cpu_physical_id(cpu) boot_cpu_physical_apicid +#define cpu_acpi_id(cpu) 0 #define safe_smp_processor_id() 0 #define stack_smp_processor_id() 0 |