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[PATCH] x86-64: add genapic_force

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Add genapic_force. Used by the next Intel quirks patch.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Cc: Andi Kleen <ak@suse.de>
Cc: "Li, Shaohua" <shaohua.li@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
This commit is contained in:
Siddha, Suresh B 2006-12-07 02:14:10 +01:00 committed by Andi Kleen
parent 72486f1f8f
commit 9899f826fc
2 changed files with 9 additions and 2 deletions
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9
arch/x86_64/kernel/genapic.c
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@ -33,7 +33,7 @@ extern struct genapic apic_flat;
extern struct genapic apic_physflat; extern struct genapic apic_physflat;
struct genapic *genapic = &apic_flat; struct genapic *genapic = &apic_flat;
struct genapic *genapic_force;
/* /*
* Check the APIC IDs in bios_cpu_apicid and choose the APIC mode. * Check the APIC IDs in bios_cpu_apicid and choose the APIC mode.
@ -46,6 +46,13 @@ void __init clustered_apic_check(void)
u8 cluster_cnt[NUM_APIC_CLUSTERS]; u8 cluster_cnt[NUM_APIC_CLUSTERS];
int max_apic = 0; int max_apic = 0;
/* genapic selection can be forced because of certain quirks.
*/
if (genapic_force) {
genapic = genapic_force;
goto print;
}
#if defined(CONFIG_ACPI) #if defined(CONFIG_ACPI)
/* /*
* Some x86_64 machines use physical APIC mode regardless of how many * Some x86_64 machines use physical APIC mode regardless of how many

2
include/asm-x86_64/genapic.h
View File

@ -30,6 +30,6 @@ struct genapic {
}; };
extern struct genapic *genapic; extern struct genapic *genapic, *genapic_force, apic_flat;
#endif #endif