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| author | Eric W. Biederman <ebiederm@xmission.com> | 2005-06-25 14:57:41 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-06-25 16:24:46 -0700 |
| commit | 9635b47d910223745258768418003580ef7dba17 (patch) | |
| tree | b61adfddad3bf3069c9fa379b34805420b4ef85c /include/asm-i386/apic.h | |
| parent | 8f43d03fe2c4962c11d8227ac9505e590bad758b (diff) | |
| download | linux-9635b47d910223745258768418003580ef7dba17.tar.gz linux-9635b47d910223745258768418003580ef7dba17.tar.bz2 linux-9635b47d910223745258768418003580ef7dba17.zip | |
[PATCH] kexec: x86: local apic fix
From: "Maciej W. Rozycki" <macro@linux-mips.org>
Fix a kexec problem whcih causes local APIC detection failure.
The problem is detect_init_APIC() is called early, before the command line
have been processed. Therefore "lapic" (and "nolapic") have not been seen,
yet.
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: Eric Biederman <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-i386/apic.h')
| -rw-r--r-- | include/asm-i386/apic.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/asm-i386/apic.h b/include/asm-i386/apic.h index a5810cf7b578..53268cd9306e 100644 --- a/include/asm-i386/apic.h +++ b/include/asm-i386/apic.h @@ -5,6 +5,7 @@ #include <linux/pm.h> #include <asm/fixmap.h> #include <asm/apicdef.h> +#include <asm/processor.h> #include <asm/system.h> #define Dprintk(x...) @@ -16,8 +17,20 @@ #define APIC_VERBOSE 1 #define APIC_DEBUG 2 +extern int enable_local_apic; extern int apic_verbosity; +static inline void lapic_disable(void) +{ + enable_local_apic = -1; + clear_bit(X86_FEATURE_APIC, boot_cpu_data.x86_capability); +} + +static inline void lapic_enable(void) +{ + enable_local_apic = 1; +} + /* * Define the default level of output to be very little * This can be turned up by using apic=verbose for more |