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| author |   Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> | 2005-09-03 15:56:31 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@evo.osdl.org> | 2005-09-05 00:06:10 -0700 |
| commit | 911a62d42365076209e2c327e7688db296e35d62 (patch) | |
| tree | 51e6d8525cd3547ea43129b5dd20339655674d57 /include/asm-i386 | |
| parent | [PATCH] kdump: Save parameter segment in protected mode (x86) (diff) | |
| download | linux-dev-911a62d42365076209e2c327e7688db296e35d62.tar.xz linux-dev-911a62d42365076209e2c327e7688db296e35d62.zip | |
[PATCH] x86: sutomatically enable bigsmp when we have more than 8 CPUs
i386 generic subarchitecture requires explicit dmi strings or command line
to enable bigsmp mode. The patch below removes that restriction, and uses
bigsmp as soon as it finds more than 8 logical CPUs, Intel processors and
xAPIC support.
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-i386')
| -rw-r--r-- | include/asm-i386/apicdef.h | 1 | ||||
| -rw-r--r-- | include/asm-i386/mach-generic/mach_apic.h | 2 | ||||
| -rw-r--r-- | include/asm-i386/mpspec.h | 1 |
3 files changed, 4 insertions, 0 deletions
diff --git a/include/asm-i386/apicdef.h b/include/asm-i386/apicdef.h index a96a8f48fbfc..03185cef8e0a 100644 --- a/include/asm-i386/apicdef.h +++ b/include/asm-i386/apicdef.h @@ -16,6 +16,7 @@ #define GET_APIC_VERSION(x) ((x)&0xFF) #define GET_APIC_MAXLVT(x) (((x)>>16)&0xFF) #define APIC_INTEGRATED(x) ((x)&0xF0) +#define APIC_XAPIC(x) ((x) >= 0x14) #define APIC_TASKPRI 0x80 #define APIC_TPRI_MASK 0xFF #define APIC_ARBPRI 0x90 diff --git a/include/asm-i386/mach-generic/mach_apic.h b/include/asm-i386/mach-generic/mach_apic.h index b13767a4e934..d9dc039da94a 100644 --- a/include/asm-i386/mach-generic/mach_apic.h +++ b/include/asm-i386/mach-generic/mach_apic.h @@ -28,4 +28,6 @@ #define enable_apic_mode (genapic->enable_apic_mode) #define phys_pkg_id (genapic->phys_pkg_id) +extern void generic_bigsmp_probe(void); + #endif /* __ASM_MACH_APIC_H */ diff --git a/include/asm-i386/mpspec.h b/include/asm-i386/mpspec.h index d9fafba075bc..d84a9c326c22 100644 --- a/include/asm-i386/mpspec.h +++ b/include/asm-i386/mpspec.h @@ -11,6 +11,7 @@ extern int mp_bus_id_to_local [MAX_MP_BUSSES]; extern int quad_local_to_mp_bus_id [NR_CPUS/4][4]; extern int mp_bus_id_to_pci_bus [MAX_MP_BUSSES]; +extern unsigned int def_to_bigsmp; extern unsigned int boot_cpu_physical_apicid; extern int smp_found_config; extern void find_smp_config (void); |