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authorVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>2005-09-03 15:56:31 -0700
committerLinus Torvalds <torvalds@evo.osdl.org>2005-09-05 00:06:10 -0700
commit911a62d42365076209e2c327e7688db296e35d62 (patch)
tree51e6d8525cd3547ea43129b5dd20339655674d57 /include
parent484b90c4b965d54037ff99b198d84cdf144f8a35 (diff)
[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')
-rw-r--r--include/asm-i386/apicdef.h1
-rw-r--r--include/asm-i386/mach-generic/mach_apic.h2
-rw-r--r--include/asm-i386/mpspec.h1
3 files changed, 4 insertions, 0 deletions
diff --git a/include/asm-i386/apicdef.h b/include/asm-i386/apicdef.h
index a96a8f48fbf..03185cef8e0 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 b13767a4e93..d9dc039da94 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 d9fafba075b..d84a9c326c2 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);