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| author | Natalie Protasevich <Natalie.Protasevich@unisys.com> | 2005-06-23 00:08:22 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-06-23 09:45:09 -0700 |
| commit | ca05fea6db5259c6d62e517c41d448a4249175f4 (patch) | |
| tree | fae2369b5a38a7b01be366129b5dc3105acfacf6 /arch/i386/kernel/mpparse.c | |
| parent | 7c1def1652c6c1a95eafca2991baace34afaed0f (diff) | |
| download | op-kernel-dev-ca05fea6db5259c6d62e517c41d448a4249175f4.zip op-kernel-dev-ca05fea6db5259c6d62e517c41d448a4249175f4.tar.gz | |
[PATCH] Do not enforce unique IO_APIC_ID check for xAPIC systems (i386)
This patch is per Andi's request to remove NO_IOAPIC_CHECK from genapic and
use heuristics to prevent unique I/O APIC ID check for systems that don't
need it. The patch disables unique I/O APIC ID check for Xeon-based and
other platforms that don't use serial APIC bus for interrupt delivery.
Andi stated that AMD systems don't need unique IO_APIC_IDs either.
Signed-off-by: Natalie Protasevich <Natalie.Protasevich@unisys.com>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/i386/kernel/mpparse.c')
| -rw-r--r-- | arch/i386/kernel/mpparse.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/i386/kernel/mpparse.c b/arch/i386/kernel/mpparse.c index 1347ab4..0a06105 100644 --- a/arch/i386/kernel/mpparse.c +++ b/arch/i386/kernel/mpparse.c @@ -914,7 +914,10 @@ void __init mp_register_ioapic ( mp_ioapics[idx].mpc_apicaddr = address; set_fixmap_nocache(FIX_IO_APIC_BASE_0 + idx, address); - mp_ioapics[idx].mpc_apicid = io_apic_get_unique_id(idx, id); + if ((boot_cpu_data.x86_vendor == X86_VENDOR_INTEL) && (boot_cpu_data.x86 < 15)) + mp_ioapics[idx].mpc_apicid = io_apic_get_unique_id(idx, id); + else + mp_ioapics[idx].mpc_apicid = id; mp_ioapics[idx].mpc_apicver = io_apic_get_version(idx); /* |
