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authorAndi Kleen <ak@suse.de>2005-09-12 18:49:24 +0200
committerLinus Torvalds <torvalds@g5.osdl.org>2005-09-12 10:49:56 -0700
commit3f098c2605bdf50176b26f4fa724e9b9c99e5242 (patch)
treed4632bc555c52afed6ae4c0444659dca49e3e406 /include/asm-x86_64
parentb91691164be174b780f5c1bb145a7ab5d33fce2f (diff)
[PATCH] x86-64: Support dualcore and 8 socket systems in k8 fallback node parsing
In particular on systems where the local APIC space and node space is very different from the Linux CPU number space. Previously the older NUMA setup code directly parsing the K8 northbridge registers had some issues on 8 socket or dual core systems. This patch fixes them. This is mainly done by fixing some confusion between Linux CPU numbers and local APIC ids. We now pass the local APIC IDs to later code, which avoids mismatches. Also add some heuristics to detect cases where the Hypertransport nodeids and the local APIC IDs don't match, but are shifted by a constant offset. This is still all quite hackish, hopefully BIOS writers fill in correct SRATs instead. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-x86_64')
-rw-r--r--include/asm-x86_64/apicdef.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/asm-x86_64/apicdef.h b/include/asm-x86_64/apicdef.h
index 9388062c4f6e..fb1c99ac669f 100644
--- a/include/asm-x86_64/apicdef.h
+++ b/include/asm-x86_64/apicdef.h
@@ -113,6 +113,7 @@
#define APIC_BASE (fix_to_virt(FIX_APIC_BASE))
#define MAX_IO_APICS 128
+#define MAX_LOCAL_APIC 256
/*
* All x86-64 systems are xAPIC compatible.