From 07c7c4744400f93a7c52b32159c31d823e1747a5 Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Wed, 2 May 2007 19:27:04 +0200 Subject: [PATCH] x86-64: always use physical delivery mode on > 8 CPUs Remove clustered APIC mode. There's little point in the use of clustered APIC mode, broadcasting is limited to within the cluster only, and chipsets have bugs in this area as well. So default to physical APIC mode when the CPU count is large, and default to logical APIC mode when the CPU count is 8 or smaller. (this patch only removes the use of genapic_cluster and cleans up the resulting genapic.c file - removal of all remaining traces of clustered mode will be done by another patch.) Signed-off-by: Ingo Molnar Signed-off-by: Andi Kleen Cc: Suresh Siddha Cc: Andi Kleen Cc: "Li, Shaohua" Cc: "Eric W. Biederman" Signed-off-by: Andrew Morton --- include/asm-x86_64/genapic.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include/asm-x86_64') diff --git a/include/asm-x86_64/genapic.h b/include/asm-x86_64/genapic.h index a0e9a4b9348..d7e516ccbaa 100644 --- a/include/asm-x86_64/genapic.h +++ b/include/asm-x86_64/genapic.h @@ -29,7 +29,9 @@ struct genapic { unsigned int (*phys_pkg_id)(int index_msb); }; - extern struct genapic *genapic; +extern struct genapic apic_flat; +extern struct genapic apic_physflat; + #endif -- cgit v1.2.3