From b6e3590f8145c77b8fcef3247e2412335221412f Mon Sep 17 00:00:00 2001 From: Jeremy Fitzhardinge Date: Wed, 2 May 2007 19:27:12 +0200 Subject: [PATCH] x86: Allow percpu variables to be page-aligned Let's allow page-alignment in general for per-cpu data (wanted by Xen, and Ingo suggested KVM as well). Because larger alignments can use more room, we increase the max per-cpu memory to 64k rather than 32k: it's getting a little tight. Signed-off-by: Rusty Russell Signed-off-by: Jeremy Fitzhardinge Signed-off-by: Andi Kleen Acked-by: Ingo Molnar Cc: Andi Kleen Signed-off-by: Andrew Morton --- arch/sparc64/kernel/smp.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'arch/sparc64') diff --git a/arch/sparc64/kernel/smp.c b/arch/sparc64/kernel/smp.c index d4f0a70f484..1fac215252e 100644 --- a/arch/sparc64/kernel/smp.c +++ b/arch/sparc64/kernel/smp.c @@ -1343,11 +1343,11 @@ void __init setup_per_cpu_areas(void) /* Copy section for each CPU (we discard the original) */ goal = PERCPU_ENOUGH_ROOM; - __per_cpu_shift = 0; - for (size = 1UL; size < goal; size <<= 1UL) + __per_cpu_shift = PAGE_SHIFT; + for (size = PAGE_SIZE; size < goal; size <<= 1UL) __per_cpu_shift++; - ptr = alloc_bootmem(size * NR_CPUS); + ptr = alloc_bootmem_pages(size * NR_CPUS); __per_cpu_base = ptr - __per_cpu_start; -- cgit v1.2.3