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 --- kernel/module.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'kernel/module.c') diff --git a/kernel/module.c b/kernel/module.c index cf49ca25fcce..4dc4a257545c 100644 --- a/kernel/module.c +++ b/kernel/module.c @@ -346,10 +346,10 @@ static void *percpu_modalloc(unsigned long size, unsigned long align, unsigned int i; void *ptr; - if (align > SMP_CACHE_BYTES) { - printk(KERN_WARNING "%s: per-cpu alignment %li > %i\n", - name, align, SMP_CACHE_BYTES); - align = SMP_CACHE_BYTES; + if (align > PAGE_SIZE) { + printk(KERN_WARNING "%s: per-cpu alignment %li > %li\n", + name, align, PAGE_SIZE); + align = PAGE_SIZE; } ptr = __per_cpu_start; -- cgit v1.2.3-59-g8ed1b