From: Suresh Siddha Date: Wed, 14 Jan 2009 02:43:03 +0000 (-0800) Subject: x86: fix broken flush_tlb_others_ipi() X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=a4a0acf8e17e3d08e28b721ceceb898fbc959ceb;p=deliverable%2Flinux.git x86: fix broken flush_tlb_others_ipi() This commit broke flush_tlb_others_ipi() causing boot hangs on a 16 logical cpu system: > commit 4595f9620cda8a1e973588e743cf5f8436dd20c6 > Author: Rusty Russell > Date: Sat Jan 10 21:58:09 2009 -0800 > > x86: change flush_tlb_others to take a const struct cpumask This change resulted in sending the invalidate tlb vector to the sender itself causing the hang. flush_tlb_others_ipi() should exclude the sender itself from the destination list. Signed-off-by: Suresh Siddha Signed-off-by: Ingo Molnar --- diff --git a/arch/x86/kernel/tlb_64.c b/arch/x86/kernel/tlb_64.c index 7a3f9891302d..54ee2ecb5e26 100644 --- a/arch/x86/kernel/tlb_64.c +++ b/arch/x86/kernel/tlb_64.c @@ -188,7 +188,7 @@ static void flush_tlb_others_ipi(const struct cpumask *cpumask, * We have to send the IPI only to * CPUs affected. */ - send_IPI_mask(cpumask, INVALIDATE_TLB_VECTOR_START + sender); + send_IPI_mask(f->flush_cpumask, INVALIDATE_TLB_VECTOR_START + sender); while (!cpumask_empty(to_cpumask(f->flush_cpumask))) cpu_relax();