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authorJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>2010-11-29 14:16:53 -0800
committerJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>2010-11-29 14:16:53 -0800
commit31e323cca9d5c8afd372976c35a5d46192f540d1 (patch)
tree2af67d38071b9e0767743e020a6833e8e5fecc93 /arch
parent3561d43fd289f590fdae672e5eb831b8d5cf0bf6 (diff)
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xen: don't bother to stop other cpus on shutdown/reboot
Xen will shoot all the VCPUs when we do a shutdown hypercall, so there's no need to do it manually. In any case it will fail because all the IPI irqs have been pulled down by this point, so the cross-CPU calls will simply hang forever. Until change 76fac077db6b34e2c6383a7b4f3f4f7b7d06d8ce the function calls were not synchronously waited for, so this wasn't apparent. However after that change the calls became synchronous leading to a hang on shutdown on multi-VCPU guests. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: Stable Kernel <stable@kernel.org> Cc: Alok Kataria <akataria@vmware.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/xen/enlighten.c4
1 files changed, 0 insertions, 4 deletions
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index 235c0f4d386..4a5973abefc 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -1016,10 +1016,6 @@ static void xen_reboot(int reason)
{
struct sched_shutdown r = { .reason = reason };
-#ifdef CONFIG_SMP
- stop_other_cpus();
-#endif
-
if (HYPERVISOR_sched_op(SCHEDOP_shutdown, &r))
BUG();
}