xen: don't bother to stop other cpus on shutdown/reboot
commit4f5c2456ac7a527e1b3a90beb37309556a47b3ac
authorJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Mon, 29 Nov 2010 22:16:53 +0000 (29 14:16 -0800)
committerGreg Kroah-Hartman <gregkh@suse.de>
Thu, 9 Dec 2010 21:32:37 +0000 (9 13:32 -0800)
tree41cad9d222d6ba5d1bdf4d3d45583284e7745b31
parente1dff96fef0489b0899299bcd5e3e5701d995d2e
xen: don't bother to stop other cpus on shutdown/reboot

commit 31e323cca9d5c8afd372976c35a5d46192f540d1 upstream.

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: Alok Kataria <akataria@vmware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
arch/x86/xen/enlighten.c