Commit 6654e621 authored by Ouyang Zhaowei (Charles)'s avatar Ouyang Zhaowei (Charles) Committed by Luis Henriques

x86/xen: don't reset vcpu_info on a cancelled suspend

commit 6a1f5137 upstream.

On a cancelled suspend the vcpu_info location does not change (it's
still in the per-cpu area registered by xen_vcpu_setup()).  So do not
call xen_hvm_init_shared_info() which would make the kernel think its
back in the shared info.  With the wrong vcpu_info, events cannot be
received and the domain will hang after a cancelled suspend.
Signed-off-by: default avatarCharles Ouyang <ouyangzhaowei@huawei.com>
Reviewed-by: default avatarBoris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: default avatarDavid Vrabel <david.vrabel@citrix.com>
Signed-off-by: default avatarLuis Henriques <luis.henriques@canonical.com>
parent be3f6169
......@@ -32,7 +32,8 @@ static void xen_hvm_post_suspend(int suspend_cancelled)
{
#ifdef CONFIG_XEN_PVHVM
int cpu;
xen_hvm_init_shared_info();
if (!suspend_cancelled)
xen_hvm_init_shared_info();
xen_callback_vector();
xen_unplug_emulated_devices();
if (xen_feature(XENFEAT_hvm_safe_pvclock)) {
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment