diff options
| author | Ouyang Zhaowei (Charles) <ouyangzhaowei@huawei.com> | 2015-05-06 09:47:04 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-01-31 11:23:30 -0800 |
| commit | c12a3752a390994ad5e3b987f123ffe24143ad48 (patch) | |
| tree | 9d2ed00b3cb0757a01476f2bdc0fb1cd3da30022 /arch/x86 | |
| parent | 702d87e2ff77d75c8ba8783510b71c68eef644f3 (diff) | |
x86/xen: don't reset vcpu_info on a cancelled suspend
commit 6a1f513776b78c994045287073e55bae44ed9f8c 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: Charles Ouyang <ouyangzhaowei@huawei.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/xen/suspend.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/xen/suspend.c b/arch/x86/xen/suspend.c index 53b4c0811f4f..6d3415144dab 100644 --- a/arch/x86/xen/suspend.c +++ b/arch/x86/xen/suspend.c @@ -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)) { |