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| author | Ouyang Zhaowei (Charles) <ouyangzhaowei@huawei.com> | 2015-05-06 09:47:04 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-01-31 11:28:53 -0800 |
| commit | 7d391345b037f3834c851906ba05cc2fb5e266dc (patch) | |
| tree | 18a5e1c750e658b7d9071689a3cc90ca0b2aff4b /arch/x86/xen/suspend.c | |
| parent | e4a46f02b1d0eaadea4e6b00e29922cd00d6de53 (diff) | |
| download | blackbird-op-linux-7d391345b037f3834c851906ba05cc2fb5e266dc.tar.gz blackbird-op-linux-7d391345b037f3834c851906ba05cc2fb5e266dc.zip | |
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/xen/suspend.c')
| -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 df0c40559583..7f664c416faf 100644 --- a/arch/x86/xen/suspend.c +++ b/arch/x86/xen/suspend.c @@ -34,7 +34,8 @@ 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)) { |
