From: Ouyang Zhaowei (Charles) <ouyangzhaowei@huawei.com>
Date: Wed, 6 May 2015 01:47:04 +0000 (+0800)
Subject: x86/xen: don't reset vcpu_info on a cancelled suspend
X-Git-Tag: v3.2.77~57
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8b0969157ef3d3db0ba4541b5f4ec399f5fddccd;p=pandora-kernel.git

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: Ben Hutchings <ben@decadent.org.uk>
---

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