From: Shuai Ruan <shuai.ruan@intel.com>
To: xen-devel@lists.xen.org
Cc: kevin.tian@intel.com, wei.liu2@citrix.com,
Ian.Campbell@citrix.com, stefano.stabellini@eu.citrix.com,
jun.nakajima@intel.com, andrew.cooper3@citrix.com,
ian.jackson@eu.citrix.com, eddie.dong@intel.com,
jbeulich@suse.com, keir@xen.org
Subject: [PATCH 6/6] x86/xsaves: detect xsaves/xgetbv1 in xen
Date: Fri, 17 Jul 2015 15:26:56 +0800 [thread overview]
Message-ID: <1437118016-25547-7-git-send-email-shuai.ruan@intel.com> (raw)
In-Reply-To: <1437118016-25547-1-git-send-email-shuai.ruan@intel.com>
As xsaves/xgetbv1 already support, so switch on.
Signed-off-by: Shuai Ruan <shuai.ruan@intel.com>
---
xen/arch/x86/xstate.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/xen/arch/x86/xstate.c b/xen/arch/x86/xstate.c
index 0eea146..a3f5c67 100644
--- a/xen/arch/x86/xstate.c
+++ b/xen/arch/x86/xstate.c
@@ -510,15 +510,15 @@ void xstate_init(bool_t bsp)
{
cpu_has_xsaveopt = !!(eax & XSTATE_FEATURE_XSAVEOPT);
cpu_has_xsavec = !!(eax & XSTATE_FEATURE_XSAVEC);
- /* XXX cpu_has_xgetbv1 = !!(eax & XSTATE_FEATURE_XGETBV1); */
- /* XXX cpu_has_xsaves = !!(eax & XSTATE_FEATURE_XSAVES); */
+ cpu_has_xgetbv1 = !!(eax & XSTATE_FEATURE_XGETBV1);
+ cpu_has_xsaves = !!(eax & XSTATE_FEATURE_XSAVES);
}
else
{
BUG_ON(!cpu_has_xsaveopt != !(eax & XSTATE_FEATURE_XSAVEOPT));
BUG_ON(!cpu_has_xsavec != !(eax & XSTATE_FEATURE_XSAVEC));
- /* XXX BUG_ON(!cpu_has_xgetbv1 != !(eax & XSTATE_FEATURE_XGETBV1)); */
- /* XXX BUG_ON(!cpu_has_xsaves != !(eax & XSTATE_FEATURE_XSAVES)); */
+ BUG_ON(!cpu_has_xgetbv1 != !(eax & XSTATE_FEATURE_XGETBV1));
+ BUG_ON(!cpu_has_xsaves != !(eax & XSTATE_FEATURE_XSAVES));
}
if ( cpu_has_xsaves )
--
1.9.1
next prev parent reply other threads:[~2015-07-17 7:26 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-17 7:26 [PATCH v2 0/6] add xsaves/xrstors support Shuai Ruan
2015-07-17 7:26 ` [PATCH 1/6] x86/xsaves: enable xsaves/xrstors for pv guest Shuai Ruan
2015-07-17 16:21 ` Konrad Rzeszutek Wilk
2015-07-21 9:43 ` Ruan, Shuai
2015-07-21 13:12 ` Konrad Rzeszutek Wilk
2015-07-17 7:26 ` [PATCH 2/6] x86/xsaves: enable xsaves/xrstors in xen Shuai Ruan
2015-07-17 7:26 ` [PATCH 3/6] x86/xsaves: enable xsaves/xrstors for hvm guest Shuai Ruan
2015-07-17 7:26 ` [PATCH 4/6] libxc: expose xsaves/xgetbv1/xsavec to " Shuai Ruan
2015-07-17 7:47 ` Jan Beulich
2015-07-17 8:10 ` Ruan, Shuai
2015-07-17 10:47 ` Jan Beulich
2015-07-21 9:33 ` Ruan, Shuai
2015-07-21 9:47 ` Jan Beulich
2015-07-17 7:26 ` [PATCH 5/6] x86/xsaves: support compact format for hvm save/restore Shuai Ruan
2015-07-17 7:26 ` Shuai Ruan [this message]
2015-07-17 20:15 ` [PATCH v2 0/6] add xsaves/xrstors support Andrew Cooper
2015-07-21 9:25 ` Ruan, Shuai
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