From: Wei Liu <wei.liu2@citrix.com>
To: Shuai Ruan <shuai.ruan@linux.intel.com>
Cc: xen-devel <xen-devel@lists.xenproject.org>,
Wei Liu <wei.liu2@citrix.com>, Jan Beulich <JBeulich@suse.com>,
Andrew Cooper <andrew.cooper3@citrix.com>
Subject: Re: [PATCH] x86/xstate: don't clobber or leak state when using XSAVES
Date: Fri, 29 Apr 2016 10:13:42 +0100 [thread overview]
Message-ID: <20160429091342.GA12693@citrix.com> (raw)
In-Reply-To: <20160429012139.GA4359@shuai.ruan@linux.intel.com>
On Fri, Apr 29, 2016 at 09:21:39AM +0800, Shuai Ruan wrote:
> On Mon, Apr 25, 2016 at 01:07:54AM -0600, Jan Beulich wrote:
> > Commit 4d27280572 ("x86/xsaves: fix overwriting between non-lazy/lazy
> > xsaves") switched to always saving full state when using compacted
> > format (which is the only one XSAVES allows). It didn't, however, also
> > adjust the restore side: In order to save full state, we also need to
> > make sure we always load full state, or else the subject vCPU's state
> > would get clobbered by that of the vCPU which happened to last have in
> > use the respective component(s).
> >
> > Signed-off-by: Jan Beulich <jbeulich@suse.com>
> This looks good to me.
>
Can we take this as an ack or a review tag?
Wei.
> Thanks
>
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next prev parent reply other threads:[~2016-04-29 9:13 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-25 7:07 [PATCH] x86/xstate: don't clobber or leak state when using XSAVES Jan Beulich
2016-04-25 11:39 ` Wei Liu
2016-04-26 9:25 ` Andrew Cooper
2016-04-29 1:21 ` Shuai Ruan
[not found] ` <20160429012139.GA4359@shuai.ruan@linux.intel.com>
2016-04-29 9:13 ` Wei Liu [this message]
2016-05-05 1:20 ` Shuai Ruan
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