From: Marcelo Tosatti <mtosatti@redhat.com>
To: Huang Ying <ying.huang@intel.com>
Cc: Avi Kivity <avi@redhat.com>, Andi Kleen <andi@firstfloor.org>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>
Subject: Re: [PATCH] Ignore SRAO MCE if another MCE is being processed
Date: Wed, 28 Apr 2010 13:28:22 -0300 [thread overview]
Message-ID: <20100428162822.GB18168@amt.cnet> (raw)
In-Reply-To: <1272352249.24125.19.camel@yhuang-dev.sh.intel.com>
On Tue, Apr 27, 2010 at 03:10:49PM +0800, Huang Ying wrote:
> In common cases, guest SRAO MCE will cause corresponding poisoned page
> be un-mapped in host and SIGBUS be sent to QEMU-KVM, then QEMU-KVM
> will relay the MCE to guest OS.
>
> But it is possible that the poisoned page is accessed in guest after
> un-mapped in host and before MCE is relayed to guest OS. So that, the
> SRAR SIGBUS is sent to QEMU-KVM before the SRAO SIGBUS, and if
> QEMU-KVM relays them to guest OS one by one, guest system may reset,
> because the SRAO MCE may be triggered while the SRAR MCE is being
> processed. In fact, the SRAO MCE can be ignored in this situation, so
> that the guest system is given opportunity to survive.
>
> Signed-off-by: Huang Ying <ying.huang@intel.com>
Applied, thanks.
prev parent reply other threads:[~2010-04-28 16:28 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-27 7:10 [PATCH] Ignore SRAO MCE if another MCE is being processed Huang Ying
2010-04-27 16:12 ` Marcelo Tosatti
2010-04-28 6:08 ` Huang Ying
2010-04-28 16:33 ` Avi Kivity
2010-04-29 1:03 ` Huang Ying
2010-04-28 16:28 ` Marcelo Tosatti [this message]
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