From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Cooper Subject: Re: Intermittent fatal page fault with XEN 4.3.1 (Centos 6.3 DOM0 with linux kernel 3.10.16.) Date: Thu, 7 Nov 2013 16:06:47 +0000 Message-ID: <527BBA97.4040900@citrix.com> References: <5278D0BB02000078000FF6E4@nat28.tlf.novell.com> <527912E9.3010304@xen.org> <5E2B3362-4D93-4FEF-987A-E477B0DCEE51@mcafee.com> <527A5BB50200007800100255@nat28.tlf.novell.com> <4E8EC677-8D22-4672-9C5C-12DD094107D2@McAfee.com> <1383754737.26213.136.camel@kazak.uk.xensource.com> <527A7454.9060309@citrix.com> <1383757590.26213.139.camel@kazak.uk.xensource.com> <527A7769.8070700@citrix.com> <527B67280200007800100817@nat28.tlf.novell.com> <1383816652.26213.143.camel@kazak.uk.xensource.com> <24B7017F-1AC7-4900-93EB-F54C11002491@McAfee.com> <527BB7AA.4080801@citrix.com> <527BC7420200007800100CD3@nat28.tlf.novell.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail6.bemta3.messagelabs.com ([195.245.230.39]) by lists.xen.org with esmtp (Exim 4.72) (envelope-from ) id 1VeS6d-0005MR-M6 for xen-devel@lists.xenproject.org; Thu, 07 Nov 2013 16:06:51 +0000 In-Reply-To: <527BC7420200007800100CD3@nat28.tlf.novell.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Jan Beulich Cc: lars.kurth.xen@gmail.com, xen-devel@lists.xenproject.org, lars.kurth@xen.org, Ian.Campbell@citrix.com, Jeff_Zimmerman@McAfee.com List-Id: xen-devel@lists.xenproject.org On 07/11/13 16:00, Jan Beulich wrote: >>>> On 07.11.13 at 16:54, Andrew Cooper wrote: >> Can you try the following patch and see whether it helps? >> >> diff --git a/xen/include/asm-x86/hvm/hvm.h b/xen/include/asm-x86/hvm/hvm.h >> index c9afb56..7b1a349 100644 >> --- a/xen/include/asm-x86/hvm/hvm.h >> +++ b/xen/include/asm-x86/hvm/hvm.h >> @@ -359,7 +359,7 @@ static inline int hvm_event_pending(struct vcpu *v) >> /* These bits in CR4 cannot be set by the guest. */ >> #define HVM_CR4_GUEST_RESERVED_BITS(_v) \ >> (~((unsigned long) \ >> - (X86_CR4_VME | X86_CR4_PVI | X86_CR4_TSD | \ >> + (X86_CR4_PVI | X86_CR4_TSD | \ > Are you mixing up VME and VMXE perhaps? > > Jan > I am indeed. Apologies for the noise, but I am still quite concerned I shall attempt to repro this on a XenRT machine Jeff: What system is this on (so I can pick a similar server to try with)? ~Andrew