From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Jan Beulich" <JBeulich@suse.com>
Subject: Re: [PATCH RFC V6 5/5] xen: Handle resumed instruction
 based on previous mem_event reply
Date: Tue, 12 Aug 2014 16:20:42 +0100
Message-ID: <53EA4CEA020000780002BB82@mail.emea.novell.com>
References: <1407769686-7918-1-git-send-email-rcojocaru@bitdefender.com>
	<1407769686-7918-5-git-send-email-rcojocaru@bitdefender.com>
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To: Razvan Cojocaru <rcojocaru@bitdefender.com>
Cc: kevin.tian@intel.com, ian.campbell@citrix.com, stefano.stabellini@eu.citrix.com, andrew.cooper3@citrix.com, eddie.dong@intel.com, xen-devel@lists.xen.org, jun.nakajima@intel.com, ian.jackson@eu.citrix.com
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>>> On 11.08.14 at 17:08, <rcojocaru@bitdefender.com> wrote:
> --- a/xen/arch/x86/hvm/vmx/vmx.c
> +++ b/xen/arch/x86/hvm/vmx/vmx.c
> @@ -1699,6 +1699,18 @@ static void vmx_enable_msr_exit_interception(struct domain *d)
>              vmx_enable_intercept_for_msr(v, msrs[i], MSR_TYPE_W);
>  }
>  
> +static bool_t vmx_exited_by_nested_pagefault(void)
> +{
> +    unsigned long exit_qualification;
> +
> +    __vmread(EXIT_QUALIFICATION, &exit_qualification);
> +
> +    if ( (exit_qualification & EPT_GLA_FAULT) == 0 )
> +        return 0;
> +
> +    return 1;
> +}

As (I think) said on the previous version already - this would apparently
benefit from being based on Tamas's recent work (slated to go in once
the series got suitably acked).

Jan