linux-kernel - Re: [PATCH 1/4] KVM: MMU: fix permission

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Message-ID: <570526B6.4040909@linux.intel.com>
Date:	Wed, 6 Apr 2016 23:09:42 +0800
From:	Xiao Guangrong <guangrong.xiao@...ux.intel.com>
To:	Paolo Bonzini <pbonzini@...hat.com>
Cc:	gleb@...nel.org, mtosatti@...hat.com, kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/4] KVM: MMU: fix permission_fault()



On 04/06/2016 04:56 PM, Paolo Bonzini wrote:
>
>
> On 25/03/2016 14:19, Xiao Guangrong wrote:
>> @@ -193,11 +193,11 @@ static inline u8 permission_fault(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
>>   			((pte_access & PT_USER_MASK) << (PFERR_RSVD_BIT - PT_USER_SHIFT));
>
> One more tweak is needed in the line above; pfec - 1 must become pfec &
> ~1, because you've removed the
>
> 	pfec |= PFERR_PRESENT_MASK;
>
> line.  Applied with this change.

Yes, indeed. Thanks for your fix.