From: Paolo Bonzini <pbonzini@redhat.com>
To: Xiao Guangrong <guangrong.xiao@linux.intel.com>
Cc: gleb@kernel.org, mtosatti@redhat.com, kvm@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/4] KVM: MMU: fix permission_fault()
Date: Wed, 6 Apr 2016 10:56:45 +0200 [thread overview]
Message-ID: <5704CF4D.9080905@redhat.com> (raw)
In-Reply-To: <1458911978-19430-1-git-send-email-guangrong.xiao@linux.intel.com>
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.
Paolo
>
> pkru_bits &= mmu->pkru_mask >> offset;
> - pfec |= -pkru_bits & PFERR_PK_MASK;
> + errcode |= -pkru_bits & PFERR_PK_MASK;
> fault |= (pkru_bits != 0);
> }
>
> - return -(uint32_t)fault & pfec;
> + return -(uint32_t)fault & errcode;
> }
>
> void kvm_mmu_invalidate_zap_all_pages(struct kvm *kvm);
next prev parent reply other threads:[~2016-04-06 8:56 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-25 13:19 [PATCH 1/4] KVM: MMU: fix permission_fault() Xiao Guangrong
2016-03-25 13:19 ` [PATCH 2/4] KVM: MMU: simplify the logic of __mmu_unsync_walk() Xiao Guangrong
2016-03-25 13:19 ` [PATCH 3/4] KVM: MMU: reduce the size of mmu_page_path Xiao Guangrong
2016-03-25 13:45 ` Paolo Bonzini
2016-03-25 13:48 ` Xiao Guangrong
2016-03-25 13:56 ` Paolo Bonzini
2016-03-25 14:07 ` Xiao Guangrong
2016-03-25 14:22 ` Paolo Bonzini
2016-03-25 13:19 ` [PATCH 4/4] KVM: MMU: skip obsolete sp in for_each_gfn_*() Xiao Guangrong
2016-03-29 9:44 ` Paolo Bonzini
2016-03-25 13:35 ` [PATCH 1/4] KVM: MMU: fix permission_fault() Paolo Bonzini
2016-03-25 13:41 ` Xiao Guangrong
2016-03-25 13:50 ` Paolo Bonzini
2016-03-25 14:21 ` Paolo Bonzini
2016-03-29 17:43 ` Xiao Guangrong
2016-03-29 20:09 ` Paolo Bonzini
2016-03-30 1:56 ` Xiao Guangrong
2016-03-30 6:36 ` Paolo Bonzini
2016-03-30 6:39 ` Xiao Guangrong
2016-04-06 3:27 ` Xiao Guangrong
2016-04-06 8:17 ` Paolo Bonzini
2016-04-06 8:56 ` Paolo Bonzini [this message]
2016-04-06 15:09 ` Xiao Guangrong
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