linux-kernel - Re: [PATCH v2 4/10] KVM: MMU: fix forgot to flush all vcpu's tlb

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Message-ID: <4C28719A.90406@redhat.com>
Date:	Mon, 28 Jun 2010 12:55:38 +0300
From:	Avi Kivity <avi@...hat.com>
To:	Xiao Guangrong <xiaoguangrong@...fujitsu.com>
CC:	Marcelo Tosatti <mtosatti@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>,
	KVM list <kvm@...r.kernel.org>
Subject: Re: [PATCH v2 4/10] KVM: MMU: fix forgot to flush all vcpu's tlb

On 06/25/2010 03:06 PM, Xiao Guangrong wrote:
> After remove a rmap, we should flush all vcpu's tlb
>
> Signed-off-by: Xiao Guangrong<xiaoguangrong@...fujitsu.com>
> ---
>   arch/x86/kvm/mmu.c |    2 ++
>   1 files changed, 2 insertions(+), 0 deletions(-)
>
> diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
> index 0412ba4..f151540 100644
> --- a/arch/x86/kvm/mmu.c
> +++ b/arch/x86/kvm/mmu.c
> @@ -1933,6 +1933,8 @@ static void mmu_set_spte(struct kvm_vcpu *vcpu, u64 *sptep,
>   			pgprintk("hfn old %lx new %lx\n",
>   				 spte_to_pfn(*sptep), pfn);
>   			rmap_remove(vcpu->kvm, sptep);
> +			__set_spte(sptep, shadow_trap_nonpresent_pte);
> +			kvm_flush_remote_tlbs(vcpu->kvm);
>   		} else
>   			was_rmapped = 1;
>   	}
>    

Good catch.


-- 
error compiling committee.c: too many arguments to function

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