linux-kernel - Re: [PATCH 3/9] KVM: define kvm_hwpoison

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Date:	Thu, 2 Aug 2012 09:52:16 -0300
From:	Marcelo Tosatti <mtosatti@...hat.com>
To:	Xiao Guangrong <xiaoguangrong@...ux.vnet.ibm.com>
Cc:	Avi Kivity <avi@...hat.com>, LKML <linux-kernel@...r.kernel.org>,
	KVM <kvm@...r.kernel.org>
Subject: Re: [PATCH 3/9] KVM: define kvm_hwpoison_pfn statically

On Sun, Jul 29, 2012 at 04:13:41PM +0800, Xiao Guangrong wrote:
> Then, get_hwpoison_pfn and is_hwpoison_pfn can be removed
> 
> Signed-off-by: Xiao Guangrong <xiaoguangrong@...ux.vnet.ibm.com>
> ---
>  arch/x86/kvm/mmu.c       |    2 +-
>  include/linux/kvm_host.h |    4 ++--
>  virt/kvm/kvm_main.c      |   13 +------------
>  3 files changed, 4 insertions(+), 15 deletions(-)
> 
> diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
> index 19bac91..320a781 100644
> --- a/arch/x86/kvm/mmu.c
> +++ b/arch/x86/kvm/mmu.c
> @@ -2651,7 +2651,7 @@ static void kvm_send_hwpoison_signal(unsigned long address, struct task_struct *
>  static int kvm_handle_bad_page(struct kvm_vcpu *vcpu, gfn_t gfn, pfn_t pfn)
>  {
>  	kvm_release_pfn_clean(pfn);
> -	if (is_hwpoison_pfn(pfn)) {
> +	if (pfn == kvm_hwpoison_pfn) {
>  		kvm_send_hwpoison_signal(gfn_to_hva(vcpu->kvm, gfn), current);
>  		return 0;
>  	}
> diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
> index 7cd6871..4de56cd 100644
> --- a/include/linux/kvm_host.h
> +++ b/include/linux/kvm_host.h
> @@ -48,7 +48,8 @@
>  #define KVM_MAX_MMIO_FRAGMENTS \
>  	(KVM_MMIO_SIZE / KVM_USER_MMIO_SIZE + KVM_EXTRA_MMIO_FRAGMENTS)
> 
> -#define kvm_fault_pfn	(-EFAULT)
> +#define kvm_fault_pfn		(-EFAULT)
> +#define kvm_hwpoison_pfn	(-EHWPOISON)

Same here as kvm_fault_pfn.

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