linux-kernel - Re: [PATCH 2/7] KVM: x86/mmu: Replace hardcoded value 0 for the initial value for SPTE

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Date: Wed, 15 May 2024 19:33:13 +0200
From: Paolo Bonzini <pbonzini@...hat.com>
To: Isaku Yamahata <isaku.yamahata@...el.com>
Cc: linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
 Sean Christopherson <seanjc@...gle.com>, Xiaoyao Li <xiaoyao.li@...el.com>,
 Binbin Wu <binbin.wu@...ux.intel.com>, rick.p.edgecombe@...el.com
Subject: Re: [PATCH 2/7] KVM: x86/mmu: Replace hardcoded value 0 for the
 initial value for SPTE

On 5/15/24 19:32, Isaku Yamahata wrote:
> Paolo, how do you want me to proceed? I can send a updated patch or you can
> directly fix the patch in kvm-coco-queue.  I'm fine with either way.

I'll fix it, thanks!

Paolo

> From 7910130c0a3f2c5d814d6f14d663b4b692a2c7e4 Mon Sep 17 00:00:00 2001
> Message-ID:<7910130c0a3f2c5d814d6f14d663b4b692a2c7e4.1715793643.git.isaku.yamahata@...el.com>
> From: Isaku Yamahata<isaku.yamahata@...el.com>
> Date: Wed, 15 May 2024 10:19:08 -0700
> Subject: [PATCH] fixup! KVM: x86/mmu: Replace hardcoded value 0 for the
>   initial value for SPTE
> 
> ---
>   arch/x86/kvm/mmu/tdp_mmu.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/x86/kvm/mmu/tdp_mmu.c b/arch/x86/kvm/mmu/tdp_mmu.c
> index 1259dd63defc..36539c1b36cd 100644
> --- a/arch/x86/kvm/mmu/tdp_mmu.c
> +++ b/arch/x86/kvm/mmu/tdp_mmu.c
> @@ -626,7 +626,7 @@ static inline int tdp_mmu_zap_spte_atomic(struct kvm *kvm,
>   	 * SPTEs.
>   	 */
>   	handle_changed_spte(kvm, iter->as_id, iter->gfn, iter->old_spte,
> -			    0, iter->level, true);
> +			    SHADOW_NONPRESENT_VALUE, iter->level, true);
>   
>   	return 0;
>   }
> 
> base-commit: 698ca1e403579ca00e16a5b28ae4d576d9f1b20e