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From: Paolo Bonzini <pbonzini@redhat.com>
To: Lai Jiangshan <jiangshanlai@gmail.com>, linux-kernel@vger.kernel.org
Cc: kvm@vger.kernel.org, Lai Jiangshan <laijs@linux.alibaba.com>,
	Sean Christopherson <seanjc@google.com>,
	Vitaly Kuznetsov <vkuznets@redhat.com>,
	Wanpeng Li <wanpengli@tencent.com>,
	Jim Mattson <jmattson@google.com>, Joerg Roedel <joro@8bytes.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>
Subject: Re: [PATCH 12/12] KVM: X86: Walk shadow page starting with shadow_root_level
Date: Fri, 26 Nov 2021 13:58:01 +0100	[thread overview]
Message-ID: <c2977edf-8ab8-9751-677d-991b653823f1@redhat.com> (raw)
In-Reply-To: <20211124122055.64424-13-jiangshanlai@gmail.com>

On 11/24/21 13:20, Lai Jiangshan wrote:
> From: Lai Jiangshan <laijs@linux.alibaba.com>
> 
> Walking from the root page of the shadow page table should start with
> the level of the shadow page table: shadow_root_level.
> 
> Also change a small defect in audit_mappings(), it is believed
> that the current walking level is more valuable to print.
> 
> Signed-off-by: Lai Jiangshan <laijs@linux.alibaba.com>
> ---
>   arch/x86/kvm/mmu/mmu_audit.c | 5 ++---
>   1 file changed, 2 insertions(+), 3 deletions(-)
> 
> diff --git a/arch/x86/kvm/mmu/mmu_audit.c b/arch/x86/kvm/mmu/mmu_audit.c
> index 9e7dcf999f08..6bbbf85b3e46 100644
> --- a/arch/x86/kvm/mmu/mmu_audit.c
> +++ b/arch/x86/kvm/mmu/mmu_audit.c
> @@ -63,7 +63,7 @@ static void mmu_spte_walk(struct kvm_vcpu *vcpu, inspect_spte_fn fn)
>   		hpa_t root = vcpu->arch.mmu->root_hpa;
>   
>   		sp = to_shadow_page(root);
> -		__mmu_spte_walk(vcpu, sp, fn, vcpu->arch.mmu->root_level);
> +		__mmu_spte_walk(vcpu, sp, fn, vcpu->arch.mmu->shadow_root_level);
>   		return;
>   	}
>   
> @@ -119,8 +119,7 @@ static void audit_mappings(struct kvm_vcpu *vcpu, u64 *sptep, int level)
>   	hpa =  pfn << PAGE_SHIFT;
>   	if ((*sptep & PT64_BASE_ADDR_MASK) != hpa)
>   		audit_printk(vcpu->kvm, "levels %d pfn %llx hpa %llx "
> -			     "ent %llxn", vcpu->arch.mmu->root_level, pfn,
> -			     hpa, *sptep);
> +			     "ent %llxn", level, pfn, hpa, *sptep);
>   }
>   
>   static void inspect_spte_has_rmap(struct kvm *kvm, u64 *sptep)
> 

Queued all except patch 11, thanks.

Paolo


      reply	other threads:[~2021-11-26 13:00 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-24 12:20 [PATCH 00/12] KVM: X86: misc fixes and cleanup Lai Jiangshan
2021-11-24 12:20 ` [PATCH 01/12] KVM: X86: Fix when shadow_root_level=5 && guest root_level<4 Lai Jiangshan
2021-12-09  1:16   ` [PATCH 1/12] " Sean Christopherson
2021-12-09  1:21     ` Sean Christopherson
2021-12-10  9:34     ` Lai Jiangshan
2021-11-24 12:20 ` [PATCH 02/12] KVM: X86: Add parameter struct kvm_mmu *mmu into mmu->gva_to_gpa() Lai Jiangshan
2021-11-24 12:20 ` [PATCH 03/12] KVM: X86: Remove mmu->translate_gpa Lai Jiangshan
2021-11-24 12:20 ` [PATCH 04/12] KVM: X86: Use vcpu->arch.walk_mmu for kvm_mmu_invlpg() Lai Jiangshan
2021-11-24 12:20 ` [PATCH 05/12] KVM: X86: Change the type of a parameter of kvm_mmu_invalidate_gva() and mmu->invlpg() to gpa_t Lai Jiangshan
2021-11-24 12:20 ` [PATCH 06/12] KVM: X86: Add huge_page_level to __reset_rsvds_bits_mask_ept() Lai Jiangshan
2021-11-24 12:20 ` [PATCH 07/12] KVM: X86: Add parameter huge_page_level to kvm_init_shadow_ept_mmu() Lai Jiangshan
2021-11-24 12:20 ` [PATCH 08/12] KVM: VMX: Use ept_caps_to_lpage_level() in hardware_setup() Lai Jiangshan
2021-11-24 12:20 ` [PATCH 09/12] KVM: X86: Rename gpte_is_8_bytes to has_4_byte_gpte and invert the direction Lai Jiangshan
2021-11-24 12:20 ` [PATCH 10/12] KVM: X86: Remove mmu parameter from load_pdptrs() Lai Jiangshan
2021-11-24 12:20 ` [PATCH 11/12] KVM: X86: Check root_level only in fast_pgd_switch() Lai Jiangshan
2021-11-26 12:56   ` Paolo Bonzini
2021-11-24 12:20 ` [PATCH 12/12] KVM: X86: Walk shadow page starting with shadow_root_level Lai Jiangshan
2021-11-26 12:58   ` Paolo Bonzini [this message]

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