linux-kernel - [PATCH v3 26/31] KVM: MMU: set ad

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20210924163152.289027-27-pbonzini@redhat.com>
Date:   Fri, 24 Sep 2021 12:31:47 -0400
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Cc:     dmatlack@...gle.com, seanjc@...gle.com
Subject: [PATCH v3 26/31] KVM: MMU: set ad_disabled in TDP MMU role

Prepare for removing the ad_disabled argument of make_spte; instead it can
be found in the role of a struct kvm_mmu_page.  First of all, the TDP MMU
must set the role accurately.

Signed-off-by: Paolo Bonzini <pbonzini@...hat.com>
---
 arch/x86/kvm/mmu/tdp_mmu.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/kvm/mmu/tdp_mmu.c b/arch/x86/kvm/mmu/tdp_mmu.c
index 6de2c957edd6..1cdb5618bb76 100644
--- a/arch/x86/kvm/mmu/tdp_mmu.c
+++ b/arch/x86/kvm/mmu/tdp_mmu.c
@@ -167,6 +167,7 @@ static union kvm_mmu_page_role page_role_for_level(struct kvm_vcpu *vcpu,
 	role.direct = true;
 	role.gpte_is_8_bytes = true;
 	role.access = ACC_ALL;
+	role.ad_disabled = !shadow_accessed_mask;
 
 	return role;
 }
-- 
2.27.0