linux-kernel - [PATCH 33/35] kvm, x86: temporary disable record_steal

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: <e88ad8b8a7c2e9b3073b7ad21af127770969e577.1602093760.git.yuleixzhang@tencent.com>
Date:   Thu,  8 Oct 2020 15:54:23 +0800
From:   yulei.kernel@...il.com
To:     akpm@...ux-foundation.org, naoya.horiguchi@....com,
        viro@...iv.linux.org.uk, pbonzini@...hat.com
Cc:     linux-fsdevel@...r.kernel.org, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org, xiaoguangrong.eric@...il.com,
        kernellwp@...il.com, lihaiwei.kernel@...il.com,
        Yulei Zhang <yuleixzhang@...cent.com>
Subject: [PATCH 33/35] kvm, x86: temporary disable record_steal_time for dmem

From: Yulei Zhang <yuleixzhang@...cent.com>

Temporarily disable record_steal_time when entering
the guest for dmem.

Signed-off-by: Yulei Zhang <yuleixzhang@...cent.com>
---
 arch/x86/kvm/x86.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 1994602a0851..409b5a68aa60 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -2789,6 +2789,7 @@ static void kvm_vcpu_flush_tlb_guest(struct kvm_vcpu *vcpu)
 
 static void record_steal_time(struct kvm_vcpu *vcpu)
 {
+#if 0
 	struct kvm_host_map map;
 	struct kvm_steal_time *st;
 
@@ -2830,6 +2831,7 @@ static void record_steal_time(struct kvm_vcpu *vcpu)
 	st->version += 1;
 
 	kvm_unmap_gfn(vcpu, &map, &vcpu->arch.st.cache, true, false);
+#endif
 }
 
 int kvm_set_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
-- 
2.28.0