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

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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