linux-kernel - [PATCH V3 9/10] KVM/MMU: Use tlb range flush in the kvm_age

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Message-Id: <20190222150637.2337-10-Tianyu.Lan@microsoft.com>
Date:   Fri, 22 Feb 2019 23:06:36 +0800
From:   lantianyu1986@...il.com
To:     unlisted-recipients:; (no To-header on input)
Cc:     Lan Tianyu <Tianyu.Lan@...rosoft.com>, pbonzini@...hat.com,
        rkrcmar@...hat.com, tglx@...utronix.de, mingo@...hat.com,
        bp@...en8.de, hpa@...or.com, x86@...nel.org, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org, michael.h.kelley@...rosoft.com,
        kys@...rosoft.com, vkuznets@...hat.com, linux@...linux.org.uk
Subject: [PATCH V3 9/10] KVM/MMU: Use tlb range flush in the kvm_age_hva()

From: Lan Tianyu <Tianyu.Lan@...rosoft.com>

This patch is to use tlb range flush in the kvm_age_hva().
If range flush is not available, kvm_flush_remote_tlbs_with_address()
will call kvm_flush_remote_tlbs().

Signed-off-by: Lan Tianyu <Tianyu.Lan@...rosoft.com>
---
 arch/x86/kvm/mmu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 295833dafc59..2e13aac28293 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -1994,7 +1994,7 @@ int kvm_age_hva(struct kvm *kvm, unsigned long start, unsigned long end,
 	int young = kvm_handle_hva_range(kvm, start, end, 0, kvm_age_rmapp);
 
 	if (flush && young > 0)
-		kvm_flush_remote_tlbs(kvm);
+		kvm_flush_remote_tlbs_with_address(kvm, start, end - start + 1);
 
 	return young;
 }
-- 
2.14.4