linux-kernel - [PATCH v6 1/7] KVM: MMU: drop unnecessary kvm_reload_remote

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Message-Id: <1368738782-18649-2-git-send-email-xiaoguangrong@linux.vnet.ibm.com>
Date:	Fri, 17 May 2013 05:12:56 +0800
From:	Xiao Guangrong <xiaoguangrong@...ux.vnet.ibm.com>
To:	gleb@...hat.com
Cc:	avi.kivity@...il.com, mtosatti@...hat.com, pbonzini@...hat.com,
	linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
	Xiao Guangrong <xiaoguangrong@...ux.vnet.ibm.com>
Subject: [PATCH v6 1/7] KVM: MMU: drop unnecessary kvm_reload_remote_mmus

It is the responsibility of kvm_mmu_zap_all that keeps the
consistent of mmu and tlbs. And it is also unnecessary after
zap all mmio sptes since no mmio spte exists on root shadow
page and it can not be cached into tlb

Signed-off-by: Xiao Guangrong <xiaoguangrong@...ux.vnet.ibm.com>
---
 arch/x86/kvm/x86.c |    5 +----
 1 files changed, 1 insertions(+), 4 deletions(-)

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 8d28810..d885418 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -7067,16 +7067,13 @@ void kvm_arch_commit_memory_region(struct kvm *kvm,
 	 * If memory slot is created, or moved, we need to clear all
 	 * mmio sptes.
 	 */
-	if ((change == KVM_MR_CREATE) || (change == KVM_MR_MOVE)) {
+	if ((change == KVM_MR_CREATE) || (change == KVM_MR_MOVE))
 		kvm_mmu_zap_mmio_sptes(kvm);
-		kvm_reload_remote_mmus(kvm);
-	}
 }
 
 void kvm_arch_flush_shadow_all(struct kvm *kvm)
 {
 	kvm_mmu_zap_all(kvm);
-	kvm_reload_remote_mmus(kvm);
 }
 
 void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
-- 
1.7.7.6

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