From: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
To: Avi Kivity <avi@redhat.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>,
LKML <linux-kernel@vger.kernel.org>, KVM <kvm@vger.kernel.org>
Subject: [PATCH v4 08/11] KVM: MMU: remove unnecessary kvm_mmu_free_some_pages
Date: Thu, 22 Sep 2011 16:56:58 +0800 [thread overview]
Message-ID: <4E7AF85A.4050102@cn.fujitsu.com> (raw)
In-Reply-To: <4E7AF758.7060900@cn.fujitsu.com>
In kvm_mmu_pte_write, we do not need to alloc shadow page, so calling
kvm_mmu_free_some_pages is really unnecessary
Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
---
arch/x86/kvm/mmu.c | 1 -
1 files changed, 0 insertions(+), 1 deletions(-)
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 4128aba..7b22f3a 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -3589,7 +3589,6 @@ void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
*/
mmu_topup_memory_caches(vcpu);
spin_lock(&vcpu->kvm->mmu_lock);
- kvm_mmu_free_some_pages(vcpu);
++vcpu->kvm->stat.mmu_pte_write;
trace_kvm_mmu_audit(vcpu, AUDIT_PRE_PTE_WRITE);
if (gfn == vcpu->arch.last_pt_write_gfn
--
1.7.5.4
next prev parent reply other threads:[~2011-09-22 8:54 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-22 8:52 [PATCH v4 00/11] KVM: x86: optimize for writing guest page Xiao Guangrong
2011-09-22 8:53 ` [PATCH v4 01/11] KVM: MMU: avoid pte_list_desc running out in kvm_mmu_pte_write Xiao Guangrong
2011-09-22 8:53 ` [PATCH v4 02/11] KVM: x86: tag the instructions which are used to write page table Xiao Guangrong
2011-09-22 8:55 ` [PATCH v4 04/11] KVM: x86: cleanup port-in/port-out emulated Xiao Guangrong
2011-09-22 8:55 ` [PATCH v4 05/11] KVM: MMU: do not mark accessed bit on pte write path Xiao Guangrong
2011-09-22 8:56 ` [PATCH v4 06/11] KVM: MMU: cleanup FNAME(invlpg) Xiao Guangrong
2011-09-22 8:56 ` [PATCH v4 07/11] KVM: MMU: fast prefetch spte on invlpg path Xiao Guangrong
2011-09-22 8:56 ` Xiao Guangrong [this message]
2011-09-22 8:57 ` [PATCH v4 09/11] KVM: MMU: split kvm_mmu_pte_write function Xiao Guangrong
2011-09-22 8:57 ` [PATCH v4 10/11] KVM: MMU: fix detecting misaligned accessed Xiao Guangrong
2011-09-22 8:58 ` [PATCH v4 11/11] KVM: MMU: improve write flooding detected Xiao Guangrong
2011-09-22 9:02 ` [PATCH v4 03/11] KVM: x86: retry non-page-table writing instructions Xiao Guangrong
2011-09-23 11:51 ` [PATCH v4 00/11] KVM: x86: optimize for writing guest page Marcelo Tosatti
2011-09-30 3:49 ` Xiao Guangrong
2011-10-05 13:25 ` Avi Kivity
2011-10-06 17:50 ` Marcelo Tosatti
2011-10-06 17:53 ` Marcelo Tosatti
2011-10-08 4:06 ` Xiao Guangrong
2011-10-09 12:24 ` Avi Kivity
2011-10-09 13:37 ` Avi Kivity
2011-10-11 8:36 ` Xiao Guangrong
2011-11-04 9:16 ` Xiao Guangrong
2011-11-06 15:35 ` Avi Kivity
2011-11-10 13:28 ` Xiao Guangrong
2011-11-10 14:05 ` Avi Kivity
2011-11-11 3:42 ` Xiao Guangrong
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