All of lore.kernel.org
 help / color / mirror / Atom feed
From: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
To: gleb@redhat.com
Cc: avi.kivity@gmail.com, mtosatti@redhat.com, pbonzini@redhat.com,
	linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
	Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Subject: [PATCH v6 1/7] KVM: MMU: drop unnecessary kvm_reload_remote_mmus
Date: Fri, 17 May 2013 05:12:56 +0800	[thread overview]
Message-ID: <1368738782-18649-2-git-send-email-xiaoguangrong@linux.vnet.ibm.com> (raw)
In-Reply-To: <1368738782-18649-1-git-send-email-xiaoguangrong@linux.vnet.ibm.com>

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@linux.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


  reply	other threads:[~2013-05-16 21:15 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-05-16 21:12 [PATCH v6 0/7] KVM: MMU: fast zap all shadow pages Xiao Guangrong
2013-05-16 21:12 ` Xiao Guangrong [this message]
2013-05-16 21:12 ` [PATCH v6 2/7] KVM: MMU: delete shadow page from hash list in kvm_mmu_prepare_zap_page Xiao Guangrong
2013-05-19 10:47   ` Gleb Natapov
2013-05-20  9:19     ` Xiao Guangrong
2013-05-20  9:42       ` Gleb Natapov
2013-05-16 21:12 ` [PATCH v6 3/7] KVM: MMU: fast invalidate all pages Xiao Guangrong
2013-05-19 10:04   ` Gleb Natapov
2013-05-20  9:12     ` Xiao Guangrong
2013-05-20 19:46   ` Marcelo Tosatti
2013-05-20 20:15     ` Gleb Natapov
2013-05-20 20:40       ` Marcelo Tosatti
2013-05-21  3:36         ` Xiao Guangrong
2013-05-21  8:45           ` Gleb Natapov
2013-05-22  1:41           ` Marcelo Tosatti
2013-05-21  8:39         ` Gleb Natapov
2013-05-22  1:33           ` Marcelo Tosatti
2013-05-22  6:34             ` Gleb Natapov
2013-05-22  8:46               ` Xiao Guangrong
2013-05-22  8:54                 ` Gleb Natapov
2013-05-22  9:41                   ` Xiao Guangrong
2013-05-22 13:17                     ` Gleb Natapov
2013-05-22 15:25                       ` Xiao Guangrong
2013-05-22 15:42                         ` Gleb Natapov
2013-05-22 15:06               ` Marcelo Tosatti
2013-05-16 21:12 ` [PATCH v6 4/7] KVM: MMU: zap pages in batch Xiao Guangrong
2013-05-16 21:13 ` [PATCH v6 5/7] KVM: x86: use the fast way to invalidate all pages Xiao Guangrong
2013-05-16 21:13 ` [PATCH v6 6/7] KVM: MMU: show mmu_valid_gen in shadow page related tracepoints Xiao Guangrong
2013-05-16 21:13 ` [PATCH v6 7/7] KVM: MMU: add tracepoint for kvm_mmu_invalidate_all_pages Xiao Guangrong
2013-05-19 10:49 ` [PATCH v6 0/7] KVM: MMU: fast zap all shadow pages Gleb Natapov

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1368738782-18649-2-git-send-email-xiaoguangrong@linux.vnet.ibm.com \
    --to=xiaoguangrong@linux.vnet.ibm.com \
    --cc=avi.kivity@gmail.com \
    --cc=gleb@redhat.com \
    --cc=kvm@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mtosatti@redhat.com \
    --cc=pbonzini@redhat.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.