KVM Archive on lore.kernel.org
 help / color / Atom feed
From: Wanpeng Li <kernellwp@gmail.com>
To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org
Cc: "Paolo Bonzini" <pbonzini@redhat.com>,
	"Radim Krčmář" <rkrcmar@redhat.com>,
	"Marcelo Tosatti" <mtosatti@redhat.com>
Subject: [PATCH v4 3/5] KVM: LAPIC: Ignore timer migration when lapic timer is injected by pi
Date: Mon, 17 Jun 2019 19:24:45 +0800
Message-ID: <1560770687-23227-4-git-send-email-wanpengli@tencent.com> (raw)
In-Reply-To: <1560770687-23227-1-git-send-email-wanpengli@tencent.com>

From: Wanpeng Li <wanpengli@tencent.com>

When lapic timer is injected by posted-interrupt, the emulated timer is
offload to the housekeeping cpu. The timer interrupt will be delivered
properly, no need to migrate timer.

Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
---
 arch/x86/kvm/lapic.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
index 9ceeee5..665b1bb 100644
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -2520,7 +2520,8 @@ void __kvm_migrate_apic_timer(struct kvm_vcpu *vcpu)
 {
 	struct hrtimer *timer;
 
-	if (!lapic_in_kernel(vcpu))
+	if (!lapic_in_kernel(vcpu) ||
+		posted_interrupt_inject_timer(vcpu))
 		return;
 
 	timer = &vcpu->arch.apic->lapic_timer.timer;
-- 
2.7.4


  parent reply index

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-17 11:24 [PATCH v4 0/5] KVM: LAPIC: Implement Exitless Timer Wanpeng Li
2019-06-17 11:24 ` [PATCH v4 1/5] KVM: LAPIC: Make lapic timer unpinned Wanpeng Li
2019-06-17 11:48   ` Peter Xu
2019-06-18  0:38     ` Wanpeng Li
2019-06-17 11:24 ` [PATCH v4 2/5] KVM: LAPIC: inject lapic timer interrupt by posted interrupt Wanpeng Li
2019-06-18 13:35   ` Marcelo Tosatti
2019-06-19  0:36     ` Wanpeng Li
2019-06-19 21:03       ` Marcelo Tosatti
2019-06-20  0:52         ` Wanpeng Li
2019-06-21  1:42         ` Wanpeng Li
2019-06-21 21:42           ` Marcelo Tosatti
2019-06-24  8:53             ` Wanpeng Li
2019-06-25 19:00               ` Marcelo Tosatti
2019-06-26 11:02                 ` Wanpeng Li
2019-06-26 16:44                   ` Marcelo Tosatti
2019-06-28  8:26                     ` Wanpeng Li
2019-06-25 17:02             ` Paolo Bonzini
2019-06-17 11:24 ` Wanpeng Li [this message]
2019-06-17 11:24 ` [PATCH v4 4/5] KVM: LAPIC: Don't posted inject already-expired timer Wanpeng Li
2019-06-17 11:24 ` [PATCH v4 5/5] KVM: LAPIC: add advance timer support to pi_inject_timer Wanpeng Li
2019-06-17 21:32   ` Radim Krčmář
2019-06-18  0:44     ` Wanpeng Li
2019-06-18  0:57       ` Wanpeng Li

Reply instructions:

You may reply publically 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=1560770687-23227-4-git-send-email-wanpengli@tencent.com \
    --to=kernellwp@gmail.com \
    --cc=kvm@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mtosatti@redhat.com \
    --cc=pbonzini@redhat.com \
    --cc=rkrcmar@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

KVM Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/kvm/0 kvm/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 kvm kvm/ https://lore.kernel.org/kvm \
		kvm@vger.kernel.org kvm@archiver.kernel.org
	public-inbox-index kvm

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.kvm


AGPL code for this site: git clone https://public-inbox.org/ public-inbox