From: Gleb Natapov <gleb@redhat.com>
To: kvm@vger.kernel.org
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, avi@redhat.com,
mingo@elte.hu, a.p.zijlstra@chello.nl, tglx@linutronix.de,
hpa@zytor.com, riel@redhat.com, cl@linux-foundation.org,
mtosatti@redhat.com
Subject: [PATCH v7 12/12] Send async PF when guest is not in userspace too.
Date: Thu, 14 Oct 2010 11:22:56 +0200 [thread overview]
Message-ID: <1287048176-2563-13-git-send-email-gleb@redhat.com> (raw)
In-Reply-To: <1287048176-2563-1-git-send-email-gleb@redhat.com>
If guest indicates that it can handle async pf in kernel mode too send
it, but only if interrupts are enabled.
Acked-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
---
arch/x86/kvm/x86.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 1e442df..51cff2f 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -6248,7 +6248,8 @@ void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
kvm_add_async_pf_gfn(vcpu, work->arch.gfn);
if (!(vcpu->arch.apf.msr_val & KVM_ASYNC_PF_ENABLED) ||
- kvm_x86_ops->get_cpl(vcpu) == 0)
+ (vcpu->arch.apf.send_user_only &&
+ kvm_x86_ops->get_cpl(vcpu) == 0))
kvm_make_request(KVM_REQ_APF_HALT, vcpu);
else if (!apf_put_user(vcpu, KVM_PV_REASON_PAGE_NOT_PRESENT)) {
vcpu->arch.fault.error_code = 0;
--
1.7.1
--
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next prev parent reply other threads:[~2010-10-14 9:23 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-14 9:22 [PATCH v7 00/12] KVM: Add host swap event notifications for PV guest Gleb Natapov
2010-10-14 9:22 ` [PATCH v7 01/12] Add get_user_pages() variant that fails if major fault is required Gleb Natapov
2010-10-14 9:22 ` [PATCH v7 02/12] Halt vcpu if page it tries to access is swapped out Gleb Natapov
2010-10-20 11:28 ` Jan Kiszka
2010-10-20 11:33 ` Gleb Natapov
2010-10-20 11:35 ` Jan Kiszka
2010-10-20 11:39 ` Gleb Natapov
2010-10-14 9:22 ` [PATCH v7 03/12] Retry fault before vmentry Gleb Natapov
2010-10-17 10:33 ` Avi Kivity
2010-10-17 10:43 ` Avi Kivity
2010-10-17 16:13 ` Gleb Natapov
2010-10-14 9:22 ` [PATCH v7 04/12] Add memory slot versioning and use it to provide fast guest write interface Gleb Natapov
2010-10-18 13:22 ` Gleb Natapov
2010-10-14 9:22 ` [PATCH v7 05/12] Move kvm_smp_prepare_boot_cpu() from kvmclock.c to kvm.c Gleb Natapov
2010-10-14 9:22 ` [PATCH v7 06/12] Add PV MSR to enable asynchronous page faults delivery Gleb Natapov
2010-10-14 9:22 ` [PATCH v7 07/12] Add async PF initialization to PV guest Gleb Natapov
2010-10-14 9:22 ` [PATCH v7 08/12] Handle async PF in a guest Gleb Natapov
2010-10-20 11:48 ` Jan Kiszka
2010-10-20 11:50 ` Jan Kiszka
2010-10-20 11:53 ` Peter Zijlstra
2010-10-14 9:22 ` [PATCH v7 09/12] Inject asynchronous page fault into a PV guest if page is swapped out Gleb Natapov
2010-10-14 9:22 ` [PATCH v7 10/12] Handle async PF in non preemptable context Gleb Natapov
2010-10-14 9:22 ` [PATCH v7 11/12] Let host know whether the guest can handle async PF in non-userspace context Gleb Natapov
2010-10-14 9:22 ` Gleb Natapov [this message]
2010-10-18 15:34 ` [PATCH v7 00/12] KVM: Add host swap event notifications for PV guest Marcelo Tosatti
-- strict thread matches above, loose matches on Subject: below --
2010-10-14 9:16 y
2010-10-14 9:17 ` [PATCH v7 12/12] Send async PF when guest is not in userspace too y
2010-10-14 9:17 ` y
2010-10-14 9:17 ` y
2010-10-14 9:17 ` y
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