From: "Radim Krčmář" <rkrcmar@redhat.com>
To: linux-kernel@vger.kernel.org
Cc: kvm@vger.kernel.org, Paolo Bonzini <pbonzini@redhat.com>,
Steve Rutherford <srutherford@google.com>,
stable@vger.kernel.org
Subject: [PATCH 0/2] KVM: x86: fix edge EOI and IOAPIC reconfig race
Date: Thu, 13 Aug 2015 15:46:08 +0200 [thread overview]
Message-ID: <1439473570-13763-1-git-send-email-rkrcmar@redhat.com> (raw)
[1/2] changes sync_pir_to_irr interface to avoid a definitely
superfluous KVM_REQ_EVENT in [2/2]. It's possible that we don't need
KVM_REQ_EVENT, but a slight slowdown in execution is worth the time
needed for a proof. (A quick test showed that KVM_REQ_EVENT is always
already set if sync_pir_to_irr does something.)
[2/2] is applicable to userspace split IOAPIC as well, but I hope that
we want it to work like normal IOAPIC (no ACK for edge irq), so I
haven't fixed it.
Radim Krčmář (2):
KVM: x86: return bool from x86_ops.sync_pir_to_irr
KVM: x86: fix edge EOI and IOAPIC reconfig race
arch/x86/include/asm/kvm_host.h | 2 +-
arch/x86/kvm/ioapic.c | 7 ++++++-
arch/x86/kvm/svm.c | 4 ++--
arch/x86/kvm/vmx.c | 12 +++++++-----
4 files changed, 16 insertions(+), 9 deletions(-)
--
2.5.0
next reply other threads:[~2015-08-13 13:46 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-13 13:46 Radim Krčmář [this message]
2015-08-13 13:46 ` [PATCH 1/2] KVM: x86: return bool from x86_ops.sync_pir_to_irr Radim Krčmář
2015-08-13 13:46 ` [PATCH 2/2] KVM: x86: fix edge EOI and IOAPIC reconfig race Radim Krčmář
2015-08-13 14:53 ` Paolo Bonzini
2015-08-14 8:38 ` Radim Krčmář
2015-08-15 0:00 ` Paolo Bonzini
2015-10-06 20:33 ` Radim Krčmář
2015-10-07 9:31 ` Paolo Bonzini
2015-10-07 15:05 ` Radim Krčmář
2015-10-07 9:29 ` Paolo Bonzini
2015-10-07 15:01 ` Radim Krčmář
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