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From: Gleb Natapov <gleb@redhat.com>
To: avi@redhat.com
Cc: kvm@vger.kernel.org, Gleb Natapov <gleb@redhat.com>
Subject: [PATCH 08/10] Do not migrate pending software interrupts.
Date: Mon, 11 May 2009 13:35:53 +0300	[thread overview]
Message-ID: <1242038155-8759-8-git-send-email-gleb@redhat.com> (raw)
In-Reply-To: <1242038155-8759-1-git-send-email-gleb@redhat.com>

INTn will be re-executed after migration. If we wanted to migrate
pending software interrupt we would need to migrate interrupt type
and instruction length too, but we do not have all required info on
SVM, so SVM->VMX migration would need to re-execute INTn anyway. To
make it simple never migrate pending soft interrupt.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
---
 arch/x86/kvm/x86.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index f0655ef..2729c4b 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -3567,7 +3567,7 @@ int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
 
 	memset(sregs->interrupt_bitmap, 0, sizeof sregs->interrupt_bitmap);
 
-	if (vcpu->arch.interrupt.pending)
+	if (vcpu->arch.interrupt.pending && !vcpu->arch.interrupt.soft)
 		set_bit(vcpu->arch.interrupt.nr,
 			(unsigned long *)sregs->interrupt_bitmap);
 
-- 
1.6.2.1


  parent reply	other threads:[~2009-05-11 10:35 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-05-11 10:35 [PATCH 01/10] Unprotect a page if #PF happens during NMI injection Gleb Natapov
2009-05-11 10:35 ` [PATCH 02/10] Do not allow interrupt injection from userspace if there is a pending event Gleb Natapov
2009-05-11 10:35 ` [PATCH 03/10] Remove irq_pending bitmap Gleb Natapov
2009-05-11 10:35 ` [PATCH 04/10] [SVM] skip_emulated_instruction() decode an instruction if size is not known Gleb Natapov
2009-05-11 10:35 ` [PATCH 05/10] [VMX] Do not re-execute INTn instruction Gleb Natapov
2009-05-11 10:35 ` [PATCH 06/10] IRQ/NMI window should always be requested Gleb Natapov
2009-05-11 10:35 ` [PATCH 07/10] [SVM] inject NMI after IRET from a previous NMI, not before Gleb Natapov
2009-05-11 10:35 ` Gleb Natapov [this message]
2009-05-11 10:35 ` [PATCH 09/10] Disable CR8 intercept if tpr patching is active Gleb Natapov
2009-05-11 10:35 ` [PATCH 10/10] Move "exit due to NMI" handling into vmx_complete_interrupts() Gleb Natapov
2009-05-13 12:07 ` [PATCH 01/10] Unprotect a page if #PF happens during NMI injection Avi Kivity

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