This is a note to let you know that I've just added the patch titled
MIPS: KVM: Deliver guest interrupts after local_irq_disable()
to the 3.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
mips-kvm-deliver-guest-interrupts-after-local_irq_disable.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 044f0f03eca0110e1835b2ea038a484b93950328 Mon Sep 17 00:00:00 2001
From: James Hogan <james.hogan@xxxxxxxxxx>
Date: Thu, 29 May 2014 10:16:32 +0100
Subject: MIPS: KVM: Deliver guest interrupts after local_irq_disable()
From: James Hogan <james.hogan@xxxxxxxxxx>
commit 044f0f03eca0110e1835b2ea038a484b93950328 upstream.
When about to run the guest, deliver guest interrupts after disabling
host interrupts. This should prevent an hrtimer interrupt from being
handled after delivering guest interrupts, and therefore not delivering
the guest timer interrupt until after the next guest exit.
Signed-off-by: James Hogan <james.hogan@xxxxxxxxxx>
Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Cc: Gleb Natapov <gleb@xxxxxxxxxx>
Cc: kvm@xxxxxxxxxxxxxxx
Cc: Ralf Baechle <ralf@xxxxxxxxxxxxxx>
Cc: linux-mips@xxxxxxxxxxxxxx
Cc: Sanjay Lal <sanjayl@xxxxxxxxxxx>
Signed-off-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/mips/kvm/kvm_mips.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/mips/kvm/kvm_mips.c
+++ b/arch/mips/kvm/kvm_mips.c
@@ -418,11 +418,11 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_v
vcpu->mmio_needed = 0;
}
+ local_irq_disable();
/* Check if we have any exceptions/interrupts pending */
kvm_mips_deliver_interrupts(vcpu,
kvm_read_c0_guest_cause(vcpu->arch.cop0));
- local_irq_disable();
kvm_guest_enter();
r = __kvm_mips_vcpu_run(run, vcpu);
Patches currently in stable-queue which might be from james.hogan@xxxxxxxxxx are
queue-3.14/mips-kvm-deliver-guest-interrupts-after-local_irq_disable.patch
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