diff options
Diffstat (limited to 'extras/recipes-kernel/linux/linux-omap/linus/0044-KVM-i8259-initialize-isr_ack.patch')
| -rw-r--r-- | extras/recipes-kernel/linux/linux-omap/linus/0044-KVM-i8259-initialize-isr_ack.patch | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/extras/recipes-kernel/linux/linux-omap/linus/0044-KVM-i8259-initialize-isr_ack.patch b/extras/recipes-kernel/linux/linux-omap/linus/0044-KVM-i8259-initialize-isr_ack.patch new file mode 100644 index 00000000..0f47f868 --- /dev/null +++ b/extras/recipes-kernel/linux/linux-omap/linus/0044-KVM-i8259-initialize-isr_ack.patch @@ -0,0 +1,32 @@ +From 1e144569ab9d311fa5e08efc9a7fb35853d697d9 Mon Sep 17 00:00:00 2001 +From: Avi Kivity <avi@redhat.com> +Date: Fri, 31 Dec 2010 10:52:15 +0200 +Subject: [PATCH 44/65] KVM: i8259: initialize isr_ack + +isr_ack is never initialized. So, until the first PIC reset, interrupts +may fail to be injected. This can cause Windows XP to fail to boot, as +reported in the fallout from the fix to +https://bugzilla.kernel.org/show_bug.cgi?id=21962. + +Reported-and-tested-by: Nicolas Prochazka <prochazka.nicolas@gmail.com> +Signed-off-by: Avi Kivity <avi@redhat.com> +--- + arch/x86/kvm/i8259.c | 2 ++ + 1 files changed, 2 insertions(+), 0 deletions(-) + +diff --git a/arch/x86/kvm/i8259.c b/arch/x86/kvm/i8259.c +index f628234..3cece05 100644 +--- a/arch/x86/kvm/i8259.c ++++ b/arch/x86/kvm/i8259.c +@@ -575,6 +575,8 @@ struct kvm_pic *kvm_create_pic(struct kvm *kvm) + s->pics[1].elcr_mask = 0xde; + s->pics[0].pics_state = s; + s->pics[1].pics_state = s; ++ s->pics[0].isr_ack = 0xff; ++ s->pics[1].isr_ack = 0xff; + + /* + * Initialize PIO device +-- +1.6.6.1 + |