diff mbox

[v2,1/6] x86: PIT connects to pin 2 of IOAPIC

Message ID 1353485379-6823-2-git-send-email-yang.z.zhang@intel.com (mailing list archive)
State New, archived
Headers show

Commit Message

Zhang, Yang Z Nov. 21, 2012, 8:09 a.m. UTC
When PIT connects to IOAPIC, it route to pin 2 not pin 0.

Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
---
 virt/kvm/ioapic.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

Comments

Gleb Natapov Nov. 28, 2012, 10:50 a.m. UTC | #1
On Wed, Nov 21, 2012 at 04:09:34PM +0800, Yang Zhang wrote:
> When PIT connects to IOAPIC, it route to pin 2 not pin 0.
> 
> Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
> ---
>  virt/kvm/ioapic.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/virt/kvm/ioapic.c b/virt/kvm/ioapic.c
> index cfb7e4d..166c450 100644
> --- a/virt/kvm/ioapic.c
> +++ b/virt/kvm/ioapic.c
> @@ -181,7 +181,7 @@ static int ioapic_deliver(struct kvm_ioapic *ioapic, int irq)
>  
>  #ifdef CONFIG_X86
>  	/* Always delivery PIT interrupt to vcpu 0 */
> -	if (irq == 0) {
> +	if (irq == 2) {
Hmm, this means all this time the code didn't work correctly which makes
me wonder if we need this hack at all.

>  		irqe.dest_mode = 0; /* Physical mode. */
>  		/* need to read apic_id from apic regiest since
>  		 * it can be rewritten */
> -- 
> 1.7.1

--
			Gleb.
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diff mbox

Patch

diff --git a/virt/kvm/ioapic.c b/virt/kvm/ioapic.c
index cfb7e4d..166c450 100644
--- a/virt/kvm/ioapic.c
+++ b/virt/kvm/ioapic.c
@@ -181,7 +181,7 @@  static int ioapic_deliver(struct kvm_ioapic *ioapic, int irq)
 
 #ifdef CONFIG_X86
 	/* Always delivery PIT interrupt to vcpu 0 */
-	if (irq == 0) {
+	if (irq == 2) {
 		irqe.dest_mode = 0; /* Physical mode. */
 		/* need to read apic_id from apic regiest since
 		 * it can be rewritten */