[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Xen-devel] [PATCH] Fix 32bit SMP Vista bootup issue

  • To: <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: "Yang, Xiaowei" <xiaowei.yang@xxxxxxxxx>
  • Date: Wed, 25 Oct 2006 16:57:22 +0800
  • Delivery-date: Wed, 25 Oct 2006 05:37:12 -0700
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: Acb4E5V5aPB+w24xTfe5L3CzEVbV8Q==
  • Thread-topic: [PATCH] Fix 32bit SMP Vista bootup issue

As we know, 32bit SMP Vista uses RTC as periodic timer for timekeeping.
It programs ioapic to deliver RTC interrupt to vcpu0. When vcpu0 handles
RTC interrupt, it sends IPI with the same vector number ioapic uses for
RTC entry to notify other processor to do time related work, like
scheduling. hvm_interrupt_post() mistakes it for another timer interrupt
and does some extra unwanted work, which makes RTC read result error
sometimes. This patch fixes it.

Signed-off-by: Xiaowei Yang <xiaowei.yang@xxxxxxxxx>


Attachment: 32smp.patch
Description: 32smp.patch

Xen-devel mailing list



Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.