Re: Enable IRQ windows after exception injection if there are pending virq

From: Gleb Natapov <gleb@redhat.com>
To: "Dong, Eddie" <eddie.dong@intel.com>
Cc: Avi Kivity <avi@redhat.com>, "kvm@vger.kernel.org" <kvm@vger.kernel.org>
Subject: Re: Enable IRQ windows after exception injection if there are pending virq
Date: Wed, 13 May 2009 13:29:04 +0300	[thread overview]
Message-ID: <20090513102904.GU18554@redhat.com> (raw)
In-Reply-To: <9832F13BD22FB94A829F798DA4A8280501B24E5AEF@pdsmsx503.ccr.corp.intel.com>

On Wed, May 13, 2009 at 03:45:37PM +0800, Dong, Eddie wrote:
> Gleb Natapov wrote:
> > On Tue, May 12, 2009 at 11:06:39PM +0800, Dong, Eddie wrote:
> >> 
> >> I didn't take many test since our PTS system stop working now due to
> >> KVM userspace 
> >> build changes. But since the logic is pretty simple, so I want to
> >> post here to see comments. Thx, eddie 
> >> 
> >> 
> >> 
> >> 
> >> If there is pending irq after an virtual exception is injected,
> >> KVM needs to enable IRQ window to trap back earlier once
> >> the exception is handled.
> >> 
> > I already posted patch to do that
> > http://patchwork.kernel.org/patch/21830/ Is you patch different?
> > 
> Is it base on the idea I mentioned to you in private mail (April 27), or a novel one?
> 
Yes. It fixes the bug you pointed out.

--
			Gleb.