linux-kernel - Re: [PATCH] disable interrupt shadow state for emulated instruction

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Message-ID: <49DDA64F.9020000@redhat.com>
Date:	Thu, 09 Apr 2009 10:39:59 +0300
From:	Avi Kivity <avi@...hat.com>
To:	"H. Peter Anvin" <hpa@...or.com>
CC:	Glauber Costa <glommer@...hat.com>, kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] disable interrupt shadow state for emulated instruction

H. Peter Anvin wrote:
>
> How does this logic work when the instruction emulated is an STI or 
> MOV SS instruction?  In particular, when does 
> GUEST_INTERRUPTIBILITY_INFO sets set to reflect the *blocking* operation?

The processor sets it when emulating an sti or mov ss instruction.  We 
ought to set it when emulating same.


-- 
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.

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