From: Avi Kivity <avi@redhat.com>
To: Glauber Costa <glommer@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>,
kvm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] disable interrupt shadow state for emulated instruction
Date: Thu, 09 Apr 2009 10:41:19 +0300 [thread overview]
Message-ID: <49DDA69F.9040808@redhat.com> (raw)
In-Reply-To: <20090408183110.GD25323@poweredge.glommer>
Glauber Costa 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?
>>
> mov ss is a non-issue, since it is executed natively.
>
Except in big real mode (needs emulate_invalid_guest_state = 1).
> As for sti, I'm not sure. I see code for emulating sti, but in my testings,
> this code was never ever touched, under a number of different scenarios.
> Avi, can you clarify if sti can be in fact emulated, and under which
> circunstamces?
>
big real mode only.
--
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.
next prev parent reply other threads:[~2009-04-09 7:40 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-08 17:57 [PATCH] disable interrupt shadow state for emulated instruction Glauber Costa
2009-04-08 18:16 ` H. Peter Anvin
2009-04-08 18:31 ` Glauber Costa
2009-04-08 18:31 ` H. Peter Anvin
2009-04-08 18:43 ` Glauber Costa
2009-04-08 19:45 ` Gleb Natapov
2009-04-09 7:41 ` Avi Kivity
2009-04-09 7:41 ` Avi Kivity [this message]
2009-04-09 7:39 ` Avi Kivity
2009-04-08 19:48 ` Gleb Natapov
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