From: Avi Kivity <avi@redhat.com>
To: Gleb Natapov <gleb@redhat.com>
Cc: Mohammed Gamal <m.gamal005@gmail.com>,
mtosatti@redhat.com, kvm@vger.kernel.org
Subject: Re: [PATCH 2/2] x86: Bail out on unemulated instructions
Date: Sun, 15 Aug 2010 18:58:06 +0300 [thread overview]
Message-ID: <4C680E8E.2090001@redhat.com> (raw)
In-Reply-To: <20100815124900.GS10499@redhat.com>
On 08/15/2010 03:49 PM, Gleb Natapov wrote:
>>
>> True. Can we do it for real mode in general (i.e. X86EMUL_MODE_REAL)?
> If we flush all shadow pages when moving from paged mode to non paged
> checking for X86EMUL_MODE_REAL sounds enough to me, but Avi knows better.
> Or we can add is_big_real_mode() callback to x86_ops and implement it in
> vmx accordingly.
Neither are possible. We can have one cpu in big real mode and others
in paged mode, so even in real mode we cannot rule out a spurious page
fault due to shadow write protection.
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2010-08-15 15:58 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-14 15:51 [PATCH 1/2] x86 emulator: Fix emulator return values Mohammed Gamal
2010-08-14 15:51 ` [PATCH 2/2] x86: Bail out on unemulated instructions Mohammed Gamal
2010-08-15 7:32 ` Gleb Natapov
2010-08-15 12:40 ` Mohammed Gamal
2010-08-15 12:41 ` Gleb Natapov
2010-08-15 12:43 ` Mohammed Gamal
2010-08-15 12:49 ` Gleb Natapov
2010-08-15 15:58 ` Avi Kivity [this message]
2010-08-15 16:11 ` Gleb Natapov
2010-08-15 16:17 ` Avi Kivity
2010-08-15 15:40 ` Avi Kivity
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