From: Joerg Roedel <joerg.roedel@amd.com>
To: Kevin Wolf <kwolf@redhat.com>
Cc: Gleb Natapov <gleb@redhat.com>, <kvm@vger.kernel.org>
Subject: Re: [RFC PATCH] emulator: Fix task switch into/out of VM86
Date: Mon, 16 Jan 2012 16:57:53 +0100 [thread overview]
Message-ID: <20120116155753.GA21169@amd.com> (raw)
In-Reply-To: <4F14443D.10306@redhat.com>
On Mon, Jan 16, 2012 at 04:37:33PM +0100, Kevin Wolf wrote:
> Am 10.01.2012 18:51, schrieb Joerg Roedel:
> >> Joerg, do you know how can we check that task switch was cause by an
> >> exception triggering task gate if exit_int_info is not provided during
> >> intercept (short of decoding instruction that caused intercept to see if
> >> it's a call to a gate, which is racy) ?
> >
> > Hmm, havn't found a solution yet. But I will check further and let you
> > know if I find out something.
>
> Jörg, any news on this?
Not yet. We are currently trying to figure out which priviledge checks
the software has to do and which ones are done by the hardware before a
task-switch intercept is thrown.
Joerg
--
AMD Operating System Research Center
Advanced Micro Devices GmbH Einsteinring 24 85609 Dornach
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Registration: Dornach, Landkr. Muenchen; Registerger. Muenchen, HRB Nr. 43632
prev parent reply other threads:[~2012-01-16 15:58 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-09 20:10 [RFC PATCH] emulator: Fix task switch into/out of VM86 Kevin Wolf
2012-01-10 3:08 ` Takuya Yoshikawa
2012-01-10 4:07 ` Takuya Yoshikawa
2012-01-10 9:01 ` Gleb Natapov
2012-01-10 9:28 ` Kevin Wolf
2012-01-10 10:17 ` Gleb Natapov
2012-01-10 11:25 ` Kevin Wolf
2012-01-10 11:30 ` Gleb Natapov
2012-01-10 17:51 ` Joerg Roedel
2012-01-16 15:37 ` Kevin Wolf
2012-01-16 15:57 ` Joerg Roedel [this message]
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