From: Gleb Natapov <gleb@redhat.com>
To: Jan Kiszka <jan.kiszka@web.de>
Cc: avi@redhat.com, kvm@vger.kernel.org,
Bernhard Kohl <bernhard.kohl@nsn.com>,
"Ostler, Thomas (NSN - DE/Munich)" <thomas.ostler@nsn.com>,
bliitz@users.sourceforge.net
Subject: Re: [PATCH 4/4] Fix task switching.
Date: Mon, 30 Mar 2009 19:21:55 +0300 [thread overview]
Message-ID: <20090330162155.GI25718@redhat.com> (raw)
In-Reply-To: <49D0ED9D.9080600@web.de>
On Mon, Mar 30, 2009 at 06:04:45PM +0200, Jan Kiszka wrote:
> Gleb Natapov wrote:
> > The patch fixes two problems with task switching.
> > 1. Back link is written to a wrong TSS.
> > 2. Instruction emulation is not needed if the reason for task switch
> > is a task gate in IDT and access to it is caused by an external even.
> >
> > 2 is currently solved only for VMX since there is not reliable way to
> > skip an instruction in SVM. We should emulate it instead.
>
> Does this series fix all issues Bernhard, Thomas and Julian stumbled over?
>
Haven't tried. I wrote my own tests for task switching. How can I check it?
--
Gleb.
next prev parent reply other threads:[~2009-03-30 16:22 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-29 14:12 [PATCH 1/4] Fix handling of a fault during NMI unblocked due to IRET Gleb Natapov
2009-03-29 14:12 ` [PATCH 2/4] Rewrite twisted maze of if() statements with more straightforward switch() Gleb Natapov
2009-03-30 7:35 ` Avi Kivity
2009-03-30 16:03 ` Jan Kiszka
2009-03-29 14:12 ` [PATCH 3/4] Do not zero idt_vectoring_info in vmx_complete_interrupts() Gleb Natapov
2009-03-29 14:12 ` [PATCH 4/4] Fix task switching Gleb Natapov
2009-03-30 7:39 ` Avi Kivity
2009-03-30 13:06 ` Gleb Natapov
2009-03-30 16:04 ` Jan Kiszka
2009-03-30 16:21 ` Gleb Natapov [this message]
2009-03-30 16:35 ` Jan Kiszka
2009-03-30 16:39 ` Gleb Natapov
2009-03-30 16:46 ` Gleb Natapov
2009-03-30 23:54 ` Julian Stecklina
2009-03-31 9:03 ` Kohl, Bernhard (NSN - DE/Munich)
2009-03-31 15:21 ` Kohl, Bernhard (NSN - DE/Munich)
2009-03-31 15:22 ` Gleb Natapov
2009-04-01 7:21 ` Jan Kiszka
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