From: Keir Fraser <keir.fraser@eu.citrix.com>
To: Kouya Shimura <kouya@jp.fujitsu.com>,
"xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>
Subject: Re: [PATCH] vmx: correct EIP value of task-state segment
Date: Fri, 31 Jul 2009 08:36:42 +0100 [thread overview]
Message-ID: <C6985D9A.110FD%keir.fraser@eu.citrix.com> (raw)
In-Reply-To: <7kab2ld4yx.fsf@pingu.sky.yk.fujitsu.co.jp>
On 31/07/2009 02:19, "Kouya Shimura" <kouya@jp.fujitsu.com> wrote:
> Major OSes(Linux, windows, ...) don't seem to use task switching.
> So this bug is missed.
>
> Signed-off-by: Kouya Shimura <kouya@jp.fujitsu.com>
What about SVM, and what if the reason for the task switch is a hardware
interrupt or exception (the only case we care about for Windows at least)?
The reference manuals are sketchy enough you may need to test out some task
switches on SVM and VMX hardware to make sure you make patches that really
do the right thing.
-- Keir
next prev parent reply other threads:[~2009-07-31 7:36 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-31 1:19 [PATCH] vmx: correct EIP value of task-state segment Kouya Shimura
2009-07-31 7:36 ` Keir Fraser [this message]
2009-07-31 9:34 ` Kouya Shimura
2009-07-31 10:17 ` Keir Fraser
2009-07-31 12:18 ` Juergen Gross
2009-07-31 12:39 ` Keir Fraser
2009-08-20 12:40 ` Keir Fraser
2009-08-24 2:28 ` Kouya Shimura
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