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Date: Wed, 16 Dec 2009 01:41:50 +0100
From: Jan Kiszka <jan.kiszka@web.de>
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Subject: [Qemu-devel] Re: [FOR 0.12][PATCH] target-i386: Fix evaluation of
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To: TeLeMan <geleman@gmail.com>
Cc: Anthony Liguori <aliguori@us.ibm.com>, qemu-devel <qemu-devel@nongnu.org>

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TeLeMan wrote:
>> Now to the content: env already equals single_cpu_env, so there is no
>> need in writing it back. That's because break/watchpoints are triggere=
d
>> synchronously over the context in which they may raise an exception as=

>> result.
> env in op_help.c is asm(AREG0) not single_cpu_env.

Which makes no difference due to the synchronous characteristics. The
point where env and single_cpu_env diverges while a vcpu is running is
the beginning of a bug.

> Did you test your codes?

I'm using it, including SMP.

There is still a bug, but it's unrelated to the context. It's related to
watchpoints triggering in helper function instead of generated code.
Will fix that later.

Jan


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