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Re: [Qemu-devel] [PATCH] target-arm: fix LDMIA bug on page boundary


From: Peter Maydell
Subject: Re: [Qemu-devel] [PATCH] target-arm: fix LDMIA bug on page boundary
Date: Tue, 26 Apr 2011 18:17:14 +0100

On 25 April 2011 02:23, YuYeon Oh <address@hidden> wrote:
> target-arm: fix LDMIA bug on page boundary

(You don't need to repeat the Subject summary line in the body, it makes the
git changelog look a bit odd when the patch is applied with 'git am').

> When consecutive memory locations are on page boundary, a base register may be
> loaded before page fault occurs. After page fault handling, it losts the 
> memory
> location information. To solve this problem, loading a base register has to 
> put back.
>
> Signed-off-by: Yuyeon Oh <address@hidden>

Reviewed-by: Peter Maydell <address@hidden>

I've tested this and confirmed that it fixes this bug for the
Thumb T2 encoding. However, the same problem still exists for the
T1 (16 bit) encoding; I'll send a patch for that in a moment.
(The ARM encoding did not have this bug.)

-- PMM



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