From: Laszlo Ersek <lersek@redhat.com>
To: Alex Williamson <alex.williamson@redhat.com>
Cc: rth@twiddle.net, qemu-devel@nongnu.org, qemu-stable@nongnu.org
Subject: Re: [Qemu-devel] [PATCH v2] exec: Fix non-power-of-2 sized accesses
Date: Fri, 16 Aug 2013 15:37:35 +0200 [thread overview]
Message-ID: <520E2B1F.6010109@redhat.com> (raw)
In-Reply-To: <20130816124915.12577.72732.stgit@bling.home>
On 08/16/13 14:50, Alex Williamson wrote:
> Since commit 23326164 we align access sizes to match the alignment of
> the address, but we don't align the access size itself. This means we
> let illegal access sizes (ex. 3) slip through if the address is
> sufficiently aligned (ex. 4). This results in an abort which would be
> easy for a guest to trigger. Account for aligning the access size.
>
> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
> Cc: qemu-stable@nongnu.org
> Reviewed-by: Laszlo Ersek <lersek@redhat.com>
yeah
> ---
>
> v2: Remove unnecessary loop condition
>
> exec.c | 7 +++++++
> 1 file changed, 7 insertions(+)
next prev parent reply other threads:[~2013-08-16 13:35 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-16 12:50 [Qemu-devel] [PATCH v2] exec: Fix non-power-of-2 sized accesses Alex Williamson
2013-08-16 13:37 ` Laszlo Ersek [this message]
2013-08-16 15:27 ` Richard Henderson
2013-08-16 15:37 ` Alex Williamson
2013-08-16 15:43 ` Alex Williamson
2013-08-16 15:46 ` Alex Williamson
2013-08-16 19:46 ` Richard Henderson
2013-08-16 20:04 ` Eric Blake
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