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From: Richard Henderson <rth@twiddle.net>
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Date: Mon, 17 Aug 2015 08:40:47 -0700
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Subject: Re: [Qemu-devel] Debian 7.8.0 SPARC64 on qemu - anything i can do
 to speedup the emulation?
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To: Artyom Tarasenko <atar4qemu@gmail.com>, Aurelien Jarno <aurelien@aurel32.net>
Cc: alex.bennee@linaro.org, qemu-devel <qemu-devel@nongnu.org>, Dennis Luehring <dl.soluz@gmx.net>, Karel Gardas <gardask@gmail.com>

On 08/17/2015 07:19 AM, Artyom Tarasenko wrote:
> Well, on the other hand, every access goes via helper_check_align.
> There is a comment /* XXX remove alignment check */.
> I wonder how this can be done in a  more efficient way?

Not ever access does so.  There are only 3 memory related calls to check_align.
 The other three are for indirect branches.

For the 8 byte memory operations we can just remove the checks.  There, the
softmmu operation checks the alignment.  For usermode, we've typically ignored
the guest alignment (which also causes failures for a host that requires
alignment emulating a guest that does not).


r~