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Re: [Qemu-devel] [PATCH 2/2] tcg/i386: Reserve register for guest_base i


From: Paolo Bonzini
Subject: Re: [Qemu-devel] [PATCH 2/2] tcg/i386: Reserve register for guest_base if a segment isn't available
Date: Fri, 17 Jul 2015 17:30:15 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.0.1


On 17/07/2015 03:33, Peter Maydell wrote:
> On 16 July 2015 at 22:25, Richard Henderson <address@hidden> wrote:
> > This saves 2 insns and 10 bytes from the implementation of
> > each memory operation.
> 
> Do we have an idea of which platforms/configs don't let
> us have a segment register for guest_base?

Everything non-Linux I think, which for user-mode emulation means bsd-user.

Paolo



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