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Re: [Qemu-devel] qemu on 2.6.0-rc1

From: Fabrice Bellard
Subject: Re: [Qemu-devel] qemu on 2.6.0-rc1
Date: Tue, 06 Jan 2004 22:48:54 +0100
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4) Gecko/20030624

It seems I need to update the documentation :-)

Did you try to submit the non QEMU specific patches to Linus ? I think it is dangerous to leave harcoded constants in somes parts of the kernel.

BTW, in the current CVS, qemu-fast is about 2.3 times faster as the previous version (still 9 times slower than native on a P2 500 MHz on a typical 'gcc -pipe' compilation task which involves a lot of task switches).

I am planning simple x86 host specific optimisations to get closer to native performance... and SMP is getting closer now with my last changes.


Rusty Russell wrote:
In message <address@hidden> you write:


I try to run qemu-fast on Linux kernel 2.6.0-rc1. I could not find
the things which I should change in the documentation:

Here's my patch, included below.  2.6.0 requires the vsyscall area to
 move as well.

Sure, you can run the non-fast qemu, but it's MUCH slower.

Andrew?   This patch also has the benifit of moving all the constants
to one place, as well as adding a CONFIG_QEMU option. I use it for testing all the time.

Thanks, Rusty.

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