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Re: [Qemu-devel] [PATCH 0/12] cpuid: cleanup and some enhancements

From: Amit Shah
Subject: Re: [Qemu-devel] [PATCH 0/12] cpuid: cleanup and some enhancements
Date: Fri, 11 Sep 2009 13:25:35 +0530
User-agent: Mutt/1.5.19 (2009-01-05)

On (Fri) Sep 11 2009 [00:20:45], Andre Przywara wrote:
> Hi,
> the following patchset cleans up CPUID bit handling and adds some smaller
> features.
> The most prominent change is to move all CPUID related functions to a
> separate file. About 40% of helper.c was actually CPUID related, so say
> hello to cpuid.c. While at it, I fixed some formatting issues. (Patch 1-5)
> Patch 6 & 7 add the CPUID feature flag names to the output of -cpu ?.
> Patch 8 & 9 simplify some code.
> Patch 10 allows more CPUID leafs to be propagated to guests when -cpu host
> is used, this should now reflect the host CPU's cache size.
> Patch 11 adds a trimming feature (similar to KVM) to QEMU/TCG. The goal
> is to describe CPU models more precisely by reflecting the feature bits of
> the real hardware. Features that QEMU does not support are then masked.
> If we add features to QEMU, we only need to adjust it in one location.
> I will send a patch fixing the CPU models later.
> Patch 12 adjusts the size of the L2 cache described by leaf 4 to a more
> conservative value of one megabyte. This prevents guests assuming too large
> caches if they use optimized algorithms.
> Please review, comment and apply!

Looks like a good series!

> Thanks and Regards,
> Andre.


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