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Re: [Qemu-devel] [PATCH v2 2/3] KVM: Use -cpu best as default on x86

From: Avi Kivity
Subject: Re: [Qemu-devel] [PATCH v2 2/3] KVM: Use -cpu best as default on x86
Date: Mon, 02 Jul 2012 17:27:04 +0300
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:13.0) Gecko/20120605 Thunderbird/13.0

On 06/26/2012 07:39 PM, Alexander Graf wrote:
> When running QEMU without -cpu parameter, the user usually wants a sane
> default. So far, we're using the qemu64/qemu32 CPU type, which basically
> means "the maximum TCG can emulate".
> That's a really good default when using TCG, but when running with KVM
> we much rather want a default saying "the maximum performance I can get".
> Fortunately we just added an option that gives us the best performance
> while still staying safe on the testability side of things: -cpu best.
> So all we need to do is make -cpu best the default when the user doesn't
> explicitly specify a CPU type.
> This fixes a lot of subtile breakage in the GNU toolchain (libgmp) which


> hicks up on QEMU's non-existent CPU models.
> This patch also adds a new pc-1.2 machine type to stay backwards compatible
> with older versions of QEMU.

error compiling committee.c: too many arguments to function

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