Re: [Qemu-devel] [PATCH] KVM: Use -cpu host as default on x86

[Alexander Graf]

On 13.10.2011, at 17:24, 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 KVM can support".
> 
> Fortunately we already have such a CPU type. It's called "host". All we
> need to do is to select it by default when not getting a -cpu passed in.
> 
> This fixes a lot of subtile breakage in the GNU toolchain (libgmp) which
> hicks up on QEMU's non-existent CPU models.

Ping?


Alex