Re: [Qemu-devel] [PATCH 0/4] Define default CPU at configure time

[Richard Henderson]

On 09/07/2013 02:19 AM, Peter Maydell wrote:
> On 7 September 2013 10:13, Laurent Vivier <address@hidden> wrote:
>> Le 07/09/2013 10:43, Peter Maydell a écrit :
>> In fact, I don't understand why a given CPU id has been chosen to be the
>> default value. I think there is a default value not because this is the
>> best/most used value but because we need a default.
> 
> The default for ARM is "any", which is specifically for linux-user
> and means "enable all possible user-visible instruction set options".
> That means it should be able to run any guest binary OK.
> Some other target CPU types do this, but not all; I think that
> ideally we should convert them to do similarly.

For mips this is impossible.  There are multiple isa extensions that are
mutually exclusive.  But for everyone else that ought to work.


r~