Re: [Qemu-devel] [PATCH 01/15] configure: add the disable-tcg option

[Thomas Huth <thuth@redhat.com>]

On 22.06.2017 08:22, Paolo Bonzini wrote:
> 
>> On 21.06.2017 12:19, Yang Zhong wrote:
>>> Add the disable-tcg option into configure and echo CONFIG_TCG=y into
>>> $config_target_mak. The default tcg is enabled for all build. If tcg
>>> is disabled in the build, only i386|x86_64 softmmu option can be disabled,
>>> other softmmu of tagets and users build defaultly enabled the tcg.
>> Why do you want to limit this disablement to x86 only? There are also
>> other architectures that support KVM (ARM, PPC, MIPS), so disabling TCG
>> might be possible there, too. So I think it might be better to check
>> whether KVM is possible instead.
> 
> You need to be careful and not use any helper from e.g. KVM or migration
> code.  So I would be very surprised if any other architecture compiles
> with --disable-tcg.

OK, fair, but we finally might want to get there, so I think we should
allow the parameter in the configure script for other architectures,
too, and then fix the bugs once we can try it out.

 Thomas