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Date: Thu, 22 Jun 2017 02:22:55 -0400 (EDT)
From: Paolo Bonzini <pbonzini@redhat.com>
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Subject: Re: [Qemu-devel] [PATCH 01/15] configure: add the disable-tcg option
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To: Thomas Huth <thuth@redhat.com>
Cc: Yang Zhong <yang.zhong@intel.com>, anthony xu <anthony.xu@intel.com>, qemu-devel@nongnu.org, a rigo <a.rigo@virtualopensystems.com>


> 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.

Paolo