Re: [kvm-unit-tests PATCH v2 2/3] arm/run: ensure we use processor=host for kvm

From: Christoffer Dall <cdall@linaro.org>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: "Alex Bennée" <alex.bennee@linaro.org>,
	"marc.zyngier@arm.com" <marc.zyngier@arm.com>,
	"Andrew Jones" <drjones@redhat.com>,
	"kvm@vger.kernel.org" <kvm@vger.kernel.org>
Subject: Re: [kvm-unit-tests PATCH v2 2/3] arm/run: ensure we use processor=host for kvm
Date: Fri, 19 May 2017 08:29:11 +0200	[thread overview]
Message-ID: <CAMJs5B_b_NiPv4-8JN0uLsi2zcE2c4tgGL48NebbnTrFUekLZQ@mail.gmail.com> (raw)
In-Reply-To: <461f1654-ed2c-327a-20e0-da59322333d8@redhat.com>

On Thu, May 18, 2017 at 6:03 PM, Paolo Bonzini <pbonzini@redhat.com> wrote:
>
>
> On 18/05/2017 18:02, Alex Bennée wrote:
>> The configure script will happily default to cortex-a15 even when
>> running on a cortex-a7. This runs into problems when running KVM on
>> common dev boards as we should be using the "host" processor.
>>
>> Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
>
> x86 can use different "-cpu" parameters for each test.  Would that make
> sense for ARM?  Can the tests run successfully with cortex-a7 on an A15?
>

For now, we only support same-guest-as-host-cpu configurations with
KVM.  In the future we may add the cross CPU-type support for KVM, and
I suppose we can do this with TCG already.

I would suggest merging this now though, to get kvm-unit-tests working
on the platforms we have available and then add the more complicated
tests when there's an actual need, but it's obviously up to you.

Thanks,
-Christoffer