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From: David Gibson <david@gibson.dropbear.id.au>
To: Cornelia Huck <cohuck@redhat.com>
Cc: Peter Maydell <peter.maydell@linaro.org>,
	Laurent Vivier <lvivier@redhat.com>,
	Paolo Bonzini <pbonzini@redhat.com>,
	Thomas Huth <thuth@redhat.com>,
	"Michael S. Tsirkin" <mst@redhat.com>,
	Richard Henderson <richard.henderson@linaro.org>,
	QEMU Developers <qemu-devel@nongnu.org>
Subject: Re: [Qemu-devel] [PATCH for-2.10] boot-serial-test: prefer tcg accelerator
Date: Wed, 23 Aug 2017 10:29:07 +1000	[thread overview]
Message-ID: <20170823002907.GC5379@umbus.fritz.box> (raw)
In-Reply-To: <20170822134815.77020eb8.cohuck@redhat.com>

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On Tue, Aug 22, 2017 at 01:48:15PM +0200, Cornelia Huck wrote:
> On Tue, 22 Aug 2017 21:20:46 +1000
> David Gibson <david@gibson.dropbear.id.au> wrote:
> 
> > Obviously it's not a thing to fix right now, but I've really been
> > thinking that none of the tests should use this "TCG or KVM" stuff.
> > They should instead be run with *both* options - or at least the ones
> > that are available on the host.
> 
> Having one test as a 'smoke test' that is run for everything available
> sounds like a good idea, and the boot-serial test may be a good
> candidate for that.
> 
> I would not want to run every test with every accelerator, however, as
> this makes 'make check' even slower than it is now. (Although it may be
> useful to be able to trigger 'run everything' tests on some dedicated
> test machines.)

I'd be fine with only running the full matrix on a "make check-harder"
or whatever, target.  But I'd like the option to be there.  Sometimes
(like when preparing a pull request) a slower check is an acceptable
cost for better coverage.

> > That would have caught the bug in the pull request I sent you, and
> > would at least have given you a chance at seeing the problem with
> > boot-serial-test.
> 
> I don't think that would have been caught unless you have the right
> host available... and given that most developers will only have a
> x86_64 machine and whatever other architecture they are working on (if
> any) available, they will run most of 'make check' with tcg only.

Sure, but running make check (amongst other things) on a ppc host is
part of my standard pre-pull-request tests, so it certainly would have
caught it in this case.  Peter Maydell has said he has a ppc host
amongst his test systems.  At the moment it doesn't do KVM so wouldn't
have caught the other problem, but it'd be one step closer to doing
so.

-- 
David Gibson			| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you.  NOT _the_ _other_
				| _way_ _around_!
http://www.ozlabs.org/~dgibson

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  reply	other threads:[~2017-08-23  0:32 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-08-16  8:26 [Qemu-devel] [PATCH for-2.10] boot-serial-test: prefer tcg accelerator Cornelia Huck
2017-08-16  8:28 ` Laurent Vivier
2017-08-16 10:25 ` Thomas Huth
2017-08-16 10:51 ` Paolo Bonzini
2017-08-16 11:18   ` Peter Maydell
2017-08-16 11:46     ` Cornelia Huck
2017-08-22  1:09     ` David Gibson
2017-08-22  5:40       ` Thomas Huth
2017-08-22  8:47       ` Peter Maydell
2017-08-22  8:49         ` Laurent Vivier
2017-08-22  9:35           ` Peter Maydell
2017-08-22 11:20             ` David Gibson
2017-08-22 11:48               ` Cornelia Huck
2017-08-23  0:29                 ` David Gibson [this message]
2017-08-23  7:16                   ` Cornelia Huck
2017-08-23  7:49                     ` [Qemu-devel] make check speed (was: Re: [PATCH for-2.10] boot-serial-test: prefer tcg accelerator) Thomas Huth
2017-08-23  8:01                       ` [Qemu-devel] make check speed Paolo Bonzini
2017-08-23  8:35                         ` Thomas Huth
2017-08-23  8:52                           ` Fam Zheng
2017-08-23  9:09                             ` Fam Zheng
2017-08-23  9:33                           ` Paolo Bonzini
2017-08-24  3:01                             ` David Gibson
2017-08-23 11:51                           ` Lukáš Doktor
2017-08-23 12:01                             ` Thomas Huth
2017-08-23 12:13                               ` Lukáš Doktor
2017-08-24 13:52                                 ` Cleber Rosa
2017-08-23 12:35                             ` Thomas Huth
2017-08-23 12:52                               ` Lukáš Doktor
2017-08-23 12:20                           ` Cornelia Huck
2017-08-24  5:27                             ` Thomas Huth
2017-08-30  8:59                               ` Cornelia Huck
2017-08-30  9:13                                 ` Thomas Huth
2017-08-30 11:52                                   ` Markus Armbruster
2017-08-30 13:56                                     ` Thomas Huth
2017-08-30 14:19                                       ` Markus Armbruster
2017-08-29 16:34                             ` Thomas Huth
2017-08-29 17:13                               ` Thomas Huth
2017-08-16 14:03 ` [Qemu-devel] [PATCH for-2.10] boot-serial-test: prefer tcg accelerator Richard Henderson

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