From: Andrew Jones <drjones@redhat.com>
To: "Alex Bennée" <alex.bennee@linaro.org>
Cc: mttcg@greensocs.com, peter.maydell@linaro.org,
"Alex Bennée" <alex@bennee.com>,
claudio.fontana@huawei.com, kvm@vger.kernel.org,
a.spyridakis@virtualopensystems.com, mark.burton@greensocs.com,
a.rigo@virtualopensystems.com, qemu-devel@nongnu.org,
fred.konrad@greensocs.com
Subject: Re: [Qemu-devel] [kvm-unit-tests PATCH v5 09/11] arm: query /dev/kvm for maximum vcpus
Date: Sun, 2 Aug 2015 18:40:16 +0200 [thread overview]
Message-ID: <20150802164016.GC3441@hawk.localdomain> (raw)
In-Reply-To: <20150731191712.GI3680@hawk.localdomain>
On Fri, Jul 31, 2015 at 09:17:12PM +0200, Andrew Jones wrote:
> On Fri, Jul 31, 2015 at 04:53:59PM +0100, Alex Bennée wrote:
> > From: Alex Bennée <alex@bennee.com>
> >
> > The previous $(getconf _NPROCESSORS_CONF) isn't correct as the default
> > maximum VCPU configuration is 4 on arm64 machines which typically have
> > more actual cores.
>
> The kernel should probably bump that up to 8, but that's an aside,
> as it wouldn't resolve the general issue.
>
> For this patch, I don't think we need a C utility as we can probe
> with QEMU, and thus just need a script.
>
> $QEMU -machine virt,accel=kvm -smp 9
> Number of SMP cpus requested (9), exceeds max cpus supported by machine `virt' (8)
>
> The script can live in $root/scripts/, which is a directory recently
> created for standalone test support.
I decided to take a stab at this and came up with
https://github.com/rhdrjones/kvm-unit-tests/commit/336d87338da86a0e7f2018a1e509b606b9a2baa2
Thanks,
drew
next prev parent reply other threads:[~2015-08-02 16:40 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-31 15:53 [Qemu-devel] [kvm-unit-tests PATCH v5 00/11] My current MTTCG tests Alex Bennée
2015-07-31 15:53 ` [Qemu-devel] [kvm-unit-tests PATCH v5 01/11] arm/run: set indentation defaults for emacs Alex Bennée
2015-07-31 15:53 ` [Qemu-devel] [kvm-unit-tests PATCH v5 02/11] README: add some CONTRIBUTING notes Alex Bennée
2015-07-31 15:53 ` [Qemu-devel] [kvm-unit-tests PATCH v5 03/11] configure: emit HOST=$host to config.mak Alex Bennée
2015-07-31 15:53 ` [Qemu-devel] [kvm-unit-tests PATCH v5 04/11] arm/run: introduce usingkvm var and use it Alex Bennée
2015-08-02 16:36 ` Andrew Jones
2015-07-31 15:53 ` [Qemu-devel] [kvm-unit-tests PATCH v5 05/11] lib/printf: support the %u unsigned fmt field Alex Bennée
2015-07-31 18:25 ` Andrew Jones
2015-07-31 15:53 ` [Qemu-devel] [kvm-unit-tests PATCH v5 06/11] lib/arm: add flush_tlb_page mmu function Alex Bennée
2015-07-31 18:35 ` Andrew Jones
2015-07-31 15:53 ` [Qemu-devel] [kvm-unit-tests PATCH v5 07/11] new arm/tlbflush-test: TLB torture test Alex Bennée
2015-07-31 18:51 ` Andrew Jones
2015-07-31 15:53 ` [Qemu-devel] [kvm-unit-tests PATCH v5 08/11] arm/unittests.cfg: add the tlbflush tests Alex Bennée
2015-07-31 18:53 ` Andrew Jones
2015-07-31 15:53 ` [Qemu-devel] [kvm-unit-tests PATCH v5 09/11] arm: query /dev/kvm for maximum vcpus Alex Bennée
2015-07-31 19:17 ` Andrew Jones
2015-08-02 16:40 ` Andrew Jones [this message]
2015-07-31 15:54 ` [Qemu-devel] [kvm-unit-tests PATCH v5 10/11] new: add isaac prng library from CCAN Alex Bennée
2015-07-31 19:22 ` Andrew Jones
2015-07-31 15:54 ` [Qemu-devel] [kvm-unit-tests PATCH v5 11/11] new: arm/barrier-test for memory barriers Alex Bennée
2015-07-31 19:30 ` Andrew Jones
2015-08-03 10:02 ` alvise rigo
2015-08-03 10:30 ` Alex Bennée
2015-08-03 10:34 ` alvise rigo
2015-08-03 16:06 ` Alex Bennée
2015-08-03 16:46 ` alvise rigo
2015-08-04 7:30 ` Alex Bennée
2015-08-02 16:44 ` [Qemu-devel] [kvm-unit-tests PATCH v5 00/11] My current MTTCG tests Andrew Jones
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20150802164016.GC3441@hawk.localdomain \
--to=drjones@redhat.com \
--cc=a.rigo@virtualopensystems.com \
--cc=a.spyridakis@virtualopensystems.com \
--cc=alex.bennee@linaro.org \
--cc=alex@bennee.com \
--cc=claudio.fontana@huawei.com \
--cc=fred.konrad@greensocs.com \
--cc=kvm@vger.kernel.org \
--cc=mark.burton@greensocs.com \
--cc=mttcg@greensocs.com \
--cc=peter.maydell@linaro.org \
--cc=qemu-devel@nongnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).