From: Andrea Bolognani <abologna@redhat.com>
To: Andrew Jones <drjones@redhat.com>, Wei Huang <wei@redhat.com>
Cc: peter.maydell@linaro.org, qemu-arm@nongnu.org,
qemu-devel@nongnu.org, shannon.zhao@linaro.org
Subject: Re: [Qemu-arm] [Qemu-devel] [PATCH V1 1/1] arm64: Add an option to turn on/off host-backed vPMU support
Date: Mon, 15 Aug 2016 18:59:34 +0200 [thread overview]
Message-ID: <1471280374.3003.10.camel@redhat.com> (raw)
In-Reply-To: <20160815100938.vve6hknieytt2ys7@kamzik.localdomain>
On Mon, 2016-08-15 at 12:09 +0200, Andrew Jones wrote:
> Hmm... so now if the user doesn't specify pmu=on (off by default) then we
> silently disable it (I think that's a 2.6 compat issue), and if they do
> specify pmu=on, but KVM doesn't support it, then it's silently disabled,
> which isn't nice. I think QEMU should error out in that case, explaining
> that the user specified incompatible options, i.e. they selected accel=kvm
> and pmu=on, but their KVM version (or cpu model) doesn't support PMU
> emulation.
I agree. Asking qemu to provide a feature that it can't provide
should definitely result in a big fat error.
--
Andrea Bolognani / Red Hat / Virtualization
next prev parent reply other threads:[~2016-08-15 16:59 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-13 5:52 [Qemu-arm] [PATCH V1 1/1] arm64: Add an option to turn on/off host-backed vPMU support Wei Huang
2016-08-15 9:31 ` Andrea Bolognani
2016-08-15 16:12 ` Wei Huang
2016-08-15 17:24 ` Andrea Bolognani
2016-08-15 10:09 ` [Qemu-arm] [Qemu-devel] " Andrew Jones
2016-08-15 16:59 ` Andrea Bolognani [this message]
2016-08-15 21:05 ` Wei Huang
2016-08-15 16:13 ` [Qemu-arm] " Peter Maydell
2016-08-15 21:15 ` [Qemu-devel] " Wei Huang
2016-08-19 17:05 ` [Qemu-arm] " Wei Huang
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=1471280374.3003.10.camel@redhat.com \
--to=abologna@redhat.com \
--cc=drjones@redhat.com \
--cc=peter.maydell@linaro.org \
--cc=qemu-arm@nongnu.org \
--cc=qemu-devel@nongnu.org \
--cc=shannon.zhao@linaro.org \
--cc=wei@redhat.com \
/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).