From: David Vrabel <david.vrabel@citrix.com>
To: <konrad@kernel.org>, <xen-devel@lists.xenproject.org>,
<david.vrabel@citrix.com>, <boris.ostrovsky@oracle.com>,
<linux-kernel@vger.kernel.org>
Subject: Re: [Xen-devel] [PATCH v2] xen: Introduce 'xen_nopv' to disable PV extensions for HVM guests.
Date: Wed, 9 Jul 2014 13:10:03 +0100 [thread overview]
Message-ID: <53BD311B.2050404@citrix.com> (raw)
In-Reply-To: <1404852745-25187-1-git-send-email-konrad@kernel.org>
On 08/07/14 21:52, konrad@kernel.org wrote:
> From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
>
> By default when CONFIG_XEN and CONFIG_XEN_PVHVM kernels are
> run, they will enable the PV extensions (drivers, interrupts, timers,
> etc) - which is perfect.
If it's "perfect" what's this option for? ;)
I think you mean to say "which is the best option for the majority of
use cases".
> However, in some cases (kexec not fully wokring, benchmarking)
> we want to disable Xen PV extensions. As such introduce the
> 'xen_nopv' parameter that will do it.
"working"
I'm unconvinced about the utility of this option. The resulting kernel
will go like molasses and I'm not sure what the use of being any to
benchmark a configuration no one will use in practice. But it's a small
patch so
Reviewed-by: David Vrabel <david.vrabel@citrix.com>
David
next prev parent reply other threads:[~2014-07-09 12:10 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-08 20:52 [PATCH v2] xen: Introduce 'xen_nopv' to disable PV extensions for HVM guests konrad
2014-07-09 12:10 ` David Vrabel [this message]
2014-07-09 13:55 ` [Xen-devel] " Konrad Rzeszutek Wilk
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=53BD311B.2050404@citrix.com \
--to=david.vrabel@citrix.com \
--cc=boris.ostrovsky@oracle.com \
--cc=konrad@kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=xen-devel@lists.xenproject.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