From: One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Juergen Gross <jgross@suse.com>,
x86@kernel.org, jdelvare@suse.com, hpa@zytor.com,
linux-kernel@vger.kernel.org, mingo@redhat.com,
david.vrabel@citrix.com, Douglas_Warzecha@dell.com,
pali.rohar@gmail.com, xen-devel@lists.xenproject.org,
boris.ostrovsky@oracle.com, tglx@linutronix.de,
linux@roeck-us.net
Subject: Re: [PATCH 0/6] Support calling functions on dedicated physical cpu
Date: Fri, 11 Mar 2016 13:15:04 +0000 [thread overview]
Message-ID: <20160311131504.109cb244@lxorguk.ukuu.org.uk> (raw)
In-Reply-To: <20160311122514.GA6344@twins.programming.kicks-ass.net>
On Fri, 11 Mar 2016 13:25:14 +0100
Peter Zijlstra <peterz@infradead.org> wrote:
> On Fri, Mar 11, 2016 at 12:59:28PM +0100, Juergen Gross wrote:
> > Some hardware (e.g. Dell Studio laptops) require special functions to
> > be called on physical cpu 0 in order to avoid occasional hangs. When
> > running as dom0 under Xen this could be achieved only via special boot
> > parameters (vcpu pinning) limiting the hypervisor in it's scheduling
> > decisions.
>
> So instead of telling Dell to get their act together and fix their damn
> firmware, we're going to add the most horrid gunk to the kernel? How
> does that make sense?
It's been normal forever. The convention with a lot of older BIOS crap
was always that it should be called on the boot CPU (APM. PnPBIOS etc).
It's a stretch pre-EFI to even call it a "bug"
Alan
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel
next prev parent reply other threads:[~2016-03-11 13:16 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1457697574-6710-1-git-send-email-jgross@suse.com>
2016-03-11 11:59 ` [PATCH 1/6] xen: sync xen header Juergen Gross
2016-03-11 11:59 ` [PATCH 2/6] sched: add function to execute a function synchronously on a physical cpu Juergen Gross
2016-03-11 11:59 ` [PATCH 3/6] dcdbas: make use of call_sync_on_phys_cpu() Juergen Gross
2016-03-11 11:59 ` [PATCH 4/6] hwmon: use call_sync_on_phys_cpu() for dell-smm i8k Juergen Gross
2016-03-11 11:59 ` [PATCH 5/6] virt, sched: add cpu pinning to call_sync_on_phys_cpu() Juergen Gross
2016-03-11 11:59 ` [PATCH 6/6] xen: add xen_pin_vcpu() to support calling functions on a dedicated pcpu Juergen Gross
[not found] ` <1457697574-6710-3-git-send-email-jgross@suse.com>
2016-03-11 12:19 ` [PATCH 2/6] sched: add function to execute a function synchronously on a physical cpu Peter Zijlstra
[not found] ` <20160311121950.GZ6344@twins.programming.kicks-ass.net>
2016-03-11 12:42 ` Peter Zijlstra
2016-03-11 12:43 ` Juergen Gross
[not found] ` <56E2BD89.4020400@suse.com>
2016-03-11 12:45 ` Peter Zijlstra
[not found] ` <20160311124238.GN6375@twins.programming.kicks-ass.net>
2016-03-11 12:48 ` Juergen Gross
[not found] ` <56E2BE8C.9030309@suse.com>
2016-03-11 12:57 ` Peter Zijlstra
[not found] ` <20160311125706.GC6344@twins.programming.kicks-ass.net>
2016-03-11 13:07 ` Juergen Gross
2016-03-11 12:25 ` [PATCH 0/6] Support calling functions on dedicated " Peter Zijlstra
[not found] ` <20160311122514.GA6344@twins.programming.kicks-ass.net>
2016-03-11 12:28 ` Pali Rohár
2016-03-11 13:15 ` One Thousand Gnomes [this message]
2016-03-11 13:19 ` Peter Zijlstra
2016-03-11 11:59 Juergen Gross
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=20160311131504.109cb244@lxorguk.ukuu.org.uk \
--to=gnomes@lxorguk.ukuu.org.uk \
--cc=Douglas_Warzecha@dell.com \
--cc=boris.ostrovsky@oracle.com \
--cc=david.vrabel@citrix.com \
--cc=hpa@zytor.com \
--cc=jdelvare@suse.com \
--cc=jgross@suse.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux@roeck-us.net \
--cc=mingo@redhat.com \
--cc=pali.rohar@gmail.com \
--cc=peterz@infradead.org \
--cc=tglx@linutronix.de \
--cc=x86@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;
as well as URLs for NNTP newsgroup(s).