From: "Pali Rohár" <pali.rohar@gmail.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Juergen Gross <jgross@suse.com>,
jdelvare@suse.com, x86@kernel.org, linux-kernel@vger.kernel.org,
mingo@redhat.com, david.vrabel@citrix.com,
Douglas_Warzecha@dell.com, hpa@zytor.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 13:28:10 +0100 [thread overview]
Message-ID: <20160311122810.GE8413__20360.3035574362$1457699411$gmane$org@pali> (raw)
In-Reply-To: <20160311122514.GA6344@twins.programming.kicks-ass.net>
On Friday 11 March 2016 13:25:14 Peter Zijlstra 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?
Hi Peter! That problem is for old laptops and I doubt that Dell would
fix and distribute patches for 5-15 years old laptops...
--
Pali Rohár
pali.rohar@gmail.com
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next prev parent reply other threads:[~2016-03-11 12:28 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 [this message]
2016-03-11 13:15 ` One Thousand Gnomes
2016-03-11 13:19 ` Peter Zijlstra
2016-03-11 11:59 Juergen Gross
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