From: Christoph Hellwig <hch@infradead.org>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
Steven Rostedt <rostedt@goodmis.org>,
Paul Mackerras <paulus@samba.org>,
Marcelo Tosatti <mtosatti@redhat.com>,
linux-kernel@vger.kernel.org, linux-rt-users@vger.kernel.org,
Luiz Capitulino <lcapitulino@redhat.com>,
Rik van Riel <riel@redhat.com>,
Steven Rostedt <srostedt@redhat.com>,
Thomas Gleixner <tglx@linutronix.de>,
kvm@vger.kernel.org, Paolo Bonzini <pbonzini@redhat.com>
Subject: Re: [patch -rt 1/2] KVM: use simple waitqueue for vcpu->wq
Date: Fri, 7 Aug 2015 09:41:31 -0700 [thread overview]
Message-ID: <20150807164131.GA20239@infradead.org> (raw)
In-Reply-To: <20150807111415.GC18673@twins.programming.kicks-ass.net>
On Fri, Aug 07, 2015 at 01:14:15PM +0200, Peter Zijlstra wrote:
> On that, we cannot convert completions to swait. Because swait wake_all
> must not happen from IRQ context, and complete_all() typically is used
> from just that.
If swait queues aren't useable from IRQ context they will be fairly
useless. What's the problem with making them irq safe?
next prev parent reply other threads:[~2015-08-07 16:41 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-14 17:12 [patch -rt 0/2] use simple waitqueue for kvm vcpu waitqueue (v3) Marcelo Tosatti
2015-01-14 17:12 ` [patch -rt 1/2] KVM: use simple waitqueue for vcpu->wq Marcelo Tosatti
2015-01-14 18:22 ` Rik van Riel
2015-01-16 16:48 ` Steven Rostedt
2015-01-16 16:56 ` Steven Rostedt
2015-01-17 7:57 ` Peter Zijlstra
2015-01-19 14:41 ` Marcelo Tosatti
2015-01-20 5:46 ` Paul Mackerras
2015-01-20 18:16 ` Steven Rostedt
2015-01-21 15:07 ` Peter Zijlstra
2015-02-17 17:44 ` Sebastian Andrzej Siewior
2015-02-18 14:03 ` Peter Zijlstra
2015-02-25 21:02 ` Sebastian Andrzej Siewior
2015-08-07 10:57 ` Peter Zijlstra
2015-08-07 11:14 ` Peter Zijlstra
2015-08-07 11:14 ` Peter Zijlstra
2015-08-07 16:41 ` Christoph Hellwig [this message]
2015-08-07 16:45 ` Peter Zijlstra
2015-08-09 6:39 ` Christoph Hellwig
2015-08-17 20:31 ` Thomas Gleixner
2015-02-27 0:23 ` Marcelo Tosatti
2015-03-05 1:09 ` Marcelo Tosatti
2015-03-05 1:09 ` Marcelo Tosatti
2015-03-05 7:42 ` Sebastian Andrzej Siewior
2015-03-06 13:54 ` Sebastian Andrzej Siewior
2015-01-14 17:12 ` [patch -rt 2/2] KVM: lapic: mark LAPIC timer handler as irqsafe Marcelo Tosatti
2015-01-14 18:23 ` Rik van Riel
2015-01-14 17:35 ` [patch -rt 0/2] use simple waitqueue for kvm vcpu waitqueue (v3) Paolo Bonzini
-- strict thread matches above, loose matches on Subject: below --
2015-04-08 23:33 [patch -rt 0/2] use simple waitqueue for kvm vcpu waitqueue (v5) Marcelo Tosatti
2015-04-08 23:33 ` [patch -rt 1/2] KVM: use simple waitqueue for vcpu->wq Marcelo Tosatti
2015-01-21 20:36 [patch -rt 0/2] use simple waitqueue for kvm vcpu waitqueue (v4) Marcelo Tosatti
2015-01-21 20:36 ` [patch -rt 1/2] KVM: use simple waitqueue for vcpu->wq Marcelo Tosatti
2014-11-25 17:21 [patch -rt 0/2] use simple waitqueue for kvm vcpu waitqueue (v2) Marcelo Tosatti
2014-11-25 17:21 ` [patch -rt 1/2] KVM: use simple waitqueue for vcpu->wq Marcelo Tosatti
2014-11-25 18:57 ` Rik van Riel
2014-11-25 19:08 ` Rik van Riel
2014-11-25 19:30 ` Marcelo Tosatti
2014-11-25 20:23 ` Thomas Gleixner
2014-11-25 16:45 [patch -rt 0/2] use simple waitqueue for kvm vcpu waitqueue Marcelo Tosatti
2014-11-25 16:45 ` [patch -rt 1/2] KVM: use simple waitqueue for vcpu->wq Marcelo Tosatti
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