From: Paolo Bonzini <pbonzini@redhat.com>
To: Davidlohr Bueso <dave@stgolabs.net>, Marc Zyngier <maz@kernel.org>
Cc: kvm@vger.kernel.org, Davidlohr Bueso <dbueso@suse.de>,
peterz@infradead.org, will@kernel.org, bigeasy@linutronix.de,
linux-kernel@vger.kernel.org, rostedt@goodmis.org,
linux-mips@vger.kernel.org, Paul Mackerras <paulus@ozlabs.org>,
joel@joelfernandes.org, tglx@linutronix.de,
torvalds@linux-foundation.org, kvmarm@lists.cs.columbia.edu
Subject: Re: [PATCH v2] kvm: Replace vcpu->swait with rcuwait
Date: Mon, 20 Apr 2020 23:04:37 +0200 [thread overview]
Message-ID: <f7cc83fe-3e91-0057-9af2-26c201456689@redhat.com> (raw)
In-Reply-To: <20200420205641.6sgsllj6pmsnwrvp@linux-p48b>
On 20/04/20 22:56, Davidlohr Bueso wrote:
> On Mon, 20 Apr 2020, Marc Zyngier wrote:
>
>> This looks like a change in the semantics of the tracepoint. Before this
>> change, 'waited' would have been true if the vcpu waited at all. Here,
>> you'd
>> have false if it has been interrupted by a signal, even if the vcpu
>> has waited
>> for a period of time.
>
> Hmm but sleeps are now uninterruptible as we're using TASK_IDLE.
Hold on, does that mean that you can't anymore send a signal in order to
kick a thread out of KVM_RUN? Or am I just misunderstanding?
Paolo
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next prev parent reply other threads:[~2020-04-20 21:04 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20200324044453.15733-1-dave@stgolabs.net>
2020-03-24 4:44 ` [PATCH 3/4] kvm: Replace vcpu->swait with rcuwait Davidlohr Bueso
2020-03-24 12:07 ` kbuild test robot
2020-03-24 16:47 ` kbuild test robot
2020-03-24 17:56 ` Davidlohr Bueso
2020-03-25 17:09 ` Paolo Bonzini
2020-04-14 21:12 ` Davidlohr Bueso
2020-04-15 12:11 ` Paolo Bonzini
2020-04-20 16:41 ` [PATCH v2] " Davidlohr Bueso
2020-04-20 17:12 ` Marc Zyngier
2020-04-20 17:25 ` Paolo Bonzini
2020-04-20 20:56 ` Davidlohr Bueso
2020-04-20 21:04 ` Paolo Bonzini [this message]
2020-04-20 21:50 ` Davidlohr Bueso
2020-04-21 9:43 ` Paolo Bonzini
2020-04-21 18:07 ` Davidlohr Bueso
2020-04-21 19:52 ` Paolo Bonzini
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