From: Steven Rostedt <rostedt@goodmis.org>
To: Marc Zyngier <marc.zyngier@arm.com>
Cc: linux-rt-users <linux-rt-users@vger.kernel.org>,
julia@ni.com, Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
Julien Grall <julien.grall@arm.com>,
kvmarm@lists.cs.columbia.edu,
linux-arm-kernel <linux-arm-kernel@lists.infradead.org>
Subject: Re: KVM Arm Device passthrough and linux-rt
Date: Tue, 4 Jun 2019 11:04:54 -0400 [thread overview]
Message-ID: <20190604110454.2b99ee6e@oasis.local.home> (raw)
In-Reply-To: <f2fbc06b-373f-ee2a-b111-ea40848dc1c5@arm.com>
On Tue, 4 Jun 2019 14:53:26 +0100
Marc Zyngier <marc.zyngier@arm.com> wrote:
> That's to prevent the injection of an interrupt firing on the same CPU
> while we're saving the corresponding vcpu interrupt context, among other
> things (the whole guest exit path runs with interrupt disabled in order
> to avoid this kind of thing).
Can't we use a per_cpu local lock for this?
-- Steve
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next prev parent reply other threads:[~2019-06-04 15:05 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-04 12:58 KVM Arm Device passthrough and linux-rt Julien Grall
2019-06-04 13:16 ` Steven Rostedt
2019-06-04 13:53 ` Marc Zyngier
2019-06-04 14:28 ` Marc Zyngier
2019-06-04 15:04 ` Steven Rostedt [this message]
2019-06-04 13:50 ` Sebastian Andrzej Siewior
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