From: James Morse <james.morse@arm.com>
To: Mark Rutland <mark.rutland@arm.com>
Cc: Yury Norov <ynorov@caviumnetworks.com>,
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
Will Deacon <will.deacon@arm.com>,
Chris Metcalf <cmetcalf@mellanox.com>,
Christopher Lameter <cl@linux.com>,
Russell King - ARM Linux <linux@armlinux.org.uk>,
Steven Rostedt <rostedt@goodmis.org>,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Pekka Enberg <penberg@kernel.org>,
David Rientjes <rientjes@google.com>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>,
Andrew Morton <akpm@linux-foundation.org>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
Michael Ellerman <mpe@ellerman.id.au>,
Alexey Klimov <klimov.linux@gmail.com>,
linux-arm-kernel@lists.infradead.org,
linuxppc-dev@lists.ozlabs.org, kvm-ppc@vger.kernel.org,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/5] arm64: entry: isb in el1_irq
Date: Fri, 6 Apr 2018 18:30:50 +0100 [thread overview]
Message-ID: <1ef13053-c3eb-deea-a4cc-67723fdf47f8@arm.com> (raw)
In-Reply-To: <20180406172211.r42reit2bnpocab2@lakrids.cambridge.arm.com>
Hi Mark,
On 06/04/18 18:22, Mark Rutland wrote:
> Digging a bit, I also thing that our ct_user_exit and ct_user_enter
> usage is on dodgy ground today.
[...]
> I think similar applies to SDEI; we don't negotiate with RCU prior to
> invoking handlers, which might need RCU.
The arch code's __sdei_handler() calls nmi_enter() -> rcu_nmi_enter(), which
does a rcu_dynticks_eqs_exit().
Thanks,
James
next prev parent reply other threads:[~2018-04-06 17:33 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-05 17:17 [PATCH v2 0/2] smp: don't kick CPUs running idle or nohz_full tasks Yury Norov
2018-04-05 17:17 ` [PATCH 1/5] arm64: entry: isb in el1_irq Yury Norov
2018-04-06 10:02 ` James Morse
2018-04-06 16:54 ` Yury Norov
2018-04-06 17:22 ` Mark Rutland
2018-04-06 17:30 ` James Morse [this message]
2018-04-06 17:34 ` Mark Rutland
2018-04-06 17:50 ` Mark Rutland
2018-04-06 10:57 ` Mark Rutland
2018-04-05 17:17 ` [PATCH 2/5] arm64: entry: introduce restore_syscall_args macro Yury Norov
2018-04-05 17:17 ` [PATCH 3/5] arm64: early ISB at exit from extended quiescent state Yury Norov
2018-04-06 10:06 ` James Morse
2018-04-06 11:07 ` Mark Rutland
2018-04-05 17:17 ` [PATCH 4/5] rcu: arm64: add rcu_dynticks_eqs_exit_sync() Yury Norov
2018-04-05 17:18 ` [PATCH 5/5] smp: Lazy synchronization for EQS CPUs in kick_all_cpus_sync() Yury Norov
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=1ef13053-c3eb-deea-a4cc-67723fdf47f8@arm.com \
--to=james.morse@arm.com \
--cc=akpm@linux-foundation.org \
--cc=benh@kernel.crashing.org \
--cc=catalin.marinas@arm.com \
--cc=cl@linux.com \
--cc=cmetcalf@mellanox.com \
--cc=iamjoonsoo.kim@lge.com \
--cc=klimov.linux@gmail.com \
--cc=kvm-ppc@vger.kernel.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=linux@armlinux.org.uk \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=mark.rutland@arm.com \
--cc=mathieu.desnoyers@efficios.com \
--cc=mpe@ellerman.id.au \
--cc=paulmck@linux.vnet.ibm.com \
--cc=paulus@samba.org \
--cc=penberg@kernel.org \
--cc=rientjes@google.com \
--cc=rostedt@goodmis.org \
--cc=will.deacon@arm.com \
--cc=ynorov@caviumnetworks.com \
/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