From: Thomas Gleixner <tglx@linutronix.de>
To: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Ingo Molnar <mingo@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
linux-kernel@vger.kernel.org, linux-api@vger.kernel.org,
Andy Lutomirski <luto@kernel.org>,
"Paul E . McKenney" <paulmck@linux.vnet.ibm.com>,
Boqun Feng <boqun.feng@gmail.com>, Andrew Hunter <ahh@google.com>,
Maged Michael <maged.michael@gmail.com>,
Avi Kivity <avi@scylladb.com>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
Michael Ellerman <mpe@ellerman.id.au>,
Dave Watson <davejwatson@fb.com>,
"H . Peter Anvin" <hpa@zytor.com>,
Andrea Parri <parri.andrea@gmail.com>,
Russell King <linux@armlinux.org.uk>,
Greg Hackmann <ghackmann@google.com>,
Will Deacon <will.deacon@arm.com>,
David Sehr <sehr@google.com>Linus Torvalds <to>
Subject: Re: [PATCH for 4.16 07/10] x86: Introduce sync_core_before_usermode (v2)
Date: Tue, 16 Jan 2018 19:28:07 +0100 (CET) [thread overview]
Message-ID: <alpine.DEB.2.20.1801161927400.2366@nanos> (raw)
In-Reply-To: <20180115191104.12437-8-mathieu.desnoyers@efficios.com>
On Mon, 15 Jan 2018, Mathieu Desnoyers wrote:
> Introduce an architecture function that ensures the current CPU
> issues a core serializing instruction before returning to usermode.
>
> This is needed for the membarrier "sync_core" command.
>
> Architectures defining the sync_core_before_usermode() static inline
> need to select ARCH_HAS_SYNC_CORE_BEFORE_USERMODE.
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
next prev parent reply other threads:[~2018-01-16 18:28 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-15 19:10 [PATCH for 4.16 00/10] membarrier updates for 4.16 Mathieu Desnoyers
2018-01-15 19:10 ` [PATCH for 4.16 01/10] membarrier: selftest: Test private expedited cmd (v2) Mathieu Desnoyers
2018-01-15 19:10 ` [PATCH for 4.16 02/10] powerpc: membarrier: Skip memory barrier in switch_mm() (v7) Mathieu Desnoyers
2018-01-15 19:10 ` [PATCH for 4.16 03/10] membarrier: Document scheduler barrier requirements (v5) Mathieu Desnoyers
2018-01-15 19:10 ` [PATCH for 4.16 04/10] membarrier: provide SHARED_EXPEDITED command (v2) Mathieu Desnoyers
2018-01-16 18:20 ` Thomas Gleixner
2018-01-16 19:02 ` Mathieu Desnoyers
[not found] ` <1577189631.3966.1516129345161.JavaMail.zimbra-vg+e7yoeK/dWk0Htik3J/w@public.gmane.org>
2018-01-16 19:04 ` Thomas Gleixner
2018-01-15 19:11 ` [PATCH for 4.16 06/10] membarrier: Provide core serializing command Mathieu Desnoyers
[not found] ` <20180115191104.12437-1-mathieu.desnoyers-vg+e7yoeK/dWk0Htik3J/w@public.gmane.org>
2018-01-15 19:10 ` [PATCH for 4.16 05/10] membarrier: selftest: Test shared expedited cmd Mathieu Desnoyers
2018-01-15 19:11 ` [PATCH for 4.16 07/10] x86: Introduce sync_core_before_usermode (v2) Mathieu Desnoyers
2018-01-16 18:28 ` Thomas Gleixner [this message]
2018-01-15 19:11 ` [PATCH for 4.16 08/10] membarrier: x86: Provide core serializing command (v3) Mathieu Desnoyers
2018-01-16 18:29 ` Thomas Gleixner
2018-01-16 19:22 ` Mathieu Desnoyers
2018-01-16 20:41 ` Mathieu Desnoyers
2018-01-15 19:11 ` [PATCH for 4.16 09/10] membarrier: arm64: Provide core serializing command Mathieu Desnoyers
2018-01-15 19:11 ` [PATCH for 4.16 10/10] membarrier: selftest: Test private expedited sync core cmd Mathieu Desnoyers
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