From: Jan Beulich <jbeulich@suse.com>
To: Juergen Gross <jgross@suse.com>
Cc: "Stefano Stabellini" <sstabellini@kernel.org>,
"Julien Grall" <julien@xen.org>, "Wei Liu" <wl@xen.org>,
"Andrew Cooper" <andrew.cooper3@citrix.com>,
xen-devel@lists.xenproject.org,
"Volodymyr Babchuk" <Volodymyr_Babchuk@epam.com>,
"Roger Pau Monné" <roger.pau@citrix.com>
Subject: Re: [Xen-devel] [PATCH v7 1/5] xen: introduce smp_mb__[after|before]_atomic() barriers
Date: Wed, 25 Mar 2020 14:17:20 +0100 [thread overview]
Message-ID: <fcc178d6-422b-a295-86fe-906ff7d19828@suse.com> (raw)
In-Reply-To: <20200325105511.20882-2-jgross@suse.com>
On 25.03.2020 11:55, Juergen Gross wrote:
> When using atomic variables for synchronization barriers are needed
> to ensure proper data serialization. Introduce smp_mb__before_atomic()
> and smp_mb__after_atomic() as in the Linux kernel for that purpose.
>
> Use the same definitions as in the Linux kernel.
>
> Suggested-by: Jan Beulich <jbeulich@suse.com>
> Signed-off-by: Juergen Gross <jgross@suse.com>
Acked-by: Jan Beulich <jbeulich@suse.com>
next prev parent reply other threads:[~2020-03-25 13:18 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-25 10:55 [Xen-devel] [PATCH v7 0/5] xen/rcu: let rcu work better with core scheduling Juergen Gross
2020-03-25 10:55 ` [Xen-devel] [PATCH v7 1/5] xen: introduce smp_mb__[after|before]_atomic() barriers Juergen Gross
2020-03-25 13:17 ` Jan Beulich [this message]
2020-03-25 16:20 ` Julien Grall
2020-03-25 10:55 ` [Xen-devel] [PATCH v7 2/5] xen/rcu: don't use stop_machine_run() for rcu_barrier() Juergen Gross
2020-03-25 13:19 ` Jan Beulich
2020-03-25 16:13 ` Julien Grall
2020-03-26 6:58 ` Jan Beulich
2020-03-26 7:24 ` Jürgen Groß
2020-03-26 8:49 ` Jan Beulich
2020-03-26 8:50 ` Jürgen Groß
2020-03-26 9:14 ` Julien Grall
2020-03-25 10:55 ` [Xen-devel] [PATCH v7 3/5] xen: don't process rcu callbacks when holding a rcu_read_lock() Juergen Gross
2020-03-25 10:55 ` [Xen-devel] [PATCH v7 4/5] xen/rcu: add assertions to debug build Juergen Gross
2020-03-25 10:55 ` [Xen-devel] [PATCH v7 5/5] xen/rcu: add per-lock counter in debug builds Juergen Gross
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