From: Ian Campbell <ian.campbell@citrix.com>
To: Chen Baozi <cbz@baozis.org>
Cc: Chen Baozi <baozich@gmail.com>,
julien.grall@linaro.org, xen-devel@lists.xen.org
Subject: Re: [PATCH] xen/arm64: Avoid sending SGI when kicking secondary cpus with spin_table
Date: Fri, 8 May 2015 17:39:50 +0100 [thread overview]
Message-ID: <1431103190.2660.543.camel@citrix.com> (raw)
In-Reply-To: <1428392032-11551-1-git-send-email-cbz@baozis.org>
On Tue, 2015-04-07 at 15:33 +0800, Chen Baozi wrote:
> From: Chen Baozi <baozich@gmail.com>
>
> On arm64, either firmware or xen's smp_up_cpu gate uses WFE on secondary
> cpus to stand-by when booting. Thus, using SEV is enough for the boot
> cpu to kick other secondaries. Further more, the current implementation
> of cpu_up_send_sgi would pass a NULL cpumask pointer to send_SGI, which
> then lead a data fault on GICv3 send_SGI implementation.
>
> Signed-off-by: Chen Baozi <baozich@gmail.com>
I think we concluded this was correct for arm64, so acked + applied.
prev parent reply other threads:[~2015-05-08 16:39 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-07 7:33 [PATCH] xen/arm64: Avoid sending SGI when kicking secondary cpus with spin_table Chen Baozi
2015-04-08 12:23 ` Julien Grall
2015-04-15 14:57 ` Ian Campbell
2015-04-15 15:56 ` Julien Grall
2015-04-15 16:21 ` Ian Campbell
2015-04-15 17:53 ` Julien Grall
2015-04-15 17:54 ` Julien Grall
2015-05-08 16:38 ` Julien Grall
2015-05-09 12:52 ` Chen Baozi
2015-05-08 16:39 ` Ian Campbell [this message]
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