Re: [PATCH 6/7] xen/evtch: use smp barriers for user event ring

From: Jürgen Groß
Date: Mon Feb 08 2021 - 04:54:45 EST


On 08.02.21 10:38, Jan Beulich wrote:
On 06.02.2021 11:49, Juergen Gross wrote:
The ring buffer for user events is used in the local system only, so
smp barriers are fine for ensuring consistency.

Reported-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
Signed-off-by: Juergen Gross <jgross@xxxxxxxx>

Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>

Albeit I think "local system" is at least ambiguous (physical
machine? VM?). How about something like "is local to the given
kernel instance"?

Yes.


Juergen

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