Messages in this thread | | | Subject | Re: [PATCH v3 2/8] xen/events: don't unmask an event channel when an eoi is pending | From | Julien Grall <> | Date | Sat, 20 Feb 2021 12:10:28 +0000 |
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Hi Juergen,
On 19/02/2021 15:40, Juergen Gross wrote: > An event channel should be kept masked when an eoi is pending for it. > When being migrated to another cpu it might be unmasked, though. > > In order to avoid this keep three different flags for each event channel > to be able to distinguish "normal" masking/unmasking from eoi related > masking/unmasking and temporary masking. The event channel should only > be able to generate an interrupt if all flags are cleared. > > Cc: stable@vger.kernel.org > Fixes: 54c9de89895e0a36047 ("xen/events: add a new late EOI evtchn framework") > Reported-by: Julien Grall <julien@xen.org> > Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Julien Grall <jgrall@amazon.com>
Cheers,
-- Julien Grall
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