Messages in this thread |  | | Subject | Re: [PATCH 6/7] xen/evtch: use smp barriers for user event ring | From | Jan Beulich <> | Date | Mon, 8 Feb 2021 10:50:11 +0100 |
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On 08.02.2021 10:44, Andrew Cooper wrote: > On 06/02/2021 10:49, 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@citrix.com> >> Signed-off-by: Juergen Gross <jgross@suse.com> > > These need to be virt_* to not break in UP builds (on non-x86).
Initially I though so, too, but isn't the sole vCPU of such a VM getting re-scheduled to a different pCPU in the hypervisor an implied barrier anyway?
Jan
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