Re: [PATCH v3 8/8] xen/evtchn: use READ/WRITE_ONCE() for accessing ring indices

On 2/19/21 10:40 AM, Juergen Gross wrote: > For avoiding read- and write-tearing by the compiler use READ_ONCE() > and WRITE_ONCE() for accessing the ring indices in evtchn.c. > > Signed-off-by: Juergen Gross Reviewed-by: Boris Ostrovsky

[PATCH v3 8/8] xen/evtchn: use READ/WRITE_ONCE() for accessing ring indices

For avoiding read- and write-tearing by the compiler use READ_ONCE() and WRITE_ONCE() for accessing the ring indices in evtchn.c. Signed-off-by: Juergen Gross --- V2: - modify all accesses (Julien Grall) V3: - fix incrementing producer index (Ross Lagerwall) --- drivers/xen/evtchn.c | 25