On Fri, Apr 12, 2019 at 07:12:04PM -0400, John David Anglin wrote: > TLB operations only need to be serialized on machines with the Merced (Stretch) bus. > The only machines in this category are L and N class, and they require a 64-bit PA 2.0 > kernel. On these machines, we use local TLB purges in the tmpalias routines. We don't > need to serialize TLB purges on all other machines. Thus, the lock/unlock code can be > removed when CONFIG_PA20 is not defined. Further, when CONFIG_PA20 is not defined, > alternative patching converts the TLB purges to local purges when PA 2.0 hardware has > been detected. > > Signed-off-by: John David Anglin <dave.anglin@xxxxxxxx> I had this patch running on my C8000 and J5000 for a few days, and haven't encountered any issues. Tested-By: Sven Schnelle <svens@xxxxxxxxxxxxxx> Regards Sven
