On Wed, Mar 20, 2019 at 06:49:19AM +0000, Tudor.Ambarus@xxxxxxxxxxxxx wrote: > Mika, > > Would you please add your Acked-by again? It's dropped in v4. Sure. > Looks good for me, below is my R-b. > > Thanks! > > On 03/19/2019 07:18 PM, Sverdlin, Alexander (Nokia - DE/Ulm) wrote: > > External E-Mail > > > > > > From: Alexander Sverdlin <alexander.sverdlin@xxxxxxxxx> > > > > It was observed that reads crossing 4K address boundary are failing. > > > > This limitation is mentioned in Intel documents: > > > > Intel(R) 9 Series Chipset Family Platform Controller Hub (PCH) Datasheet: > > > > "5.26.3 Flash Access > > Program Register Access: > > * Program Register Accesses are not allowed to cross a 4 KB boundary..." > > > > Enhanced Serial Peripheral Interface (eSPI) > > Interface Base Specification (for Client and Server Platforms): > > > > "5.1.4 Address > > For other memory transactions, the address may start or end at any byte > > boundary. However, the address and payload length combination must not > > cross the naturally aligned address boundary of the corresponding Maximum > > Payload Size. It must not cross a 4 KB address boundary." > > > > Avoid this by splitting an operation crossing the boundary into two > > operations. > > > > Cc: stable@xxxxxxxxxxxxxxx > > Reported-by: Romain Porte <romain.porte@xxxxxxxxx> > > Tested-by: Pascal Fabreges <pascal.fabreges@xxxxxxxxx> > > Signed-off-by: Alexander Sverdlin <alexander.sverdlin@xxxxxxxxx> > > Reviewed-by: Tudor Ambarus <tudor.ambarus@xxxxxxxxxxxxx> Acked-by: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx>
