On Thu, 2018-02-15 at 15:49:24 UTC, Vaibhav Jain wrote: > PSL9D doesn't have a data-cache that needs to be flushed before > resetting the card. However when cxl tries to flush data-cache on such > a card, it times-out as PSL_Control register never indicates flush > operation complete due to missing data-cache. This is usually > indicated in the kernel logs with this message: > > "WARNING: cache flush timed out" > > To fix this the patch checks PSL_Debug register CDC-Field(BIT:27) > which indicates the absence of a data-cache and sets a flag > 'no_data_cache' in 'struct cxl_native' to indicate this. When > cxl_data_cache_flush() is called it checks the flag and if set bails > out early without requesting a data-cache flush operation to the PSL. > > Signed-off-by: Vaibhav Jain <vaib...@linux.vnet.ibm.com> > Acked-by: Andrew Donnellan <andrew.donnel...@au1.ibm.com> > Acked-by: Frederic Barrat <fbar...@linux.vnet.ibm.com>
Applied to powerpc next, thanks. https://git.kernel.org/powerpc/c/94322ed8e857e3b2a33cf75118051a cheers
