Commit b910fcba authored by Sandipan Das's avatar Sandipan Das Committed by Michael Ellerman
Browse files

powerpc/powernv/memtrace: Fix dcache flushing 



Trace memory is cleared and the corresponding dcache lines
are flushed after allocation. However, this should not be
done using the PFN. This adds the missing conversion to
virtual address.

Fixes: 2ac02e5e ("powerpc/mm: Remove dcache flush from memory remove.")
Signed-off-by: default avatarSandipan Das <sandipan@linux.ibm.com>
Reviewed-by: default avatarAneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210501160254.1179831-1-sandipan@linux.ibm.com
parent 40c75399

arch/powerpc/platforms/powernv/memtrace.c

+2 −2
Original line number Diff line number Diff line
@@ -104,8 +104,8 @@ static void memtrace_clear_range(unsigned long start_pfn, 
	 * Before we go ahead and use this range as cache inhibited range

	 * flush the cache.

	 */

	flush_dcache_range_chunked(PFN_PHYS(start_pfn),

				   PFN_PHYS(start_pfn + nr_pages),

	flush_dcache_range_chunked((unsigned long)pfn_to_kaddr(start_pfn),

				   (unsigned long)pfn_to_kaddr(start_pfn + nr_pages),

				   FLUSH_CHUNK_SIZE);

}