From: Sandipan Das sandipan@linux.ibm.com
[ Upstream commit b910fcbada9721c21f1d59ab59e07e8e354c23cc ]
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: 2ac02e5ecec0 ("powerpc/mm: Remove dcache flush from memory remove.") Signed-off-by: Sandipan Das sandipan@linux.ibm.com Reviewed-by: Aneesh Kumar K.V aneesh.kumar@linux.ibm.com Signed-off-by: Michael Ellerman mpe@ellerman.id.au Link: https://lore.kernel.org/r/20210501160254.1179831-1-sandipan@linux.ibm.com Signed-off-by: Sasha Levin sashal@kernel.org --- arch/powerpc/platforms/powernv/memtrace.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/platforms/powernv/memtrace.c b/arch/powerpc/platforms/powernv/memtrace.c index 019669eb21d2..4ab7c3ef5826 100644 --- a/arch/powerpc/platforms/powernv/memtrace.c +++ b/arch/powerpc/platforms/powernv/memtrace.c @@ -88,8 +88,8 @@ 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); }