Thread (4 messages) 4 messages, 3 authors, 2021-05-01

Re: [PATCH] powerpc/powernv/memtrace: Fix dcache flushing

From: Aneesh Kumar K.V <hidden>
Date: 2021-04-30 08:04:12

Sandipan Das [off-list ref] writes:
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 __va() conversion.
Reviewed-by: Aneesh Kumar K.V <redacted>
quoted hunk ↗ jump to hunk
Fixes: 2ac02e5ecec0 ("powerpc/mm: Remove dcache flush from memory remove.")
Signed-off-by: Sandipan Das <redacted>
---
 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 71c1262589fe..a31f13814f2e 100644
--- a/arch/powerpc/platforms/powernv/memtrace.c
+++ b/arch/powerpc/platforms/powernv/memtrace.c
@@ -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)__va(PFN_PHYS(start_pfn)),
+				   (unsigned long)__va(PFN_PHYS(start_pfn + nr_pages)),
 				   FLUSH_CHUNK_SIZE);
 }
 
-- 
2.25.1
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