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