linux-kernel - [RFC PATCH 3/3] arch: powerpc: adjust fadump alignment to pageblock aligned.

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Message-Id: <20211115193725.737539-5-zi.yan@sent.com>
Date:   Mon, 15 Nov 2021 14:37:25 -0500
From:   Zi Yan <zi.yan@...t.com>
To:     David Hildenbrand <david@...hat.com>, linux-mm@...ck.org
Cc:     linux-kernel@...r.kernel.org,
        Michael Ellerman <mpe@...erman.id.au>,
        Christoph Hellwig <hch@....de>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Robin Murphy <robin.murphy@....com>,
        linuxppc-dev@...ts.ozlabs.org,
        virtualization@...ts.linux-foundation.org,
        iommu@...ts.linux-foundation.org, Zi Yan <ziy@...dia.com>
Subject: [RFC PATCH 3/3] arch: powerpc: adjust fadump alignment to pageblock aligned.

From: Zi Yan <ziy@...dia.com>

CMA only requires pageblock alignment. Change fadump too.

Signed-off-by: Zi Yan <ziy@...dia.com>
---
 arch/powerpc/include/asm/fadump-internal.h | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/arch/powerpc/include/asm/fadump-internal.h b/arch/powerpc/include/asm/fadump-internal.h
index 8d61c8f3fec4..9198f20b6b68 100644
--- a/arch/powerpc/include/asm/fadump-internal.h
+++ b/arch/powerpc/include/asm/fadump-internal.h
@@ -20,9 +20,7 @@
 #define memblock_num_regions(memblock_type)	(memblock.memblock_type.cnt)
 
 /* Alignment per CMA requirement. */
-#define FADUMP_CMA_ALIGNMENT	(PAGE_SIZE <<				\
-				 max_t(unsigned long, MAX_ORDER - 1,	\
-				 pageblock_order))
+#define FADUMP_CMA_ALIGNMENT	(PAGE_SIZE << pageblock_order)
 
 /* FAD commands */
 #define FADUMP_REGISTER			1
-- 
2.33.0