linux-kernel - [PATCH 07/14] MIPS: memblock: Mark present sparsemem sections

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Message-Id: <20180117222312.14763-8-fancer.lancer@gmail.com>
Date:   Thu, 18 Jan 2018 01:23:05 +0300
From:   Serge Semin <fancer.lancer@...il.com>
To:     ralf@...ux-mips.org, miodrag.dinic@...s.com, jhogan@...nel.org,
        goran.ferenc@...s.com, david.daney@...ium.com,
        paul.gortmaker@...driver.com, paul.burton@...s.com,
        alex.belits@...ium.com, Steven.Hill@...ium.com
Cc:     alexander.sverdlin@...ia.com, matt.redfearn@...s.com,
        kumba@...too.org, marcin.nowakowski@...s.com, James.hogan@...s.com,
        Peter.Wotton@...s.com, Sergey.Semin@...latforms.ru,
        linux-mips@...ux-mips.org, linux-kernel@...r.kernel.org,
        Serge Semin <fancer.lancer@...il.com>
Subject: [PATCH 07/14] MIPS: memblock: Mark present sparsemem sections

If sparsemem is activated all sections with present pages must
be accordingly marked after memblock is fully initialized.

Signed-off-by: Serge Semin <fancer.lancer@...il.com>
---
 arch/mips/kernel/setup.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
index b121fa702..6df1eaf38 100644
--- a/arch/mips/kernel/setup.c
+++ b/arch/mips/kernel/setup.c
@@ -778,7 +778,7 @@ static void __init request_crashkernel(struct resource *res)
 
 static void __init arch_mem_init(char **cmdline_p)
 {
-	struct memblock_region *reg;
+	struct memblock_region *reg __maybe_unused;
 	extern void plat_mem_setup(void);
 
 	/* call board setup routine */
@@ -860,6 +860,11 @@ static void __init arch_mem_init(char **cmdline_p)
 				 crashk_res.end - crashk_res.start + 1);
 #endif
 	device_tree_init();
+#ifdef CONFIG_SPARSEMEM
+	for_each_memblock(memory, reg)
+		memory_present(0, memblock_region_memory_base_pfn(reg),
+				memblock_region_memory_end_pfn(reg));
+#endif /* CONFIG_SPARSEMEM */
 	sparse_init();
 	plat_swiotlb_setup();
 
-- 
2.12.0