linux-kernel - [PATCH v2] powerpc: wire up memtest

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Message-Id: <5ccbb0b1ce0a86ef7a77e7b8dbb85c3637bf4628.1538087238.git.christophe.leroy@c-s.fr>
Date:   Fri, 28 Sep 2018 08:57:37 +0000 (UTC)
From:   Christophe Leroy <christophe.leroy@....fr>
To:     Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Michael Ellerman <mpe@...erman.id.au>
Cc:     linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Subject: [PATCH v2] powerpc: wire up memtest

Add call to early_memtest() so that kernel compiled with
CONFIG_MEMTEST really perform memtest at startup when requested
via 'memtest' boot parameter.

Signed-off-by: Christophe Leroy <christophe.leroy@....fr>
---
 v2: moved the test after initmem_init() as PPC64 sets max_low_pfn later than PPC32.

 arch/powerpc/kernel/setup-common.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c
index 93fa0c99681e..9ca9db707bcb 100644
--- a/arch/powerpc/kernel/setup-common.c
+++ b/arch/powerpc/kernel/setup-common.c
@@ -33,6 +33,7 @@
 #include <linux/serial_8250.h>
 #include <linux/percpu.h>
 #include <linux/memblock.h>
+#include <linux/bootmem.h>
 #include <linux/of_platform.h>
 #include <linux/hugetlb.h>
 #include <asm/debugfs.h>
@@ -966,6 +967,8 @@ void __init setup_arch(char **cmdline_p)
 
 	initmem_init();
 
+	early_memtest(min_low_pfn << PAGE_SHIFT, max_low_pfn << PAGE_SHIFT);
+
 #ifdef CONFIG_DUMMY_CONSOLE
 	conswitchp = &dummy_con;
 #endif
-- 
2.13.3