linux-kernel - [PATCH] MIPS: fix memory setup for platforms with PHY

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Date:   Tue, 26 Feb 2019 15:06:32 +0100
From:   Thomas Bogendoerfer <tbogendoerfer@...e.de>
To:     Ralf Baechle <ralf@...ux-mips.org>,
        Paul Burton <paul.burton@...s.com>,
        James Hogan <jhogan@...nel.org>, linux-mips@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Mike Rapoport <rppt@...ux.vnet.ibm.com>
Subject: [PATCH] MIPS: fix memory setup for platforms with PHY_OFFSET != 0

For platforms, which use a PHY_OFFSET != 0, symbol _end also
contains that offset. So when calling memblock_reserve() for
reserving kernel and initrd the size argument needs to be
adjusted.

Fixes: bcec54bf3118 ("mips: switch to NO_BOOTMEM")
Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@...e.de>
---
 arch/mips/kernel/setup.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
index 8c6c48ed786a..d2e5a5ad0e6f 100644
--- a/arch/mips/kernel/setup.c
+++ b/arch/mips/kernel/setup.c
@@ -384,7 +384,8 @@ static void __init bootmem_init(void)
 	init_initrd();
 	reserved_end = (unsigned long) PFN_UP(__pa_symbol(&_end));
 
-	memblock_reserve(PHYS_OFFSET, reserved_end << PAGE_SHIFT);
+	memblock_reserve(PHYS_OFFSET,
+			 (reserved_end << PAGE_SHIFT) - PHYS_OFFSET);
 
 	/*
 	 * max_low_pfn is not a number of pages. The number of pages
-- 
2.13.7