From: "Oliver Pinter" <oliver.pntr@gmail.com>
To: stable@kernel.org
Cc: Jack Steiner <steiner@sgi.com>,
linux-mm@kvack.org, Ingo Molnar <mingo@elte.hu>
Subject: [RFC] x86 fix for stable
Date: Sun, 20 Jul 2008 17:15:29 +0200 [thread overview]
Message-ID: <6101e8c40807200815x68da6731t210b8fbbbe510673@mail.gmail.com> (raw)
git id: e22146e610bb7aed63282148740ab1d1b91e1d90
commit e22146e610bb7aed63282148740ab1d1b91e1d90
Author: Jack Steiner <steiner@sgi.com>
Date: Wed Jul 16 11:11:59 2008 -0500
x86: fix kernel_physical_mapping_init() for large x86 systems
Fix bug in kernel_physical_mapping_init() that causes kernel
page table to be built incorrectly for systems with greater
than 512GB of memory.
Signed-off-by: Jack Steiner <steiner@sgi.com>
Cc: linux-mm@kvack.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index 27de243..306049e 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -644,7 +644,7 @@ static unsigned long __init
kernel_physical_mapping_init(unsigned long start,
unsigned long pud_phys;
pud_t *pud;
- next = start + PGDIR_SIZE;
+ next = (start + PGDIR_SIZE) & PGDIR_MASK;
if (next > end)
next = end;
--
Thanks,
Oliver
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next reply other threads:[~2008-07-20 15:15 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-20 15:15 Oliver Pinter [this message]
2008-07-20 15:24 ` Ingo Molnar
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