From: Ingo Molnar <mingo@elte.hu>
To: Oliver Pinter <oliver.pntr@gmail.com>
Cc: stable@kernel.org, Jack Steiner <steiner@sgi.com>, linux-mm@kvack.org
Subject: Re: [RFC] x86 fix for stable
Date: Sun, 20 Jul 2008 17:24:03 +0200 [thread overview]
Message-ID: <20080720152403.GA8449@elte.hu> (raw)
In-Reply-To: <6101e8c40807200815x68da6731t210b8fbbbe510673@mail.gmail.com>
* Oliver Pinter <oliver.pntr@gmail.com> wrote:
> 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>
correct. It wont apply thought - below is a quick backport to v2.6.26.
Ingo
--------------------->
Author: Ingo Molnar <mingo@elte.hu>
Date: Sun Jul 20 17:22:50 2008 +0200
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>
Conflicts:
arch/x86/mm/init_64.c
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
arch/x86/mm/init_64.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index 819dad9..7b27710 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -579,7 +579,7 @@ unsigned long __init_refok init_memory_mapping(unsigned long start, unsigned lon
else
pud = alloc_low_page(&pud_phys);
- next = start + PGDIR_SIZE;
+ next = (start + PGDIR_SIZE) & PGDIR_MASK;
if (next > end)
next = end;
last_map_addr = phys_pud_init(pud, __pa(start), __pa(next));
--
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prev parent reply other threads:[~2008-07-20 15:24 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-20 15:15 Oliver Pinter
2008-07-20 15:24 ` Ingo Molnar [this message]
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