From: Shaohua Li <shaohua.li@intel.com>
To: lkml <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Ingo Molnar <mingo@redhat.com>
Subject: [patch]x86: arch_add_memory round up address
Date: Thu, 09 Oct 2008 13:31:30 +0800 [thread overview]
Message-ID: <1223530290.30941.9.camel@sli10-desk.sh.intel.com> (raw)
Round up address to a page, otherwise the last page isn't mapped.
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
---
arch/x86/mm/init_64.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
Index: linux/arch/x86/mm/init_64.c
===================================================================
--- linux.orig/arch/x86/mm/init_64.c 2008-10-09 11:42:33.000000000 +0800
+++ linux/arch/x86/mm/init_64.c 2008-10-09 11:43:22.000000000 +0800
@@ -721,7 +721,8 @@ int arch_add_memory(int nid, u64 start,
unsigned long nr_pages = size >> PAGE_SHIFT;
int ret;
- last_mapped_pfn = init_memory_mapping(start, start + size-1);
+ last_mapped_pfn = init_memory_mapping(start,
+ round_up(start + size-1, PAGE_SIZE));
if (last_mapped_pfn > max_pfn_mapped)
max_pfn_mapped = last_mapped_pfn;
next reply other threads:[~2008-10-09 5:31 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-09 5:31 Shaohua Li [this message]
2008-10-09 6:04 ` Yinghai Lu
2008-10-09 6:08 ` Shaohua Li
2008-10-09 6:22 ` Yinghai Lu
2008-10-09 6:28 ` Shaohua Li
2008-10-09 6:40 ` Yinghai Lu
2008-10-09 7:06 ` Shaohua Li
2008-10-14 5:16 ` Yasunori Goto
2008-10-14 7:30 ` Shaohua Li
2008-10-14 17:09 ` Yinghai Lu
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