From: Yinghai Lu <yhlu.kernel@gmail.com>
To: Ingo Molnar <mingo@elte.hu>, Thomas Gleixner <tglx@linutronix.de>,
"H. Peter Anvin" <hpa@zytor.com>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: [PATCH] x86: fix e820_update_range size when overlapping
Date: Tue, 24 Jun 2008 14:55:32 -0700 [thread overview]
Message-ID: <200806241455.33199.yhlu.kernel@gmail.com> (raw)
before that we relay on sanitize_e820_map to remove the overlap.
but e820_update_range(,,E820_RESERVED, E820_RAM) will not work
this patch fix that
who is going to use this?
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
index 512f779..15b4393 100644
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -425,6 +425,11 @@ u64 __init e820_update_range(u64 start, u64 size, unsigned old_type,
e820_add_region(final_start, final_end - final_start,
new_type);
real_updated_size += final_end - final_start;
+
+ ei->size -= final_end - final_start;
+ if (ei->addr < final_start)
+ continue;
+ ei->addr = final_end;
}
return real_updated_size;
}
next reply other threads:[~2008-06-24 21:59 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-24 21:55 Yinghai Lu [this message]
2008-06-24 21:56 ` [PATCH] x86: get max_pfn_mapped in init_memory_mapping Yinghai Lu
2008-06-24 21:57 ` [PATCH] x86: add table_top check for alloc_low_page in 64 bit Yinghai Lu
2008-06-24 21:58 ` [PATCH] x86: change size if e820_update/remove_range Yinghai Lu
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