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Message-Id: <1214395342-20375-2-git-send-email-bwalle@suse.de> Date: Wed, 25 Jun 2008 14:02:20 +0200 From: Bernhard Walle <bwalle@...e.de> To: x86@...nel.org Cc: linux-kernel@...r.kernel.org, vgoyal@...hat.com, kexec@...ts.infradead.org, yhlu.kernel@...il.com, Bernhard Walle <bwalle@...e.de> Subject: [PATCH 1/3] e820_update_range(): Strip size of original region This patch fixes a bug in e820_update_range(): Previously, if a region was partially covered, then e820_update_range() only added a new E820 range but didn't update the end/size of the previous range. That lead to duplicate covering of a region. Patch tested on i386 and x86-64 with patch that uses e820_update_range() to limit the E820 map when "mem" parameter is specified on the command line. Signed-off-by: Bernhard Walle <bwalle@...e.de> --- arch/x86/kernel/e820.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c index e285ea3..e466073 100644 --- a/arch/x86/kernel/e820.c +++ b/arch/x86/kernel/e820.c @@ -422,6 +422,7 @@ u64 __init e820_update_range(u64 start, u64 size, unsigned old_type, final_end = min(start + size, ei->addr + ei->size); if (final_start >= final_end) continue; + ei->size -= final_end - final_start; e820_add_region(final_start, final_end - final_start, new_type); real_updated_size += final_end - final_start; -- 1.5.4.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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