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Date: Thu, 9 Nov 2006 13:27:39 -0800 From: "Aaron Durbin" <adurbin@...gle.com> To: "Andi Kleen" <ak@...e.de> Cc: "Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>, "Mel Gorman" <mel@....ul.ie>, "Andrew Morton" <akpm@...l.org> Subject: [PATCH] x86_64: Fix partial page check to ensure unusable memory is not being marked usable. Fix partial page check in e820_register_active_regions to ensure partial pages are not being marked as active in the memory pool. Signed-off-by: Aaron Durbin <adurbin@...gle.com> --- This was causing a machine to reboot w/ an area in the e820 that was less than the page size because the upper address was being use to mark a hole as active in the memory pool. arch/x86_64/kernel/e820.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/arch/x86_64/kernel/e820.c b/arch/x86_64/kernel/e820.c index a75c829..855b561 100644 --- a/arch/x86_64/kernel/e820.c +++ b/arch/x86_64/kernel/e820.c @@ -278,7 +278,7 @@ e820_register_active_regions(int nid, un >> PAGE_SHIFT; /* Skip map entries smaller than a page */ - if (ei_startpfn > ei_endpfn) + if (ei_startpfn >= ei_endpfn) continue; /* Check if end_pfn_map should be updated */ -- 1.4.2.GIT - 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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