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Message-Id: <20061114508.445749000@suse.de> Date: Tue, 14 Nov 2006 17:08:51 +0100 (CET) From: Andi Kleen <ak@...e.de> To: "Aaron Durbin" <adurbin@...gle.com>, patches@...-64.org, linux-kernel@...r.kernel.org Subject: [PATCH for 2.6.19] [1/9] x86_64: Fix partial page check to ensure unusable memory is not being marked usable. From: "Aaron Durbin" <adurbin@...gle.com> 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> Signed-off-by: Andi Kleen <ak@...e.de> --- 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 insertion(+), 1 deletion(-) Index: linux/arch/x86_64/kernel/e820.c =================================================================== --- linux.orig/arch/x86_64/kernel/e820.c +++ linux/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 */ - 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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