Messages in this thread Patch in this message | | | Date | Thu, 9 Nov 2006 13:27:39 -0800 | From | "Aaron Durbin" <> | Subject | [PATCH] x86_64: Fix partial page check to ensure unusable memory is not being marked usable. |
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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@google.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;
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