From 0ebcd6f3570dd66bff0930872b8bf859bdcf302a Mon Sep 17 00:00:00 2001 Message-Id: <0ebcd6f3570dd66bff0930872b8bf859bdcf302a.1477548646.git.panand@redhat.com> From: Pratyush Anand Date: Thu, 27 Oct 2016 11:34:33 +0530 Subject: [PATCH] x86_64: fix page_offset calculation Kernel text region lies above __START_KERNEL_map, which is linearly mapped however not a direct mapping. Direct mapping region lies below it instead. So, page_offset can only be calculated with a region which is below __START_KERNEL_map. Signed-off-by: Pratyush Anand --- arch/x86_64.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86_64.c b/arch/x86_64.c index 13990cef839b..3ef33ae4ef2d 100644 --- a/makedumpfile-1.6.0/arch/x86_64.c +++ b/makedumpfile-1.6.0/arch/x86_64.c @@ -41,7 +41,7 @@ get_page_offset_x86_64(void) unsigned long long virt_start; for (i = 0; get_pt_load(i, &phys_start, NULL, &virt_start, NULL); i++) { - if (virt_start >= __START_KERNEL_map) { + if (virt_start < __START_KERNEL_map) { info->page_offset = virt_start - phys_start; return TRUE; } -- 2.7.4