From cb9056e009a9e139c922f8643ef8dbe54b70edc4 Mon Sep 17 00:00:00 2001 From: Russell King Date: Mon, 6 Jun 2016 17:59:08 +0100 Subject: arm: fix kdump to work on LPAE systems We need to use 64-bit file IO when mapping system memory and the core dump file as we may be running on a LPAE system, otherwise we risk mapping memory we shouldn't, and causing a kernel oops: Unhandled fault: asynchronous external abort (0x211) at 0x00000000 pgd = edd2c740 [00000000] *pgd=82ec98003, *pmd=82dcd2003, *pte=00000000 Acked-by: Baoquan He Signed-off-by: Russell King Signed-off-by: Simon Horman --- kexec/arch/arm/Makefile | 3 +++ 1 file changed, 3 insertions(+) diff --git a/kexec/arch/arm/Makefile b/kexec/arch/arm/Makefile index 38137d7..60e433a 100644 --- a/kexec/arch/arm/Makefile +++ b/kexec/arch/arm/Makefile @@ -18,6 +18,9 @@ libfdt_SRCS += $(LIBFDT_SRCS:%=kexec/libfdt/%) arm_CPPFLAGS = -I$(srcdir)/kexec/libfdt +# We want 64-bit file IO for kdump to work correctly on LPAE systems +arm_CPPFLAGS += -D_FILE_OFFSET_BITS=64 + arm_KEXEC_SRCS += $(libfdt_SRCS) arm_UIMAGE = kexec/kexec-uImage.c -- cgit