From: Juergen Gross Date: Thu, 16 Apr 2020 13:17:15 +0000 (+0200) Subject: mini-os: use -m elf_i386 for final linking X-Git-Tag: xen-RELEASE-4.14.0~4 X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=203498c11cdb4e0dbfc90aa8d60319032288925c;p=mini-os.git mini-os: use -m elf_i386 for final linking Using the standard -m elf_x86_64 for 64-bit mini-os results in the first section (.text) to start only at offset 2MB in the binary file. Quoting Andrew Cooper on that topic: Specifically, 64bit emulation appears to include "align primary sections to 2M so your OS can make better use of superpages even when mmap()ing", with no way I can spot to override this in the linker file. Using -m elf_i386 avoids that problem without any visible disadvantage. Signed-off-by: Juergen Gross Reviewed-by: Samuel Thibault --- diff --git a/arch/x86/arch.mk b/arch/x86/arch.mk index c87885f..00028a0 100644 --- a/arch/x86/arch.mk +++ b/arch/x86/arch.mk @@ -26,3 +26,5 @@ ifeq ($(CONFIG_PARAVIRT),n) ARCH_LDFLAGS_FINAL := --oformat=elf32-i386 ARCH_AS_DEPS += x86_hvm.S endif + +ARCH_LDFLAGS_FINAL += -m elf_i386