From: Paolo Bonzini <pbonzini@redhat.com>
Date: Wed, 31 May 2017 12:37:15 +0000 (+0200)
Subject: linuxboot_dma: compile for i486
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=7e018385103cd7a571b9ea0d6f994af6b1129fe7;p=qemu.git

linuxboot_dma: compile for i486

The ROM uses the cmovne instruction, which is new in Pentium Pro and does not
work when running QEMU with "-cpu 486".  Avoid producing that instruction.

Suggested-by: Richard W.M. Jones <rjones@redhat.com>
Suggested-by: Thomas Huth <thuth@redhat.com>
Reported-by: Rob Landley <rob@landley.net>
Cc: qemu-stable@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---

diff --git a/pc-bios/linuxboot_dma.bin b/pc-bios/linuxboot_dma.bin
index 218d3ab4a2..d176f62797 100644
Binary files a/pc-bios/linuxboot_dma.bin and b/pc-bios/linuxboot_dma.bin differ
diff --git a/pc-bios/optionrom/Makefile b/pc-bios/optionrom/Makefile
index fa53d9e58e..a9a9e5e7eb 100644
--- a/pc-bios/optionrom/Makefile
+++ b/pc-bios/optionrom/Makefile
@@ -13,6 +13,7 @@ $(call set-vpath, $(SRC_PATH)/pc-bios/optionrom)
 ifeq ($(lastword $(filter -O%, -O0 $(CFLAGS))),-O0)
 override CFLAGS += -O2
 endif
+override CFLAGS += -march=i486
 
 # Drop -fstack-protector and the like
 QEMU_CFLAGS := $(filter -W%, $(QEMU_CFLAGS)) $(CFLAGS_NOPIE) -ffreestanding