From 3e68482224129c3ddc061af7c9d438b882ecfdd1 Mon Sep 17 00:00:00 2001 From: Eduardo Habkost Date: Tue, 3 Nov 2015 17:18:50 -0200 Subject: target-i386: Set "check=off" by default on pc-*-2.4 and older The default CPU model (qemu64) have some issues today: it enables some features (ABM and SSE4a) that are not present in many host CPUs. That means many hosts (but not all of them) had those features silently disabled in the default configuration in QEMU 2.4 and older. With the new "check=on" default, this causes warnings to be printed in the default configuration, because of the lack of SSE4A on all Intel hosts, and the lack of ABM on Sandy Bridge and older hosts: $ qemu-system-x86_64 -machine pc,accel=kvm warning: host doesn't support requested feature: CPUID.80000001H:ECX.abm [bit 5] warning: host doesn't support requested feature: CPUID.80000001H:ECX.sse4a [bit 6] Those issues will be fixed in pc-*-2.5 and newer. But as we can't change the guest ABI in pc-*-2.4, disable "check" mode by default in pc-*-2.4 and older so we don't print spurious warnings. Reviewed-by: Paolo Bonzini Signed-off-by: Eduardo Habkost --- include/hw/i386/pc.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/hw') diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h index 606dbc2854..8be4520265 100644 --- a/include/hw/i386/pc.h +++ b/include/hw/i386/pc.h @@ -322,6 +322,11 @@ bool e820_get_entry(int, uint32_t, uint64_t *, uint64_t *); .driver = "host" "-" TYPE_X86_CPU,\ .property = "host-cache-info",\ .value = "on",\ + },\ + {\ + .driver = TYPE_X86_CPU,\ + .property = "check",\ + .value = "off",\ }, #define PC_COMPAT_2_3 \ -- cgit v1.2.3