diff options
authorAlexander Kanavin <>2022-12-30 19:38:41 +0100
committerRichard Purdie <>2023-01-06 12:03:31 +0000
commit6f2af1e5d1537b4d31e14946292bf58f0fd76fc9 (patch)
parent846ff49465337dddd75a83161f41f48117f6571c (diff)
qemux86-64: build for x86-64-v3 (2013 Haswell and later) rather than Core 2 from 2006
This allows us to - test those more recent instruction sets (AVX, AVX2, BMI1, BMI2, F16C, FMA, LZCNT, MOVBE, XSAVE) - benefit from improved performance across the stack both in kvm-driven system emulation and when running on real silicon. For example, glibc: v4 level is adding AVX-512, which is far less established, particularly Intel has famously backtracked from supporting it in Alder Lake/Raport Lake client CPUs and AMD has only implemented it in very recent Zen4 products: Signed-off-by: Alexander Kanavin <> Signed-off-by: Richard Purdie <>
2 files changed, 4 insertions, 4 deletions
diff --git a/meta/conf/machine/include/x86/ b/meta/conf/machine/include/x86/
index 3953679366..31db1b2a61 100644
--- a/meta/conf/machine/include/x86/
+++ b/meta/conf/machine/include/x86/
@@ -4,8 +4,8 @@ QB_SMP = "-smp 4"
QB_CPU:x86 = "-cpu IvyBridge -machine q35,i8042=off"
QB_CPU_KVM:x86 = "-cpu IvyBridge -machine q35,i8042=off"
-QB_CPU:x86-64 = "-cpu IvyBridge -machine q35,i8042=off"
-QB_CPU_KVM:x86-64 = "-cpu IvyBridge -machine q35,i8042=off"
+QB_CPU:x86-64 = "-cpu Skylake-Client -machine q35,i8042=off"
+QB_CPU_KVM:x86-64 = "-cpu Skylake-Client -machine q35,i8042=off"
QB_AUDIO_DRV = "alsa"
QB_AUDIO_OPT = "-device AC97"
diff --git a/meta/conf/machine/qemux86-64.conf b/meta/conf/machine/qemux86-64.conf
index 8640867911..d355375f13 100644
--- a/meta/conf/machine/qemux86-64.conf
+++ b/meta/conf/machine/qemux86-64.conf
@@ -9,8 +9,8 @@ PREFERRED_PROVIDER_virtual/libgles2 ?= "mesa"
PREFERRED_PROVIDER_virtual/libgles3 ?= "mesa"
require conf/machine/include/
-DEFAULTTUNE ?= "core2-64"
-require conf/machine/include/x86/
+DEFAULTTUNE ?= "x86-64-v3"
+require conf/machine/include/x86/
require conf/machine/include/x86/
UBOOT_MACHINE ?= "qemu-x86_64_defconfig"