qemux86-64: build for x86-64-v3 (2013 Haswell and later) rather than Core 2 from...

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:
https://www.phoronix.com/news/Glibc-strcasecmp-AVX2-EVEX

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:
https://www.phoronix.com/news/GCC-11-x86-64-Feature-Levels

Signed-off-by: Alexander Kanavin <alex@linutronix.de>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

diff --git a/meta/conf/machine/include/x86/qemuboot-x86.inc b/meta/conf/machine/include/x86/qemuboot-x86.inc
index 3953679366d9684ec1fde996141a757684065be3..31db1b2a61ff1e773286c5b56d443a874a3896eb 100644 (file)
--- a/meta/conf/machine/include/x86/qemuboot-x86.inc
+++ b/meta/conf/machine/include/x86/qemuboot-x86.inc
@@ -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 864086791179c0491580d9393d1ba26c4d2899d4..d355375f13cc242a89ac19f04c2f3203259bfe90 100644 (file)
--- 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/qemu.inc
-DEFAULTTUNE ?= "core2-64"
-require conf/machine/include/x86/tune-corei7.inc
+DEFAULTTUNE ?= "x86-64-v3"
+require conf/machine/include/x86/tune-x86-64-v3.inc
 require conf/machine/include/x86/qemuboot-x86.inc
 
 UBOOT_MACHINE ?= "qemu-x86_64_defconfig"