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| author |   Alexander Kanavin <alex.kanavin@gmail.com> | 2022-12-30 19:38:41 +0100 |
|---|---|---|
| committer |   Richard Purdie <richard.purdie@linuxfoundation.org> | 2023-01-06 12:03:31 +0000 |
| commit | 6f2af1e5d1537b4d31e14946292bf58f0fd76fc9 (patch) | |
| tree | f55ab29e6d01e1def26df51d2568d153284ea247 | |
| parent | 846ff49465337dddd75a83161f41f48117f6571c (diff) | |
| download | openembedded-core-6f2af1e5d1537b4d31e14946292bf58f0fd76fc9.tar.gz | |
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:
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>
| -rw-r--r-- | meta/conf/machine/include/x86/qemuboot-x86.inc | 4 | ||||
| -rw-r--r-- | meta/conf/machine/qemux86-64.conf | 4 |
2 files changed, 4 insertions, 4 deletions
diff --git a/meta/conf/machine/include/x86/qemuboot-x86.inc b/meta/conf/machine/include/x86/qemuboot-x86.inc index 3953679366..31db1b2a61 100644 --- 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 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/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" |