From: Alexander Kanavin <[email protected]> Each of the cores is mapped to a thread on the host, this should speed up things inside qemu which can take advantage of that.
Signed-off-by: Alexander Kanavin <[email protected]> Signed-off-by: Richard Purdie <[email protected]> --- meta/classes/qemuboot.bbclass | 4 ++++ scripts/runqemu | 4 ++-- 2 files changed, 6 insertions(+), 2 deletions(-) diff --git a/meta/classes/qemuboot.bbclass b/meta/classes/qemuboot.bbclass index 1f8012edc1d..0fdd10099ce 100644 --- a/meta/classes/qemuboot.bbclass +++ b/meta/classes/qemuboot.bbclass @@ -19,6 +19,9 @@ # QB_CPU_KVM: the similar to QB_CPU, but used when kvm, e.g., '-cpu kvm64', # set it when support kvm. # +# QB_SMP: amount of CPU cores inside qemu guest, each mapped to a thread on the host, +# e.g. "-smp 8". +# # QB_KERNEL_CMDLINE_APPEND: options to append to kernel's -append # option, e.g., "console=ttyS0 console=tty" # @@ -80,6 +83,7 @@ # See "runqemu help" for more info QB_MEM ?= "-m 256" +QB_SMP ?= "-smp 4" QB_SERIAL_OPT ?= "-serial mon:stdio -serial null" QB_DEFAULT_KERNEL ?= "${KERNEL_IMAGETYPE}" QB_DEFAULT_FSTYPE ?= "ext4" diff --git a/scripts/runqemu b/scripts/runqemu index edd17d09c4a..e2dc529baaf 100755 --- a/scripts/runqemu +++ b/scripts/runqemu @@ -540,13 +540,13 @@ class BaseConfig(object): def check_kvm(self): """Check kvm and kvm-host""" if not (self.kvm_enabled or self.vhost_enabled): - self.qemu_opt_script += ' %s %s' % (self.get('QB_MACHINE'), self.get('QB_CPU')) + self.qemu_opt_script += ' %s %s %s' % (self.get('QB_MACHINE'), self.get('QB_CPU'), self.get('QB_SMP')) return if not self.get('QB_CPU_KVM'): raise RunQemuError("QB_CPU_KVM is NULL, this board doesn't support kvm") - self.qemu_opt_script += ' %s %s' % (self.get('QB_MACHINE'), self.get('QB_CPU_KVM')) + self.qemu_opt_script += ' %s %s %s' % (self.get('QB_MACHINE'), self.get('QB_CPU_KVM'), self.get('QB_SMP')) yocto_kvm_wiki = "https://wiki.yoctoproject.org/wiki/How_to_enable_KVM_for_Poky_qemu"; yocto_paravirt_kvm_wiki = "https://wiki.yoctoproject.org/wiki/Running_an_x86_Yocto_Linux_image_under_QEMU_KVM"; dev_kvm = '/dev/kvm' -- 2.30.2
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