Generating command line is pretty easy - just put tb-size=XXX onto -accel tcg part. Note, that QEMU expects the size in MiB. Resolves: https://gitlab.com/libvirt/libvirt/-/issues/229 Signed-off-by: Michal Privoznik <mprivozn@xxxxxxxxxx> Tested-by: Kashyap Chamarthy <kchamart@xxxxxxxxxx> --- src/qemu/qemu_command.c | 5 +++ ...efault-cpu-tcg-features.x86_64-latest.args | 36 +++++++++++++++++++ tests/qemuxml2argvtest.c | 1 + 3 files changed, 42 insertions(+) create mode 100644 tests/qemuxml2argvdata/x86_64-default-cpu-tcg-features.x86_64-latest.args diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c index c47998aabd..4b2b558aba 100644 --- a/src/qemu/qemu_command.c +++ b/src/qemu/qemu_command.c @@ -7282,6 +7282,11 @@ qemuBuildAccelCommandLine(virCommand *cmd, switch ((virDomainVirtType)def->virtType) { case VIR_DOMAIN_VIRT_QEMU: virBufferAddLit(&buf, "tcg"); + + if (def->features[VIR_DOMAIN_FEATURE_TCG] == VIR_TRISTATE_SWITCH_ON) { + virBufferAsprintf(&buf, ",tb-size=%llu", + def->tcg_features->tb_cache >> 10); + } break; case VIR_DOMAIN_VIRT_KVM: diff --git a/tests/qemuxml2argvdata/x86_64-default-cpu-tcg-features.x86_64-latest.args b/tests/qemuxml2argvdata/x86_64-default-cpu-tcg-features.x86_64-latest.args new file mode 100644 index 0000000000..c9c71cf4e6 --- /dev/null +++ b/tests/qemuxml2argvdata/x86_64-default-cpu-tcg-features.x86_64-latest.args @@ -0,0 +1,36 @@ +LC_ALL=C \ +PATH=/bin \ +HOME=/tmp/lib/domain--1-guest \ +USER=test \ +LOGNAME=test \ +XDG_DATA_HOME=/tmp/lib/domain--1-guest/.local/share \ +XDG_CACHE_HOME=/tmp/lib/domain--1-guest/.cache \ +XDG_CONFIG_HOME=/tmp/lib/domain--1-guest/.config \ +/usr/bin/qemu-system-x86_64 \ +-name guest=guest,debug-threads=on \ +-S \ +-object '{"qom-type":"secret","id":"masterKey0","format":"raw","file":"/tmp/lib/domain--1-guest/master-key.aes"}' \ +-machine pc-q35-6.2,usb=off,dump-guest-core=off,memory-backend=pc.ram \ +-accel tcg,tb-size=100 \ +-cpu qemu64 \ +-m 4096 \ +-object '{"qom-type":"memory-backend-ram","id":"pc.ram","size":4294967296}' \ +-overcommit mem-lock=off \ +-smp 4,sockets=4,cores=1,threads=1 \ +-uuid 1ccfd97d-5eb4-478a-bbe6-88d254c16db7 \ +-display none \ +-no-user-config \ +-nodefaults \ +-chardev socket,id=charmonitor,fd=1729,server=on,wait=off \ +-mon chardev=charmonitor,id=monitor,mode=control \ +-rtc base=utc \ +-no-shutdown \ +-boot strict=on \ +-device '{"driver":"pcie-root-port","port":8,"chassis":1,"id":"pci.1","bus":"pcie.0","multifunction":true,"addr":"0x1"}' \ +-device '{"driver":"pcie-root-port","port":9,"chassis":2,"id":"pci.2","bus":"pcie.0","addr":"0x1.0x1"}' \ +-device '{"driver":"pcie-root-port","port":10,"chassis":3,"id":"pci.3","bus":"pcie.0","addr":"0x1.0x2"}' \ +-device '{"driver":"qemu-xhci","id":"usb","bus":"pci.1","addr":"0x0"}' \ +-audiodev '{"id":"audio1","driver":"none"}' \ +-device '{"driver":"virtio-balloon-pci","id":"balloon0","bus":"pci.2","addr":"0x0"}' \ +-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \ +-msg timestamp=on diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c index 5e4cd7389c..a940c51815 100644 --- a/tests/qemuxml2argvtest.c +++ b/tests/qemuxml2argvtest.c @@ -3372,6 +3372,7 @@ mymain(void) DO_TEST_CAPS_ARCH_LATEST("x86_64-default-cpu-tcg-pc-4.2", "x86_64"); DO_TEST_CAPS_ARCH_LATEST("x86_64-default-cpu-kvm-q35-4.2", "x86_64"); DO_TEST_CAPS_ARCH_LATEST("x86_64-default-cpu-tcg-q35-4.2", "x86_64"); + DO_TEST_CAPS_ARCH_LATEST("x86_64-default-cpu-tcg-features", "x86_64"); DO_TEST_CAPS_LATEST("virtio-9p-multidevs"); DO_TEST_CAPS_LATEST("virtio-9p-createmode"); -- 2.32.0
