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Sat, 15 Feb 2025 00:36:59 -0800 (PST) From: yong.huang@smartx.com To: devel@lists.libvirt.org Subject: [PATCH v1 1/3] libvirt: Add virDomainSetVcpuTuneParameters API Date: Sat, 15 Feb 2025 16:35:51 +0800 Message-Id: <5e4e50e2ecf1764caa3d7068d200c00e7ffc1c50.1739608445.git.yong.huang@smartx.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Message-ID-Hash: EYXDO5UFQLEG7HYQLALENLPRHJIGAOLP X-Message-ID-Hash: EYXDO5UFQLEG7HYQLALENLPRHJIGAOLP X-MailFrom: yong.huang@smartx.com X-Mailman-Rule-Hits: nonmember-moderation X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-config-1; header-match-config-2; header-match-config-3; header-match-devel.lists.libvirt.org-0 CC: yong.huang@smartx.com X-Mailman-Version: 3.2.2 Precedence: list List-Id: Development discussions about the libvirt library & tools Archived-At: List-Archive: List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZM-MESSAGEID: 1739608676465019000 Content-Type: text/plain; charset="utf-8" From: Hyman Huang Introduce virDomainSetVcpuTuneParameters API to support tunables of virtual CPUs. Signed-off-by: Hyman Huang --- include/libvirt/libvirt-domain.h | 13 ++++++++ src/driver-hypervisor.h | 8 +++++ src/libvirt-domain.c | 56 ++++++++++++++++++++++++++++++++ src/libvirt_public.syms | 5 +++ src/remote/remote_driver.c | 1 + src/remote/remote_protocol.x | 20 +++++++++++- 6 files changed, 102 insertions(+), 1 deletion(-) diff --git a/include/libvirt/libvirt-domain.h b/include/libvirt/libvirt-dom= ain.h index f5420bca6e..ae1e07b7b6 100644 --- a/include/libvirt/libvirt-domain.h +++ b/include/libvirt/libvirt-domain.h @@ -6612,4 +6612,17 @@ virDomainGraphicsReload(virDomainPtr domain, unsigned int type, unsigned int flags); =20 +/** + * virDomainSetVcpuTuneParameters: + * + * Set virtual CPU tunables for the domain + * + * Since: 11.1.0 + */ +int +virDomainSetVcpuTuneParameters(virDomainPtr domain, + const char *vcpumap, + virTypedParameterPtr params, + int nparams, + unsigned int flags); #endif /* LIBVIRT_DOMAIN_H */ diff --git a/src/driver-hypervisor.h b/src/driver-hypervisor.h index 4ce8da078d..b8b8d53311 100644 --- a/src/driver-hypervisor.h +++ b/src/driver-hypervisor.h @@ -1453,6 +1453,13 @@ typedef int unsigned int type, unsigned int flags); =20 +typedef int +(*virDrvDomainSetVcpuTuneParameters)(virDomainPtr domain, + const char *vcpumap, + virTypedParameterPtr params, + int nparams, + unsigned int flags); + typedef struct _virHypervisorDriver virHypervisorDriver; =20 /** @@ -1726,4 +1733,5 @@ struct _virHypervisorDriver { virDrvDomainStartDirtyRateCalc domainStartDirtyRateCalc; virDrvDomainFDAssociate domainFDAssociate; virDrvDomainGraphicsReload domainGraphicsReload; + virDrvDomainSetVcpuTuneParameters domainSetVcpuTuneParameters; }; diff --git a/src/libvirt-domain.c b/src/libvirt-domain.c index 072cc32255..90d02a2f06 100644 --- a/src/libvirt-domain.c +++ b/src/libvirt-domain.c @@ -14162,3 +14162,59 @@ virDomainGraphicsReload(virDomainPtr domain, virDispatchError(domain->conn); return -1; } + + +/** + * virDomainSetVcpuTuneParameters: + * @domain: pointer to domain object + * @vcpumap: text representation of a bitmap of vcpus to set + * @params: pointer to virtual CPU parameter objects + * @nparams: number of virtual CPU tunable parameter + * @flags: bitwise-OR of virDomainModificationImpact + * + * Change all or a subset of the virtual CPU tunables. + * + * Returns 0 in case of success, -1 in case of failure. + * + * Since: 11.1.0 + */ +int +virDomainSetVcpuTuneParameters(virDomainPtr domain, + const char *vcpumap, + virTypedParameterPtr params, + int nparams, + unsigned int flags) +{ + virConnectPtr conn; + + VIR_DOMAIN_DEBUG(domain, "vcpumap=3D'%s', params=3D%p, nparams=3D%d, f= lags=3D0x%x", + vcpumap, params, nparams, flags); + + virResetLastError(); + + virCheckDomainReturn(domain, -1); + conn =3D domain->conn; + + virCheckReadOnlyGoto(conn->flags, error); + virCheckNonNullArgGoto(vcpumap, error); + virCheckNonNullArgGoto(params, error); + virCheckPositiveArgGoto(nparams, error); + + if (virTypedParameterValidateSet(conn, params, nparams) < 0) + goto error; + + if (conn->driver->domainSetVcpuTuneParameters) { + int ret; + ret =3D conn->driver->domainSetVcpuTuneParameters(domain, vcpumap,= params, + nparams, flags); + if (ret < 0) + goto error; + return ret; + } + + virReportUnsupportedError(); + + error: + virDispatchError(domain->conn); + return -1; +} diff --git a/src/libvirt_public.syms b/src/libvirt_public.syms index 7a3492d9d7..65d684b58b 100644 --- a/src/libvirt_public.syms +++ b/src/libvirt_public.syms @@ -948,4 +948,9 @@ LIBVIRT_10.2.0 { virDomainGraphicsReload; } LIBVIRT_10.1.0; =20 +LIBVIRT_11.1.0 { + global: + virDomainSetVcpuTuneParameters; +} LIBVIRT_10.2.0; + # .... define new API here using predicted next version number .... diff --git a/src/remote/remote_driver.c b/src/remote/remote_driver.c index 307f9ca945..eb3a47ef75 100644 --- a/src/remote/remote_driver.c +++ b/src/remote/remote_driver.c @@ -7835,6 +7835,7 @@ static virHypervisorDriver hypervisor_driver =3D { .domainSetLaunchSecurityState =3D remoteDomainSetLaunchSecurityState, = /* 8.0.0 */ .domainFDAssociate =3D remoteDomainFDAssociate, /* 9.0.0 */ .domainGraphicsReload =3D remoteDomainGraphicsReload, /* 10.2.0 */ + .domainSetVcpuTuneParameters =3D remoteDomainSetVcpuTuneParameters, /*= 11.1.0 */ }; =20 static virNetworkDriver network_driver =3D { diff --git a/src/remote/remote_protocol.x b/src/remote/remote_protocol.x index 41c045ff78..f99f44c9b5 100644 --- a/src/remote/remote_protocol.x +++ b/src/remote/remote_protocol.x @@ -292,6 +292,9 @@ const REMOTE_DOMAIN_AUTHORIZED_SSH_KEYS_MAX =3D 2048; /* Upper limit on number of messages */ const REMOTE_DOMAIN_MESSAGES_MAX =3D 2048; =20 +/* Upper limit on VCPU tunable parameters. */ +const REMOTE_DOMAIN_SET_VCPU_TUNE_PARAMETERS_MAX =3D 16; + =20 /* UUID. VIR_UUID_BUFLEN definition comes from libvirt.h */ typedef opaque remote_uuid[VIR_UUID_BUFLEN]; @@ -3973,6 +3976,13 @@ struct remote_domain_fd_associate_args { remote_nonnull_string name; unsigned int flags; }; + +struct remote_domain_set_vcpu_tune_parameters_args { + remote_nonnull_domain dom; + remote_nonnull_string cpumap; + remote_typed_param params; + unsigned int flags; +}; /*----- Protocol. -----*/ =20 /* Define the program number, protocol version and procedure numbers here.= */ @@ -7048,5 +7058,13 @@ enum remote_procedure { * @generate: both * @acl: domain:write */ - REMOTE_PROC_DOMAIN_GRAPHICS_RELOAD =3D 448 + REMOTE_PROC_DOMAIN_GRAPHICS_RELOAD =3D 448, + + /** + * @generate: both + * @acl: domain:write + * @acl: domain:save:!VIR_DOMAIN_AFFECT_CONFIG|VIR_DOMAIN_AFFECT_LIVE + * @acl: domain:save:VIR_DOMAIN_AFFECT_CONFIG + */ + REMOTE_PROC_DOMAIN_SET_VCPU_TUNE_PARAMETERS =3D 449 }; --=20 2.27.0 From nobody Sat Feb 7 15:50:06 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of lists.libvirt.org designates 8.43.85.245 as permitted sender) client-ip=8.43.85.245; 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Sat, 15 Feb 2025 00:37:01 -0800 (PST) From: yong.huang@smartx.com To: devel@lists.libvirt.org Subject: [PATCH v1 2/3] qemu_driver: Implement qemuDomainSetVcpuTuneParameters Date: Sat, 15 Feb 2025 16:35:52 +0800 Message-Id: <1ff1bcc3f34d6e384d78333ca4445ca05cfdd204.1739608445.git.yong.huang@smartx.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Message-ID-Hash: 3PX2FOH43FUHKVCCNCNFD4YZU4ACZLKR X-Message-ID-Hash: 3PX2FOH43FUHKVCCNCNFD4YZU4ACZLKR X-MailFrom: yong.huang@smartx.com X-Mailman-Rule-Hits: nonmember-moderation X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-config-1; header-match-config-2; header-match-config-3; header-match-devel.lists.libvirt.org-0 CC: yong.huang@smartx.com X-Mailman-Version: 3.2.2 Precedence: list List-Id: Development discussions about the libvirt library & tools Archived-At: List-Archive: List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZM-MESSAGEID: 1739608696460019100 Content-Type: text/plain; charset="utf-8" From: Hyman Huang Support hotplug/hotunplug of virtual CPU by wrapping the existing interface qemuDomainSetVcpu. Signed-off-by: Hyman Huang --- include/libvirt/libvirt-domain.h | 12 ++++++++++++ src/qemu/qemu_driver.c | 29 +++++++++++++++++++++++++++++ 2 files changed, 41 insertions(+) diff --git a/include/libvirt/libvirt-domain.h b/include/libvirt/libvirt-dom= ain.h index ae1e07b7b6..16e3140e09 100644 --- a/include/libvirt/libvirt-domain.h +++ b/include/libvirt/libvirt-domain.h @@ -6612,6 +6612,18 @@ virDomainGraphicsReload(virDomainPtr domain, unsigned int type, unsigned int flags); =20 +/* Virtual CPU set parameters */ + +/** + * VIR_DOMAIN_VCPU_STATE: + * + * The tunable enable/disable individual vcpus described by @vcpumap + * in the hypervisor* + * + * Since: 11.1.0 + */ +# define VIR_DOMAIN_VCPU_STATE "state" + /** * virDomainSetVcpuTuneParameters: * diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index 772cb405d6..59d94c6dd6 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -20081,6 +20081,34 @@ qemuDomainGraphicsReload(virDomainPtr domain, return ret; } =20 +static int +qemuDomainSetVcpuTuneParameters(virDomainPtr dom, + const char *vcpumap, + virTypedParameterPtr params, + int nparams, + unsigned int flags) +{ + int state; + int rc; + + if (virTypedParamsValidate(params, nparams, + VIR_DOMAIN_VCPU_STATE, + VIR_TYPED_PARAM_INT, + NULL) < 0) + return -1; + + if ((rc =3D virTypedParamsGetInt(params, nparams, + VIR_DOMAIN_VCPU_STATE, + &state)) < 0) + return -1; + + if (rc =3D=3D 1) { + return qemuDomainSetVcpu(dom, vcpumap, state, flags); + } + + return 0; +} + static virHypervisorDriver qemuHypervisorDriver =3D { .name =3D QEMU_DRIVER_NAME, .connectURIProbe =3D qemuConnectURIProbe, @@ -20331,6 +20359,7 @@ static virHypervisorDriver qemuHypervisorDriver =3D= { .domainSetLaunchSecurityState =3D qemuDomainSetLaunchSecurityState, /*= 8.0.0 */ .domainFDAssociate =3D qemuDomainFDAssociate, /* 9.0.0 */ .domainGraphicsReload =3D qemuDomainGraphicsReload, /* 10.2.0 */ + .domainSetVcpuTuneParameters =3D qemuDomainSetVcpuTuneParameters, /* 1= 1.1.0 */ }; =20 =20 --=20 2.27.0 From nobody Sat Feb 7 15:50:06 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of lists.libvirt.org designates 8.43.85.245 as permitted sender) client-ip=8.43.85.245; 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Sat, 15 Feb 2025 00:37:03 -0800 (PST) From: yong.huang@smartx.com To: devel@lists.libvirt.org Subject: [PATCH v1 3/3] virsh: Use the new API to implement cmdSetvcpu Date: Sat, 15 Feb 2025 16:35:53 +0800 Message-Id: <1343c6dc19acecfdb282e68383303bd4fb8da80c.1739608445.git.yong.huang@smartx.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Message-ID-Hash: 74TDMLTSWHURIPA7S6VUYLR3WOYEG4AM X-Message-ID-Hash: 74TDMLTSWHURIPA7S6VUYLR3WOYEG4AM X-MailFrom: yong.huang@smartx.com X-Mailman-Rule-Hits: nonmember-moderation X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-config-1; header-match-config-2; header-match-config-3; header-match-devel.lists.libvirt.org-0 CC: yong.huang@smartx.com X-Mailman-Version: 3.2.2 Precedence: list List-Id: Development discussions about the libvirt library & tools Archived-At: List-Archive: List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZM-MESSAGEID: 1739608719695019100 Content-Type: text/plain; charset="utf-8" From: Hyman Huang Signed-off-by: Hyman Huang --- tools/virsh-domain.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/tools/virsh-domain.c b/tools/virsh-domain.c index f3da2f903f..83db56460b 100644 --- a/tools/virsh-domain.c +++ b/tools/virsh-domain.c @@ -7345,6 +7345,7 @@ cmdSetvcpu(vshControl *ctl, const vshCmd *cmd) const char *vcpulist =3D NULL; int state =3D 0; unsigned int flags =3D VIR_DOMAIN_AFFECT_CURRENT; + virTypedParameterPtr params =3D NULL; =20 VSH_EXCLUSIVE_OPTIONS_VAR(enable, disable); =20 @@ -7370,7 +7371,14 @@ cmdSetvcpu(vshControl *ctl, const vshCmd *cmd) if (enable) state =3D 1; =20 - if (virDomainSetVcpu(dom, vcpulist, state, flags) < 0) + params =3D g_new0(virTypedParameter, 1); + if (virTypedParameterAssign(¶ms[0], + VIR_DOMAIN_VCPU_STATE, + VIR_TYPED_PARAM_INT, + state) < 0) + return false; + + if (virDomainSetVcpuTuneParameters(dom, vcpulist, params, 1, flags) < = 0) return false; =20 return true; --=20 2.27.0