On Thu, Sep 04, 2025 at 17:04:49 +0800, BillXiang wrote:
> From: xiangwencheng <xiangwench...@lanxincomputing.com>
>
> riscv-aia feature was introduced in qemu-8.2 to specify the
> KVM AIA mode. The "riscv-aia" parameter is passed along with
> -accel in QEMU command-line.
> 1) "riscv-aia=emul": IMSIC is emulated by hypervisor
> 2) "riscv-aia=hwaccel": use hardware guest IMSIC
> 3) "riscv-aia=auto": use the hardware guest IMSICs whenever available
> otherwise we fallback to software emulation.
>
> This patch add the corresponding feature named 'riscv-aia'.
>
> Signed-off-by: BillXiang <xiangwench...@lanxincomputing.com>
> ---
> src/conf/domain_conf.c | 28 +++++++++++++++++++++++++++-
> src/conf/domain_conf.h | 11 +++++++++++
> src/conf/schemas/domaincommon.rng | 12 ++++++++++++
For anything adding XML schema we require that test XMLs excercise it.
Both for the parser and also that some bindings projects take the XMLs
to excercise their XML infra.
> src/libvirt_private.syms | 2 ++
> src/qemu/qemu_command.c | 13 ++++++++++---
> 5 files changed, 62 insertions(+), 4 deletions(-)
>
> diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
> index 7766e302ec..a9f1161133 100644
> --- a/src/conf/domain_conf.c
> +++ b/src/conf/domain_conf.c
> @@ -224,6 +224,14 @@ VIR_ENUM_IMPL(virDomainKVM,
> "poll-control",
> "pv-ipi",
> "dirty-ring",
> + "riscv-aia",
> +);
> +
> +VIR_ENUM_IMPL(virDomainKVMRiscvAIAMode,
> + VIR_DOMAIN_KVM_TISCV_AIA_MODE_LAST,
> + "auto",
> + "emul",
> + "hwaccel",
> );
>
> VIR_ENUM_IMPL(virDomainXen,
> @@ -17183,6 +17191,15 @@ virDomainFeaturesKVMDefParse(virDomainDef *def,
> return -1;
> }
> }
> +
> + if (feature == VIR_DOMAIN_KVM_RISCV_AIA &&
> + value == VIR_TRISTATE_SWITCH_ON) {
> + if (virXMLPropEnum(feat, "mode",
> + virDomainKVMRiscvAIAModeTypeFromString,
> + VIR_XML_PROP_REQUIRED,
[1] declared as REQUIRED here ...
> + &def->kvm_features->kvm_riscv_aia_mode) < 0)
Broken indentation.
> + return -1;
> + }
> }
>
> def->features[VIR_DOMAIN_FEATURE_KVM] = VIR_TRISTATE_SWITCH_ON;
> @@ -21697,6 +21714,7 @@ virDomainDefFeaturesCheckABIStability(virDomainDef
> *src,
> case VIR_DOMAIN_KVM_POLLCONTROL:
> case VIR_DOMAIN_KVM_PVIPI:
> case VIR_DOMAIN_KVM_DIRTY_RING:
> + case VIR_DOMAIN_KVM_RISCV_AIA:
> if (src->kvm_features->features[i] !=
> dst->kvm_features->features[i]) {
> virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
> _("State of KVM feature '%1$s' differs:
> source: '%2$s', destination: '%3$s'"),
> @@ -28752,7 +28770,15 @@ virDomainDefFormatFeatures(virBuffer *buf,
> }
> }
> break;
> -
> + case VIR_DOMAIN_KVM_RISCV_AIA:
> + if (def->kvm_features->features[j] !=
> VIR_TRISTATE_SWITCH_ABSENT) {
> + virBufferAsprintf(&childBuf, "<%s state='%s'",
> + virDomainKVMTypeToString(j),
> +
> virTristateSwitchTypeToString(def->kvm_features->features[j]));
> + virBufferAsprintf(&childBuf, " mode='%s'/>\n",
> +
> virDomainKVMRiscvAIAModeTypeToString(def->kvm_features->kvm_riscv_aia_mode));
broken indent.
> + }
> + break;
> case VIR_DOMAIN_KVM_LAST:
> break;
> }
> diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
> index eca820892e..0250b3db49 100644
> --- a/src/conf/domain_conf.h
> +++ b/src/conf/domain_conf.h
> @@ -2270,10 +2270,20 @@ typedef enum {
> VIR_DOMAIN_KVM_POLLCONTROL,
> VIR_DOMAIN_KVM_PVIPI,
> VIR_DOMAIN_KVM_DIRTY_RING,
> + VIR_DOMAIN_KVM_RISCV_AIA,
>
> VIR_DOMAIN_KVM_LAST
> } virDomainKVM;
>
> +typedef enum {
> + VIR_DOMAIN_KVM_TISCV_AIA_MODE_AUTO = 0,
> + VIR_DOMAIN_KVM_TISCV_AIA_MODE_EMUL,
> + VIR_DOMAIN_KVM_TISCV_AIA_MODE_HWACCEL,
> +
> + VIR_DOMAIN_KVM_TISCV_AIA_MODE_LAST
> +} virDomainKVMRiscvAIAMode;
> +VIR_ENUM_DECL(virDomainKVMRiscvAIAMode);
> +
> typedef enum {
> VIR_DOMAIN_MSRS_UNKNOWN = 0,
>
> @@ -2476,6 +2486,7 @@ struct _virDomainFeatureKVM {
> int features[VIR_DOMAIN_KVM_LAST];
>
> unsigned int dirty_ring_size; /* size of dirty ring for each vCPU, no
> units */
> + virDomainKVMRiscvAIAMode kvm_riscv_aia_mode;
> };
>
> typedef struct _virDomainFeatureTCG virDomainFeatureTCG;
> diff --git a/src/conf/schemas/domaincommon.rng
> b/src/conf/schemas/domaincommon.rng
> index e369fb6e81..02771a6b7b 100644
> --- a/src/conf/schemas/domaincommon.rng
> +++ b/src/conf/schemas/domaincommon.rng
> @@ -8192,6 +8192,18 @@
> </optional>
> </element>
> </optional>
> + <optional>
> + <element name="riscv-aia">
> + <ref name="featurestate"/>
> + <optional>
[1] but XML schema marks it as optional.
> + <attribute name="mode">
> + <data type="string">
> + <param name="pattern">(auto|emul|hwaccel)</param>
> + </data>
> + </attribute>
> + </optional>
> + </element>
> + </optional>
> </interleave>
> </element>
> </define>
