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openEuler Vrit SIG 例会
by openEuler conference 03 Jul '25

03 Jul '25

您好！ Virt 邀请您参加 2025-07-11 14:30 召开的WeLink会议(自动录制) 会议主题：openEuler Vrit SIG 例会会议链接：https://meeting.huaweicloud.com:36443/#/j/967395646 会议纪要：https://etherpad.openeuler.org/p/Virt-meetings 更多资讯尽在：https://www.openeuler.org/zh/ Hello! Virt invites you to attend the WeLink conference(auto recording) will be held at 2025-07-11 14:30, The subject of the conference is openEuler Vrit SIG 例会 You can join the meeting at https://meeting.huaweicloud.com:36443/#/j/967395646 Add topics at https://etherpad.openeuler.org/p/Virt-meetings More information: https://www.openeuler.org/en/

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[PATCH] Revert "backends/iommufd: Make iommufd_backend_*() return bool"
by Zhou Wang 13 Jun '25

13 Jun '25

Revert "backends/iommufd: Make iommufd_backend_*() return bool" and fix the way of vdpa codes use related iommufd APIs. Signed-off-by: Zhou Wang <wangzhou1(a)hisilicon.com> Signed-off-by: Jian Cai <caijian11(a)h-partners.com> --- backends/iommufd.c | 29 ++++++++++++++++------------- backends/trace-events | 4 ++-- hw/virtio/vdpa-dev-iommufd.c | 6 +++--- include/sysemu/iommufd.h | 6 +++--- 4 files changed, 24 insertions(+), 21 deletions(-) diff --git a/backends/iommufd.c b/backends/iommufd.c index 62df6e41f0..4446efaa32 100644 --- a/backends/iommufd.c +++ b/backends/iommufd.c @@ -74,21 +74,23 @@ static void iommufd_backend_class_init(ObjectClass *oc, void *data) object_class_property_add_str(oc, "fd", NULL, iommufd_backend_set_fd); } -bool iommufd_backend_connect(IOMMUFDBackend *be, Error **errp) +int iommufd_backend_connect(IOMMUFDBackend *be, Error **errp) { - int fd; + int fd, ret = 0; if (be->owned && !be->users) { fd = qemu_open("/dev/iommu", O_RDWR, errp); if (fd < 0) { - return false; + ret = fd; + goto out; } be->fd = fd; } be->users++; - - trace_iommufd_backend_connect(be->fd, be->owned, be->users); - return true; +out: + trace_iommufd_backend_connect(be->fd, be->owned, + be->users, ret); + return ret; } void iommufd_backend_disconnect(IOMMUFDBackend *be) @@ -105,24 +107,25 @@ out: trace_iommufd_backend_disconnect(be->fd, be->users); } -bool iommufd_backend_alloc_ioas(IOMMUFDBackend *be, uint32_t *ioas_id, - Error **errp) +int iommufd_backend_alloc_ioas(IOMMUFDBackend *be, uint32_t *ioas_id, + Error **errp) { - int fd = be->fd; + int ret, fd = be->fd; struct iommu_ioas_alloc alloc_data = { .size = sizeof(alloc_data), .flags = 0, }; - if (ioctl(fd, IOMMU_IOAS_ALLOC, &alloc_data)) { + ret = ioctl(fd, IOMMU_IOAS_ALLOC, &alloc_data); + if (ret) { error_setg_errno(errp, errno, "Failed to allocate ioas"); - return false; + return ret; } *ioas_id = alloc_data.out_ioas_id; - trace_iommufd_backend_alloc_ioas(fd, *ioas_id); + trace_iommufd_backend_alloc_ioas(fd, *ioas_id, ret); - return true; + return ret; } void iommufd_backend_free_id(IOMMUFDBackend *be, uint32_t id) diff --git a/backends/trace-events b/backends/trace-events index 8fe77149b2..f8592a2711 100644 --- a/backends/trace-events +++ b/backends/trace-events @@ -7,13 +7,13 @@ dbus_vmstate_loading(const char *id) "id: %s" dbus_vmstate_saving(const char *id) "id: %s" # iommufd.c -iommufd_backend_connect(int fd, bool owned, uint32_t users) "fd=%d owned=%d users=%d" +iommufd_backend_connect(int fd, bool owned, uint32_t users, int ret) "fd=%d owned=%d users=%d (%d)" iommufd_backend_disconnect(int fd, uint32_t users) "fd=%d users=%d" iommu_backend_set_fd(int fd) "pre-opened /dev/iommu fd=%d" iommufd_backend_map_dma(int iommufd, uint32_t ioas, uint64_t iova, uint64_t size, void *vaddr, bool readonly, int ret) " iommufd=%d ioas=%d iova=0x%"PRIx64" size=0x%"PRIx64" addr=%p readonly=%d (%d)" iommufd_backend_unmap_dma_non_exist(int iommufd, uint32_t ioas, uint64_t iova, uint64_t size, int ret) " Unmap nonexistent mapping: iommufd=%d ioas=%d iova=0x%"PRIx64" size=0x%"PRIx64" (%d)" iommufd_backend_unmap_dma(int iommufd, uint32_t ioas, uint64_t iova, uint64_t size, int ret) " iommufd=%d ioas=%d iova=0x%"PRIx64" size=0x%"PRIx64" (%d)" -iommufd_backend_alloc_ioas(int iommufd, uint32_t ioas) " iommufd=%d ioas=%d" +iommufd_backend_alloc_ioas(int iommufd, uint32_t ioas, int ret) " iommufd=%d ioas=%d (%d)" iommufd_backend_alloc_hwpt(int iommufd, uint32_t dev_id, uint32_t pt_id, uint32_t flags, uint32_t hwpt_type, uint32_t len, uint64_t data_ptr, uint32_t out_hwpt_id, int ret) " iommufd=%d dev_id=%u pt_id=%u flags=0x%x hwpt_type=%u len=%u data_ptr=0x%"PRIx64" out_hwpt=%u (%d)" iommufd_backend_free_id(int iommufd, uint32_t id, int ret) " iommufd=%d id=%d (%d)" iommufd_backend_set_dirty(int iommufd, uint32_t hwpt_id, bool start, int ret) " iommufd=%d hwpt=%u enable=%d (%d)" diff --git a/hw/virtio/vdpa-dev-iommufd.c b/hw/virtio/vdpa-dev-iommufd.c index 2b0498f9dc..f5718bae99 100644 --- a/hw/virtio/vdpa-dev-iommufd.c +++ b/hw/virtio/vdpa-dev-iommufd.c @@ -186,12 +186,12 @@ static int vhost_vdpa_container_connect_iommufd(VDPAIOMMUFDContainer *container) return -1; } - if (!iommufd_backend_connect(iommufd, &err)) { + if (iommufd_backend_connect(iommufd, &err)) { error_report_err(err); return -1; } - if (!iommufd_backend_alloc_ioas(iommufd, &ioas_id, &err)) { + if (iommufd_backend_alloc_ioas(iommufd, &ioas_id, &err)) { error_report_err(err); iommufd_backend_disconnect(iommufd); return -1; @@ -480,4 +480,4 @@ void vhost_vdpa_detach_container(VhostVdpaDevice *vdev) vhost_vdpa_container_disconnect_iommufd(container); vhost_vdpa_destroy_container(container); -} \ No newline at end of file +} diff --git a/include/sysemu/iommufd.h b/include/sysemu/iommufd.h index 0531a4ad98..908c94d811 100644 --- a/include/sysemu/iommufd.h +++ b/include/sysemu/iommufd.h @@ -43,11 +43,11 @@ typedef struct IOMMUFDViommu { uint32_t viommu_id; } IOMMUFDViommu; -bool iommufd_backend_connect(IOMMUFDBackend *be, Error **errp); +int iommufd_backend_connect(IOMMUFDBackend *be, Error **errp); void iommufd_backend_disconnect(IOMMUFDBackend *be); -bool iommufd_backend_alloc_ioas(IOMMUFDBackend *be, uint32_t *ioas_id, - Error **errp); +int iommufd_backend_alloc_ioas(IOMMUFDBackend *be, uint32_t *ioas_id, + Error **errp); void iommufd_backend_free_id(IOMMUFDBackend *be, uint32_t id); int iommufd_backend_map_dma(IOMMUFDBackend *be, uint32_t ioas_id, hwaddr iova, ram_addr_t size, void *vaddr, bool readonly); -- 2.43.0

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openEuler Virt SIG 6月例会
by openEuler conference 30 May '25

30 May '25

您好！ Virt 邀请您参加 2025-06-13 14:30 召开的WeLink会议(自动录制) 会议主题：openEuler Virt SIG 6月例会会议链接：https://meeting.huaweicloud.com:36443/#/j/965679214 会议纪要：https://etherpad.openeuler.org/p/Virt-meetings 更多资讯尽在：https://www.openeuler.org/zh/ Hello! Virt invites you to attend the WeLink conference(auto recording) will be held at 2025-06-13 14:30, The subject of the conference is openEuler Virt SIG 6月例会 You can join the meeting at https://meeting.huaweicloud.com:36443/#/j/965679214 Add topics at https://etherpad.openeuler.org/p/Virt-meetings More information: https://www.openeuler.org/en/

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[PATCH qemu-8.2.0 v2 0/2] IPIV-BUGFIX for HIP12
by Jinqian Yang 16 May '25

16 May '25

Jinqian Yang (2): Revert "target/arm: Change arm_cpu_mp_affinity when enabled IPIV feature" target/arm: support the IPIV feature linux-headers/linux/kvm.h | 3 +-- target/arm/cpu.c | 22 +++------------------- target/arm/kvm.c | 17 +++++++++++++++++ 3 files changed, 21 insertions(+), 21 deletions(-) -- 2.33.0

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[PATCH qemu-8.2.0 0/2] IPIV-BUGFIX for HIP12
by Jinqian Yang 14 May '25

14 May '25

Patch#1 Revert "target/arm: Change arm_cpu_mp_affinity when enabled IPIV feature" Patch#2 target/arm: support the IPIV feature Jinqian Yang (2): Revert "target/arm: Change arm_cpu_mp_affinity when enabled IPIV feature" target/arm: support the IPIV feature linux-headers/linux/kvm.h | 2 -- target/arm/cpu.c | 22 +++------------------- target/arm/kvm.c | 17 +++++++++++++++++ 3 files changed, 20 insertions(+), 21 deletions(-) -- 2.33.0

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[PATCH qemu-8.2.0 0/1] Add support for IPIv
by Jinqian Yang 15 Apr '25

15 Apr '25

Patch#1 Change arm_cpu_mp_affinity when enabled IPIV feature Xiang Chen (1): target/arm: Change arm_cpu_mp_affinity when enabled IPIV feature linux-headers/linux/kvm.h | 1 + target/arm/cpu.c | 22 +++++++++++++++++++--- 2 files changed, 20 insertions(+), 3 deletions(-) -- 2.33.0

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[PATCH v1] hw/arm/virt: support the HDBSS feature
by Zhenyu Ye 10 Apr '25

10 Apr '25

From: eillon <yezhenyu2(a)huawei.com> We use QEMU to enable or disable the HDBSS feature during live migration. We can use the migration-parameter to control the size of the HDBSS buffer, such as: migrate_set_parameter hdbss-buffer-size 3 info migrate_parameters Signed-off-by: eillon <yezhenyu2(a)huawei.com> --- linux-headers/linux/kvm.h | 2 ++ migration/migration-hmp-cmds.c | 9 +++++++++ migration/migration.h | 7 +++++++ migration/options.c | 21 +++++++++++++++++++++ migration/options.h | 1 + migration/ram.c | 28 ++++++++++++++++++++++++++++ qapi/migration.json | 17 ++++++++++++++--- 7 files changed, 82 insertions(+), 3 deletions(-) diff --git a/linux-headers/linux/kvm.h b/linux-headers/linux/kvm.h index b94c5fd90f..57d6e12744 100644 --- a/linux-headers/linux/kvm.h +++ b/linux-headers/linux/kvm.h @@ -1212,6 +1212,8 @@ struct kvm_ppc_resize_hpt { /* support request to inject secret to CSV3 guest */ #define KVM_CAP_HYGON_COCO_EXT_CSV3_INJ_SECRET (1 << 2) +#define KVM_CAP_ARM_HW_DIRTY_STATE_TRACK 502 + #define KVM_CAP_ARM_VIRT_MSI_BYPASS 799 #define KVM_EXIT_HYPERCALL_VALID_MASK (1 << KVM_HC_MAP_GPA_RANGE) diff --git a/migration/migration-hmp-cmds.c b/migration/migration-hmp-cmds.c index aac5e7a73a..9857e2c97f 100644 --- a/migration/migration-hmp-cmds.c +++ b/migration/migration-hmp-cmds.c @@ -409,6 +409,11 @@ void hmp_info_migrate_parameters(Monitor *mon, const QDict *qdict) monitor_printf(mon, "%s: %s\n", MigrationParameter_str(MIGRATION_PARAMETER_SEV_AMD_CERT), params->sev_amd_cert); + + assert(params->has_hdbss_buffer_size); + monitor_printf(mon, "%s: %u\n", + MigrationParameter_str(MIGRATION_PARAMETER_HDBSS_BUFFER_SIZE), + params->hdbss_buffer_size); } qapi_free_MigrationParameters(params); @@ -725,6 +730,10 @@ void hmp_migrate_set_parameter(Monitor *mon, const QDict *qdict) p->sev_amd_cert->type = QTYPE_QSTRING; visit_type_str(v, param, &p->sev_amd_cert->u.s, &err); break; + case MIGRATION_PARAMETER_HDBSS_BUFFER_SIZE: + p->has_hdbss_buffer_size = true; + visit_type_uint8(v, param, &p->hdbss_buffer_size, &err); + break; default: assert(0); } diff --git a/migration/migration.h b/migration/migration.h index eeddb7c0bd..4a95f00157 100644 --- a/migration/migration.h +++ b/migration/migration.h @@ -48,6 +48,13 @@ struct PostcopyBlocktimeContext; */ #define CLEAR_BITMAP_SHIFT_MAX 31 +/* + * The default HDBSS size. The value ranges [0, 9]. + * Set to 0 to disable the HDBSS feature. + */ +#define DEFAULT_HDBSS_BUFFER_SIZE 0 +#define MAX_HDBSS_BUFFER_SIZE 9 + /* This is an abstraction of a "temp huge page" for postcopy's purpose */ typedef struct { /* diff --git a/migration/options.c b/migration/options.c index 71e71ea801..71645c8721 100644 --- a/migration/options.c +++ b/migration/options.c @@ -186,6 +186,9 @@ Property migration_properties[] = { DEFINE_PROP_STRING("sev-pdh", MigrationState, parameters.sev_pdh), DEFINE_PROP_STRING("sev-plat-cert", MigrationState, parameters.sev_plat_cert), DEFINE_PROP_STRING("sev-amd-cert", MigrationState, parameters.sev_amd_cert), + DEFINE_PROP_UINT8("hdbss-buffer-size", MigrationState, + parameters.hdbss_buffer_size, + DEFAULT_HDBSS_BUFFER_SIZE), /* Migration capabilities */ DEFINE_PROP_MIG_CAP("x-xbzrle", MIGRATION_CAPABILITY_XBZRLE), @@ -853,6 +856,13 @@ MigMode migrate_mode(void) return s->parameters.mode; } +int migrate_hdbss_buffer_size(void) +{ + MigrationState *s = migrate_get_current(); + + return s->parameters.hdbss_buffer_size; +} + int migrate_multifd_channels(void) { MigrationState *s = migrate_get_current(); @@ -1032,6 +1042,8 @@ MigrationParameters *qmp_query_migrate_parameters(Error **errp) params->vcpu_dirty_limit = s->parameters.vcpu_dirty_limit; params->has_mode = true; params->mode = s->parameters.mode; + params->has_hdbss_buffer_size = true; + params->hdbss_buffer_size = s->parameters.hdbss_buffer_size; return params; } @@ -1069,6 +1081,7 @@ void migrate_params_init(MigrationParameters *params) params->has_x_vcpu_dirty_limit_period = true; params->has_vcpu_dirty_limit = true; params->has_mode = true; + params->has_hdbss_buffer_size = true; params->sev_pdh = g_strdup(""); params->sev_plat_cert = g_strdup(""); @@ -1415,6 +1428,10 @@ static void migrate_params_test_apply(MigrateSetParameters *params, assert(params->sev_amd_cert->type == QTYPE_QSTRING); dest->sev_amd_cert = params->sev_amd_cert->u.s; } + + if (params->has_hdbss_buffer_size) { + dest->hdbss_buffer_size = params->hdbss_buffer_size; + } } static void migrate_params_apply(MigrateSetParameters *params, Error **errp) @@ -1579,6 +1596,10 @@ static void migrate_params_apply(MigrateSetParameters *params, Error **errp) assert(params->sev_amd_cert->type == QTYPE_QSTRING); s->parameters.sev_amd_cert = g_strdup(params->sev_amd_cert->u.s); } + + if (params->has_hdbss_buffer_size) { + s->parameters.hdbss_buffer_size = params->hdbss_buffer_size; + } } void qmp_migrate_set_parameters(MigrateSetParameters *params, Error **errp) diff --git a/migration/options.h b/migration/options.h index 9aca5e41ad..987fc81a18 100644 --- a/migration/options.h +++ b/migration/options.h @@ -85,6 +85,7 @@ uint64_t migrate_max_bandwidth(void); uint64_t migrate_avail_switchover_bandwidth(void); uint64_t migrate_max_postcopy_bandwidth(void); MigMode migrate_mode(void); +int migrate_hdbss_buffer_size(void); int migrate_multifd_channels(void); MultiFDCompression migrate_multifd_compression(void); int migrate_multifd_zlib_level(void); diff --git a/migration/ram.c b/migration/ram.c index 1f9348fd06..fcef466595 100644 --- a/migration/ram.c +++ b/migration/ram.c @@ -39,6 +39,7 @@ #include "migration-stats.h" #include "migration/register.h" #include "migration/misc.h" +#include "migration/options.h" #include "qemu-file.h" #include "postcopy-ram.h" #include "page_cache.h" @@ -2790,6 +2791,31 @@ static void xbzrle_cleanup(void) XBZRLE_cache_unlock(); } +static void kvm_update_hdbss_cap(bool enable) +{ + KVMState *s = kvm_state; + int size, ret; + + if (!kvm_check_extension(s, KVM_CAP_ARM_HW_DIRTY_STATE_TRACK)) { + return; + } + + size = migrate_hdbss_buffer_size(); + if (size < 0 || size > MAX_HDBSS_BUFFER_SIZE) { + fprintf(stderr, "Invalid hdbss buffer size: %d\n", size); + return; + } + + ret = kvm_vm_enable_cap(s, KVM_CAP_ARM_HW_DIRTY_STATE_TRACK, 0, + enable ? size : 0); + if (ret) { + fprintf(stderr, "Could not %s KVM_CAP_ARM_HW_DIRTY_STATE_TRACK: %d\n", + enable ? "enable" : "disable", ret); + } + + return; +} + static void ram_save_cleanup(void *opaque) { RAMState **rsp = opaque; @@ -2806,6 +2832,7 @@ static void ram_save_cleanup(void *opaque) * memory_global_dirty_log_stop will assert that * memory_global_dirty_log_start/stop used in pairs */ + kvm_update_hdbss_cap(false); memory_global_dirty_log_stop(GLOBAL_DIRTY_MIGRATION); } } @@ -3209,6 +3236,7 @@ static void ram_init_bitmaps(RAMState *rs) ram_list_init_bitmaps(); /* We don't use dirty log with background snapshots */ if (!migrate_background_snapshot()) { + kvm_update_hdbss_cap(true); memory_global_dirty_log_start(GLOBAL_DIRTY_MIGRATION); migration_bitmap_sync_precopy(rs, false); } diff --git a/qapi/migration.json b/qapi/migration.json index 3aed216c3b..f672da5c0d 100644 --- a/qapi/migration.json +++ b/qapi/migration.json @@ -902,6 +902,9 @@ # @sev-amd-cert: AMD certificate chain which include ASK and OCA encoded in # base64, or vendor cert filename for hygon (Since 4.2) # +# @hdbss-buffer-size: Size of the HDBSS(Hardware Dirty state tracking Structure). +# Defaults to 0. (Since 8.6) +# # Features: # # @deprecated: Member @block-incremental is deprecated. Use @@ -937,7 +940,7 @@ { 'name': 'x-vcpu-dirty-limit-period', 'features': ['unstable'] }, 'vcpu-dirty-limit', 'mode', - 'sev-pdh', 'sev-plat-cert', 'sev-amd-cert'] } + 'sev-pdh', 'sev-plat-cert', 'sev-amd-cert', 'hdbss-buffer-size'] } ## # @MigrateSetParameters: @@ -1106,6 +1109,9 @@ # @sev-amd-cert: AMD certificate chain which include ASK and OCA encoded in # base64, or vendor cert filename for hygon (Since 4.2) # +# @hdbss-buffer-size: Size of the HDBSS(Hardware Dirty state tracking Structure). +# Defaults to 0. (Since 8.6) +# # Features: # # @deprecated: Member @block-incremental is deprecated. Use @@ -1165,7 +1171,8 @@ '*mode': 'MigMode', '*sev-pdh': 'StrOrNull', '*sev-plat-cert': 'StrOrNull', - '*sev-amd-cert' : 'StrOrNull' } } + '*sev-amd-cert' : 'StrOrNull', + '*hdbss-buffer-size': 'uint8'} } ## @@ -1355,6 +1362,9 @@ # @sev-amd-cert: AMD certificate chain which include ASK and OCA encoded in # base64, or vendor cert filename for hygon (Since 4.2) # +# @hdbss-buffer-size: Size of the HDBSS(Hardware Dirty state tracking Structure). +# Defaults to 0. (Since 8.6) +# # Features: # # @deprecated: Member @block-incremental is deprecated. Use @@ -1410,7 +1420,8 @@ '*mode': 'MigMode', '*sev-pdh': 'str', '*sev-plat-cert': 'str', - '*sev-amd-cert' : 'str'} } + '*sev-amd-cert' : 'str', + '*hdbss-buffer-size': 'uint8'} } ## # @query-migrate-parameters: -- 2.39.3

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撤回: [PATCH] [BigDipperV5R9][Virtualization] Move submodules from gitlab into codehub
by yangjinqian 13 Mar '25

13 Mar '25

yangjinqian 将撤回邮件“[PATCH] [BigDipperV5R9][Virtualization] Move submodules from gitlab into codehub”。

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撤回: [PATCH] [BigDipperV5R9][Virtualization] Move submodules from gitlab into codehub
by yangjinqian 13 Mar '25

13 Mar '25

yangjinqian 将撤回邮件“[PATCH] [BigDipperV5R9][Virtualization] Move submodules from gitlab into codehub”。

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[PATCH qemu-8.2.0 0/9] Add support for heterogeneous live migration in QEMU
by yangjinqian 13 Mar '25

13 Mar '25

Patch#1 target/arm: Introduce a kunpeng CPU model Patch#2 target/arm: Add support for KVM_ARM_GET_REG_WRITABLE_MASKS Patch#3 target/arm: Retrieve additional register information from host Patch#4 target/arm: Update kunpeng 920 register to a common minimum feature list Patch#5 target/arm: Write ID register CPU state values to list Patch#6 target/arm: Ignore invariant register write errors Patch#7 target/arm: Disable SVE extensions when SVE is disabled Patch#8 target/arm: Add ID_AA64MMFR3_EL1 Patch#9 target/arm: update cpu->prop_pauth after change isar2 value Marcin Juszkiewicz (1): target/arm: Disable SVE extensions when SVE is disabled Shameer Kolothum (6): target/arm: Introduce a kunpeng CPU model target/arm: Add support for KVM_ARM_GET_REG_WRITABLE_MASKS target/arm: Retrieve additional register information from host target/arm: Update kunpeng 920 register to a common minimum feature list target/arm: Write ID register CPU state values to list target/arm: Ignore invariant register write errors yangjinqian (2): target/arm: Add ID_AA64MMFR3_EL1 target/arm: update cpu->prop_pauth after change isar2 value hw/arm/virt.c | 3 ++ target/arm/cpregs.h | 9 ++++++ target/arm/cpu.h | 20 +++++++++++++ target/arm/cpu64.c | 22 ++++++++++++++ target/arm/helper.c | 58 +++++++++++++++++++++++++----------- target/arm/hvf/hvf.c | 2 ++ target/arm/kunpeng920-regs.c | 55 ++++++++++++++++++++++++++++++++++ target/arm/kvm.c | 19 ++++++++++++ target/arm/kvm64.c | 21 +++++++++++++ target/arm/kvm_arm.h | 4 +++ target/arm/meson.build | 2 +- 11 files changed, 196 insertions(+), 19 deletions(-) create mode 100644 target/arm/kunpeng920-regs.c -- 2.33.0

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