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c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1721743292; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=L6LWwZ8d6VyWjINBiX1CtuubsP8TwW3ib6HhJI4FC6s=; b=CvHujRSrZohJ51tUL7+sDXnPE/Lzxe/Ycoc3h5jpW348oM9RvDI7/mvfq/7uzIJzGDrpnH N4BqOpb0+svcvAhjhZy6BXL2HrwsJnIBGJ9+x5eKyT9FP8KmF0dhRfPVD0C3SowMEpi8FQ PWQXkd2+0WtMwwkUhBy2tWZA9H+zMZQ= X-MC-Unique: 6-I4wl4FNtCfYLsNybey0Q-1 From: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= To: qemu-devel@nongnu.org Cc: Alex Williamson , Joao Martins , Zhenzhong Duan , Eric Auger Subject: [PULL 13/16] vfio/iommufd: Implement VFIOIOMMUClass::set_dirty_tracking support Date: Tue, 23 Jul 2024 16:00:16 +0200 Message-ID: <20240723140019.387786-14-clg@redhat.com> In-Reply-To: <20240723140019.387786-1-clg@redhat.com> References: <20240723140019.387786-1-clg@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.0 on 10.30.177.40 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.129.124; envelope-from=clg@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.133, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1721743309612116600 Content-Type: text/plain; charset="utf-8" From: Joao Martins ioctl(iommufd, IOMMU_HWPT_SET_DIRTY_TRACKING, arg) is the UAPI that enables or disables dirty page tracking. The ioctl is used if the hwpt has been created with dirty tracking supported domain (stored in hwpt::flags) and it is called on the whole list of iommu domains. Signed-off-by: Joao Martins Reviewed-by: Zhenzhong Duan Reviewed-by: Eric Auger --- include/sysemu/iommufd.h | 2 ++ backends/iommufd.c | 23 +++++++++++++++++++++++ hw/vfio/iommufd.c | 32 ++++++++++++++++++++++++++++++++ backends/trace-events | 1 + 4 files changed, 58 insertions(+) diff --git a/include/sysemu/iommufd.h b/include/sysemu/iommufd.h index e917e7591d050bd02945f6feb8d268e6d51d49aa..6fb412f61144e91ae0271029136= 8ec9d577832f8 100644 --- a/include/sysemu/iommufd.h +++ b/include/sysemu/iommufd.h @@ -55,6 +55,8 @@ bool iommufd_backend_alloc_hwpt(IOMMUFDBackend *be, uint3= 2_t dev_id, uint32_t data_type, uint32_t data_len, void *data_ptr, uint32_t *out_hwpt, Error **errp); +bool iommufd_backend_set_dirty_tracking(IOMMUFDBackend *be, uint32_t hwpt_= id, + bool start, Error **errp); =20 #define TYPE_HOST_IOMMU_DEVICE_IOMMUFD TYPE_HOST_IOMMU_DEVICE "-iommufd" #endif diff --git a/backends/iommufd.c b/backends/iommufd.c index 06b135111f303ca95d55dc0f71ad3bbb76211337..b9788350388481f449b1969366e= fa8d7766fc080 100644 --- a/backends/iommufd.c +++ b/backends/iommufd.c @@ -238,6 +238,29 @@ bool iommufd_backend_alloc_hwpt(IOMMUFDBackend *be, ui= nt32_t dev_id, return true; } =20 +bool iommufd_backend_set_dirty_tracking(IOMMUFDBackend *be, + uint32_t hwpt_id, bool start, + Error **errp) +{ + int ret; + struct iommu_hwpt_set_dirty_tracking set_dirty =3D { + .size =3D sizeof(set_dirty), + .hwpt_id =3D hwpt_id, + .flags =3D start ? IOMMU_HWPT_DIRTY_TRACKING_ENABLE : 0, + }; + + ret =3D ioctl(be->fd, IOMMU_HWPT_SET_DIRTY_TRACKING, &set_dirty); + trace_iommufd_backend_set_dirty(be->fd, hwpt_id, start, ret ? errno : = 0); + if (ret) { + error_setg_errno(errp, errno, + "IOMMU_HWPT_SET_DIRTY_TRACKING(hwpt_id %u) failed= ", + hwpt_id); + return false; + } + + return true; +} + bool iommufd_backend_get_device_info(IOMMUFDBackend *be, uint32_t devid, uint32_t *type, void *data, uint32_t = len, uint64_t *caps, Error **errp) diff --git a/hw/vfio/iommufd.c b/hw/vfio/iommufd.c index 240c476eaf5b9b79090b6767c18316ade3b3b794..e39fbf4dd60a62321def4349fd7= 27da335d82d8d 100644 --- a/hw/vfio/iommufd.c +++ b/hw/vfio/iommufd.c @@ -115,6 +115,37 @@ static bool iommufd_hwpt_dirty_tracking(VFIOIOASHwpt *= hwpt) return hwpt && hwpt->hwpt_flags & IOMMU_HWPT_ALLOC_DIRTY_TRACKING; } =20 +static int iommufd_set_dirty_page_tracking(const VFIOContainerBase *bconta= iner, + bool start, Error **errp) +{ + const VFIOIOMMUFDContainer *container =3D + container_of(bcontainer, VFIOIOMMUFDContainer, bcontainer); + VFIOIOASHwpt *hwpt; + + QLIST_FOREACH(hwpt, &container->hwpt_list, next) { + if (!iommufd_hwpt_dirty_tracking(hwpt)) { + continue; + } + + if (!iommufd_backend_set_dirty_tracking(container->be, + hwpt->hwpt_id, start, errp= )) { + goto err; + } + } + + return 0; + +err: + QLIST_FOREACH(hwpt, &container->hwpt_list, next) { + if (!iommufd_hwpt_dirty_tracking(hwpt)) { + continue; + } + iommufd_backend_set_dirty_tracking(container->be, + hwpt->hwpt_id, !start, NULL); + } + return -EINVAL; +} + static int iommufd_cdev_getfd(const char *sysfs_path, Error **errp) { ERRP_GUARD(); @@ -739,6 +770,7 @@ static void vfio_iommu_iommufd_class_init(ObjectClass *= klass, void *data) vioc->attach_device =3D iommufd_cdev_attach; vioc->detach_device =3D iommufd_cdev_detach; vioc->pci_hot_reset =3D iommufd_cdev_pci_hot_reset; + vioc->set_dirty_page_tracking =3D iommufd_set_dirty_page_tracking; }; =20 static bool hiod_iommufd_vfio_realize(HostIOMMUDevice *hiod, void *opaque, diff --git a/backends/trace-events b/backends/trace-events index 4d8ac02fe7d6c6d3780dfef48406872ee46fd4df..28aca3b859d43f35511a95d6eba= 196046bfda835 100644 --- a/backends/trace-events +++ b/backends/trace-events @@ -16,3 +16,4 @@ iommufd_backend_unmap_dma(int iommufd, uint32_t ioas, uin= t64_t iova, uint64_t si iommufd_backend_alloc_ioas(int iommufd, uint32_t ioas) " iommufd=3D%d ioas= =3D%d" iommufd_backend_alloc_hwpt(int iommufd, uint32_t dev_id, uint32_t pt_id, u= int32_t flags, uint32_t hwpt_type, uint32_t len, uint64_t data_ptr, uint32_= t out_hwpt_id, int ret) " iommufd=3D%d dev_id=3D%u pt_id=3D%u flags=3D0x%x = hwpt_type=3D%u len=3D%u data_ptr=3D0x%"PRIx64" out_hwpt=3D%u (%d)" iommufd_backend_free_id(int iommufd, uint32_t id, int ret) " iommufd=3D%d = id=3D%d (%d)" +iommufd_backend_set_dirty(int iommufd, uint32_t hwpt_id, bool start, int r= et) " iommufd=3D%d hwpt=3D%u enable=3D%d (%d)" --=20 2.45.2