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bh=WCNHJBHzbGHJQEsUZ3hntYV04NWRORdIJ35ThpnGdQk=; b=G1T0+c51VP7KelqjuGKIGMPZrM2waJTSpZNpZ9rkHbskMMN5lKd9JVdNjfJLG6OG6wRu4Y i7iJHzZg/ZU0f9rrv/3lcRjPqaL3HhG5/B/dwq3t/b759LiC8zPDh2me76eOgfVJ3U4zQP 1CVGc8ALU9sMtbenKT1E/+E1RyqSR/k= X-MC-Unique: _caR6L-1Mfe0X5af4TX3gg-1 From: Eric Auger To: eric.auger.pro@gmail.com, eric.auger@redhat.com, qemu-devel@nongnu.org, qemu-arm@nongnu.org, mst@redhat.com, jean-philippe@linaro.org, imammedo@redhat.com, peter.maydell@linaro.org, clg@redhat.com, yanghliu@redhat.com, zhenzhong.duan@intel.com Cc: alex.williamson@redhat.com, jasowang@redhat.com, pbonzini@redhat.com, berrange@redhat.com Subject: [PATCH v8 2/9] virtio-iommu: Add a granule property Date: Thu, 7 Mar 2024 14:43:03 +0100 Message-ID: <20240307134445.92296-3-eric.auger@redhat.com> In-Reply-To: <20240307134445.92296-1-eric.auger@redhat.com> References: <20240307134445.92296-1-eric.auger@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.5 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=170.10.133.124; envelope-from=eric.auger@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -26 X-Spam_score: -2.7 X-Spam_bar: -- X-Spam_report: (-2.7 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.583, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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: 1709819386560100003 This allows to choose which granule will be used by default by the virtio-iommu. Current page size mask default is qemu_target_page_mask so this translates into a 4k granule on ARM and x86_64 where virtio-iommu is supported. Signed-off-by: Eric Auger Reviewed-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Zhenzhong Duan --- v4 -> v5: - use -(n * KiB) (Phild) v3 -> v4: - granule_mode introduction moved to that patch --- include/hw/virtio/virtio-iommu.h | 2 ++ hw/virtio/virtio-iommu.c | 28 +++++++++++++++++++++++++--- 2 files changed, 27 insertions(+), 3 deletions(-) diff --git a/include/hw/virtio/virtio-iommu.h b/include/hw/virtio/virtio-io= mmu.h index 781ebaea8f..67ea5022af 100644 --- a/include/hw/virtio/virtio-iommu.h +++ b/include/hw/virtio/virtio-iommu.h @@ -24,6 +24,7 @@ #include "hw/virtio/virtio.h" #include "hw/pci/pci.h" #include "qom/object.h" +#include "qapi/qapi-types-virtio.h" =20 #define TYPE_VIRTIO_IOMMU "virtio-iommu-device" #define TYPE_VIRTIO_IOMMU_PCI "virtio-iommu-pci" @@ -66,6 +67,7 @@ struct VirtIOIOMMU { bool boot_bypass; Notifier machine_done; bool granule_frozen; + GranuleMode granule_mode; }; =20 #endif diff --git a/hw/virtio/virtio-iommu.c b/hw/virtio/virtio-iommu.c index 86623d55a5..84d6819d3b 100644 --- a/hw/virtio/virtio-iommu.c +++ b/hw/virtio/virtio-iommu.c @@ -29,6 +29,7 @@ #include "sysemu/reset.h" #include "sysemu/sysemu.h" #include "qemu/reserved-region.h" +#include "qemu/units.h" #include "qapi/error.h" #include "qemu/error-report.h" #include "trace.h" @@ -1115,8 +1116,8 @@ static int virtio_iommu_notify_flag_changed(IOMMUMemo= ryRegion *iommu_mr, } =20 /* - * The default mask (TARGET_PAGE_MASK) is the smallest supported guest gra= nule, - * for example 0xfffffffffffff000. When an assigned device has page size + * The default mask depends on the "granule" property. For example, with + * 4k granule, it is -(4 * KiB). When an assigned device has page size * restrictions due to the hardware IOMMU configuration, apply this restri= ction * to the mask. */ @@ -1313,8 +1314,27 @@ static void virtio_iommu_device_realize(DeviceState = *dev, Error **errp) * in vfio realize */ s->config.bypass =3D s->boot_bypass; - s->config.page_size_mask =3D qemu_target_page_mask(); s->config.input_range.end =3D UINT64_MAX; + + switch (s->granule_mode) { + case GRANULE_MODE_4K: + s->config.page_size_mask =3D -(4 * KiB); + break; + case GRANULE_MODE_8K: + s->config.page_size_mask =3D -(8 * KiB); + break; + case GRANULE_MODE_16K: + s->config.page_size_mask =3D -(16 * KiB); + break; + case GRANULE_MODE_64K: + s->config.page_size_mask =3D -(64 * KiB); + break; + case GRANULE_MODE_HOST: + s->config.page_size_mask =3D qemu_real_host_page_mask(); + break; + default: + error_setg(errp, "Unsupported granule mode"); + } s->config.domain_range.end =3D UINT32_MAX; s->config.probe_size =3D VIOMMU_PROBE_SIZE; =20 @@ -1522,6 +1542,8 @@ static Property virtio_iommu_properties[] =3D { DEFINE_PROP_LINK("primary-bus", VirtIOIOMMU, primary_bus, TYPE_PCI_BUS, PCIBus *), DEFINE_PROP_BOOL("boot-bypass", VirtIOIOMMU, boot_bypass, true), + DEFINE_PROP_GRANULE_MODE("granule", VirtIOIOMMU, granule_mode, + GRANULE_MODE_4K), DEFINE_PROP_END_OF_LIST(), }; =20 --=20 2.41.0