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c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1768297099; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=+0UF7ynqYRkpmQCabpzEd+x3V7/Hjn5OOWN/GopW2PE=; b=KSO1qANdr8Ef47cTgDwi2AlId/SiZdCA4zqW+qwx70MakrEUgyl1yyobHxSvYjXFyAFZHL 8pOkbi6Z9YrPbYNN3G764aRUoWH/Z5SP2E8MegcwJ3TQ4Eh1eh+IVzGJGHF8/7Qg+w89Fn Dy4NzynGKtU6y87dZ+AMDdsizZdd4v0= X-MC-Unique: 9j9WU-usNH2VbzMjBU6Bkw-1 X-Mimecast-MFC-AGG-ID: 9j9WU-usNH2VbzMjBU6Bkw_1768297095 From: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= To: qemu-devel@nongnu.org Cc: Alex Williamson , Zhenzhong Duan , Eric Auger , Nicolin Chen , =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= Subject: [PULL 32/41] intel_iommu_accel: Implement get_host_iommu_quirks() callback Date: Tue, 13 Jan 2026 10:36:28 +0100 Message-ID: <20260113093637.1549214-33-clg@redhat.com> In-Reply-To: <20260113093637.1549214-1-clg@redhat.com> References: <20260113093637.1549214-1-clg@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 10.30.177.4 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 (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: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, 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_H2=0.001, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_PASS=-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: qemu development 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: 1768297352533158500 From: Zhenzhong Duan Implement get_host_iommu_quirks() callback to retrieve the vendor specific hardware information data and convert it into bitmaps defined with enum host_iommu_quirks. It will be used by VFIO in subsequent patch. Suggested-by: Eric Auger Suggested-by: Nicolin Chen Signed-off-by: Zhenzhong Duan Link: https://lore.kernel.org/qemu-devel/20260106062808.316574-3-zhenzhong.= duan@intel.com Signed-off-by: C=C3=A9dric Le Goater --- hw/i386/intel_iommu_accel.h | 5 +++++ hw/i386/intel_iommu.c | 2 ++ hw/i386/intel_iommu_accel.c | 21 +++++++++++++++++++++ 3 files changed, 28 insertions(+) diff --git a/hw/i386/intel_iommu_accel.h b/hw/i386/intel_iommu_accel.h index 6dec8788f18d0196550b3d0047dc5a5b29ed2c6b..e5f0b077b4b9ab7a58796107e78= ab8a7d0a0bd20 100644 --- a/hw/i386/intel_iommu_accel.h +++ b/hw/i386/intel_iommu_accel.h @@ -20,6 +20,7 @@ bool vtd_propagate_guest_pasid(VTDAddressSpace *vtd_as, E= rror **errp); void vtd_flush_host_piotlb_all_locked(IntelIOMMUState *s, uint16_t domain_= id, uint32_t pasid, hwaddr addr, uint64_t npages, bool ih); +void vtd_iommu_ops_update_accel(PCIIOMMUOps *ops); #else static inline bool vtd_check_hiod_accel(IntelIOMMUState *s, VTDHostIOMMUDevice *vtd_hiod, @@ -47,5 +48,9 @@ static inline void vtd_flush_host_piotlb_all_locked(Intel= IOMMUState *s, uint64_t npages, bool = ih) { } + +static inline void vtd_iommu_ops_update_accel(PCIIOMMUOps *ops) +{ +} #endif #endif diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index bb21ae1743d2bf0dc91c4fc18026f449a290814b..e8a6f50a5a03e71b5f6025dce5f= 9510e0a31f020 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -5590,6 +5590,8 @@ static void vtd_class_init(ObjectClass *klass, const = void *data) x86_class->int_remap =3D vtd_int_remap; set_bit(DEVICE_CATEGORY_MISC, dc->categories); dc->desc =3D "Intel IOMMU (VT-d) DMA Remapping device"; + + vtd_iommu_ops_update_accel(&vtd_iommu_ops); } =20 static const TypeInfo vtd_info =3D { diff --git a/hw/i386/intel_iommu_accel.c b/hw/i386/intel_iommu_accel.c index 250232b5a979e9b34d161fde554fd0c64b0cd3d9..67d54849f2f08187629fca5e2c0= 81f8dd003b6b2 100644 --- a/hw/i386/intel_iommu_accel.c +++ b/hw/i386/intel_iommu_accel.c @@ -12,6 +12,7 @@ #include "system/iommufd.h" #include "intel_iommu_internal.h" #include "intel_iommu_accel.h" +#include "hw/core/iommu.h" #include "hw/pci/pci_bus.h" #include "trace.h" =20 @@ -249,3 +250,23 @@ void vtd_flush_host_piotlb_all_locked(IntelIOMMUState = *s, uint16_t domain_id, g_hash_table_foreach(s->vtd_address_spaces, vtd_flush_host_piotlb_locked, &piotlb_info); } + +static uint64_t vtd_get_host_iommu_quirks(uint32_t type, + void *caps, uint32_t size) +{ + struct iommu_hw_info_vtd *vtd =3D caps; + uint64_t quirks =3D 0; + + if (type =3D=3D IOMMU_HW_INFO_TYPE_INTEL_VTD && + sizeof(struct iommu_hw_info_vtd) <=3D size && + vtd->flags & IOMMU_HW_INFO_VTD_ERRATA_772415_SPR17) { + quirks |=3D HOST_IOMMU_QUIRK_NESTING_PARENT_BYPASS_RO; + } + + return quirks; +} + +void vtd_iommu_ops_update_accel(PCIIOMMUOps *ops) +{ + ops->get_host_iommu_quirks =3D vtd_get_host_iommu_quirks; +} --=20 2.52.0