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helo=lists.gnu.org; Received-SPF: pass client-ip=80.78.11.85; envelope-from=clement.mathieu--drif@eviden.com; helo=smarthost4.eviden.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, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, 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: 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 @eviden.com) X-ZM-MESSAGEID: 1714663934054100001 Signed-off-by: Cl=C3=A9ment Mathieu--Drif --- hw/i386/intel_iommu.c | 42 ++++++++++++++++++++++++++++++---- hw/i386/intel_iommu_internal.h | 10 ++++++++ 2 files changed, 47 insertions(+), 5 deletions(-) diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index fe97930774..e7c1a5582a 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -4344,11 +4344,43 @@ static void do_invalidate_device_tlb(VTDAddressSpac= e *vtd_dev_as, static bool vtd_process_device_piotlb_desc(IntelIOMMUState *s, VTDInvDesc *inv_desc) { - /* - * no need to handle it for passthru device, for emulated - * devices with device tlb, it may be required, but for now, - * return is enough - */ + uint16_t sid; + VTDAddressSpace *vtd_dev_as; + bool size; + bool global; + hwaddr addr; + uint32_t pasid; + + if ((inv_desc->hi & VTD_INV_DESC_PASID_DEVICE_IOTLB_RSVD_HI) || + (inv_desc->lo & VTD_INV_DESC_PASID_DEVICE_IOTLB_RSVD_LO)) { + error_report_once("%s: invalid pasid-based dev iotlb inv desc:" + "hi=3D%"PRIx64 "(reserved nonzero)", + __func__, inv_desc->hi); + return false; + } + + global =3D VTD_INV_DESC_PASID_DEVICE_IOTLB_GLOBAL(inv_desc->hi); + size =3D VTD_INV_DESC_PASID_DEVICE_IOTLB_SIZE(inv_desc->hi); + addr =3D VTD_INV_DESC_PASID_DEVICE_IOTLB_ADDR(inv_desc->hi); + sid =3D VTD_INV_DESC_PASID_DEVICE_IOTLB_SID(inv_desc->lo); + if (global) { + QLIST_FOREACH(vtd_dev_as, &s->vtd_as_with_notifiers, next) { + if ((vtd_dev_as->pasid !=3D PCI_NO_PASID) && + (PCI_BUILD_BDF(pci_bus_num(vtd_dev_as->bus), + vtd_dev_as->devfn) =3D=3D sid))= { + do_invalidate_device_tlb(vtd_dev_as, size, addr); + } + } + } else { + pasid =3D VTD_INV_DESC_PASID_DEVICE_IOTLB_PASID(inv_desc->lo); + vtd_dev_as =3D vtd_get_as_by_sid_and_pasid(s, sid, pasid); + if (!vtd_dev_as) { + return true; + } + + do_invalidate_device_tlb(vtd_dev_as, size, addr); + } + return true; } =20 diff --git a/hw/i386/intel_iommu_internal.h b/hw/i386/intel_iommu_internal.h index d63ff049a7..3d59e10488 100644 --- a/hw/i386/intel_iommu_internal.h +++ b/hw/i386/intel_iommu_internal.h @@ -424,6 +424,16 @@ typedef union VTDInvDesc VTDInvDesc; #define VTD_INV_DESC_DEVICE_IOTLB_RSVD_HI 0xffeULL #define VTD_INV_DESC_DEVICE_IOTLB_RSVD_LO 0xffff0000ffe0fff8 =20 +/* Mask for PASID Device IOTLB Invalidate Descriptor */ +#define VTD_INV_DESC_PASID_DEVICE_IOTLB_ADDR(val) ((val) & \ + 0xfffffffffffff000ULL) +#define VTD_INV_DESC_PASID_DEVICE_IOTLB_SIZE(val) ((val >> 11) & 0x1) +#define VTD_INV_DESC_PASID_DEVICE_IOTLB_GLOBAL(val) ((val) & 0x1) +#define VTD_INV_DESC_PASID_DEVICE_IOTLB_SID(val) (((val) >> 16) & 0xffffUL= L) +#define VTD_INV_DESC_PASID_DEVICE_IOTLB_PASID(val) ((val >> 32) & 0xfffffU= LL) +#define VTD_INV_DESC_PASID_DEVICE_IOTLB_RSVD_HI 0x7feULL +#define VTD_INV_DESC_PASID_DEVICE_IOTLB_RSVD_LO 0xfff000000000f000ULL + /* Rsvd field masks for spte */ #define VTD_SPTE_SNP 0x800ULL =20 --=20 2.44.0