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a="96910440" X-IronPort-AV: E=Sophos;i="6.21,273,1763452800"; d="scan'208";a="96910440" X-CSE-ConnectionGUID: utthaBveTzKQiIKUjIztVA== X-CSE-MsgGUID: CdWs4sk0T2ebUtcznXbuIA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.21,273,1763452800"; d="scan'208";a="209651999" From: Zhenzhong Duan To: qemu-devel@nongnu.org Cc: alex@shazbot.org, clg@redhat.com, eric.auger@redhat.com, mst@redhat.com, jasowang@redhat.com, jgg@nvidia.com, nicolinc@nvidia.com, skolothumtho@nvidia.com, joao.m.martins@oracle.com, clement.mathieu--drif@eviden.com, kevin.tian@intel.com, yi.l.liu@intel.com, xudong.hao@intel.com, Zhenzhong Duan Subject: [RFC PATCH 04/14] intel_iommu: Create the nested hwpt with IOMMU_HWPT_ALLOC_PASID flag Date: Wed, 4 Feb 2026 22:11:22 -0500 Message-ID: <20260205031133.74357-5-zhenzhong.duan@intel.com> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260205031133.74357-1-zhenzhong.duan@intel.com> References: <20260205031133.74357-1-zhenzhong.duan@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable 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=192.198.163.7; envelope-from=zhenzhong.duan@intel.com; helo=mgamail.intel.com X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 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_MED=-2.3, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=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: 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 @intel.com) X-ZM-MESSAGEID: 1770261190826158500 Content-Type: text/plain; charset="utf-8" When pasid is enabled, any hwpt attached to non-PASID or PASID should be IOMMU_HWPT_ALLOC_PASID flagged, or else attachment fails. Signed-off-by: Zhenzhong Duan --- hw/i386/intel_iommu_accel.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/hw/i386/intel_iommu_accel.c b/hw/i386/intel_iommu_accel.c index 67d54849f2..d61cfec1e6 100644 --- a/hw/i386/intel_iommu_accel.c +++ b/hw/i386/intel_iommu_accel.c @@ -69,11 +69,13 @@ VTDHostIOMMUDevice *vtd_find_hiod_iommufd(VTDAddressSpa= ce *as) return NULL; } =20 -static bool vtd_create_fs_hwpt(HostIOMMUDeviceIOMMUFD *idev, +static bool vtd_create_fs_hwpt(VTDHostIOMMUDevice *vtd_hiod, VTDPASIDEntry *pe, uint32_t *fs_hwpt_id, Error **errp) { + HostIOMMUDeviceIOMMUFD *idev =3D HOST_IOMMU_DEVICE_IOMMUFD(vtd_hiod->h= iod); struct iommu_hwpt_vtd_s1 vtd =3D {}; + uint32_t flags =3D vtd_hiod->iommu_state->pasid ? IOMMU_HWPT_ALLOC_PAS= ID : 0; =20 vtd.flags =3D (VTD_SM_PASID_ENTRY_SRE(pe) ? IOMMU_VTD_S1_SRE : 0) | (VTD_SM_PASID_ENTRY_WPE(pe) ? IOMMU_VTD_S1_WPE : 0) | @@ -82,8 +84,8 @@ static bool vtd_create_fs_hwpt(HostIOMMUDeviceIOMMUFD *id= ev, vtd.pgtbl_addr =3D (uint64_t)vtd_pe_get_fspt_base(pe); =20 return iommufd_backend_alloc_hwpt(idev->iommufd, idev->devid, idev->hw= pt_id, - 0, IOMMU_HWPT_DATA_VTD_S1, sizeof(vt= d), - &vtd, fs_hwpt_id, errp); + flags, IOMMU_HWPT_DATA_VTD_S1, + sizeof(vtd), &vtd, fs_hwpt_id, errp); } =20 static void vtd_destroy_old_fs_hwpt(HostIOMMUDeviceIOMMUFD *idev, @@ -116,7 +118,7 @@ static bool vtd_device_attach_iommufd(VTDHostIOMMUDevic= e *vtd_hiod, } =20 if (vtd_pe_pgtt_is_fst(pe)) { - if (!vtd_create_fs_hwpt(idev, pe, &hwpt_id, errp)) { + if (!vtd_create_fs_hwpt(vtd_hiod, pe, &hwpt_id, errp)) { return false; } } --=20 2.47.3