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a="76140700" X-IronPort-AV: E=Sophos;i="6.23,157,1770624000"; d="scan'208";a="76140700" X-CSE-ConnectionGUID: RAgMnMFBQhOnMme+l00PZw== X-CSE-MsgGUID: sX4x4nkSSK6VrsiAFlnkDA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,157,1770624000"; d="scan'208";a="223884968" 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@bull.com, kevin.tian@intel.com, yi.l.liu@intel.com, xudong.hao@intel.com, Zhenzhong Duan Subject: [PATCH v3 14/14] intel_iommu: Expose flag VIOMMU_FLAG_PASID_SUPPORTED when configured Date: Thu, 2 Apr 2026 23:55:38 -0400 Message-ID: <20260403035541.18355-15-zhenzhong.duan@intel.com> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260403035541.18355-1-zhenzhong.duan@intel.com> References: <20260403035541.18355-1-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=198.175.65.19; envelope-from=zhenzhong.duan@intel.com; helo=mgamail.intel.com X-Spam_score_int: -48 X-Spam_score: -4.9 X-Spam_bar: ---- X-Spam_report: (-4.9 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.542, 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_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_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: 1775188663520158500 Content-Type: text/plain; charset="utf-8" VFIO device will check flag VIOMMU_FLAG_PASID_SUPPORTED and expose PASID capability, or else guest could not enable PASID of this device even if vIOMMU's pasid is configured. This is the final knob to enable PASID. Signed-off-by: Zhenzhong Duan Tested-by: Xudong Hao --- hw/i386/intel_iommu.c | 1 + 1 file changed, 1 insertion(+) diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index abcb0df5d9..3cb8a547c7 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -4794,6 +4794,7 @@ static uint64_t vtd_get_viommu_flags(void *opaque) uint64_t flags; =20 flags =3D s->fsts ? VIOMMU_FLAG_WANT_NESTING_PARENT : 0; + flags |=3D s->pasid ? VIOMMU_FLAG_PASID_SUPPORTED : 0; =20 return flags; } --=20 2.47.3