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a="78109564" X-IronPort-AV: E=Sophos;i="6.18,274,1751266800"; d="scan'208";a="78109564" X-CSE-ConnectionGUID: MTP1x3IyRL+SDYgmsG5aBA== X-CSE-MsgGUID: Ed1sULe5SKmXELVhHW61QQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.18,274,1751266800"; d="scan'208";a="175930503" From: Zhenzhong Duan To: qemu-devel@nongnu.org Cc: alex.williamson@redhat.com, clg@redhat.com, eric.auger@redhat.com, mst@redhat.com, jasowang@redhat.com, peterx@redhat.com, ddutile@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, chao.p.peng@intel.com, Zhenzhong Duan Subject: [PATCH v6 17/22] intel_iommu: Replay all pasid bindings when either SRTP or TE bit is changed Date: Thu, 18 Sep 2025 04:57:56 -0400 Message-ID: <20250918085803.796942-18-zhenzhong.duan@intel.com> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20250918085803.796942-1-zhenzhong.duan@intel.com> References: <20250918085803.796942-1-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=192.198.163.8; 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: 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: 1758186277931116600 Content-Type: text/plain; charset="utf-8" From: Yi Liu When either 'Set Root Table Pointer' or 'Translation Enable' bit is changed, all pasid bindings on host side become stale and need to be updated. Introduce a helper function vtd_replay_pasid_bindings_all() to go through a= ll pasid entries in all passthrough devices to update host side bindings. Signed-off-by: Yi Liu Signed-off-by: Zhenzhong Duan Reviewed-by: Eric Auger --- hw/i386/intel_iommu.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index 92548f9573..74496c7d3b 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -90,6 +90,7 @@ static void vtd_address_space_refresh_all(IntelIOMMUState= *s); static void vtd_address_space_unmap(VTDAddressSpace *as, IOMMUNotifier *n); static void vtd_pasid_cache_sync_locked(gpointer key, gpointer value, gpointer user_data); +static void vtd_replay_pasid_bindings_all(IntelIOMMUState *s); =20 static void vtd_pasid_cache_reset_locked(IntelIOMMUState *s) { @@ -2904,6 +2905,7 @@ static void vtd_handle_gcmd_srtp(IntelIOMMUState *s) vtd_set_clear_mask_long(s, DMAR_GSTS_REG, 0, VTD_GSTS_RTPS); vtd_reset_caches(s); vtd_address_space_refresh_all(s); + vtd_replay_pasid_bindings_all(s); } =20 /* Set Interrupt Remap Table Pointer */ @@ -2938,6 +2940,7 @@ static void vtd_handle_gcmd_te(IntelIOMMUState *s, bo= ol en) =20 vtd_reset_caches(s); vtd_address_space_refresh_all(s); + vtd_replay_pasid_bindings_all(s); } =20 /* Handle Interrupt Remap Enable/Disable */ @@ -3428,6 +3431,13 @@ static void vtd_pasid_cache_sync(IntelIOMMUState *s,= VTDPASIDCacheInfo *pc_info) vtd_iommu_unlock(s); } =20 +static void vtd_replay_pasid_bindings_all(IntelIOMMUState *s) +{ + VTDPASIDCacheInfo pc_info =3D { .type =3D VTD_INV_DESC_PASIDC_G_GLOBAL= }; + + vtd_pasid_cache_sync(s, &pc_info); +} + static bool vtd_process_pasid_desc(IntelIOMMUState *s, VTDInvDesc *inv_desc) { --=20 2.47.1