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a="62504891" X-IronPort-AV: E=Sophos;i="6.19,252,1754982000"; d="scan'208";a="62504891" X-CSE-ConnectionGUID: NHy5Lj2xT1i3ZSbdkvro6g== X-CSE-MsgGUID: s86d/6/lRfWeFvpIfnSGQQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.19,252,1754982000"; d="scan'208";a="183985999" 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 v7 15/23] intel_iommu: Replay all pasid bindings when either SRTP or TE bit is changed Date: Fri, 24 Oct 2025 04:43:39 -0400 Message-ID: <20251024084349.102322-16-zhenzhong.duan@intel.com> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20251024084349.102322-1-zhenzhong.duan@intel.com> References: <20251024084349.102322-1-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; 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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 ef6477de53..1f78274204 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -92,6 +92,7 @@ struct vtd_iotlb_key { static void vtd_address_space_refresh_all(IntelIOMMUState *s); static void vtd_address_space_unmap(VTDAddressSpace *as, IOMMUNotifier *n); static int vtd_bind_guest_pasid(VTDAddressSpace *vtd_as, Error **errp); +static void vtd_replay_pasid_bindings_all(IntelIOMMUState *s); =20 static void vtd_pasid_cache_reset_locked(IntelIOMMUState *s) { @@ -2894,6 +2895,7 @@ 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 */ @@ -2928,6 +2930,7 @@ 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 */ @@ -3427,6 +3430,13 @@ 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