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a="96910515" X-IronPort-AV: E=Sophos;i="6.21,273,1763452800"; d="scan'208";a="96910515" X-CSE-ConnectionGUID: S8yN3RaWSfq9dsbcywbYJQ== X-CSE-MsgGUID: OltTE8ZESPCnazN5hdANsA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.21,273,1763452800"; d="scan'208";a="209652079" 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 11/14] intel_iommu_accel: drop _lock suffix in vtd_flush_host_piotlb_all_locked() Date: Wed, 4 Feb 2026 22:11:29 -0500 Message-ID: <20260205031133.74357-12-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: 1770261209389158500 Content-Type: text/plain; charset="utf-8" In order to support PASID, we have switched from looping vtd_as to vtd_hiod, vtd_hiod represents host passthrough device and never deferenced without BQ= L. So we don't need extra iommu lock to protect it. Signed-off-by: Zhenzhong Duan --- hw/i386/intel_iommu_accel.h | 14 +++++++------- hw/i386/intel_iommu.c | 7 ++++--- hw/i386/intel_iommu_accel.c | 6 +++--- 3 files changed, 14 insertions(+), 13 deletions(-) diff --git a/hw/i386/intel_iommu_accel.h b/hw/i386/intel_iommu_accel.h index 1ae46d9250..3f1b1002b8 100644 --- a/hw/i386/intel_iommu_accel.h +++ b/hw/i386/intel_iommu_accel.h @@ -24,9 +24,9 @@ typedef struct VTDACCELPASIDCacheEntry { bool vtd_check_hiod_accel(IntelIOMMUState *s, VTDHostIOMMUDevice *vtd_hiod, Error **errp); VTDHostIOMMUDevice *vtd_find_hiod_iommufd(VTDAddressSpace *as); -void vtd_flush_host_piotlb_all_locked(IntelIOMMUState *s, uint16_t domain_= id, - uint32_t pasid, hwaddr addr, - uint64_t npages, bool ih); +void vtd_flush_host_piotlb_all_accel(IntelIOMMUState *s, uint16_t domain_i= d, + uint32_t pasid, hwaddr addr, + uint64_t npages, bool ih); void vtd_pasid_cache_sync_accel(IntelIOMMUState *s, VTDPASIDCacheInfo *pc_= info); void vtd_pasid_cache_reset_accel(IntelIOMMUState *s); void vtd_iommu_ops_update_accel(PCIIOMMUOps *ops); @@ -51,10 +51,10 @@ static inline bool vtd_propagate_guest_pasid(VTDAddress= Space *vtd_as, return true; } =20 -static inline void vtd_flush_host_piotlb_all_locked(IntelIOMMUState *s, - uint16_t domain_id, - uint32_t pasid, hwaddr= addr, - uint64_t npages, bool = ih) +static inline void vtd_flush_host_piotlb_all_accel(IntelIOMMUState *s, + uint16_t domain_id, + uint32_t pasid, hwaddr = addr, + uint64_t npages, bool i= h) { } =20 diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index 1626c8f96b..17252c804b 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -2990,11 +2990,11 @@ static void vtd_piotlb_pasid_invalidate(IntelIOMMUS= tate *s, info.domain_id =3D domain_id; info.pasid =3D pasid; =20 + vtd_flush_host_piotlb_all_accel(s, domain_id, pasid, 0, (uint64_t)-1, + false); vtd_iommu_lock(s); g_hash_table_foreach_remove(s->iotlb, vtd_hash_remove_by_pasid, &info); - vtd_flush_host_piotlb_all_locked(s, domain_id, pasid, 0, (uint64_t)-1, - false); vtd_iommu_unlock(s); =20 QLIST_FOREACH(vtd_as, &s->vtd_as_with_notifiers, next) { @@ -3024,10 +3024,11 @@ static void vtd_piotlb_page_invalidate(IntelIOMMUSt= ate *s, uint16_t domain_id, info.addr =3D addr; info.mask =3D ~((1 << am) - 1); =20 + vtd_flush_host_piotlb_all_accel(s, domain_id, pasid, addr, 1 << am, ih= ); + vtd_iommu_lock(s); g_hash_table_foreach_remove(s->iotlb, vtd_hash_remove_by_page_piotlb, &info); - vtd_flush_host_piotlb_all_locked(s, domain_id, pasid, addr, 1 << am, i= h); vtd_iommu_unlock(s); =20 vtd_iotlb_page_invalidate_notify(s, domain_id, addr, am, pasid); diff --git a/hw/i386/intel_iommu_accel.c b/hw/i386/intel_iommu_accel.c index 5abc462a45..a30786e361 100644 --- a/hw/i386/intel_iommu_accel.c +++ b/hw/i386/intel_iommu_accel.c @@ -236,9 +236,9 @@ static void vtd_flush_host_piotlb(VTDACCELPASIDCacheEnt= ry *vtd_pce, } } =20 -void vtd_flush_host_piotlb_all_locked(IntelIOMMUState *s, uint16_t domain_= id, - uint32_t pasid, hwaddr addr, - uint64_t npages, bool ih) +void vtd_flush_host_piotlb_all_accel(IntelIOMMUState *s, uint16_t domain_i= d, + uint32_t pasid, hwaddr addr, + uint64_t npages, bool ih) { struct iommu_hwpt_vtd_s1_invalidate cache_info =3D { 0 }; VTDPIOTLBInvInfo piotlb_info; --=20 2.47.3