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bh=/TaCPJ+MPfa82rmpKnZdWF8W6+rxNRYkNlBjhJbwyqs=; b=T2WfGiDOqBNDjjdc+k2bs5UVVo3YBF9nBaKLsXiJvfJ7PmdBdmUiG41a6cEZX49q3+SAji Ad29n30dUub1P9ZoBEvtx5tCPCuP7dK0SOQ+UixQkUsE8ZHvpWBUDdLW5Sxw40KgVitArN Em0IdXCSIh3Qbc+rUjfDaOOH3Q5ftyY= X-MC-Unique: DoVBk-VnOt2EwB4kFmm4KA-1 From: Cindy Lu To: lulu@redhat.com, jasowang@redhat.com, mst@redhat.com Cc: qemu-devel@nongnu.org Subject: [PATCH v11 1/2] vhost-vdpa: Skip the range check while MR is IOMMU Date: Wed, 30 Nov 2022 13:32:50 +0800 Message-Id: <20221130053251.2606831-2-lulu@redhat.com> In-Reply-To: <20221130053251.2606831-1-lulu@redhat.com> References: <20221130053251.2606831-1-lulu@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.1 on 10.11.54.9 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=170.10.133.124; envelope-from=lulu@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 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_MSPIKE_H2=-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 @redhat.com) X-ZM-MESSAGEID: 1669786447675100001 Content-Type: text/plain; charset="utf-8" Skip the check in vhost_vdpa_listener_skipped_section() while MR is IOMMU, Move this check to vhost_vdpa_iommu_map_notify() Signed-off-by: Cindy Lu --- hw/virtio/vhost-vdpa.c | 21 ++++++++++++++------- 1 file changed, 14 insertions(+), 7 deletions(-) diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index 3ff9ce3501..f0e9963d19 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -60,15 +60,22 @@ static bool vhost_vdpa_listener_skipped_section(MemoryR= egionSection *section, iova_min, section->offset_within_address_space); return true; } + /* + * While using vIOMMU, Sometimes the section will be larger than iova_= max + * but the memory that actually mapping is smaller, So skip the check + * here. Will add the check in vhost_vdpa_iommu_map_notify, + *There is the real size that maps to the kernel + */ =20 - llend =3D vhost_vdpa_section_end(section); - if (int128_gt(llend, int128_make64(iova_max))) { - error_report("RAM section out of device range (max=3D0x%" PRIx64 - ", end addr=3D0x%" PRIx64 ")", - iova_max, int128_get64(llend)); - return true; + if (!memory_region_is_iommu(section->mr)) { + llend =3D vhost_vdpa_section_end(section); + if (int128_gt(llend, int128_make64(iova_max))) { + error_report("RAM section out of device range (max=3D0x%" PRIx= 64 + ", end addr=3D0x%" PRIx64 ")", + iova_max, int128_get64(llend)); + return true; + } } - return false; } =20 --=20 2.34.3