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c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1719264386; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=KYT4dOrN3Vp2k1iABVro0ON5vu1Q2muFTg3+MAFO9sg=; b=i4u+U/5q8qzLQPx3FNleWoIJs4PPnI9ntnCQH/DkNLJNkEnOWAnCwWvus2V4g9n9GEYlsM 4m3uqZsF48s2JeRQQNgD2fYM7CxRf1cAjLOQbwau2U2JbmTCKy8AnR0FUTXnEiTU6Sbfk8 vSkPC1zZ/6FWHbk7FOMXtkbhWRhuK8U= X-MC-Unique: qAUihu_eMnigFkv8Wq56sA-1 From: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= To: qemu-devel@nongnu.org Cc: Alex Williamson , =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= , Zhenzhong Duan , Eric Auger Subject: [PULL 33/42] vfio/container: Introduce vfio_get_iommu_class_name() Date: Mon, 24 Jun 2024 23:24:47 +0200 Message-ID: <20240624212456.350919-34-clg@redhat.com> In-Reply-To: <20240624212456.350919-1-clg@redhat.com> References: <20240624212456.350919-1-clg@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.0 on 10.30.177.17 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=clg@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: 10 X-Spam_score: 1.0 X-Spam_bar: + X-Spam_report: (1.0 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.207, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_SBL_CSS=3.335, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no 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: 1719264514450100001 Rework vfio_get_iommu_class() to return a literal class name instead of a class object. We will need this name to instantiate the object later on. Since the default case asserts, remove the error report as QEMU will simply abort before. Reviewed-by: Zhenzhong Duan Reviewed-by: Eric Auger Tested-by: Eric Auger Signed-off-by: C=C3=A9dric Le Goater --- hw/vfio/container.c | 18 ++++++------------ 1 file changed, 6 insertions(+), 12 deletions(-) diff --git a/hw/vfio/container.c b/hw/vfio/container.c index 589f37bc6d68dae18f9e46371f14d6952b2240c0..bb6abe60ee29d5b69b494523c90= 02f53e1b2a3c8 100644 --- a/hw/vfio/container.c +++ b/hw/vfio/container.c @@ -373,24 +373,20 @@ static int vfio_get_iommu_type(int container_fd, /* * vfio_get_iommu_ops - get a VFIOIOMMUClass associated with a type */ -static const VFIOIOMMUClass *vfio_get_iommu_class(int iommu_type, Error **= errp) +static const char *vfio_get_iommu_class_name(int iommu_type) { - ObjectClass *klass =3D NULL; - switch (iommu_type) { case VFIO_TYPE1v2_IOMMU: case VFIO_TYPE1_IOMMU: - klass =3D object_class_by_name(TYPE_VFIO_IOMMU_LEGACY); + return TYPE_VFIO_IOMMU_LEGACY; break; case VFIO_SPAPR_TCE_v2_IOMMU: case VFIO_SPAPR_TCE_IOMMU: - klass =3D object_class_by_name(TYPE_VFIO_IOMMU_SPAPR); + return TYPE_VFIO_IOMMU_SPAPR; break; default: g_assert_not_reached(); }; - - return VFIO_IOMMU_CLASS(klass); } =20 static bool vfio_set_iommu(VFIOContainer *container, int group_fd, @@ -398,6 +394,7 @@ static bool vfio_set_iommu(VFIOContainer *container, in= t group_fd, { int iommu_type; const VFIOIOMMUClass *vioc; + const char *vioc_name; =20 iommu_type =3D vfio_get_iommu_type(container->fd, errp); if (iommu_type < 0) { @@ -426,11 +423,8 @@ static bool vfio_set_iommu(VFIOContainer *container, i= nt group_fd, =20 container->iommu_type =3D iommu_type; =20 - vioc =3D vfio_get_iommu_class(iommu_type, errp); - if (!vioc) { - error_setg(errp, "No available IOMMU models"); - return false; - } + vioc_name =3D vfio_get_iommu_class_name(iommu_type); + vioc =3D VFIO_IOMMU_CLASS(object_class_by_name(vioc_name)); =20 vfio_container_init(&container->bcontainer, vioc); return true; --=20 2.45.2