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bh=oQAUStExdwPZFM614DvnkC/Yix30Ravls5bcvZOKzk8=; b=H+DQXkza2DDBxOssAXbx63ulHhjX4Bx3qy3wnqPz1so8YN6S20FW5kzCrdPqyVSBzOCOPE bArX+xTuzjXd03ukQIDwU36WYMHmQlHpMxQGzWeFayusFQQyavfku77K0kdaKfLIHfJjV7 JcXGkbYTdZgBecH6271zRElsYXIPFMk= X-MC-Unique: zr7iORA8PPi2Q-_WSYLg4w-1 From: Thomas Huth To: qemu-devel@nongnu.org Cc: Stefan Hajnoczi , qemu-s390x@nongnu.org, Nina Schoetterl-Glausch Subject: [PULL 23/25] target/s390x/kvm: Turn KVM_CAP_SYNC_REGS into a hard requirement Date: Wed, 18 Oct 2023 15:07:14 +0200 Message-ID: <20231018130716.286638-24-thuth@redhat.com> In-Reply-To: <20231018130716.286638-1-thuth@redhat.com> References: <20231018130716.286638-1-thuth@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.4 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=thuth@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_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=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: 1697634792767100001 Content-Type: text/plain; charset="utf-8" Since we already require at least kernel 3.15 in the s390x KVM code, we can assume that the KVM_CAP_SYNC_REGS capability is always there. Thus turn this into a hard requirement now. Reviewed-by: Christian Borntraeger Message-ID: <20231011080538.796999-2-thuth@redhat.com> Signed-off-by: Thomas Huth --- target/s390x/kvm/kvm.c | 20 ++++++++++++++------ 1 file changed, 14 insertions(+), 6 deletions(-) diff --git a/target/s390x/kvm/kvm.c b/target/s390x/kvm/kvm.c index 2e43dc746f..068e9826e1 100644 --- a/target/s390x/kvm/kvm.c +++ b/target/s390x/kvm/kvm.c @@ -338,21 +338,29 @@ int kvm_arch_get_default_type(MachineState *ms) =20 int kvm_arch_init(MachineState *ms, KVMState *s) { + int required_caps[] =3D { + KVM_CAP_DEVICE_CTRL, + KVM_CAP_SYNC_REGS, + }; + + for (int i =3D 0; i < ARRAY_SIZE(required_caps); i++) { + if (!kvm_check_extension(s, required_caps[i])) { + error_report("KVM is missing capability #%d - " + "please use kernel 3.15 or newer", required_caps[= i]); + return -1; + } + } + object_class_foreach(ccw_machine_class_foreach, TYPE_S390_CCW_MACHINE, false, NULL); =20 - if (!kvm_check_extension(kvm_state, KVM_CAP_DEVICE_CTRL)) { - error_report("KVM is missing capability KVM_CAP_DEVICE_CTRL - " - "please use kernel 3.15 or newer"); - return -1; - } if (!kvm_check_extension(s, KVM_CAP_S390_COW)) { error_report("KVM is missing capability KVM_CAP_S390_COW - " "unsupported environment"); return -1; } =20 - cap_sync_regs =3D kvm_check_extension(s, KVM_CAP_SYNC_REGS); + cap_sync_regs =3D true; cap_async_pf =3D kvm_check_extension(s, KVM_CAP_ASYNC_PF); cap_mem_op =3D kvm_check_extension(s, KVM_CAP_S390_MEM_OP); cap_mem_op_extension =3D kvm_check_extension(s, KVM_CAP_S390_MEM_OP_EX= TENSION); --=20 2.41.0