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Mon, 25 Nov 2024 11:59:28 -0800 (PST) From: Jean-Philippe Brucker To: peter.maydell@linaro.org Cc: richard.henderson@linaro.org, philmd@linaro.org, qemu-arm@nongnu.org, qemu-devel@nongnu.org, alex.bennee@linaro.org, Jean-Philippe Brucker Subject: [PATCH v3 07/26] target/arm/kvm: Create scratch VM as Realm if necessary Date: Mon, 25 Nov 2024 19:56:06 +0000 Message-ID: <20241125195626.856992-9-jean-philippe@linaro.org> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20241125195626.856992-2-jean-philippe@linaro.org> References: <20241125195626.856992-2-jean-philippe@linaro.org> 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=2a00:1450:4864:20::430; envelope-from=jean-philippe@linaro.org; helo=mail-wr1-x430.google.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, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, 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 @linaro.org) X-ZM-MESSAGEID: 1732564868470019100 Content-Type: text/plain; charset="utf-8" Some ID registers have a different value for a Realm VM, for example ID_AA64DFR0_EL1 contains the number of breakpoints/watchpoints implemented by RMM instead of the hardware. Even though RMM is in charge of setting up most Realm registers, KVM still provides GET_ONE_REG interface on a Realm VM to probe the VM's capabilities. Signed-off-by: Jean-Philippe Brucker --- target/arm/kvm.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/target/arm/kvm.c b/target/arm/kvm.c index a0de2efc41..870f51bf02 100644 --- a/target/arm/kvm.c +++ b/target/arm/kvm.c @@ -106,6 +106,7 @@ bool kvm_arm_create_scratch_host_vcpu(const uint32_t *c= pus_to_try, { int ret =3D 0, kvmfd =3D -1, vmfd =3D -1, cpufd =3D -1; int max_vm_pa_size; + int vm_type; =20 kvmfd =3D qemu_open_old("/dev/kvm", O_RDWR); if (kvmfd < 0) { @@ -115,8 +116,9 @@ bool kvm_arm_create_scratch_host_vcpu(const uint32_t *c= pus_to_try, if (max_vm_pa_size < 0) { max_vm_pa_size =3D 0; } + vm_type =3D kvm_arm_rme_vm_type(MACHINE(qdev_get_machine())); do { - vmfd =3D ioctl(kvmfd, KVM_CREATE_VM, max_vm_pa_size); + vmfd =3D ioctl(kvmfd, KVM_CREATE_VM, max_vm_pa_size | vm_type); } while (vmfd =3D=3D -1 && errno =3D=3D EINTR); if (vmfd < 0) { goto err; --=20 2.47.0