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envelope-from=xen-devel-bounces@lists.xenproject.org; helo=lists.xenproject.org; received-spf: None (protection.outlook.com: suse.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: 5U7oVRNt5OqnMDErERzg+r9W7xoHE8TGoZ/0QO+yy4vPSmmBvZMciiBq/Sr1d/YE4Y75mS6eiOxeBzgnYfXw9Z9c3YI9OLNOI4xLPJSFjQg89J3Ss+hpEiP6HuNdz5Jdu3a8aZS2f2SluFnCAnGpf9+Jw2E3lN4afh0CXSRIUVYuBtrYvWxXi0zReofKKaFELJ0dNARJN7Ilyl8DV9bO1HOctpuuNoUXYGb/B+6yhHB3e/vjIZBOK8X4NQnf5h4EpIBpRu8WikkK0gXU1iAd5LVzsKKUL0PFkskvve7F+79ENXXJ9ZsIPsbKeBiimAgEwYcxoPVUD0FnY7QqnsXZWV/qbY5887iTzm8pxZjgOJ/oPlHto7zOuIMyFrLfUMN0EJfUNkAUHomleYPb7qOhEgXKbAUw1348ENskKTzoOow= MIME-Version: 1.0 X-MS-Exchange-CrossTenant-Network-Message-Id: c0db9fc4-e764-4f77-1e36-08d715bbb54b X-MS-Exchange-CrossTenant-originalarrivaltime: 31 Jul 2019 13:33:44.3279 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 856b813c-16e5-49a5-85ec-6f081e13b527 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: jnwang@suse.com X-MS-Exchange-Transport-CrossTenantHeadersStamped: BY5PR18MB3266 X-OriginatorOrg: suse.com Subject: [Xen-devel] [PATCH v5] Speculative mitigation facilities report wrong status X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: "andrew.cooper3@citrix.com" , Jin Nan Wang , "wl@xen.org" , Jan Beulich , "roger.pau@citrix.com" Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" Booting with spec-ctrl=3D0 results in Xen printing "None MD_CLEAR". (XEN) Support for HVM VMs: None MD_CLEAR (XEN) Support for PV VMs: None MD_CLEAR Add a check about X86_FEATURE_MD_CLEAR to avoid to print "None". Signed-off-by: James Wang Reviewed-by: Andrew Cooper --- xen/arch/x86/spec_ctrl.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/xen/arch/x86/spec_ctrl.c b/xen/arch/x86/spec_ctrl.c index cada9a058e..468a847598 100644 --- a/xen/arch/x86/spec_ctrl.c +++ b/xen/arch/x86/spec_ctrl.c @@ -366,6 +366,7 @@ static void __init print_details(enum ind_thunk thunk, = uint64_t caps) printk(" Support for HVM VMs:%s%s%s%s%s\n", (boot_cpu_has(X86_FEATURE_SC_MSR_HVM) || boot_cpu_has(X86_FEATURE_SC_RSB_HVM) || + boot_cpu_has(X86_FEATURE_MD_CLEAR) || opt_eager_fpu) ? "" : = " None", boot_cpu_has(X86_FEATURE_SC_MSR_HVM) ? " MSR_SPEC_CTRL" : = "", boot_cpu_has(X86_FEATURE_SC_RSB_HVM) ? " RSB" : = "", @@ -377,6 +378,7 @@ static void __init print_details(enum ind_thunk thunk, = uint64_t caps) printk(" Support for PV VMs:%s%s%s%s%s\n", (boot_cpu_has(X86_FEATURE_SC_MSR_PV) || boot_cpu_has(X86_FEATURE_SC_RSB_PV) || + boot_cpu_has(X86_FEATURE_MD_CLEAR) || opt_eager_fpu) ? "" : = " None", boot_cpu_has(X86_FEATURE_SC_MSR_PV) ? " MSR_SPEC_CTRL" : = "", boot_cpu_has(X86_FEATURE_SC_RSB_PV) ? " RSB" : = "", --=20 2.22.0 _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel