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([10.124.223.186]) by fmviesa009-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Oct 2024 12:00:55 -0700 From: Rick Edgecombe To: pbonzini@redhat.com, seanjc@google.com Cc: rick.p.edgecombe@intel.com, yan.y.zhao@intel.com, isaku.yamahata@gmail.com, kai.huang@intel.com, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, tony.lindgren@linux.intel.com, xiaoyao.li@intel.com, reinette.chatre@intel.com Subject: [PATCH v2 02/25] KVM: TDX: Get TDX global information Date: Wed, 30 Oct 2024 12:00:15 -0700 Message-ID: <20241030190039.77971-3-rick.p.edgecombe@intel.com> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20241030190039.77971-1-rick.p.edgecombe@intel.com> References: <20241030190039.77971-1-rick.p.edgecombe@intel.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Kai Huang KVM will need to consult some essential TDX global information to create and run TDX guests. Get the global information after initializing TDX. Signed-off-by: Kai Huang Signed-off-by: Rick Edgecombe --- uAPI breakout v2: - New patch --- arch/x86/kvm/vmx/tdx.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/arch/x86/kvm/vmx/tdx.c b/arch/x86/kvm/vmx/tdx.c index 8651599822d5..f95a4dbcaf4a 100644 --- a/arch/x86/kvm/vmx/tdx.c +++ b/arch/x86/kvm/vmx/tdx.c @@ -12,6 +12,8 @@ module_param_named(tdx, enable_tdx, bool, 0444); =20 static enum cpuhp_state tdx_cpuhp_state; =20 +static const struct tdx_sys_info *tdx_sysinfo; + static int tdx_online_cpu(unsigned int cpu) { unsigned long flags; @@ -91,11 +93,20 @@ static int __init __tdx_bringup(void) if (r) goto tdx_bringup_err; =20 + /* Get TDX global information for later use */ + tdx_sysinfo =3D tdx_get_sysinfo(); + if (WARN_ON_ONCE(!tdx_sysinfo)) { + r =3D -EINVAL; + goto get_sysinfo_err; + } + /* * Leave hardware virtualization enabled after TDX is enabled * successfully. TDX CPU hotplug depends on this. */ return 0; +get_sysinfo_err: + __do_tdx_cleanup(); tdx_bringup_err: kvm_disable_virtualization(); return r; --=20 2.47.0