From: Sathyanarayanan Kuppuswamy <sathyanarayanan.kuppuswamy@linux.intel.com>
To: Borislav Petkov <bp@alien8.de>
Cc: Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>,
Dave Hansen <dave.hansen@linux.intel.com>,
x86@kernel.org, Shuah Khan <shuah@kernel.org>,
Jonathan Corbet <corbet@lwn.net>,
"H . Peter Anvin" <hpa@zytor.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
"Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>,
Tony Luck <tony.luck@intel.com>, Kai Huang <kai.huang@intel.com>,
Wander Lairson Costa <wander@redhat.com>,
Isaku Yamahata <isaku.yamahata@gmail.com>,
marcelo.cerri@canonical.com, tim.gardner@canonical.com,
khalid.elmously@canonical.com, philip.cox@canonical.com,
linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org,
linux-doc@vger.kernel.org
Subject: Re: [PATCH v14 1/3] x86/tdx: Make __tdx_module_call() usable in driver module
Date: Wed, 12 Oct 2022 08:44:04 -0700 [thread overview]
Message-ID: <6759025f-fc08-74f0-efd7-2331110dec0c@linux.intel.com> (raw)
In-Reply-To: <Y0bOtzlrkKzHmQVZ@zn.tnic>
On 10/12/22 7:27 AM, Borislav Petkov wrote:
> On Wed, Oct 12, 2022 at 06:35:56AM -0700, Sathyanarayanan Kuppuswamy wrote:
>> So we should create a new wrapper for this use case or use
>
> Yes, you got it - a new wrapper pls.
Ok. I will add a new wrapper to get the TDREPORT.
+/*
+ * Add a wrapper for TDG.MR.REPORT TDCALL. It is used in TDX guest
+ * driver module to get the TDREPORT.
+ */
+long tdx_mcall_get_report(void *reportdata, void *tdreport, u8 subtype)
+{
+ if (subtype || !reportdata || !tdreport)
+ return -EINVAL;
+
+ /*
+ * Generate TDREPORT using "TDG.MR.REPORT" TDCALL.
+ *
+ * Get the TDREPORT using REPORTDATA as input. Refer to
+ * section 22.3.3 TDG.MR.REPORT leaf in the TDX Module 1.0
+ * specification for detailed information.
+ */
+ return __tdx_module_call(TDX_GET_REPORT, virt_to_phys(tdreport),
+ virt_to_phys(reportdata), subtype, 0, NULL);
+}
+EXPORT_SYMBOL_GPL(tdx_mcall_get_report);
>
> Thx.
>
--
Sathyanarayanan Kuppuswamy
Linux Kernel Developer
next prev parent reply other threads:[~2022-10-12 15:44 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-28 21:55 [PATCH v14 0/3] Add TDX Guest Attestation support Kuppuswamy Sathyanarayanan
2022-09-28 21:55 ` [PATCH v14 1/3] x86/tdx: Make __tdx_module_call() usable in driver module Kuppuswamy Sathyanarayanan
2022-10-12 10:18 ` Borislav Petkov
2022-10-12 13:35 ` Sathyanarayanan Kuppuswamy
2022-10-12 14:27 ` Borislav Petkov
2022-10-12 15:44 ` Sathyanarayanan Kuppuswamy [this message]
2022-10-12 16:23 ` Greg Kroah-Hartman
2022-10-12 17:13 ` Sathyanarayanan Kuppuswamy
2022-10-12 17:26 ` Greg Kroah-Hartman
2022-10-12 18:11 ` Sathyanarayanan Kuppuswamy
2022-09-28 21:55 ` [PATCH v14 2/3] virt: Add TDX guest driver Kuppuswamy Sathyanarayanan
2022-09-29 18:02 ` Wander Lairson Costa
2022-09-29 18:11 ` Sathyanarayanan Kuppuswamy
2022-09-30 12:22 ` Greg Kroah-Hartman
2022-09-30 15:27 ` Sathyanarayanan Kuppuswamy
2022-10-12 15:47 ` Borislav Petkov
2022-10-12 23:01 ` Sathyanarayanan Kuppuswamy
2022-10-13 13:21 ` Borislav Petkov
2022-09-28 21:55 ` [PATCH v14 3/3] selftests: tdx: Test TDX attestation GetReport support Kuppuswamy Sathyanarayanan
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