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
