From: Wander Lairson Costa <wander@redhat.com>
To: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
x86@kernel.org, "H . Peter Anvin" <hpa@zytor.com>,
"Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>,
Tony Luck <tony.luck@intel.com>, Andi Kleen <ak@linux.intel.com>,
Kai Huang <kai.huang@intel.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
Subject: Re: [PATCH v5 1/3] x86/tdx: Add TDX Guest attestation interface driver
Date: Mon, 2 May 2022 09:18:46 -0300 [thread overview]
Message-ID: <Ym/MJlHrDoinrxnn@fedora> (raw)
In-Reply-To: <20220501183500.2242828-2-sathyanarayanan.kuppuswamy@linux.intel.com>
On Sun, May 01, 2022 at 11:34:58AM -0700, Kuppuswamy Sathyanarayanan wrote:
[snip]
> +
> +static struct miscdevice miscdev;
> +
> +static long tdx_get_report(void __user *argp)
> +{
> + void *reportdata = NULL, *tdreport = NULL;
> + long ret = 0;
> +
> + /* Allocate buffer space for REPORTDATA */
> + reportdata = kmalloc(TDX_REPORTDATA_LEN, GFP_KERNEL);
> + if (!reportdata)
> + return -ENOMEM;
> +
> + /* Allocate buffer space for TDREPORT */
> + tdreport = kmalloc(TDX_REPORT_LEN, GFP_KERNEL);
> + if (!tdreport) {
> + ret = -ENOMEM;
> + goto failed;
> + }
> +
> + /* Copy REPORTDATA from the user buffer */
> + if (copy_from_user(reportdata, argp, TDX_REPORTDATA_LEN)) {
> + ret = -EFAULT;
> + goto failed;
> + }
> +
> + /*
> + * Generate TDREPORT using "TDG.MR.REPORT" TDCALL.
> + *
> + * Pass the physical address of user generated REPORTDATA
> + * and the physical address of the output buffer to the TDX
> + * module to generate the TDREPORT. Generated data contains
> + * measurements/configuration data of the TD guest. More info
> + * about ABI can be found in TDX 1.0 Module specification, sec
> + * titled "TDG.MR.REPORT".
> + */
> + ret = __tdx_module_call(TDX_GET_REPORT, virt_to_phys(tdreport),
> + virt_to_phys(reportdata), 0, 0, NULL);
> + if (ret) {
> + pr_debug("TDREPORT TDCALL failed, status:%lx\n",
> + TDCALL_STATUS_CODE(ret));
Should we use pr_err instead?
[snip]
next prev parent reply other threads:[~2022-05-02 12:19 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-01 18:34 [PATCH v5 0/3] Add TDX Guest Attestation support Kuppuswamy Sathyanarayanan
2022-05-01 18:34 ` [PATCH v5 1/3] x86/tdx: Add TDX Guest attestation interface driver Kuppuswamy Sathyanarayanan
2022-05-02 2:31 ` Kai Huang
2022-05-02 15:52 ` Sathyanarayanan Kuppuswamy
2022-05-02 22:30 ` Kai Huang
2022-05-02 23:17 ` Sathyanarayanan Kuppuswamy
2022-05-02 23:37 ` Kai Huang
2022-05-03 14:38 ` Wander Costa
2022-05-03 15:09 ` Sathyanarayanan Kuppuswamy
2022-05-03 22:08 ` Kai Huang
2022-05-02 12:18 ` Wander Lairson Costa [this message]
2022-05-02 16:06 ` Sathyanarayanan Kuppuswamy
2022-05-01 18:34 ` [PATCH v5 2/3] x86/tdx: Add TDX Guest event notify interrupt support Kuppuswamy Sathyanarayanan
2022-05-02 12:44 ` Wander Lairson Costa
2022-05-01 18:35 ` [PATCH v5 3/3] x86/tdx: Add Quote generation support Kuppuswamy Sathyanarayanan
2022-05-02 2:40 ` Kai Huang
2022-05-03 1:27 ` Kirill A. Shutemov
2022-05-03 2:18 ` Kai Huang
2022-05-03 2:39 ` Sathyanarayanan Kuppuswamy
2022-05-03 22:13 ` Kai Huang
2022-05-03 2:45 ` Kirill A. Shutemov
2022-05-03 3:36 ` Kai Huang
2022-05-03 22:24 ` Dave Hansen
2022-05-03 22:28 ` Sathyanarayanan Kuppuswamy
2022-05-03 22:30 ` Sathyanarayanan Kuppuswamy
2022-05-04 22:49 ` Sathyanarayanan Kuppuswamy
2022-05-04 23:28 ` Kai Huang
2022-05-05 20:53 ` Sathyanarayanan Kuppuswamy
2022-05-05 22:15 ` Kai Huang
2022-05-05 22:38 ` Sathyanarayanan Kuppuswamy
2022-05-05 23:06 ` Dave Hansen
2022-05-06 0:11 ` Kai Huang
2022-05-06 1:55 ` Sathyanarayanan Kuppuswamy
2022-05-07 0:42 ` Kirill A. Shutemov
2022-05-09 3:37 ` Kai Huang
2022-05-09 12:09 ` Kirill A. Shutemov
2022-05-09 14:14 ` Dave Hansen
2022-05-09 15:35 ` Kirill A. Shutemov
2022-05-09 15:43 ` Sathyanarayanan Kuppuswamy
2022-05-09 23:54 ` Kai Huang
2022-05-10 0:17 ` Sathyanarayanan Kuppuswamy
2022-05-10 1:30 ` Kirill A. Shutemov
2022-05-10 1:40 ` Kai Huang
2022-05-10 10:42 ` Kai Huang
2022-05-16 17:39 ` Sathyanarayanan Kuppuswamy
2022-05-06 11:00 ` Kai Huang
2022-05-06 15:47 ` Dave Hansen
2022-05-07 1:00 ` Kirill A. Shutemov
2022-05-05 10:50 ` Kai Huang
2022-05-05 19:03 ` Sathyanarayanan Kuppuswamy
2022-05-05 22:25 ` Kai Huang
2022-05-02 5:01 ` Kai Huang
2022-05-02 16:02 ` Sathyanarayanan Kuppuswamy
2022-05-02 23:02 ` Kai Huang
2022-05-02 13:16 ` Wander Lairson Costa
2022-05-02 16:05 ` Sathyanarayanan Kuppuswamy
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