From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Wander Lairson Costa <wander@redhat.com>
Cc: Sathyanarayanan Kuppuswamy
<sathyanarayanan.kuppuswamy@linux.intel.com>,
Borislav Petkov <bp@alien8.de>,
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>,
"Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>,
Tony Luck <tony.luck@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, linux-kselftest@vger.kernel.org,
linux-doc@vger.kernel.org
Subject: Re: [PATCH v15 2/3] virt: Add TDX guest driver
Date: Mon, 24 Oct 2022 15:54:07 +0200 [thread overview]
Message-ID: <Y1aY/4SWwuDENigJ@kroah.com> (raw)
In-Reply-To: <CAAq0SU=w-upGGstmQgTh63zGqLZnEy1OpF+9FwAjSWMuyYyXTg@mail.gmail.com>
On Mon, Oct 24, 2022 at 09:57:53AM -0300, Wander Lairson Costa wrote:
> On Sun, Oct 23, 2022 at 1:13 PM Sathyanarayanan Kuppuswamy
> <sathyanarayanan.kuppuswamy@linux.intel.com> wrote:
> >
> >
> >
> > On 10/20/22 9:39 PM, Greg Kroah-Hartman wrote:
> > >>> You are allowing userspace to spam the kernel logs, please do not do
> > >>> that.
> > >> Added it to help userspace understand the reason for the failure (only for
> > >> the cases like request param issues and TDCALL failure). Boris recommended
> > >> adding it in the previous review.
> > > Again, you just created a vector for userspace to spam the kernel log.
> > > No kernel driver should ever do that.
> > >
> >
> > Brois, any comments? Do you also agree?
> >
>
> Maybe dev_err_once() does the job?
That does not make any sense when the userspace input can be different
each time.
This is just yet-another-ioctl, there's nothing special about it.
Return an error for invalid input and don't log anything. Worst case,
make it a dev_dbg() call if you really really really want to see it.
thanks,
greg k-h
next prev parent reply other threads:[~2022-10-24 23:07 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-20 4:58 [PATCH v15 0/3]] Add TDX Guest Attestation support Kuppuswamy Sathyanarayanan
2022-10-20 4:58 ` [PATCH v15 1/3] x86/tdx: Add a wrapper to get TDREPORT from the TDX Module Kuppuswamy Sathyanarayanan
2022-10-20 4:58 ` [PATCH v15 2/3] virt: Add TDX guest driver Kuppuswamy Sathyanarayanan
2022-10-20 5:38 ` Greg Kroah-Hartman
2022-10-21 0:00 ` Sathyanarayanan Kuppuswamy
2022-10-21 4:39 ` Greg Kroah-Hartman
2022-10-21 23:51 ` Sathyanarayanan Kuppuswamy
2022-10-22 6:05 ` Greg Kroah-Hartman
2022-10-22 6:42 ` Sathyanarayanan Kuppuswamy
2022-10-23 16:13 ` Sathyanarayanan Kuppuswamy
2022-10-24 12:57 ` Wander Lairson Costa
2022-10-24 13:54 ` Greg Kroah-Hartman [this message]
2022-10-24 23:59 ` Sathyanarayanan Kuppuswamy
2022-10-24 14:17 ` Dave Hansen
2022-10-25 0:20 ` Sathyanarayanan Kuppuswamy
2022-10-20 4:58 ` [PATCH v15 3/3] selftests: tdx: Test TDX attestation GetReport support Kuppuswamy Sathyanarayanan
2022-10-20 17:08 ` [PATCH v15 0/3]] Add TDX Guest Attestation support Dave Hansen
2022-10-23 16:09 ` Sathyanarayanan Kuppuswamy
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