From: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
To: Sean Christopherson <sean.j.christopherson@intel.com>,
"Dr. Greg" <greg@enjellic.com>
Cc: Thomas Gleixner <tglx@linutronix.de>,
torvalds@linux-foundation.org, linux-kernel@vger.kernel.org,
x86@kernel.org, linux-sgx@vger.kernel.org,
akpm@linux-foundation.org, dave.hansen@intel.com,
nhorman@redhat.com, npmccallum@redhat.com,
haitao.huang@intel.com, andriy.shevchenko@linux.intel.com,
kai.svahn@intel.com, bp@alien8.de, josh@joshtriplett.org,
luto@kernel.org, kai.huang@intel.com, rientjes@google.com,
cedric.xing@intel.com, puiterwijk@redhat.com
Subject: Re: [PATCH v29 00/20] Intel SGX foundations
Date: Fri, 15 May 2020 03:09:42 +0300 [thread overview]
Message-ID: <fa1465e6fc3e8f40330673b28137e92755bf1fa7.camel@linux.intel.com> (raw)
In-Reply-To: <20200514161559.GA15603@linux.intel.com>
On Thu, 2020-05-14 at 09:15 -0700, Sean Christopherson wrote:
> On Thu, May 14, 2020 at 04:16:37AM -0500, Dr. Greg wrote:
> > What we would recommend at this point is that you and Jarkko do the
> > Linux community and beyond a favor and wire up a simple kernel
> > command-line parameter that controls the ability of the driver to be
> > used, ie. enables/disables access to /dev/sgx/enclave.
>
> I'm not opposed to adding a kernel param to disable SGX. At one point
> there was a proposal to extend clearcpuid to allow disabling multiple
> feature bits, but it looks like that went the way of the dodo.
>
> Note, such a param would disable SGX entirely, e.g. clear the feature bit
> in /proc/cpuinfo and prevent any in-kernel SGX code from running.
Greg, you are free to submit a patch for review that adds any possible
kernel command line parameter SGX and beyond. SGX support does not "wire
up" anything that would prevent reviewing such patches.
/Jarkko
next prev parent reply other threads:[~2020-05-15 0:10 UTC|newest]
Thread overview: 83+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-21 21:52 [PATCH v29 00/20] Intel SGX foundations Jarkko Sakkinen
2020-04-21 21:52 ` [PATCH v29 01/20] x86/sgx: Update MAINTAINERS Jarkko Sakkinen
2020-04-21 21:52 ` [PATCH v29 02/20] x86/cpufeatures: x86/msr: Add Intel SGX hardware bits Jarkko Sakkinen
2020-04-21 21:52 ` [PATCH v29 03/20] x86/cpufeatures: x86/msr: Intel SGX Launch Control " Jarkko Sakkinen
2020-04-21 21:53 ` [PATCH v29 04/20] x86/mm: x86/sgx: Signal SIGSEGV with PF_SGX Jarkko Sakkinen
2020-04-21 21:53 ` [PATCH v29 05/20] x86/sgx: Add SGX microarchitectural data structures Jarkko Sakkinen
2020-04-21 21:53 ` [PATCH v29 06/20] x86/sgx: Add wrappers for ENCLS leaf functions Jarkko Sakkinen
2020-04-21 21:53 ` [PATCH v29 07/20] x86/cpu/intel: Detect SGX support Jarkko Sakkinen
2020-04-21 21:53 ` [PATCH v29 08/20] x86/sgx: Enumerate and track EPC sections Jarkko Sakkinen
2020-04-21 21:53 ` [PATCH v29 09/20] x86/sgx: Add functions to allocate and free EPC pages Jarkko Sakkinen
2020-04-21 21:53 ` [PATCH v29 10/20] mm: Introduce vm_ops->may_mprotect() Jarkko Sakkinen
2020-04-21 21:53 ` [PATCH v29 11/20] x86/sgx: Linux Enclave Driver Jarkko Sakkinen
2020-05-08 19:09 ` Sean Christopherson
2020-04-21 21:53 ` [PATCH v29 12/20] x86/sgx: Add provisioning Jarkko Sakkinen
2020-04-21 21:53 ` [PATCH v29 13/20] x86/sgx: Add a page reclaimer Jarkko Sakkinen
2020-04-21 21:53 ` [PATCH v29 14/20] x86/sgx: ptrace() support for the SGX driver Jarkko Sakkinen
2020-05-06 21:50 ` Sean Christopherson
2020-05-13 21:40 ` Jarkko Sakkinen
2020-04-21 21:53 ` [PATCH v29 15/20] x86/vdso: Add support for exception fixup in vDSO functions Jarkko Sakkinen
2020-04-21 21:53 ` [PATCH v29 16/20] x86/fault: Add helper function to sanitize error code Jarkko Sakkinen
2020-04-21 21:53 ` [PATCH v29 17/20] x86/traps: Attempt to fixup exceptions in vDSO before signaling Jarkko Sakkinen
2020-04-21 21:53 ` [PATCH v29 18/20] x86/vdso: Implement a vDSO for Intel SGX enclave call Jarkko Sakkinen
2020-04-21 21:53 ` [PATCH v29 19/20] selftests/x86: Add a selftest for SGX Jarkko Sakkinen
2020-04-21 21:53 ` [PATCH v29 20/20] docs: x86/sgx: Document SGX micro architecture and kernel internals Jarkko Sakkinen
2020-04-22 16:48 ` [PATCH v29 00/20] Intel SGX foundations Connor Kuehl
2020-04-29 5:22 ` Jarkko Sakkinen
2020-04-26 16:57 ` Dr. Greg
2020-04-29 5:23 ` Jarkko Sakkinen
2020-04-29 15:14 ` Sean Christopherson
2020-04-30 3:59 ` Jarkko Sakkinen
2020-05-02 23:05 ` Dr. Greg
2020-05-03 0:48 ` Andy Lutomirski
2020-05-04 9:34 ` Dr. Greg
2020-04-29 15:30 ` Sean Christopherson
2020-05-08 0:40 ` Andy Lutomirski
2020-05-07 0:41 ` Thomas Gleixner
2020-05-08 19:02 ` Dr. Greg
2020-05-08 19:56 ` Sean Christopherson
2020-05-14 9:16 ` Dr. Greg
2020-05-14 16:15 ` Sean Christopherson
2020-05-14 16:20 ` Borislav Petkov
2020-05-14 19:29 ` Thomas Gleixner
2020-05-15 9:28 ` Jarkko Sakkinen
2020-05-15 9:42 ` Borislav Petkov
2020-05-15 16:24 ` Jarkko Sakkinen
2020-05-15 0:09 ` Jarkko Sakkinen [this message]
2020-05-15 19:54 ` Nathaniel McCallum
2020-05-16 9:58 ` Jarkko Sakkinen
2020-05-24 21:27 ` Pavel Machek
2020-05-26 8:16 ` David Laight
2020-04-26 17:03 ` Dr. Greg
2020-04-29 15:27 ` Jethro Beekman
2020-04-30 3:46 ` Jarkko Sakkinen
2020-04-30 7:19 ` Jethro Beekman
2020-04-30 8:23 ` Jarkko Sakkinen
2020-04-30 14:12 ` Jethro Beekman
2020-05-06 12:16 ` Jarkko Sakkinen
2020-05-06 16:39 ` Jordan Hand
2020-05-07 18:06 ` Dr. Greg
2020-05-08 16:16 ` Jordan Hand
2020-05-13 23:09 ` Jarkko Sakkinen
2020-05-06 21:42 ` Nathaniel McCallum
2020-05-06 22:14 ` Sean Christopherson
2020-05-07 5:02 ` Haitao Huang
2020-05-07 16:49 ` Nathaniel McCallum
2020-05-07 19:34 ` Sean Christopherson
2020-05-07 22:35 ` Haitao Huang
2020-05-08 0:25 ` Sean Christopherson
2020-05-28 11:15 ` Jarkko Sakkinen
2020-05-28 11:19 ` Jarkko Sakkinen
2020-05-07 22:31 ` Haitao Huang
2020-05-13 22:14 ` Jarkko Sakkinen
2020-05-13 22:18 ` Jarkko Sakkinen
2020-05-14 6:31 ` Jethro Beekman
2020-05-14 19:30 ` Thomas Gleixner
2020-05-15 0:22 ` Jarkko Sakkinen
2020-05-08 19:08 ` Sean Christopherson
2020-05-14 19:05 ` Seth Moore
2020-05-15 0:23 ` Jarkko Sakkinen
2020-05-12 11:55 ` Hui, Chunyang
2020-05-12 16:51 ` Dr. Greg
2020-05-14 10:49 ` Jarkko Sakkinen
2020-05-16 8:53 ` [PATCH] x86/cpu/intel: Add nosgx kernel parameter Jarkko Sakkinen
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