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From: Sean Christopherson <sean.j.christopherson@intel.com>
To: Andy Lutomirski <luto@kernel.org>
Cc: "Xing, Cedric" <cedric.xing@intel.com>,
	Stephen Smalley <sds@tycho.nsa.gov>,
	Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>,
	James Morris <jmorris@namei.org>,
	"Serge E. Hallyn" <serge@hallyn.com>,
	LSM List <linux-security-module@vger.kernel.org>,
	Paul Moore <paul@paul-moore.com>,
	Eric Paris <eparis@parisplace.org>,
	"selinux@vger.kernel.org" <selinux@vger.kernel.org>,
	Jethro Beekman <jethro@fortanix.com>,
	"Hansen, Dave" <dave.hansen@intel.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	"Dr. Greg" <greg@enjellic.com>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	LKML <linux-kernel@vger.kernel.org>, X86 ML <x86@kernel.org>,
	"linux-sgx@vger.kernel.org" <linux-sgx@vger.kernel.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	"nhorman@redhat.com" <nhorman@redhat.com>,
	"npmccallum@redhat.com" <npmccallum@redhat.com>,
	"Ayoun, Serge" <serge.ayoun@intel.com>,
	"Katz-zamir, Shay" <shay.katz-zamir@intel.com>,
	"Huang, Haitao" <haitao.huang@intel.com>,
	Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
	"Svahn, Kai" <kai.svahn@intel.com>,
	Borislav Petkov <bp@alien8.de>,
	Josh Triplett <josh@joshtriplett.org>,
	"Huang, Kai" <kai.huang@intel.com>,
	David Rientjes <rientjes@google.com>
Subject: Re: SGX vs LSM (Re: [PATCH v20 00/28] Intel SGX1 support)
Date: Fri, 24 May 2019 15:41:07 -0700
Message-ID: <20190524224107.GJ365@linux.intel.com> (raw)
In-Reply-To: <CALCETrUyAAhnQ+RUeN1L41TKj-vcD2CNt-FJ9siO=Zo6gvH1Aw@mail.gmail.com>

On Fri, May 24, 2019 at 02:27:34PM -0700, Andy Lutomirski wrote:
> On Fri, May 24, 2019 at 1:03 PM Sean Christopherson
> <sean.j.christopherson@intel.com> wrote:
> >
> > On Fri, May 24, 2019 at 12:37:44PM -0700, Andy Lutomirski wrote:
> > > On Fri, May 24, 2019 at 11:34 AM Xing, Cedric <cedric.xing@intel.com> wrote:
> > > >
> > > > If "initial permissions" for enclaves are less restrictive than shared
> > > > objects, then it'd become a backdoor for circumventing LSM when enclave
> > > > whitelisting is *not* in place. For example, an adversary may load a page,
> > > > which would otherwise never be executable, as an executable page in EPC.
> > > >
> > > > In the case a RWX page is needed, the calling process has to have a RWX
> > > > page serving as the source for EADD so PROCESS__EXECMEM will have been
> > > > checked. For SGX2, changing an EPC page to RWX is subject to FILE__EXECMEM
> > > > on /dev/sgx/enclave, which I see as a security benefit because it only
> > > > affects the enclave but not the whole process hosting it.
> > >
> > > So the permission would be like FILE__EXECMOD on the source enclave
> > > page, because it would be mapped MAP_ANONYMOUS, PROT_WRITE?
> > > MAP_SHARED, PROT_WRITE isn't going to work because that means you can
> > > modify the file.
> >
> > Was this in response to Cedric's comment, or to my comment?
> 
> Yours.  I think that requiring source pages to be actually mapped W is
> not such a great idea.

I wasn't requiring source pages to be mapped W.  At least I didn't intend
to require W.  What I was trying to say is that SGX could trigger an
EXECMEM check if userspace attempted to EADD or EAUG an enclave page with
RWX permissions, e.g.:

  if ((SECINFO.PERMS & RWX) == RWX) {
      ret = security_mmap_file(NULL, RWX, ???);
      if (ret)
          return ret;
  }

But that's a moot point if we add security_enclave_load() or whatever.

> 
> >
> > > I'm starting to think that looking at the source VMA permission bits
> > > or source PTE permission bits is putting a bit too much policy into
> > > the driver as opposed to the LSM.  How about delegating the whole
> > > thing to an LSM hook?  The EADD operation would invoke a new hook,
> > > something like:
> > >
> > > int security_enclave_load_bytes(void *source_addr, struct
> > > vm_area_struct *source_vma, loff_t source_offset, unsigned int
> > > maxperm);
> > >
> > > Then you don't have to muck with mapping anything PROT_EXEC.  Instead
> > > you load from a mapping of a file and the LSM applies whatever policy
> > > it feels appropriate.  If the first pass gets something wrong, the
> > > application or library authors can take it up with the SELinux folks
> > > without breaking the whole ABI :)
> > >
> > > (I'm proposing passing in the source_vma because this hook would be
> > > called with mmap_sem held for read to avoid a TOCTOU race.)
> > >
> > > If we go this route, the only substantial change to the existing
> > > driver that's needed for an initial upstream merge is the maxperm
> > > mechanism and whatever hopefully minimal API changes are needed to
> > > allow users to conveniently set up the mappings.  And we don't need to
> > > worry about how to hack around mprotect() calling into the LSM,
> > > because the LSM will actually be aware of SGX and can just do the
> > > right thing.
> >
> > This doesn't address restricting which processes can run which enclaves,
> > it only allows restricting the build flow.  Or are you suggesting this
> > be done in addition to whitelisting sigstructs?
> 
> In addition.
> 
> But I named the function badly and gave it a bad signature, which
> confused you.  Let's try again:
> 
> int security_enclave_load_from_memory(const struct vm_area_struct
> *source, unsigned int maxperm);

I prefer security_enclave_load(), "from_memory" seems redundant at best.

> Maybe some really fancy future LSM would also want loff_t
> source_offset, but it's probably not terribly useful.  This same
> callback would be used for EAUG.
> 
> Following up on your discussion with Cedric about sigstruct, the other
> callback would be something like:
> 
> int security_enclave_init(struct file *sigstruct_file);
> 
> The main issue I see is that we also want to control the enclave's
> ability to have RWX pages or to change a W page to X.  We might also
> want:
> 
> int security_enclave_load_zeros(unsigned int maxperm);

What's the use case for this?  @maxperm will always be at least RW in
this case, otherwise the page is useless to the enclave, and if the
enclave can write the page, the fact that it started as zeros is
irrelevant.

> An enclave that's going to modify its own code will need memory with
> maxperm = RWX or WX.
> 
> But this is a bit awkward if the LSM's decision depends on the
> sigstruct.  We could get fancy and require that the sigstruct be
> supplied before any EADD operations so that the maxperm decisions can
> depend on the sigstruct.
> 
> Am I making more sense now?

Yep.  Requiring .sigstruct at ECREATE would be trivial.  If we wanted
flexibility we could do:

   int security_enclave_load(struct file *file, struct vm_area_struct *vma,
                             unsigned long prot);

And for ultimate flexibility we could pass both .sigstruct and the file
pointer for /dev/sgx/enclave, but that seems a bit ridiculous.

Passing both would allow tying EXECMOD to /dev/sgx/enclave as Cedric
wanted (without having to play games and pass /dev/sgx/enclave to
security_enclave_load()), but I don't think there's anything fundamentally
broken with using .sigstruct for EXECMOD.  It requires more verbose
labeling, but that's not a bad thing.

  reply index

Thread overview: 318+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-04-17 10:39 [PATCH v20 00/28] Intel SGX1 support Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 01/28] x86/cpufeatures: Add Intel-defined SGX feature bit Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 02/28] x86/cpufeatures: Add SGX sub-features (as Linux-defined bits) Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 03/28] x86/msr: Add IA32_FEATURE_CONTROL.SGX_ENABLE definition Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 04/28] x86/cpufeatures: Add Intel-defined SGX_LC feature bit Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 05/28] x86/msr: Add SGX Launch Control MSR definitions Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 06/28] x86/mm: x86/sgx: Add new 'PF_SGX' page fault error code bit Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 07/28] x86/mm: x86/sgx: Signal SIGSEGV for userspace #PFs w/ PF_SGX Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 08/28] x86/cpu/intel: Detect SGX support and update caps appropriately Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 09/28] x86/sgx: Add ENCLS architectural error codes Jarkko Sakkinen
2019-04-22 21:35   ` Sean Christopherson
2019-04-17 10:39 ` [PATCH v20 10/28] x86/sgx: Add SGX1 and SGX2 architectural data structures Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 11/28] x86/sgx: Add wrappers for ENCLS leaf functions Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 12/28] x86/sgx: Enumerate and track EPC sections Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 13/28] x86/sgx: Add functions to allocate and free EPC pages Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 14/28] x86/sgx: Add sgx_einit() for initializing enclaves Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 15/28] x86/sgx: Add the Linux SGX Enclave Driver Jarkko Sakkinen
2019-04-22 21:58   ` Sean Christopherson
2019-04-23 23:29     ` Jethro Beekman
2019-04-24  0:26       ` Sean Christopherson
2019-04-24  1:04         ` Jethro Beekman
2019-04-29 19:08           ` Sean Christopherson
2019-06-04 20:12         ` Sean Christopherson
2019-06-05 14:29           ` Jarkko Sakkinen
2019-06-05 14:52             ` Sean Christopherson
2019-06-05 21:25               ` Dr. Greg
2019-06-05 22:20                 ` Sean Christopherson
2019-06-06 15:32               ` Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 16/28] x86/sgx: Add provisioning Jarkko Sakkinen
2019-04-19  3:06   ` Huang, Kai
2019-04-23 14:33     ` Jarkko Sakkinen
2019-04-24  1:34   ` Jethro Beekman
2019-05-02  8:27     ` Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 17/28] x86/sgx: Add swapping code to the core and SGX driver Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 18/28] x86/sgx: ptrace() support for the " Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 19/28] x86/vdso: Add support for exception fixup in vDSO functions Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 20/28] x86/fault: Add helper function to sanitize error code Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 21/28] x86/fault: Attempt to fixup unhandled #PF in vDSO before signaling Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 22/28] x86/traps: Attempt to fixup exceptions " Jarkko Sakkinen
2019-06-25 15:43   ` Jarkko Sakkinen
2019-06-27 20:32     ` Xing, Cedric
2019-07-11 15:54       ` Sean Christopherson
2019-07-11 22:12         ` Xing, Cedric
2019-07-11 15:56     ` Sean Christopherson
2019-07-11 17:52       ` Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 23/28] x86/vdso: Add __vdso_sgx_enter_enclave() to wrap SGX enclave transitions Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 24/28] selftests/x86: Add a selftest for SGX Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 25/28] x86/sgx: Update MAINTAINERS Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 26/28] docs: x86/sgx: Add Architecture documentation Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 27/28] docs: x86/sgx: Document kernel internals Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 28/28] docs: x86/sgx: Document the enclave API Jarkko Sakkinen
2019-04-18 17:10 ` [PATCH v20 00/28] Intel SGX1 support Dr. Greg
2019-04-18 17:24   ` Dave Hansen
2019-04-19 16:24     ` Dr. Greg
2019-04-19 16:39       ` Dave Hansen
2019-04-18 18:01   ` Dave Hansen
2019-04-19 14:17     ` Dr. Greg
2019-04-19 14:25       ` Dave Hansen
2019-04-19 15:27       ` Andy Lutomirski
2019-04-19 19:38         ` Jethro Beekman
2019-04-19 20:39           ` Thomas Gleixner
2019-04-19 20:46             ` Jethro Beekman
2019-04-19 20:50               ` Thomas Gleixner
2019-04-19 20:54                 ` Jethro Beekman
2019-04-19 21:15                   ` Andy Lutomirski
2019-04-19 21:19                     ` Jethro Beekman
2019-04-19 21:31                       ` Andy Lutomirski
2019-04-19 21:35                         ` Jethro Beekman
2019-04-19 21:38                           ` Thomas Gleixner
2019-04-19 21:56                             ` Jethro Beekman
2019-04-20  5:42                               ` Thomas Gleixner
2019-04-20 16:02                                 ` Dr. Greg
2019-04-22 15:01                                   ` Sean Christopherson
2019-04-22 16:24                                     ` Dr. Greg
2019-04-22 16:48                                       ` Sean Christopherson
2019-04-22 16:55                                         ` Linus Torvalds
2019-04-22 17:17                                           ` Sean Christopherson
2019-04-23  9:11                                             ` Dr. Greg
2019-04-22 16:26                               ` Andy Lutomirski
2019-04-23 21:15                                 ` Jethro Beekman
2019-05-10 17:23                                 ` Xing, Cedric
2019-05-10 17:37                                   ` Jethro Beekman
2019-05-10 17:54                                     ` Dave Hansen
2019-05-10 18:04                                       ` Jethro Beekman
2019-05-10 18:56                                         ` Xing, Cedric
2019-05-10 19:04                                           ` Jethro Beekman
2019-05-10 19:22                                             ` Andy Lutomirski
2019-05-11  1:06                                               ` Xing, Cedric
2019-05-14 15:08                                                 ` Andy Lutomirski
2019-05-15  8:31                                                   ` Jarkko Sakkinen
     [not found]                                               ` <20190513102926.GD8743@linux.intel.com>
2019-05-14 10:43                                                 ` Jarkko Sakkinen
2019-05-14 15:13                                                   ` Andy Lutomirski
2019-05-14 20:45                                                     ` Sean Christopherson
2019-05-14 21:27                                                       ` Andy Lutomirski
2019-05-14 22:28                                                         ` Xing, Cedric
2019-05-15  1:30                                                         ` Sean Christopherson
2019-05-15 18:27                                                           ` SGX vs LSM (Re: [PATCH v20 00/28] Intel SGX1 support) Andy Lutomirski
2019-05-15 19:58                                                             ` James Morris
2019-05-15 20:35                                                               ` Andy Lutomirski
2019-05-15 22:46                                                                 ` James Morris
2019-05-15 23:13                                                                   ` Andy Lutomirski
2019-05-16  3:03                                                                     ` Xing, Cedric
2019-05-16  4:40                                                                       ` Andy Lutomirski
2019-05-16 22:23                                                                         ` Xing, Cedric
2019-05-17  0:35                                                                           ` Andy Lutomirski
2019-05-17  1:06                                                                             ` Xing, Cedric
2019-05-17  1:21                                                                               ` Andy Lutomirski
2019-05-17 16:05                                                                             ` Sean Christopherson
2019-05-17 13:53                                                                           ` Stephen Smalley
2019-05-17 15:09                                                                             ` Sean Christopherson
2019-05-17 16:20                                                                               ` Stephen Smalley
2019-05-17 16:24                                                                                 ` Andy Lutomirski
2019-05-17 16:37                                                                                 ` Stephen Smalley
2019-05-17 17:12                                                                                   ` Andy Lutomirski
2019-05-17 18:05                                                                                     ` Stephen Smalley
2019-05-17 19:20                                                                                       ` Stephen Smalley
2019-05-17 19:28                                                                                       ` Sean Christopherson
2019-05-17 20:09                                                                                         ` Stephen Smalley
2019-05-17 20:14                                                                                           ` Andy Lutomirski
2019-05-17 20:34                                                                                             ` Stephen Smalley
2019-05-17 21:36                                                                                           ` Sean Christopherson
2019-05-17 17:29                                                                                   ` Sean Christopherson
2019-05-17 17:42                                                                                     ` Stephen Smalley
2019-05-17 17:50                                                                                       ` Sean Christopherson
2019-05-17 18:16                                                                                         ` Stephen Smalley
2019-05-17 17:43                                                                                     ` Andy Lutomirski
2019-05-17 17:55                                                                                       ` Sean Christopherson
2019-05-17 18:04                                                                                         ` Linus Torvalds
2019-05-17 18:21                                                                                           ` Sean Christopherson
2019-05-17 18:33                                                                                             ` Linus Torvalds
2019-05-17 18:52                                                                                               ` Sean Christopherson
2019-05-17 18:53                                                                                             ` Andy Lutomirski
2019-05-16  7:24                                                                     ` James Morris
2019-05-16 21:00                                                                       ` Andy Lutomirski
2019-05-20  9:38                                                                       ` Dr. Greg
2019-05-15 21:38                                                             ` Sean Christopherson
2019-05-16  1:19                                                               ` Haitao Huang
2019-05-16  5:16                                                             ` Jarkko Sakkinen
2019-05-16 21:02                                                               ` Andy Lutomirski
2019-05-16 22:45                                                                 ` Sean Christopherson
2019-05-16 23:29                                                                   ` Xing, Cedric
2019-05-20 11:29                                                                   ` Jarkko Sakkinen
2019-05-20 11:33                                                                 ` Jarkko Sakkinen
2019-05-17  0:03                                                             ` Sean Christopherson
2019-05-17  0:26                                                               ` Andy Lutomirski
2019-05-17 15:41                                                                 ` Sean Christopherson
2019-05-20 11:42                                                                   ` Jarkko Sakkinen
2019-05-20 11:41                                                                 ` Jarkko Sakkinen
2019-05-21 15:19                                                                   ` Jarkko Sakkinen
2019-05-21 15:24                                                                     ` Jethro Beekman
2019-05-22 13:10                                                                       ` Jarkko Sakkinen
2019-05-21 15:51                                                                     ` Sean Christopherson
2019-05-22 13:20                                                                       ` Jarkko Sakkinen
2019-05-22 13:22                                                                         ` Jarkko Sakkinen
2019-05-22 13:56                                                                           ` Stephen Smalley
2019-05-22 15:38                                                                             ` Sean Christopherson
2019-05-22 22:42                                                                               ` Andy Lutomirski
2019-05-23  2:35                                                                                 ` Sean Christopherson
2019-05-23 10:26                                                                                   ` Jarkko Sakkinen
2019-05-23 14:17                                                                                     ` Sean Christopherson
2019-05-23 15:38                                                                                       ` Andy Lutomirski
2019-05-23 23:40                                                                                         ` Sean Christopherson
2019-05-24  1:17                                                                                           ` Andy Lutomirski
2019-05-24  7:24                                                                                             ` Xing, Cedric
2019-05-24 15:41                                                                                               ` Stephen Smalley
2019-05-24 16:57                                                                                                 ` Xing, Cedric
2019-05-24 17:42                                                                                                 ` Sean Christopherson
2019-05-24 17:54                                                                                                   ` Andy Lutomirski
2019-05-24 17:56                                                                                                     ` Sean Christopherson
2019-05-24 17:54                                                                                                   ` Sean Christopherson
2019-05-24 18:34                                                                                                     ` Xing, Cedric
2019-05-24 19:13                                                                                                       ` Sean Christopherson
2019-05-24 19:30                                                                                                         ` Andy Lutomirski
2019-05-24 20:42                                                                                                         ` Xing, Cedric
2019-05-24 21:11                                                                                                           ` Sean Christopherson
2019-05-24 19:37                                                                                                       ` Andy Lutomirski
2019-05-24 20:03                                                                                                         ` Sean Christopherson
2019-05-24 20:58                                                                                                           ` Xing, Cedric
2019-05-24 21:27                                                                                                           ` Andy Lutomirski
2019-05-24 22:41                                                                                                             ` Sean Christopherson [this message]
2019-05-24 23:42                                                                                                               ` Andy Lutomirski
2019-05-25 22:40                                                                                                                 ` Xing, Cedric
2019-05-26  0:57                                                                                                                   ` Andy Lutomirski
2019-05-26  6:09                                                                                                                     ` Xing, Cedric
2019-05-28 20:24                                                                                                                       ` Sean Christopherson
2019-05-28 20:48                                                                                                                         ` Andy Lutomirski
2019-05-28 21:41                                                                                                                           ` Sean Christopherson
2019-05-30  5:38                                                                                                                             ` Xing, Cedric
2019-05-30 17:21                                                                                                                               ` Sean Christopherson
2019-05-29 14:08                                                                                                                         ` Stephen Smalley
2019-05-30  6:12                                                                                                                           ` Xing, Cedric
2019-05-30 14:22                                                                                                                             ` Stephen Smalley
2019-05-30 14:31                                                                                                                               ` Andy Lutomirski
2019-05-30 15:04                                                                                                                                 ` Stephen Smalley
2019-05-30 16:14                                                                                                                                   ` Andy Lutomirski
2019-05-30 18:01                                                                                                                                     ` Sean Christopherson
2019-05-30 19:20                                                                                                                                       ` Andy Lutomirski
2019-05-30 21:16                                                                                                                                         ` Sean Christopherson
2019-05-30 21:23                                                                                                                                           ` Andy Lutomirski
2019-05-30 21:36                                                                                                                                             ` Sean Christopherson
2019-06-03  9:12                                                                                                                                               ` Dr. Greg
2019-06-03 21:08                                                                                                                                               ` Jarkko Sakkinen
2019-05-30 21:48                                                                                                                                         ` Xing, Cedric
2019-05-30 22:24                                                                                                                                           ` Sean Christopherson
2019-06-03 21:05                                                                                                                                       ` Jarkko Sakkinen
2019-06-03 20:54                                                                                                                                     ` Jarkko Sakkinen
2019-06-03 21:23                                                                                                                                       ` Sean Christopherson
2019-06-04 11:39                                                                                                                                         ` Jarkko Sakkinen
2019-06-03 21:37                                                                                                                                       ` Andy Lutomirski
2019-06-03 20:47                                                                                                                                   ` Jarkko Sakkinen
2019-06-03 20:43                                                                                                                                 ` Jarkko Sakkinen
2019-05-25 17:31                                                                                                           ` Dr. Greg
2019-05-24 16:43                                                                                               ` Andy Lutomirski
2019-05-24 17:07                                                                                                 ` Sean Christopherson
2019-05-24 17:51                                                                                                   ` Andy Lutomirski
2019-05-24 14:44                                                                                         ` Stephen Smalley
2019-05-27 13:48                                                                                         ` Jarkko Sakkinen
2019-05-23 19:58                                                                                       ` Sean Christopherson
2019-05-27 13:34                                                                                       ` Jarkko Sakkinen
2019-05-27 13:38                                                                                         ` Jarkko Sakkinen
2019-05-23  8:10                                                                                 ` Jarkko Sakkinen
2019-05-23  8:23                                                                                   ` Jarkko Sakkinen
2019-05-20 11:36                                                               ` Jarkko Sakkinen
2019-05-15 10:35                                                       ` [PATCH v20 00/28] Intel SGX1 support Jarkko Sakkinen
2019-05-15 11:00                                                         ` Jarkko Sakkinen
2019-05-15 14:27                                                           ` Andy Lutomirski
2019-05-16  5:07                                                             ` Jarkko Sakkinen
2019-05-16  6:51                                                               ` Jarkko Sakkinen
2019-05-16  7:02                                                                 ` Jarkko Sakkinen
2019-05-15 13:21                                                         ` Sean Christopherson
2019-05-16  5:01                                                           ` Jarkko Sakkinen
2019-05-15  8:49                                                     ` Jarkko Sakkinen
2019-05-15  9:58                                                       ` Jarkko Sakkinen
2019-05-14 14:33                                               ` Haitao Huang
2019-05-14 15:17                                                 ` Andy Lutomirski
2019-05-14 15:30                                                   ` Haitao Huang
2019-05-14 20:45                                                     ` Andy Lutomirski
2019-05-14 21:08                                                       ` Haitao Huang
2019-05-14 21:58                                                       ` Xing, Cedric
2019-05-15  5:15                                                         ` Haitao Huang
2019-05-10 18:44                                       ` Xing, Cedric
2019-04-19 21:34                       ` Thomas Gleixner
2019-04-19 21:05               ` Jethro Beekman
2019-04-18 18:07   ` Andy Lutomirski
2019-04-22 20:42 ` [RFC PATCH v1 0/3] An alternative __vdso_sgx_enter_enclave() to allow enclave/host parameter passing using untrusted stack Cedric Xing
2019-04-22 22:05   ` Sean Christopherson
2019-04-23  0:37   ` Cedric Xing
2019-04-24  6:26   ` [RFC PATCH v2 " Cedric Xing
2019-07-10 11:17     ` Jarkko Sakkinen
2019-07-10 18:08       ` Xing, Cedric
2019-07-10 22:46         ` Jarkko Sakkinen
2019-07-10 22:54           ` Xing, Cedric
2019-07-11  9:36             ` Jarkko Sakkinen
2019-07-11 19:49               ` Xing, Cedric
2019-07-10 23:15           ` Jarkko Sakkinen
2019-07-10 23:37             ` Xing, Cedric
2019-07-11  9:38               ` Jarkko Sakkinen
2019-07-11 15:50                 ` Sean Christopherson
2019-07-11 17:59                   ` Jarkko Sakkinen
2019-07-11 19:51                 ` Xing, Cedric
2019-07-11  4:21     ` [RFC PATCH v3 0/3] x86/sgx: Amend vDSO API to allow enclave/host parameter passing on " Cedric Xing
2019-07-12  3:28       ` Jarkko Sakkinen
2019-07-13  6:51       ` [RFC PATCH v4 " Cedric Xing
2019-07-13  6:51       ` [RFC PATCH v4 1/3] selftests/x86/sgx: Fix Makefile for SGX selftest Cedric Xing
2019-07-13 15:10         ` Jarkko Sakkinen
2019-07-13 15:15           ` Jarkko Sakkinen
2019-07-13 17:29             ` Xing, Cedric
2019-07-14 14:53               ` Jarkko Sakkinen
2019-07-13  6:51       ` [RFC PATCH v4 2/3] x86/vdso: Modify __vdso_sgx_enter_enclave() to allow parameter passing on untrusted stack Cedric Xing
2019-07-13 15:04         ` Jarkko Sakkinen
2019-07-13 15:06           ` Jarkko Sakkinen
2019-07-13  6:51       ` [RFC PATCH v4 3/3] selftests/x86/sgx: Augment SGX selftest to test vDSO API Cedric Xing
2019-07-13 15:21         ` Jarkko Sakkinen
2019-07-13 17:20           ` Xing, Cedric
2019-07-14 14:40             ` Jarkko Sakkinen
2019-07-14 14:47             ` Jarkko Sakkinen
2019-07-17 21:57               ` Xing, Cedric
2019-07-11  4:21     ` [RFC PATCH v3 1/3] selftests/x86: Fixed Makefile for SGX selftest Cedric Xing
2019-07-11  4:21     ` [RFC PATCH v3 2/3] x86/vdso: Modify __vdso_sgx_enter_enclave() to allow parameter passing on untrusted stack Cedric Xing
2019-07-11  9:50       ` Jarkko Sakkinen
2019-07-11  9:53       ` Jarkko Sakkinen
2019-07-11 15:42         ` Sean Christopherson
2019-07-11 17:55           ` Jarkko Sakkinen
2019-07-11 17:58             ` Sean Christopherson
2019-07-12  3:16               ` Jarkko Sakkinen
2019-07-13  7:00                 ` Xing, Cedric
2019-07-11  4:21     ` [RFC PATCH v3 3/3] selftests/x86: Augment SGX selftest to test new __vdso_sgx_enter_enclave() and its callback interface Cedric Xing
2019-04-24  6:26   ` [RFC PATCH v2 1/3] selftests/x86: Fixed Makefile for SGX selftest Cedric Xing
2019-07-12  3:19     ` Jarkko Sakkinen
2019-07-13  6:58       ` Xing, Cedric
2019-04-24  6:26   ` [RFC PATCH v2 2/3] x86/vdso: Modify __vdso_sgx_enter_enclave() to allow parameter passing on untrusted stack Cedric Xing
2019-04-24 19:04     ` Sean Christopherson
2019-04-25 23:31       ` Xing, Cedric
2019-04-26 21:00         ` Sean Christopherson
2019-05-02  8:28           ` Jarkko Sakkinen
2019-04-24  6:26   ` [RFC PATCH v2 3/3] selftests/x86: Augment SGX selftest to test new __vdso_sgx_enter_enclave() and its callback interface Cedric Xing
2019-07-12  3:25     ` Jarkko Sakkinen
2019-07-13  7:03       ` Xing, Cedric
2019-04-22 20:42 ` [RFC PATCH v1 1/3] selftests/x86: Fixed Makefile for SGX selftest Cedric Xing
2019-04-23  0:37   ` Cedric Xing
2019-04-22 20:42 ` [RFC PATCH v1 2/3] x86/vdso: Modify __vdso_sgx_enter_enclave() to allow parameter passing on untrusted stack Cedric Xing
2019-04-22 22:26   ` Sean Christopherson
2019-04-23  0:37   ` Cedric Xing
2019-04-23  1:25   ` Andy Lutomirski
2019-04-24 17:56     ` Xing, Cedric
2019-04-23 19:26   ` Sean Christopherson
2019-04-23 19:44     ` Andy Lutomirski
2019-04-22 20:42 ` [RFC PATCH v1 3/3] selftests/x86: Augment SGX selftest to test new __vdso_sgx_enter_enclave() and its callback interface Cedric Xing
2019-04-23  0:37   ` Cedric Xing
2019-04-23  1:29   ` Andy Lutomirski
2019-04-23  1:48     ` Sean Christopherson
2019-04-23 18:59     ` Sean Christopherson
2019-04-23 19:07       ` Andy Lutomirski
2019-04-23 20:11         ` Sean Christopherson
2019-04-23 11:56 ` [PATCH v20 00/28] Intel SGX1 support Jarkko Sakkinen
2019-04-23 16:52   ` Andy Lutomirski
2019-04-24 12:17     ` Jarkko Sakkinen
2019-05-08 13:45       ` Jarkko Sakkinen

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