linux-sgx.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
To: Nathaniel McCallum <npmccallum@redhat.com>
Cc: Sean Christopherson <sean.j.christopherson@intel.com>,
	Cedric Xing <cedric.xing@intel.com>,
	Jethro Beekman <jethro@fortanix.com>,
	Andy Lutomirski <luto@amacapital.net>,
	linux-sgx@vger.kernel.org
Subject: Re: [PATCH for_v29 v2 0/5] x86/sgx: Make vDSO callable from C
Date: Wed, 1 Apr 2020 11:17:56 +0300	[thread overview]
Message-ID: <20200401081756.GA17325@linux.intel.com> (raw)
In-Reply-To: <CAOASepPgNWHg8RVAU5b6CDE4K6LwhiHHdHUiN57ay6T+xAx7Ow@mail.gmail.com>

On Tue, Mar 31, 2020 at 09:40:24AM -0400, Nathaniel McCallum wrote:
> On Tue, Mar 31, 2020 at 7:58 AM Jarkko Sakkinen
> <jarkko.sakkinen@linux.intel.com> wrote:
> >
> > On Mon, Mar 30, 2020 at 05:42:29PM -0400, Nathaniel McCallum wrote:
> > > On Mon, Mar 30, 2020 at 4:48 PM Jarkko Sakkinen
> > > <jarkko.sakkinen@linux.intel.com> wrote:
> > > >
> > > > On Mon, Mar 30, 2020 at 11:08:06AM -0700, Sean Christopherson wrote:
> > > > > Nathaniel pointed out that __vdso_sgx_enter_enclave() is tantalizingly
> > > > > close to being callable from C (with caveats and a cooperative enclave).
> > > > > The missing pieces are preserving %rbx and taking @leaf as a standard
> > > > > parameter.
> > > > >
> > > > > v2:
> > > > >   - Rebase to Jarkko's latest master, commit 402fb35a477a, "docs: ...")
> > > > >   - Add CFI directive for RBX. [Cedric]
> > > >
> > > > I'm sorry for throwing stick's constantly but I think having a real
> > > > ELF loader is for better.
> 
> This statement seems like you are juxtaposing having
> __vdso_sgx_enter_enclave() be potentially C-compatible with having an
> ELF-loader. These are not incompabile. __vdso_sgx_enter_enclave() can
> be C-callable *and* you can have an ELF loader.

I'm not honestly sure what this is about but my comment was about heavy
rebasing of the GIT tree as I rewrote the selftest last week.

/Jarkko

  reply	other threads:[~2020-04-01  8:18 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-30 18:08 [PATCH for_v29 v2 0/5] x86/sgx: Make vDSO callable from C Sean Christopherson
2020-03-30 18:08 ` [PATCH for_v29 v2 1/5] x86/sgx: vdso: Make __vdso_sgx_enter_enclave() callable from C code Sean Christopherson
2020-03-30 21:04   ` Jarkko Sakkinen
2020-04-17 15:05     ` Sean Christopherson
2020-04-17 18:57       ` Jarkko Sakkinen
2020-03-30 18:08 ` [PATCH for_v29 v2 2/5] x86/sgx: vdso: Define a typedef for __vdso_sgx_enter_enclave Sean Christopherson
2020-03-30 21:10   ` Jarkko Sakkinen
2020-03-30 18:08 ` [PATCH for_v29 v2 3/5] selftests/sgx: Pass EENTER to vDSO wrapper instead of hardcoding Sean Christopherson
2020-03-30 21:07   ` Jarkko Sakkinen
2020-03-30 21:11     ` Jarkko Sakkinen
2020-03-30 18:08 ` [PATCH for_v29 v2 4/5] selftests/sgx: Stop clobbering non-volatile registers Sean Christopherson
2020-03-30 18:08 ` [PATCH for_v29 v2 5/5] selftests/sgx: Add selftest to invoke __vsgx_enter_enclave() from C Sean Christopherson
2020-03-30 20:48 ` [PATCH for_v29 v2 0/5] x86/sgx: Make vDSO callable " Jarkko Sakkinen
2020-03-30 21:42   ` Nathaniel McCallum
2020-03-31 11:58     ` Jarkko Sakkinen
2020-03-31 13:40       ` Nathaniel McCallum
2020-04-01  8:17         ` Jarkko Sakkinen [this message]
2020-04-01 13:06           ` Nathaniel McCallum
2020-04-01 14:49             ` Sean Christopherson
2020-04-02 20:01               ` Jarkko Sakkinen
2020-04-02 19:49             ` Jarkko Sakkinen

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20200401081756.GA17325@linux.intel.com \
    --to=jarkko.sakkinen@linux.intel.com \
    --cc=cedric.xing@intel.com \
    --cc=jethro@fortanix.com \
    --cc=linux-sgx@vger.kernel.org \
    --cc=luto@amacapital.net \
    --cc=npmccallum@redhat.com \
    --cc=sean.j.christopherson@intel.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).