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From: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
To: Andy Lutomirski <luto@amacapital.net>
Cc: Sean Christopherson <sean.j.christopherson@intel.com>,
	Andy Lutomirski <luto@kernel.org>,
	linux-sgx@vger.kernel.org, Dave Hansen <dave.hansen@intel.com>,
	Cedric Xing <cedric.xing@intel.com>,
	Jethro Beekman <jethro@fortanix.com>,
	"Dr . Greg Wettstein" <greg@enjellic.com>
Subject: Re: [PATCH 5/7] x86/sgx: Add flag to zero added region instead of copying from source
Date: Mon, 10 Jun 2019 20:06:23 +0300
Message-ID: <20190610170623.GB10114@linux.intel.com> (raw)
In-Reply-To: <A948B013-BCA7-4C76-B816-CC27F38BF761@amacapital.net>

On Fri, Jun 07, 2019 at 12:32:23PM -0700, Andy Lutomirski wrote:
> Sigh.
> 
> It seems silly to add a workaround for a language that has trouble
> calling somewhat-but-not-too-slow syscalls or ioctls.
> 
> How about fixing this in Go directly?  Either convince the golang
> people to add a way to allocate a real thread for a particular region
> of code or have the Go SGX folks write a bit of C code to do  a whole
> bunch of ioctls and have Go call *that*.  Then the mess stays in Go
> where it belongs.

A worker thread would be only appropriate if the existing SGX code was
already in the mainline because then it would break the user space.

Doing it either way right now does not break anything so there is no
case for having it.

/Jarkko

  reply index

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-05 19:48 [PATCH 0/7] x86/sgx: Clean up and enhance add pages ioctl Sean Christopherson
2019-06-05 19:48 ` [PATCH 1/7] x86/sgx: Remove dead code to handle non-existent IOR ioctl Sean Christopherson
2019-06-05 19:48 ` [PATCH 2/7] x86/sgx: Remove unnecessary @cmd parameter from ioctl helpers Sean Christopherson
2019-06-05 19:48 ` [PATCH 3/7] x86/sgx: Let ioctl helpers do copy to/from user Sean Christopherson
2019-06-05 19:48 ` [PATCH 4/7] x86/sgx: Allow userspace to add multiple pages in single ioctl() Sean Christopherson
2019-06-06 15:47   ` Jarkko Sakkinen
2019-06-13  0:43   ` Jethro Beekman
2019-06-13 16:51     ` Sean Christopherson
2019-06-13 19:05       ` Andy Lutomirski
2019-06-13 19:15         ` Sean Christopherson
2019-06-13 19:45       ` Xing, Cedric
2019-06-05 19:48 ` [PATCH 5/7] x86/sgx: Add flag to zero added region instead of copying from source Sean Christopherson
2019-06-06 17:20   ` Andy Lutomirski
2019-06-06 17:32     ` Sean Christopherson
2019-06-07 19:32       ` Andy Lutomirski
2019-06-10 17:06         ` Jarkko Sakkinen [this message]
2019-06-10 18:09         ` Xing, Cedric
2019-06-10 18:41           ` Sean Christopherson
2019-06-10 18:53         ` Sean Christopherson
2019-06-13  0:38           ` Jethro Beekman
2019-06-13 13:46             ` Sean Christopherson
2019-06-13 16:16               ` Andy Lutomirski
2019-06-13 16:54                 ` Sean Christopherson
2019-06-05 19:48 ` [PATCH 6/7] x86/sgx: Use the actual zero page as the source when adding zero pages Sean Christopherson
2019-06-05 19:48 ` [PATCH 7/7] x86/sgx: Add a reserved field to sgx_enclave_add_region to drop 'packed' Sean Christopherson
2019-06-05 19:59   ` Dave Hansen
2019-06-05 20:00     ` Andy Lutomirski
2019-06-12 15:14   ` Jarkko Sakkinen
2019-06-12 15:23     ` Sean Christopherson
2019-06-13  0:44       ` Jethro Beekman
2019-06-13 15:38       ` Jarkko Sakkinen
2019-06-12 15:16 ` [PATCH 0/7] x86/sgx: Clean up and enhance add pages ioctl Jarkko Sakkinen
2019-06-12 18:14   ` Jarkko Sakkinen

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