From: Jethro Beekman <jethro@fortanix.com>
To: Dave Hansen <dave.hansen@intel.com>,
Raoul Strackx <raoul.strackx@fortanix.com>,
Jarkko Sakkinen <jarkko@kernel.org>,
Dave Hansen <dave.hansen@linux.intel.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
linux-sgx@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH RESEND 0/3] x86/sgx: eextend ioctl
Date: Thu, 1 Apr 2021 19:59:07 +0200 [thread overview]
Message-ID: <1101066d-7d12-420a-a2a1-08ba9fdce8bf@fortanix.com> (raw)
In-Reply-To: <0498080e-6fdc-ed6d-8efa-d9c3265fe7e5@intel.com>
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On 2021-04-01 18:11, Dave Hansen wrote:
> On 4/1/21 7:56 AM, Raoul Strackx wrote:
>>
>> SOLUTION OF THIS PATCH
>> This patch adds a new ioctl to enable userspace to execute EEXTEND leaf
>> functions per 256 bytes of enclave memory. This enables enclaves to be
>> build as specified by enclave providers.
>
> I think tying the user ABI to the SGX architecture this closely is a
> mistake.
>
> Do we need another ioctl() or can we just relax the existing add_pages
> ioctl() to allow unaligned addresses?
>
Some version of the driver used to pass a 16-bit bitset of which of the 16 256-byte parts of a 4096-byte page to measure. This was removed at some point in favor of a separate ioctl to be added later. That is this. See the discussion linked in the cover letter.
--
Jethro Beekman | Fortanix
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prev parent reply other threads:[~2021-04-01 18:17 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-31 12:50 [PATCH RESEND 0/3] x86/sgx: eextend ioctl Raoul Strackx
2021-03-31 15:53 ` Dave Hansen
2021-04-01 14:56 ` Raoul Strackx
2021-04-01 16:11 ` Dave Hansen
2021-04-01 17:49 ` Raoul Strackx
2021-04-01 18:40 ` Dave Hansen
2021-04-02 8:38 ` Jethro Beekman
2021-04-02 15:53 ` Dave Hansen
2021-04-02 18:31 ` Jethro Beekman
2021-04-02 18:42 ` Dave Hansen
2021-04-02 19:38 ` Jethro Beekman
2021-04-02 19:50 ` Dave Hansen
2021-04-02 20:20 ` Jethro Beekman
2021-04-02 20:48 ` Dave Hansen
2021-04-08 15:27 ` Jethro Beekman
2021-04-08 15:54 ` Dave Hansen
2021-04-04 16:04 ` Jarkko Sakkinen
2021-04-08 15:07 ` Jethro Beekman
2021-04-01 17:59 ` Jethro Beekman [this message]
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