linux-kernel - Re: [PATCH v39 11/24] x86/sgx: Add SGX enclave driver

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Message-ID: <737f452f-b309-5bfa-0a7b-819a36f78748@intel.com>
Date:   Wed, 14 Oct 2020 13:16:01 -0700
From:   Dave Hansen <dave.hansen@...el.com>
To:     Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>,
        Greg KH <gregkh@...uxfoundation.org>
Cc:     Haitao Huang <haitao.huang@...ux.intel.com>, x86@...nel.org,
        linux-sgx@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-security-module@...r.kernel.org, linux-mm@...ck.org,
        Andrew Morton <akpm@...ux-foundation.org>,
        Matthew Wilcox <willy@...radead.org>,
        Jethro Beekman <jethro@...tanix.com>,
        Chunyang Hui <sanqian.hcy@...fin.com>,
        Jordan Hand <jorhand@...ux.microsoft.com>,
        Nathaniel McCallum <npmccallum@...hat.com>,
        Seth Moore <sethmo@...gle.com>,
        Darren Kenny <darren.kenny@...cle.com>,
        Sean Christopherson <sean.j.christopherson@...el.com>,
        Suresh Siddha <suresh.b.siddha@...el.com>,
        andriy.shevchenko@...ux.intel.com, asapek@...gle.com, bp@...en8.de,
        cedric.xing@...el.com, chenalexchen@...gle.com,
        conradparker@...gle.com, cyhanish@...gle.com,
        haitao.huang@...el.com, kai.huang@...el.com, kai.svahn@...el.com,
        kmoy@...gle.com, ludloff@...gle.com, luto@...nel.org,
        nhorman@...hat.com, puiterwijk@...hat.com, rientjes@...gle.com,
        tglx@...utronix.de, yaozhangx@...gle.com, mikko.ylinen@...el.com
Subject: Re: [PATCH v39 11/24] x86/sgx: Add SGX enclave driver

On 10/8/20 11:44 PM, Jarkko Sakkinen wrote:
>> Why is this so special that you need a subdirectory for a single driver
>> with a mere 2 device nodes?  Do any other misc drivers have a new
>> subdirectory in /dev/ for them?
> Absolutely nothing as far as I'm concerned. Should have done that
> already at the time when I switched to misc based on your feedback. I
> was acting too reactive I guess. For sure I'll rename.

Plus, if anyone *REALLY* cares, they can get their precious directory
back with a couple of lines of udev rules, I believe:

KERNEL=="sgx_provision", SYMLINK+="sgx/provision"
KERNEL=="sgx_enclave", SYMLINK+="sgx/enclave"