linux-kernel - Re: [PATCH v5 1/7] x86/sgx: Provide indication of life-cycle of EPC pages

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Date:   Wed, 22 Sep 2021 08:17:53 +0300
From:   Jarkko Sakkinen <jarkko@...nel.org>
To:     "Luck, Tony" <tony.luck@...el.com>,
        Sean Christopherson <seanjc@...gle.com>,
        "Hansen, Dave" <dave.hansen@...el.com>
Cc:     "Zhang, Cathy" <cathy.zhang@...el.com>,
        "linux-sgx@...r.kernel.org" <linux-sgx@...r.kernel.org>,
        "x86@...nel.org" <x86@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v5 1/7] x86/sgx: Provide indication of life-cycle of EPC
 pages

On Tue, 2021-09-21 at 21:34 +0000, Luck, Tony wrote:
> > > Since there are multiple uses of the "owner" field with different types
> > > change the sgx_epc_page structure to define an anonymous union with
> > > each of the uses explicitly called out.
> > 
> > But it's still always a pointer.
> > 
> > And not only that, but two alternative fields in that union have *exactly* the
> > same type, so it's kind of artifically representing the problem more complex
> > than it really is.
> 
> Bother! I seem to have jumbled some old bits of v4 into this series.
> 
> I agree that we just want "void *owner; here.  I even made the changes.
> Then managed to lose them while updating.
> 
> I'll find the bits I lost and re-merge them in.
> 
> -Tony

Yeah, ok, cool, thank you. Just reporting what I was observing :-)

/Jarkko