linux-kernel - Re: [PATCH v38 16/24] x86/sgx: Add a page reclaimer

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Message-ID: <20200923145239.GG5160@linux.intel.com>
Date:   Wed, 23 Sep 2020 17:52:39 +0300
From:   Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
To:     Borislav Petkov <bp@...en8.de>
Cc:     x86@...nel.org, linux-sgx@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        Jethro Beekman <jethro@...tanix.com>,
        Jordan Hand <jorhand@...ux.microsoft.com>,
        Nathaniel McCallum <npmccallum@...hat.com>,
        Chunyang Hui <sanqian.hcy@...fin.com>,
        Seth Moore <sethmo@...gle.com>,
        Sean Christopherson <sean.j.christopherson@...el.com>,
        akpm@...ux-foundation.org, andriy.shevchenko@...ux.intel.com,
        asapek@...gle.com, cedric.xing@...el.com, chenalexchen@...gle.com,
        conradparker@...gle.com, cyhanish@...gle.com,
        dave.hansen@...el.com, haitao.huang@...el.com,
        josh@...htriplett.org, 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
Subject: Re: [PATCH v38 16/24] x86/sgx: Add a page reclaimer

On Tue, Sep 22, 2020 at 04:24:13PM +0200, Borislav Petkov wrote:
> On Tue, Sep 22, 2020 at 05:03:23PM +0300, Jarkko Sakkinen wrote:
> > On Tue, Sep 22, 2020 at 12:45:38PM +0200, Borislav Petkov wrote:
> > > > + * %SGX_ENCL_PAGE_VA_OFFSET_MASK:	Holds the offset in the Version Array
> > > > + *					(VA) page for a swapped page.
> > > >   * %SGX_ENCL_PAGE_ADDR_MASK:		Holds the virtual address of the page.
> > > >   *
> > > >   * The page address for SECS is zero and is used by the subsystem to recognize
> > > 
> > > ...
> > 
> > So what's wrong over here?
> 
> Nothing - that's just an ellipsis: https://en.wikipedia.org/wiki/Ellipsis
> 
> I do that because otherwise you'd have to scroll through pages of quoted
> mail for no good reason and that ain't friendly at all. And I notice
> people not trimming their replies and not quoting only the text they
> reply to. They should not wonder if their emails remain unread.
> 
> Thx for the rest.

OK, I'm just almost paranoic in not addressing all feedback, thanks
for the explanation :-)

Like in this version, I'll try to xref all changes so it will be at
least easier spot if something is missing.

> 
> -- 
> Regards/Gruss,
>     Boris.
> 
> https://people.kernel.org/tglx/notes-about-netiquette

/Jarkko