linux-kernel - Re: [PATCH v22 16/24] x86/vdso: Add support for exception fixup in vDSO functions

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Message-ID: <20191005183939.GB9159@linux.intel.com>
Date:   Sat, 5 Oct 2019 11:39:39 -0700
From:   Sean Christopherson <sean.j.christopherson@...el.com>
To:     Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
Cc:     linux-kernel@...r.kernel.org, x86@...nel.org,
        linux-sgx@...r.kernel.org, akpm@...ux-foundation.org,
        dave.hansen@...el.com, nhorman@...hat.com, npmccallum@...hat.com,
        serge.ayoun@...el.com, shay.katz-zamir@...el.com,
        haitao.huang@...el.com, andriy.shevchenko@...ux.intel.com,
        tglx@...utronix.de, kai.svahn@...el.com, bp@...en8.de,
        josh@...htriplett.org, luto@...nel.org, kai.huang@...el.com,
        rientjes@...gle.com, cedric.xing@...el.com,
        Andy Lutomirski <luto@...capital.net>,
        Dave Hansen <dave.hansen@...ux.intel.com>
Subject: Re: [PATCH v22 16/24] x86/vdso: Add support for exception fixup in
 vDSO functions

On Fri, Oct 04, 2019 at 09:52:21PM +0300, Jarkko Sakkinen wrote:
> On Thu, Oct 03, 2019 at 05:15:00PM -0700, Sean Christopherson wrote:
> > I'll tackle this tomorrow.  I've been working on the feature control MSR
> > series and will get that sent out tomorrow as well.  I should also be able
> > to get you the multi-page EADD patch.
> 
> Great I'll compose the patch set during the weekend and take Monday off
> so you have the full work day to get everything (probably send the patch
> set on Sunday).

I wasn't able to finish everything this morning (not even close).  The
vDSO code and documentation was in rough shape.  I finished cleaning it
up, but still need to test and rewrite the changelog.

If you really want to send v23 this weekend I can work more tonight
and/or tomorrow morning.  My preference would be to just punt a few more
days.

My todo list for v23:

  - Test vDSO changes and craft proper patches
  - Rewrite vDSO changelog
  - Rewrite vDSO exception fixup changelog
  - Implement multi-page EADD

My todo list post-v23:
  - Write SGX programming model documentation (requested by Casey)