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

[Jarkko Sakkinen]

On Mon, Oct 07, 2019 at 02:38:17AM +0300, Jarkko Sakkinen wrote:
> 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 don't see why the multipage version could not be ioctl of its own and
> ioctl's can then use the same internals. Having a single page version
> does not cause any kind of bottleneck really.
> 
> Thus, sending now v23 based on these conclusions.

Sure, you can argue it is redudant but I see it as a nice convenience
for simple stuff that does not really hurt at all.

/Jarkko