Re: [patch V3 00/14] futex: Address the robust futex unlock race for real

Mark Rutland
2026-03-31T14:13:58Z

On Tue, Mar 31, 2026 at 09:59:17AM -0300, André Almeida wrote:
> Hey Mark,

Hi André,

> Em 30/03/2026 10:45, Mark Rutland escreveu:
> > On Mon, Mar 30, 2026 at 02:01:58PM +0200, Thomas Gleixner wrote:
> > >
> > > 2) VDSO based unlock and pointer clearing helpers with a fix-up function
> > > in the kernel when user space was interrupted within the critical
> > > section.
> >
> > I see the vdso bits in this series are specific to x86. Do other
> > architectures need something here?
> >
> > I might be missing some context; I'm not sure whether that's not
> > necessary or just not implemented by this series, and so I'm not sure
> > whether arm64 folk and other need to go dig into this.
>
> If you haven't done it yet, I would like to give a shot to implement the
> arm64 version of the vDSO.

Oh, please do have a go!

I was just trying to figure out whether someone needed to do this,
rather than asserting that I would.

I'm happy to review/test patches for this.

Mark.