Re: [PATCH v4 0/3] Optimize tlbflush path

[Atish Patra]

On Thu, 2019-10-24 at 20:09 -0700, Paul Walmsley wrote:
> On Fri, 30 Aug 2019, Paul Walmsley wrote:
> 
> > On Thu, 22 Aug 2019, Atish Patra wrote:
> > 
> > > This series adds few optimizations to reduce the trap cost in the
> > > tlb
> > > flush path. We should only make SBI calls to remote tlb flush
> > > only if
> > > absolutely required. 
> > 
> > The patches look great.  My understanding is that these
> > optimization 
> > patches may actually be a partial workaround for the TLB flushing
> > bug that 
> > we've been looking at for the last month or so, which can corrupt
> > memory 
> > or crash the system.
> 
> I don't think we're any closer to root-causing this
> issue.  Meanwhile, 
> OpenSBI has merged patches to work around it.  So since many of us
> have 
> looked at Atish's TLB optimization patches, and we all think they
> are 
> useful optimizations, let's plan to merge it for v5.5-rc1.
> 
> 

Thanks. These patches still applies cleanly on 5.4-rc5.
Let me know if you need something from myside.

> - Paul

-- 
Regards,
Atish