Re: [PATCH 1/3] memory: reintroduce BQL-free fine-grained PIO/MMIO

[Igor Mammedov <imammedo@redhat.com>]

On Mon, 30 Jun 2025 12:02:25 +0200
Gerd Hoffmann <kraxel@redhat.com> wrote:

>   Hi,
> 
> > As you've said in comment
> > https://bugzilla.redhat.com/show_bug.cgi?id=1322713#c6
> > it's strange that patch causes issues at all, especially with
> > '-smp 1' as in reproducer.
> > 
> > Also repeated with -smp x>1, it still worked fine.
> > 
> > Perhaps issue was elsewhere after all.  
> 
> Yea, looks pretty much like this.  Guess we do not need the
> 'make only read access lockless' part then.

Yep, I'll ditch readonly and instead add proper fine-grained locking
to PM and HPET timers instead (HPET needs it anyways as Peter pointed out,
while PM will be just a collateral)


> 
> take care,
>   Gerd
>