Re: [PATCH RFC v2 2/4] x86/bus_lock: Handle warn and fatal in #DB for bus lock

[Fenghua Yu]

Hi, PeterZ,

On Thu, Oct 29, 2020 at 10:27:47AM +0100, Peter Zijlstra wrote:
> On Wed, Oct 28, 2020 at 08:28:02PM +0000, Fenghua Yu wrote:
> > diff --git a/arch/x86/include/uapi/asm/debugreg.h b/arch/x86/include/uapi/asm/debugreg.h
> > index d95d080b30e3..61078319fc6c 100644
> > --- a/arch/x86/include/uapi/asm/debugreg.h
> > +++ b/arch/x86/include/uapi/asm/debugreg.h
> > @@ -16,7 +16,7 @@
> >     are either reserved or not of interest to us. */
> >  
> >  /* Define reserved bits in DR6 which are always set to 1 */
> > -#define DR6_RESERVED	(0xFFFF0FF0)
> > +#define DR6_RESERVED	(0xFFFF07F0)
> 
> NAK

You are right. I will remove this piece of code in the next version.

Thank you very much for your review!

-Fenghua