Re: [PATCH] arm64: topology: Stop using MPIDR for topology information

2020-09-09 Thread Valentin Schneider
On 03/09/20 02:44, B wrote: >> -Original Message- >> From: Valentin Schneider [mailto:valentin.schnei...@arm.com] >> On 02/09/20 04:24, B wrote: >> > I agree with your idea to remove the topology functionality of MPIDR , >> > but I think we need also consider ARM32 and GIC. >> > >> >> Cou

Re: [PATCH] arm64: topology: Stop using MPIDR for topology information

2020-09-07 Thread Will Deacon
On Sat, 29 Aug 2020 14:00:16 +0100, Valentin Schneider wrote: > In the absence of ACPI or DT topology data, we fallback to haphazardly > decoding *something* out of MPIDR. Sadly, the contents of that register are > mostly unusable due to the implementation leniancy and things like Aff0 > having to

RE: [PATCH] arm64: topology: Stop using MPIDR for topology information

2020-09-02 Thread Zengtao (B)
bin Murphy; Jeremy Linton; > Dietmar Eggemann; Morten Rasmussen > Subject: Re: [PATCH] arm64: topology: Stop using MPIDR for topology > information > > > On 02/09/20 04:24, B wrote: > > Hi Valentin: > > > >> -Original Message- > >> From

Re: [PATCH] arm64: topology: Stop using MPIDR for topology information

2020-09-02 Thread Valentin Schneider
On 02/09/20 04:24, B wrote: > Hi Valentin: > >> -Original Message- >> From: Valentin Schneider [mailto:valentin.schnei...@arm.com] >> Sent: Saturday, August 29, 2020 9:00 PM >> To: linux-kernel@vger.kernel.org; linux-arm-ker...@lists.infradead.org >> Cc: Catalin Marinas; Will Deacon; Sude

Re: [PATCH] arm64: topology: Stop using MPIDR for topology information

2020-09-02 Thread Valentin Schneider
On 02/09/20 11:04, Sudeep Holla wrote: > On Sat, Aug 29, 2020 at 02:00:16PM +0100, Valentin Schneider wrote: >> In the absence of ACPI or DT topology data, we fallback to haphazardly >> decoding *something* out of MPIDR. Sadly, the contents of that register are >> mostly unusable due to the imple

Re: [PATCH] arm64: topology: Stop using MPIDR for topology information

2020-09-02 Thread Sudeep Holla
On Wed, Sep 02, 2020 at 03:24:17AM +, Zengtao (B) wrote: > Hi Valentin: > > > -Original Message- > > From: Valentin Schneider [mailto:valentin.schnei...@arm.com] > > Sent: Saturday, August 29, 2020 9:00 PM > > To: linux-kernel@vger.kernel.org; linux-arm-ker...@lists.infradead.org > > Cc

Re: [PATCH] arm64: topology: Stop using MPIDR for topology information

2020-09-02 Thread Sudeep Holla
On Sat, Aug 29, 2020 at 02:00:16PM +0100, Valentin Schneider wrote: > In the absence of ACPI or DT topology data, we fallback to haphazardly > decoding *something* out of MPIDR. Sadly, the contents of that register are > mostly unusable due to the implementation leniancy and things like Aff0 > havi

RE: [PATCH] arm64: topology: Stop using MPIDR for topology information

2020-09-01 Thread Zengtao (B)
Hi Valentin: > -Original Message- > From: Valentin Schneider [mailto:valentin.schnei...@arm.com] > Sent: Saturday, August 29, 2020 9:00 PM > To: linux-kernel@vger.kernel.org; linux-arm-ker...@lists.infradead.org > Cc: Catalin Marinas; Will Deacon; Sudeep Holla; Robin Murphy; Jeremy > Linto