Re: [PATCH v3 01/14] powerpc: Enable Prefixed Instructions

2020-03-03 Thread Alistair Popple
> But hmm, the dt_cpu_ftrs parsing should be picking those up and setting > them by default I would think (or maybe not because you don't expect > FSCR bit if OS support is not required). Right - the generic dt_cpu_ftrs didn't do the FSCR enablement which I assume is because if OS support is

Re: [PATCH v3 01/14] powerpc: Enable Prefixed Instructions

2020-02-27 Thread Nicholas Piggin
Jordan Niethe's on February 28, 2020 12:52 pm: > On Wed, Feb 26, 2020 at 5:50 PM Nicholas Piggin wrote: >> >> Jordan Niethe's on February 26, 2020 2:07 pm: >> > From: Alistair Popple >> > >> > Prefix instructions have their own FSCR bit which needs to enabled via >> > a CPU feature. The kernel

Re: [PATCH v3 01/14] powerpc: Enable Prefixed Instructions

2020-02-27 Thread Jordan Niethe
On Wed, Feb 26, 2020 at 5:50 PM Nicholas Piggin wrote: > > Jordan Niethe's on February 26, 2020 2:07 pm: > > From: Alistair Popple > > > > Prefix instructions have their own FSCR bit which needs to enabled via > > a CPU feature. The kernel will save the FSCR for problem state but it > > needs to

Re: [PATCH v3 01/14] powerpc: Enable Prefixed Instructions

2020-02-25 Thread Nicholas Piggin
Jordan Niethe's on February 26, 2020 2:07 pm: > From: Alistair Popple > > Prefix instructions have their own FSCR bit which needs to enabled via > a CPU feature. The kernel will save the FSCR for problem state but it > needs to be enabled initially. > > Signed-off-by: Alistair Popple > --- >

[PATCH v3 01/14] powerpc: Enable Prefixed Instructions

2020-02-25 Thread Jordan Niethe
From: Alistair Popple Prefix instructions have their own FSCR bit which needs to enabled via a CPU feature. The kernel will save the FSCR for problem state but it needs to be enabled initially. Signed-off-by: Alistair Popple --- arch/powerpc/include/asm/reg.h| 3 +++