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SubjectRe: [PATCH v5 2/7] powerpc: Use TIDR CPU feature to control TIDR allocation
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Le 11/05/2018 à 08:12, Alastair D'Silva a écrit :
> From: Alastair D'Silva <alastair@d-silva.org>
>
> Switch the use of TIDR on it's CPU feature, rather than assuming it
> is available based on architecture.
>
> Signed-off-by: Alastair D'Silva <alastair@d-silva.org>
> ---

Reviewed-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com>


> arch/powerpc/kernel/process.c | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
> index 1237f13fed51..3b00da47699b 100644
> --- a/arch/powerpc/kernel/process.c
> +++ b/arch/powerpc/kernel/process.c
> @@ -1154,7 +1154,7 @@ static inline void restore_sprs(struct thread_struct *old_thread,
> mtspr(SPRN_TAR, new_thread->tar);
> }
>
> - if (cpu_has_feature(CPU_FTR_ARCH_300) &&
> + if (cpu_has_feature(CPU_FTR_P9_TIDR) &&
> old_thread->tidr != new_thread->tidr)
> mtspr(SPRN_TIDR, new_thread->tidr);
> #endif
> @@ -1570,7 +1570,7 @@ void clear_thread_tidr(struct task_struct *t)
> if (!t->thread.tidr)
> return;
>
> - if (!cpu_has_feature(CPU_FTR_ARCH_300)) {
> + if (!cpu_has_feature(CPU_FTR_P9_TIDR)) {
> WARN_ON_ONCE(1);
> return;
> }
> @@ -1593,7 +1593,7 @@ int set_thread_tidr(struct task_struct *t)
> {
> int rc;
>
> - if (!cpu_has_feature(CPU_FTR_ARCH_300))
> + if (!cpu_has_feature(CPU_FTR_P9_TIDR))
> return -EINVAL;
>
> if (t != current)
>

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