Re: [PATCH v5 2/7] powerpc: Use TIDR CPU feature to control TIDR allocation
From: Frederic Barrat <hidden>
Date: 2018-05-11 08:46:47
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Le 11/05/2018 à 08:12, Alastair D'Silva a écrit :
From: Alastair D'Silva <redacted> 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 <redacted> ---
Reviewed-by: Frederic Barrat <redacted>
quoted hunk ↗ jump to hunk
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)