Uncomment and make enable_kernel_vsx() routine available

PATCH In review Leonidas S. Barbosa 1 participant 1 message Jul 13, 2015

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PowerPC Crypto API

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Leonidas S. Barbosa

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2015-07-13 16:51 UTC #0 lore raw

PATCH 1/2 Uncomment and make enable_kernel_vsx() routine available

enable_kernel_vsx() function was commented since anything was using it. However, vmx-crypto driver uses VSX instructions which are only available if VSX is enable. Otherwise it rises an exception oops.

This patch uncomment enable_kernel_vsx() routine and makes it available.

Signed-off-by Leonidas S. Barbosa <[email protected]>

---
 arch/powerpc/include/asm/switch_to.h | 1 +
 arch/powerpc/kernel/process.c        | 3 ---
 2 files changed, 1 insertion(+), 3 deletions(-)

arch/powerpc/include/asm/switch_to.h +1 -0

index 58abeda..15cca17 100644
@@ -29,6 +29,7 @@ static inline void save_early_sprs(struct thread_struct *prev) {}
 
 extern void enable_kernel_fp(void);
 extern void enable_kernel_altivec(void);
+extern void enable_kernel_vsx(void);
 extern int emulate_altivec(struct pt_regs *);
 extern void __giveup_vsx(struct task_struct *);
 extern void giveup_vsx(struct task_struct *);

arch/powerpc/kernel/process.c +0 -3

index 8005e18..64e6e9d 100644
@@ -204,8 +204,6 @@ EXPORT_SYMBOL_GPL(flush_altivec_to_thread);
 #endif /* CONFIG_ALTIVEC */
 
 #ifdef CONFIG_VSX
-#if 0
-/* not currently used, but some crazy RAID module might want to later */
 void enable_kernel_vsx(void)
 {
 	WARN_ON(preemptible());

@@ -220,7 +218,6 @@ void enable_kernel_vsx(void)
 #endif /* CONFIG_SMP */
 }
 EXPORT_SYMBOL(enable_kernel_vsx);
-#endif
 
 void giveup_vsx(struct task_struct *tsk)
 {

Signature · 1 line

2.1.0