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| author | Leonidas Da Silva Barbosa <leosilva@linux.vnet.ibm.com> | 2015-07-13 13:51:01 -0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-09-29 19:26:05 +0200 |
| commit | b40924367be91f86c882a6a023a50fbfd7f9c430 (patch) | |
| tree | 5e85814ce7670b4b93ebca567b7ed96e4dbed2d7 | |
| parent | ce813f1fef5077fb318c0802aa0be148a580e632 (diff) | |
| download | lwn-b40924367be91f86c882a6a023a50fbfd7f9c430.tar.gz lwn-b40924367be91f86c882a6a023a50fbfd7f9c430.zip | |
powerpc: Uncomment and make enable_kernel_vsx() routine available
commit 72cd7b44bc99376b3f3c93cedcd052663fcdf705 upstream.
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 <leosilva@linux.vnet.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | arch/powerpc/include/asm/switch_to.h | 1 | ||||
| -rw-r--r-- | arch/powerpc/kernel/process.c | 3 |
2 files changed, 1 insertions, 3 deletions
diff --git a/arch/powerpc/include/asm/switch_to.h b/arch/powerpc/include/asm/switch_to.h index 58abeda64cb7..15cca17cba4b 100644 --- a/arch/powerpc/include/asm/switch_to.h +++ b/arch/powerpc/include/asm/switch_to.h @@ -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 *); diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index febb50dd5328..0596373cd1c3 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -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) { |