This is a note to let you know that I've just added the patch titled
powerpc: Uncomment and make enable_kernel_vsx() routine available
to the 4.2-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
powerpc-uncomment-and-make-enable_kernel_vsx-routine-available.patch
and it can be found in the queue-4.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 72cd7b44bc99376b3f3c93cedcd052663fcdf705 Mon Sep 17 00:00:00 2001
From: Leonidas Da Silva Barbosa <leosilva@xxxxxxxxxxxxxxxxxx>
Date: Mon, 13 Jul 2015 13:51:01 -0300
Subject: powerpc: Uncomment and make enable_kernel_vsx() routine available
From: Leonidas Da Silva Barbosa <leosilva@xxxxxxxxxxxxxxxxxx>
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@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/powerpc/include/asm/switch_to.h | 1 +
arch/powerpc/kernel/process.c | 3 ---
2 files changed, 1 insertion(+), 3 deletions(-)
--- 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(struc
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 *);
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -204,8 +204,6 @@ EXPORT_SYMBOL_GPL(flush_altivec_to_threa
#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)
{
Patches currently in stable-queue which might be from leosilva@xxxxxxxxxxxxxxxxxx are
queue-4.2/powerpc-uncomment-and-make-enable_kernel_vsx-routine-available.patch
queue-4.2/crypto-vmx-adding-enable_kernel_vsx-to-access-vsx-instructions.patch
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