[PATCH] powerpc/mm: Fix thread_pkey_regs_init()
Ram Pai
linuxram at us.ibm.com
Tue Mar 27 13:36:54 AEDT 2018
thread_pkey_regs_init() initializes the pkey related registers
instead of initializing the fields in the task structures. Fortunately
those key related registers are re-set to zero when the task
gets scheduled on the cpu. However its good to fix this glaringly
visible error.
cc: Michael Ellermen <mpe at ellerman.id.au>
Signed-off-by: Ram Pai <linuxram at us.ibm.com>
Signed-off-by: Thiago Jung Bauermann <bauerman at linux.vnet.ibm.com>
---
arch/powerpc/mm/pkeys.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/powerpc/mm/pkeys.c b/arch/powerpc/mm/pkeys.c
index 58bbb55..61dba4e 100644
--- a/arch/powerpc/mm/pkeys.c
+++ b/arch/powerpc/mm/pkeys.c
@@ -338,9 +338,9 @@ void thread_pkey_regs_init(struct thread_struct *thread)
if (static_branch_likely(&pkey_disabled))
return;
- write_amr(read_amr() & pkey_amr_uamor_mask);
- write_iamr(read_iamr() & pkey_iamr_mask);
- write_uamor(read_uamor() & pkey_amr_uamor_mask);
+ thread->amr = read_amr() & pkey_amr_uamor_mask;
+ thread->iamr = read_iamr() & pkey_iamr_mask;
+ thread->uamor = read_uamor() & pkey_amr_uamor_mask;
}
static inline bool pkey_allows_readwrite(int pkey)
--
1.8.3.1
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