diff options
| author | Ram Pai <linuxram@us.ibm.com> | 2018-03-26 19:36:54 -0700 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-03-31 00:10:33 +1100 |
| commit | f208638680e5cb4eb0d2871ce8c29a6cfbe44dce (patch) | |
| tree | 3f5281fb5197bf3f3b2209a7659dd914e1a7579a /arch/powerpc/mm/pkeys.c | |
| parent | e6e133c47e6bd4d5dac05b35d06634a8e5648615 (diff) | |
powerpc/mm: Fix thread_pkey_regs_init()
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.
Fixes: 06bb53b33804 ("powerpc: store and restore the pkey state across context switches")
Signed-off-by: Ram Pai <linuxram@us.ibm.com>
Signed-off-by: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Acked-by: Balbir Singh <bsingharora@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/mm/pkeys.c')
| -rw-r--r-- | arch/powerpc/mm/pkeys.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/powerpc/mm/pkeys.c b/arch/powerpc/mm/pkeys.c index ba71c5481f42..328737b4d73c 100644 --- a/arch/powerpc/mm/pkeys.c +++ b/arch/powerpc/mm/pkeys.c @@ -308,9 +308,9 @@ 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) |