diff options
| author | Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> | 2020-07-09 08:59:38 +0530 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-07-20 22:57:59 +1000 |
| commit | 2daf298de728dc37f32d0749fa4f59db36fa7d96 (patch) | |
| tree | bfbad7864943595b4b33b6f7227ba006483aea08 /arch/powerpc/mm | |
| parent | e10cc8715d180509a367d3ab25d40e4a1612cb2f (diff) | |
powerpc/book3s64/pkeys: Use pkey_execute_disable_supported
Use pkey_execute_disable_supported to check for execute key support instead
of pkey_disabled.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200709032946.881753-16-aneesh.kumar@linux.ibm.com
Diffstat (limited to 'arch/powerpc/mm')
| -rw-r--r-- | arch/powerpc/mm/book3s64/pkeys.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/powerpc/mm/book3s64/pkeys.c b/arch/powerpc/mm/book3s64/pkeys.c index 028b17c2c511..9969bc82e2ce 100644 --- a/arch/powerpc/mm/book3s64/pkeys.c +++ b/arch/powerpc/mm/book3s64/pkeys.c @@ -23,7 +23,6 @@ u32 reserved_allocation_mask __ro_after_init; /* Bits set for the initially allocated keys */ static u32 initial_allocation_mask __ro_after_init; -static bool pkey_execute_disable_supported; /* * Even if we allocate keys with sys_pkey_alloc(), we need to make sure * other thread still find the access denied using the same keys. @@ -38,6 +37,7 @@ static u64 default_uamor = ~0x0UL; * We pick key 2 because 0 is special key and 1 is reserved as per ISA. */ static int execute_only_key = 2; +static bool pkey_execute_disable_supported; #define AMR_BITS_PER_PKEY 2 @@ -151,7 +151,7 @@ void __init pkey_early_init_devtree(void) num_pkey = pkeys_total; #endif - if (unlikely(num_pkey <= execute_only_key)) { + if (unlikely(num_pkey <= execute_only_key) || !pkey_execute_disable_supported) { /* * Insufficient number of keys to support * execute only key. Mark it unavailable. @@ -359,7 +359,7 @@ void thread_pkey_regs_init(struct thread_struct *thread) write_uamor(default_uamor); } -int __execute_only_pkey(struct mm_struct *mm) +int execute_only_pkey(struct mm_struct *mm) { return mm->context.execute_only_pkey; } |