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powerpc/book3s64/pkeys: Make initial_allocation_mask static

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initial_allocation_mask is not used outside this file.
Also mark reserved_allocation_mask and initial_allocation_mask __ro_after_init;

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/20200709032946.881753-12-aneesh.kumar@linux.ibm.com
This commit is contained in:
Aneesh Kumar K.V 2020-07-09 08:59:34 +05:30 committed by Michael Ellerman
parent c529afd7cb
commit 3c8ab47362
2 changed files with 5 additions and 3 deletions
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1
arch/powerpc/include/asm/pkeys.h
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@ -13,7 +13,6 @@
DECLARE_STATIC_KEY_FALSE(pkey_disabled);
extern int num_pkey;
extern u32 initial_allocation_mask; /* bits set for the initially allocated keys */
extern u32 reserved_allocation_mask; /* bits set for reserved keys */
#define ARCH_VM_PKEY_FLAGS (VM_PKEY_BIT0 | VM_PKEY_BIT1 | VM_PKEY_BIT2 | \

7
arch/powerpc/mm/book3s64/pkeys.c
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@ -14,11 +14,14 @@
DEFINE_STATIC_KEY_FALSE(pkey_disabled);
int num_pkey; /* Max number of pkeys supported */
u32 initial_allocation_mask; /* Bits set for the initially allocated keys */
/*
* Keys marked in the reservation list cannot be allocated by userspace
*/
u32 reserved_allocation_mask;
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