Commit b9658f83 authored by Aneesh Kumar K.V's avatar Aneesh Kumar K.V Committed by Michael Ellerman

powerpc/book3s64/pkeys: pkeys are supported only on hash on book3s.

Signed-off-by: default avatarAneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200709032946.881753-4-aneesh.kumar@linux.ibm.com
parent 33699023
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_POWERPC_BOOK3S_64_HASH_PKEY_H
#define _ASM_POWERPC_BOOK3S_64_HASH_PKEY_H
static inline u64 hash__vmflag_to_pte_pkey_bits(u64 vm_flags)
{
return (((vm_flags & VM_PKEY_BIT0) ? H_PTE_PKEY_BIT0 : 0x0UL) |
((vm_flags & VM_PKEY_BIT1) ? H_PTE_PKEY_BIT1 : 0x0UL) |
((vm_flags & VM_PKEY_BIT2) ? H_PTE_PKEY_BIT2 : 0x0UL) |
((vm_flags & VM_PKEY_BIT3) ? H_PTE_PKEY_BIT3 : 0x0UL) |
((vm_flags & VM_PKEY_BIT4) ? H_PTE_PKEY_BIT4 : 0x0UL));
}
static inline u64 pte_to_hpte_pkey_bits(u64 pteflags)
{
return (((pteflags & H_PTE_PKEY_BIT4) ? HPTE_R_KEY_BIT4 : 0x0UL) |
((pteflags & H_PTE_PKEY_BIT3) ? HPTE_R_KEY_BIT3 : 0x0UL) |
((pteflags & H_PTE_PKEY_BIT2) ? HPTE_R_KEY_BIT2 : 0x0UL) |
((pteflags & H_PTE_PKEY_BIT1) ? HPTE_R_KEY_BIT1 : 0x0UL) |
((pteflags & H_PTE_PKEY_BIT0) ? HPTE_R_KEY_BIT0 : 0x0UL));
}
static inline u16 hash__pte_to_pkey_bits(u64 pteflags)
{
return (((pteflags & H_PTE_PKEY_BIT4) ? 0x10 : 0x0UL) |
((pteflags & H_PTE_PKEY_BIT3) ? 0x8 : 0x0UL) |
((pteflags & H_PTE_PKEY_BIT2) ? 0x4 : 0x0UL) |
((pteflags & H_PTE_PKEY_BIT1) ? 0x2 : 0x0UL) |
((pteflags & H_PTE_PKEY_BIT0) ? 0x1 : 0x0UL));
}
#endif
/* SPDX-License-Identifier: GPL-2.0+ */
#ifndef _ASM_POWERPC_BOOK3S_64_PKEYS_H
#define _ASM_POWERPC_BOOK3S_64_PKEYS_H
#include <asm/book3s/64/hash-pkey.h>
static inline u64 vmflag_to_pte_pkey_bits(u64 vm_flags)
{
if (static_branch_likely(&pkey_disabled))
return 0x0UL;
if (radix_enabled())
BUG();
return hash__vmflag_to_pte_pkey_bits(vm_flags);
}
static inline u16 pte_to_pkey_bits(u64 pteflags)
{
if (radix_enabled())
BUG();
return hash__pte_to_pkey_bits(pteflags);
}
#endif /*_ASM_POWERPC_KEYS_H */
...@@ -25,23 +25,18 @@ extern u32 reserved_allocation_mask; /* bits set for reserved keys */ ...@@ -25,23 +25,18 @@ extern u32 reserved_allocation_mask; /* bits set for reserved keys */
PKEY_DISABLE_WRITE | \ PKEY_DISABLE_WRITE | \
PKEY_DISABLE_EXECUTE) PKEY_DISABLE_EXECUTE)
#ifdef CONFIG_PPC_BOOK3S_64
#include <asm/book3s/64/pkeys.h>
#else
#error "Not supported"
#endif
static inline u64 pkey_to_vmflag_bits(u16 pkey) static inline u64 pkey_to_vmflag_bits(u16 pkey)
{ {
return (((u64)pkey << VM_PKEY_SHIFT) & ARCH_VM_PKEY_FLAGS); return (((u64)pkey << VM_PKEY_SHIFT) & ARCH_VM_PKEY_FLAGS);
} }
static inline u64 vmflag_to_pte_pkey_bits(u64 vm_flags)
{
if (static_branch_likely(&pkey_disabled))
return 0x0UL;
return (((vm_flags & VM_PKEY_BIT0) ? H_PTE_PKEY_BIT0 : 0x0UL) |
((vm_flags & VM_PKEY_BIT1) ? H_PTE_PKEY_BIT1 : 0x0UL) |
((vm_flags & VM_PKEY_BIT2) ? H_PTE_PKEY_BIT2 : 0x0UL) |
((vm_flags & VM_PKEY_BIT3) ? H_PTE_PKEY_BIT3 : 0x0UL) |
((vm_flags & VM_PKEY_BIT4) ? H_PTE_PKEY_BIT4 : 0x0UL));
}
static inline int vma_pkey(struct vm_area_struct *vma) static inline int vma_pkey(struct vm_area_struct *vma)
{ {
if (static_branch_likely(&pkey_disabled)) if (static_branch_likely(&pkey_disabled))
...@@ -51,24 +46,6 @@ static inline int vma_pkey(struct vm_area_struct *vma) ...@@ -51,24 +46,6 @@ static inline int vma_pkey(struct vm_area_struct *vma)
#define arch_max_pkey() pkeys_total #define arch_max_pkey() pkeys_total
static inline u64 pte_to_hpte_pkey_bits(u64 pteflags)
{
return (((pteflags & H_PTE_PKEY_BIT4) ? HPTE_R_KEY_BIT4 : 0x0UL) |
((pteflags & H_PTE_PKEY_BIT3) ? HPTE_R_KEY_BIT3 : 0x0UL) |
((pteflags & H_PTE_PKEY_BIT2) ? HPTE_R_KEY_BIT2 : 0x0UL) |
((pteflags & H_PTE_PKEY_BIT1) ? HPTE_R_KEY_BIT1 : 0x0UL) |
((pteflags & H_PTE_PKEY_BIT0) ? HPTE_R_KEY_BIT0 : 0x0UL));
}
static inline u16 pte_to_pkey_bits(u64 pteflags)
{
return (((pteflags & H_PTE_PKEY_BIT4) ? 0x10 : 0x0UL) |
((pteflags & H_PTE_PKEY_BIT3) ? 0x8 : 0x0UL) |
((pteflags & H_PTE_PKEY_BIT2) ? 0x4 : 0x0UL) |
((pteflags & H_PTE_PKEY_BIT1) ? 0x2 : 0x0UL) |
((pteflags & H_PTE_PKEY_BIT0) ? 0x1 : 0x0UL));
}
#define pkey_alloc_mask(pkey) (0x1 << pkey) #define pkey_alloc_mask(pkey) (0x1 << pkey)
#define mm_pkey_allocation_map(mm) (mm->context.pkey_allocation_map) #define mm_pkey_allocation_map(mm) (mm->context.pkey_allocation_map)
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment