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| author | Ram Pai | 2018-03-27 11:09:26 +0200 |
|---|---|---|
| committer | Michael Ellerman | 2018-05-08 16:35:33 +0200 |
| commit | 5212213aa5a2359dd0474c9dab22b6220b591fe1 (patch) | |
| tree | 1ed1961959d7c999f27f6066f0d8e62f071233d5 /include/linux/mm.h | |
| parent | Linux v4.17-rc3 (diff) | |
| download | kernel-qcow2-linux-5212213aa5a2359dd0474c9dab22b6220b591fe1.tar.gz kernel-qcow2-linux-5212213aa5a2359dd0474c9dab22b6220b591fe1.tar.xz kernel-qcow2-linux-5212213aa5a2359dd0474c9dab22b6220b591fe1.zip | |
mm, powerpc, x86: define VM_PKEY_BITx bits if CONFIG_ARCH_HAS_PKEYS is enabled
VM_PKEY_BITx are defined only if CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS
is enabled. Powerpc also needs these bits. Hence lets define the
VM_PKEY_BITx bits for any architecture that enables
CONFIG_ARCH_HAS_PKEYS.
Reviewed-by: Dave Hansen <dave.hansen@intel.com>
Signed-off-by: Ram Pai <linuxram@us.ibm.com>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'include/linux/mm.h')
| -rw-r--r-- | include/linux/mm.h | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index 1ac1f06a4be6..c6a6f2492c1b 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -228,15 +228,16 @@ extern unsigned int kobjsize(const void *objp); #define VM_HIGH_ARCH_4 BIT(VM_HIGH_ARCH_BIT_4) #endif /* CONFIG_ARCH_USES_HIGH_VMA_FLAGS */ -#if defined(CONFIG_X86) -# define VM_PAT VM_ARCH_1 /* PAT reserves whole VMA at once (x86) */ -#if defined (CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS) +#ifdef CONFIG_ARCH_HAS_PKEYS # define VM_PKEY_SHIFT VM_HIGH_ARCH_BIT_0 # define VM_PKEY_BIT0 VM_HIGH_ARCH_0 /* A protection key is a 4-bit value */ # define VM_PKEY_BIT1 VM_HIGH_ARCH_1 # define VM_PKEY_BIT2 VM_HIGH_ARCH_2 # define VM_PKEY_BIT3 VM_HIGH_ARCH_3 -#endif +#endif /* CONFIG_ARCH_HAS_PKEYS */ + +#if defined(CONFIG_X86) +# define VM_PAT VM_ARCH_1 /* PAT reserves whole VMA at once (x86) */ #elif defined(CONFIG_PPC) # define VM_SAO VM_ARCH_1 /* Strong Access Ordering (powerpc) */ #elif defined(CONFIG_PARISC) |