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| author | Will Deacon <will.deacon@arm.com> | 2018-12-10 14:15:15 +0000 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2018-12-10 18:42:18 +0000 |
| commit | 68d23da4373aba76f5300017c4746440f276698e (patch) | |
| tree | 138b93b628cf77727970417690693f18eddf7c40 /arch/arm64/include/asm/mmu_context.h | |
| parent | b9567720a1b8e739380e0241413606c056c57859 (diff) | |
| download | lwn-68d23da4373aba76f5300017c4746440f276698e.tar.gz lwn-68d23da4373aba76f5300017c4746440f276698e.zip | |
arm64: Kconfig: Re-jig CONFIG options for 52-bit VA
Enabling 52-bit VAs for userspace is pretty confusing, since it requires
you to select "48-bit" virtual addressing in the Kconfig.
Rework the logic so that 52-bit user virtual addressing is advertised in
the "Virtual address space size" choice, along with some help text to
describe its interaction with Pointer Authentication. The EXPERT-only
option to force all user mappings to the 52-bit range is then made
available immediately below the VA size selection.
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64/include/asm/mmu_context.h')
| -rw-r--r-- | arch/arm64/include/asm/mmu_context.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm64/include/asm/mmu_context.h b/arch/arm64/include/asm/mmu_context.h index b0768502fa08..2da3e478fd8f 100644 --- a/arch/arm64/include/asm/mmu_context.h +++ b/arch/arm64/include/asm/mmu_context.h @@ -74,7 +74,7 @@ extern u64 idmap_ptrs_per_pgd; static inline bool __cpu_uses_extended_idmap(void) { - if (IS_ENABLED(CONFIG_ARM64_52BIT_VA)) + if (IS_ENABLED(CONFIG_ARM64_USER_VA_BITS_52)) return false; return unlikely(idmap_t0sz != TCR_T0SZ(VA_BITS)); |