diff options
| 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/assembler.h | |
| parent | b9567720a1b8e739380e0241413606c056c57859 (diff) | |
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/assembler.h')
| -rw-r--r-- | arch/arm64/include/asm/assembler.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/arm64/include/asm/assembler.h b/arch/arm64/include/asm/assembler.h index 122d91d4097a..ce985f13dce5 100644 --- a/arch/arm64/include/asm/assembler.h +++ b/arch/arm64/include/asm/assembler.h @@ -549,7 +549,7 @@ USER(\label, ic ivau, \tmp2) // invalidate I line PoU * ttbr: Value of ttbr to set, modified. */ .macro offset_ttbr1, ttbr -#ifdef CONFIG_ARM64_52BIT_VA +#ifdef CONFIG_ARM64_USER_VA_BITS_52 orr \ttbr, \ttbr, #TTBR1_BADDR_4852_OFFSET #endif .endm @@ -560,7 +560,7 @@ USER(\label, ic ivau, \tmp2) // invalidate I line PoU * to be nop'ed out when dealing with 52-bit kernel VAs. */ .macro restore_ttbr1, ttbr -#ifdef CONFIG_ARM64_52BIT_VA +#ifdef CONFIG_ARM64_USER_VA_BITS_52 bic \ttbr, \ttbr, #TTBR1_BADDR_4852_OFFSET #endif .endm |