diff options
| author | Pavel Tatashin <pasha.tatashin@soleen.com> | 2019-11-20 20:07:40 +0300 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2019-11-20 21:51:54 +0300 |
| commit | e50be648aaa3da196d4f4ed49d1c5d4ec105fa4a (patch) | |
| tree | 9c173b83fa66c80fb84c5dfa4738e39372011fb7 /arch/arm64/include/asm/asm-uaccess.h | |
| parent | 94bb804e1e6f0a9a77acf20d7c70ea141c6c821e (diff) | |
| download | linux-e50be648aaa3da196d4f4ed49d1c5d4ec105fa4a.tar.xz | |
arm64: uaccess: Remove uaccess_*_not_uao asm macros
It is safer and simpler to drop the uaccess assembly macros in favour of
inline C functions. Although this bloats the Image size slightly, it
aligns our user copy routines with '{get,put}_user()' and generally
makes the code a lot easier to reason about.
Cc: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Pavel Tatashin <pasha.tatashin@soleen.com>
[will: tweaked commit message and changed temporary variable names]
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'arch/arm64/include/asm/asm-uaccess.h')
| -rw-r--r-- | arch/arm64/include/asm/asm-uaccess.h | 17 |
1 files changed, 0 insertions, 17 deletions
diff --git a/arch/arm64/include/asm/asm-uaccess.h b/arch/arm64/include/asm/asm-uaccess.h index 5bf963830b17..c764cc8fb3b6 100644 --- a/arch/arm64/include/asm/asm-uaccess.h +++ b/arch/arm64/include/asm/asm-uaccess.h @@ -59,23 +59,6 @@ alternative_else_nop_endif #endif /* - * These macros are no-ops when UAO is present. - */ - .macro uaccess_disable_not_uao, tmp1, tmp2 - uaccess_ttbr0_disable \tmp1, \tmp2 -alternative_if ARM64_ALT_PAN_NOT_UAO - SET_PSTATE_PAN(1) -alternative_else_nop_endif - .endm - - .macro uaccess_enable_not_uao, tmp1, tmp2, tmp3 - uaccess_ttbr0_enable \tmp1, \tmp2, \tmp3 -alternative_if ARM64_ALT_PAN_NOT_UAO - SET_PSTATE_PAN(0) -alternative_else_nop_endif - .endm - -/* * Remove the address tag from a virtual address, if present. */ .macro untagged_addr, dst, addr |