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| author | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2018-03-10 17:59:29 +0300 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2018-03-19 21:14:26 +0300 |
| commit | 350e1dad0dd8c55750f9d4fa6b19cea1a0037ace (patch) | |
| tree | cf2cc242fc4f9642edc819e553300ac47c9b5865 /arch/arm64 | |
| parent | bd99f9a159b072be743c6681f81e06b9ebd370a4 (diff) | |
| download | linux-350e1dad0dd8c55750f9d4fa6b19cea1a0037ace.tar.xz | |
arm64: asm: drop special versions of adr_l/ldr_l/str_l for modules
Now that we started keeping modules within 4 GB of the core kernel
in all cases, we no longer need to special case the adr_l/ldr_l/str_l
macros for modules to deal with them being loaded farther away.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64')
| -rw-r--r-- | arch/arm64/include/asm/assembler.h | 34 |
1 files changed, 2 insertions, 32 deletions
diff --git a/arch/arm64/include/asm/assembler.h b/arch/arm64/include/asm/assembler.h index 3c78835bba94..053d83e8db6f 100644 --- a/arch/arm64/include/asm/assembler.h +++ b/arch/arm64/include/asm/assembler.h @@ -202,25 +202,15 @@ lr .req x30 // link register /* * Pseudo-ops for PC-relative adr/ldr/str <reg>, <symbol> where - * <symbol> is within the range +/- 4 GB of the PC when running - * in core kernel context. In module context, a movz/movk sequence - * is used, since modules may be loaded far away from the kernel - * when KASLR is in effect. + * <symbol> is within the range +/- 4 GB of the PC. */ /* * @dst: destination register (64 bit wide) * @sym: name of the symbol */ .macro adr_l, dst, sym -#ifndef MODULE adrp \dst, \sym add \dst, \dst, :lo12:\sym -#else - movz \dst, #:abs_g3:\sym - movk \dst, #:abs_g2_nc:\sym - movk \dst, #:abs_g1_nc:\sym - movk \dst, #:abs_g0_nc:\sym -#endif .endm /* @@ -231,7 +221,6 @@ lr .req x30 // link register * the address */ .macro ldr_l, dst, sym, tmp= -#ifndef MODULE .ifb \tmp adrp \dst, \sym ldr \dst, [\dst, :lo12:\sym] @@ -239,15 +228,6 @@ lr .req x30 // link register adrp \tmp, \sym ldr \dst, [\tmp, :lo12:\sym] .endif -#else - .ifb \tmp - adr_l \dst, \sym - ldr \dst, [\dst] - .else - adr_l \tmp, \sym - ldr \dst, [\tmp] - .endif -#endif .endm /* @@ -257,28 +237,18 @@ lr .req x30 // link register * while <src> needs to be preserved. */ .macro str_l, src, sym, tmp -#ifndef MODULE adrp \tmp, \sym str \src, [\tmp, :lo12:\sym] -#else - adr_l \tmp, \sym - str \src, [\tmp] -#endif .endm /* - * @dst: Result of per_cpu(sym, smp_processor_id()), can be SP for - * non-module code + * @dst: Result of per_cpu(sym, smp_processor_id()) (can be SP) * @sym: The name of the per-cpu variable * @tmp: scratch register */ .macro adr_this_cpu, dst, sym, tmp -#ifndef MODULE adrp \tmp, \sym add \dst, \tmp, #:lo12:\sym -#else - adr_l \dst, \sym -#endif alternative_if_not ARM64_HAS_VIRT_HOST_EXTN mrs \tmp, tpidr_el1 alternative_else |