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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2018-08-23 23:23:08 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-08-23 23:23:08 +0200 |
| commit | 0c4b0f815f20304156f66d47d0c2a6e148f6ffaa (patch) | |
| tree | 06c62ea33b1ae6be9d4e34b1301a95407329c038 /arch/mips/include/asm/atomic.h | |
| parent | Merge tag 'for-linus' of git://github.com/openrisc/linux (diff) | |
| parent | MIPS: lib: Provide MIPS64r6 __multi3() for GCC < 7 (diff) | |
| download | linux-0c4b0f815f20304156f66d47d0c2a6e148f6ffaa.tar.xz linux-0c4b0f815f20304156f66d47d0c2a6e148f6ffaa.zip | |
Merge tag 'mips_4.19_2' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux
Pull MIPS fixes from Paul Burton:
- Fix microMIPS build failures by adding a .insn directive to the
barrier_before_unreachable() asm statement in order to convince the
toolchain that the asm statement is a valid branch target rather
than a bogus attempt to switch ISA.
- Clean up our declarations of TLB functions that we overwrite with
generated code in order to prevent the compiler making assumptions
about alignment that cause microMIPS kernels built with GCC 7 &
above to die early during boot.
- Fix up a regression for MIPS32 kernels which slipped into the main
MIPS pull for 4.19, causing CONFIG_32BIT=y kernels to contain
inappropriate MIPS64 instructions.
- Extend our existing workaround for MIPSr6 builds that end up using
the __multi3 intrinsic to GCC 7 & below, rather than just GCC 7.
* tag 'mips_4.19_2' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
MIPS: lib: Provide MIPS64r6 __multi3() for GCC < 7
MIPS: Workaround GCC __builtin_unreachable reordering bug
compiler.h: Allow arch-specific asm/compiler.h
MIPS: Avoid move psuedo-instruction whilst using MIPS_ISA_LEVEL
MIPS: Consistently declare TLB functions
MIPS: Export tlbmiss_handler_setup_pgd near its definition
Diffstat (limited to 'arch/mips/include/asm/atomic.h')
| -rw-r--r-- | arch/mips/include/asm/atomic.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/mips/include/asm/atomic.h b/arch/mips/include/asm/atomic.h index 0269b3de8b51..d4ea7a5b60cf 100644 --- a/arch/mips/include/asm/atomic.h +++ b/arch/mips/include/asm/atomic.h @@ -122,8 +122,8 @@ static __inline__ int atomic_fetch_##op##_relaxed(int i, atomic_t * v) \ " " #asm_op " %0, %1, %3 \n" \ " sc %0, %2 \n" \ "\t" __scbeqz " %0, 1b \n" \ - " move %0, %1 \n" \ " .set mips0 \n" \ + " move %0, %1 \n" \ : "=&r" (result), "=&r" (temp), \ "+" GCC_OFF_SMALL_ASM() (v->counter) \ : "Ir" (i)); \ @@ -190,9 +190,11 @@ static __inline__ int atomic_sub_if_positive(int i, atomic_t * v) __asm__ __volatile__( " .set "MIPS_ISA_LEVEL" \n" "1: ll %1, %2 # atomic_sub_if_positive\n" + " .set mips0 \n" " subu %0, %1, %3 \n" " move %1, %0 \n" " bltz %0, 1f \n" + " .set "MIPS_ISA_LEVEL" \n" " sc %1, %2 \n" "\t" __scbeqz " %1, 1b \n" "1: \n" |