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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2018-08-23 14:23:08 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-08-23 14:23:08 -0700 |
| commit | 0c4b0f815f20304156f66d47d0c2a6e148f6ffaa (patch) | |
| tree | 06c62ea33b1ae6be9d4e34b1301a95407329c038 /arch/mips/lib/multi3.c | |
| parent | 2ab054fd1f88d7d22e6df7c34c41a2f9782c3f08 (diff) | |
| parent | 690d9163bf4b8563a2682e619f938e6a0443947f (diff) | |
| download | linux-0c4b0f815f20304156f66d47d0c2a6e148f6ffaa.tar.gz linux-0c4b0f815f20304156f66d47d0c2a6e148f6ffaa.tar.bz2 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/lib/multi3.c')
| -rw-r--r-- | arch/mips/lib/multi3.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/mips/lib/multi3.c b/arch/mips/lib/multi3.c index 111ad475aa0c..4c2483f410c2 100644 --- a/arch/mips/lib/multi3.c +++ b/arch/mips/lib/multi3.c @@ -4,12 +4,12 @@ #include "libgcc.h" /* - * GCC 7 suboptimally generates __multi3 calls for mips64r6, so for that - * specific case only we'll implement it here. + * GCC 7 & older can suboptimally generate __multi3 calls for mips64r6, so for + * that specific case only we implement that intrinsic here. * * See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82981 */ -#if defined(CONFIG_64BIT) && defined(CONFIG_CPU_MIPSR6) && (__GNUC__ == 7) +#if defined(CONFIG_64BIT) && defined(CONFIG_CPU_MIPSR6) && (__GNUC__ < 8) /* multiply 64-bit values, low 64-bits returned */ static inline long long notrace dmulu(long long a, long long b) |