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| author | Palmer Dabbelt <palmerdabbelt@google.com> | 2020-05-21 13:28:26 -0700 |
|---|---|---|
| committer | Palmer Dabbelt <palmerdabbelt@google.com> | 2020-05-21 13:28:26 -0700 |
| commit | 8356c379cfba8b1b90b0a2423f6afbbe2cdc5d91 (patch) | |
| tree | 5e9c8d5dadda3f09cc9803b86a6f24dd98218459 /arch | |
| parent | 8fa3cdff05f009855a6a99a7d77a41004009bbab (diff) | |
RISC-V: gp_in_global needs register keyword
The Intel kernel build robot recently pointed out that I missed the
register keyword on this one when I refactored the code to remove local
register variables (which aren't supported by LLVM). GCC's manual
indicates that global register variables must have the register keyword,
As far as I can tell lacking the register keyword causes GCC to ignore
the __asm__ and treat this as a regular variable, but I'm not sure how
that didn't show up as some sort of failure.
Fixes: 52e7c52d2ded ("RISC-V: Stop relying on GCC's register allocator's hueristics")
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/riscv/kernel/process.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/riscv/kernel/process.c b/arch/riscv/kernel/process.c index 610c11e91606..824d117cf202 100644 --- a/arch/riscv/kernel/process.c +++ b/arch/riscv/kernel/process.c @@ -22,7 +22,7 @@ #include <asm/switch_to.h> #include <asm/thread_info.h> -unsigned long gp_in_global __asm__("gp"); +register unsigned long gp_in_global __asm__("gp"); extern asmlinkage void ret_from_fork(void); extern asmlinkage void ret_from_kernel_thread(void); |