diff options
Diffstat (limited to 'arch/riscv/kernel')
| -rw-r--r-- | arch/riscv/kernel/entry.S | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/riscv/kernel/entry.S b/arch/riscv/kernel/entry.S index e7bd03a9ced5..d9095b5718d1 100644 --- a/arch/riscv/kernel/entry.S +++ b/arch/riscv/kernel/entry.S @@ -75,8 +75,11 @@ /* Atomically reset the current cpu bit in new_vmalloc */ amoxor.d a0, a1, (a0) - /* Only emit a sfence.vma if the uarch caches invalid entries */ - ALTERNATIVE("sfence.vma", "nop", 0, RISCV_ISA_EXT_SVVPTC, 1) + /* + * A sfence.vma is required here. Even if we had Svvptc, there's no + * guarantee that after returning we wouldn't just fault again. + */ + sfence.vma REG_L a0, TASK_TI_A0(tp) REG_L a1, TASK_TI_A1(tp) |