diff options
Diffstat (limited to 'arch/arm64/include/asm/assembler.h')
| -rw-r--r-- | arch/arm64/include/asm/assembler.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/assembler.h b/arch/arm64/include/asm/assembler.h index bf125c591116..8cded93f99c3 100644 --- a/arch/arm64/include/asm/assembler.h +++ b/arch/arm64/include/asm/assembler.h @@ -676,6 +676,23 @@ USER(\label, ic ivau, \tmp2) // invalidate I line PoU .endm /* + * Set SCTLR_EL1 to the passed value, and invalidate the local icache + * in the process. This is called when setting the MMU on. + */ +.macro set_sctlr_el1, reg + msr sctlr_el1, \reg + isb + /* + * Invalidate the local I-cache so that any instructions fetched + * speculatively from the PoC are discarded, since they may have + * been dynamically patched at the PoU. + */ + ic iallu + dsb nsh + isb +.endm + +/* * Check whether to yield to another runnable task from kernel mode NEON code * (which runs with preemption disabled). * |