diff options
| author | Marc Zyngier <maz@kernel.org> | 2021-02-08 09:57:12 +0000 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2021-02-08 12:51:26 +0000 |
| commit | 8cc8a32415364e475c25277b507f06f67c47ca9a (patch) | |
| tree | 2232aa234444c200b37fe8ea5522f19502a35e46 /arch/arm64/mm/proc.S | |
| parent | b161f92482426a7323884d57cbae683812909988 (diff) | |
| download | linux-8cc8a32415364e475c25277b507f06f67c47ca9a.tar.bz2 | |
arm64: Turn the MMU-on sequence into a macro
Turning the MMU on is a popular sport in the arm64 kernel, and
we do it more than once, or even twice. As we are about to add
even more, let's turn it into a macro.
No expected functional change.
Signed-off-by: Marc Zyngier <maz@kernel.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: David Brazdil <dbrazdil@google.com>
Link: https://lore.kernel.org/r/20210208095732.3267263-4-maz@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'arch/arm64/mm/proc.S')
| -rw-r--r-- | arch/arm64/mm/proc.S | 12 |
1 files changed, 1 insertions, 11 deletions
diff --git a/arch/arm64/mm/proc.S b/arch/arm64/mm/proc.S index ece785477bdc..c967bfd30d2b 100644 --- a/arch/arm64/mm/proc.S +++ b/arch/arm64/mm/proc.S @@ -291,17 +291,7 @@ skip_pgd: /* We're done: fire up the MMU again */ mrs x17, sctlr_el1 orr x17, x17, #SCTLR_ELx_M - msr sctlr_el1, x17 - 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 + set_sctlr_el1 x17 /* Set the flag to zero to indicate that we're all done */ str wzr, [flag_ptr] |