We will soon need to turn the EL2 stage 1 MMU on and off in nVHE
protected mode, so refactor the set_sctlr_el1 macro to make it usable
for that purpose.
Acked-by: Will Deacon <w...@kernel.org>
Suggested-by: Will Deacon <w...@kernel.org>
Signed-off-by: Quentin Perret <qper...@google.com>
---
arch/arm64/include/asm/assembler.h | 14 +++++++++++---
1 file changed, 11 insertions(+), 3 deletions(-)
diff --git a/arch/arm64/include/asm/assembler.h
b/arch/arm64/include/asm/assembler.h
index ca31594d3d6c..fb651c1f26e9 100644
--- a/arch/arm64/include/asm/assembler.h
+++ b/arch/arm64/include/asm/assembler.h
@@ -676,11 +676,11 @@ USER(\label, ic ivau, \tmp2) //
invalidate I line PoU
.endm
/*
- * Set SCTLR_EL1 to the passed value, and invalidate the local icache
+ * Set SCTLR_ELx to the @reg 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
+.macro set_sctlr, sreg, reg
+ msr \sreg, \reg
isb
/*
* Invalidate the local I-cache so that any instructions fetched
@@ -692,6 +692,14 @@ USER(\label, ic ivau, \tmp2) //
invalidate I line PoU
isb
.endm
+.macro set_sctlr_el1, reg
+ set_sctlr sctlr_el1, \reg
+.endm
+
+.macro set_sctlr_el2, reg
+ set_sctlr sctlr_el2, \reg
+.endm
+
/*
* Check whether to yield to another runnable task from kernel mode NEON code
* (which runs with preemption disabled).
--
2.31.0.rc2.261.g7f71774620-goog
