[PATCH v6 16/38] arm64: asm: Provide set_sctlr_el2 macro

[Quentin Perret]

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 <will at kernel.org>
Suggested-by: Will Deacon <will at kernel.org>
Signed-off-by: Quentin Perret <qperret at 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