[PATCH v4 15/34] arm64: asm: Provide set_sctlr_el2 macro
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STALE2043d
SUPERSEDED
From: Quentin Perret <hidden>
Date: 2021-03-10 17:59:21
Also in:
kvmarm, lkml
Subsystem:
arm64 port (aarch64 architecture), the rest · Maintainers:
Catalin Marinas, Will Deacon, Linus Torvalds
Revision v4 of 3 in this series.
Revisions (3)
- v3 [diff vs current]
- v4 current
- v5 [diff vs current]
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. Signed-off-by: Quentin Perret <redacted> --- 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).
--
2.30.1.766.gb4fecdf3b7-goog
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