[PATCH v4 05/36] arm64/sysreg: Add GICR CDNMIA encoding
From: Sascha Bischoff <hidden>
Date: 2026-01-28 18:01:54
Also in:
kvm, kvmarm
Subsystem:
arm64 port (aarch64 architecture), the rest · Maintainers:
Catalin Marinas, Will Deacon, Linus Torvalds
The encoding for the GICR CDNMIA system instruction is thus far unused (and shall remain unused for the time being). However, in order to plumb the FGTs into KVM correctly, KVM needs to be made aware of the encoding of this system instruction. Signed-off-by: Sascha Bischoff <redacted> Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com> --- arch/arm64/include/asm/sysreg.h | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/arch/arm64/include/asm/sysreg.h b/arch/arm64/include/asm/sysreg.h
index c547a14bb6aa..0d05a8b882a4 100644
--- a/arch/arm64/include/asm/sysreg.h
+++ b/arch/arm64/include/asm/sysreg.h@@ -1060,6 +1060,7 @@ #define GICV5_OP_GIC_CDPRI sys_insn(1, 0, 12, 1, 2) #define GICV5_OP_GIC_CDRCFG sys_insn(1, 0, 12, 1, 5) #define GICV5_OP_GICR_CDIA sys_insn(1, 0, 12, 3, 0) +#define GICV5_OP_GICR_CDNMIA sys_insn(1, 0, 12, 3, 1) /* Definitions for GIC CDAFF */ #define GICV5_GIC_CDAFF_IAFFID_MASK GENMASK_ULL(47, 32)
@@ -1106,6 +1107,12 @@ #define GICV5_GIC_CDIA_TYPE_MASK GENMASK_ULL(31, 29) #define GICV5_GIC_CDIA_ID_MASK GENMASK_ULL(23, 0) +/* Definitions for GICR CDNMIA */ +#define GICV5_GICR_CDNMIA_VALID_MASK BIT_ULL(32) +#define GICV5_GICR_CDNMIA_VALID(r) FIELD_GET(GICV5_GICR_CDNMIA_VALID_MASK, r) +#define GICV5_GICR_CDNMIA_TYPE_MASK GENMASK_ULL(31, 29) +#define GICV5_GICR_CDNMIA_ID_MASK GENMASK_ULL(23, 0) + #define gicr_insn(insn) read_sysreg_s(GICV5_OP_GICR_##insn) #define gic_insn(v, insn) write_sysreg_s(v, GICV5_OP_GIC_##insn)
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2.34.1