| Message ID | 20231124163510.1835740-9-joey.gouly@arm.com |
|---|---|
| State | New |
| Headers | show |
| Series | [v3,01/25] arm64/sysreg: add system register POR_EL{0,1} | expand |
diff --git a/arch/arm64/include/asm/pgtable-hwdef.h b/arch/arm64/include/asm/pgtable-hwdef.h index e4944d517c99..fe270fa39110 100644 --- a/arch/arm64/include/asm/pgtable-hwdef.h +++ b/arch/arm64/include/asm/pgtable-hwdef.h @@ -178,6 +178,16 @@ #define PTE_PI_IDX_2 53 /* PXN */ #define PTE_PI_IDX_3 54 /* UXN */ +/* + * POIndex[2:0] encoding (Permission Overlay Extension) + */ +#define PTE_PO_IDX_0 (_AT(pteval_t, 1) << 60) +#define PTE_PO_IDX_1 (_AT(pteval_t, 1) << 61) +#define PTE_PO_IDX_2 (_AT(pteval_t, 1) << 62) + +#define PTE_PO_IDX_MASK GENMASK_ULL(62, 60) + + /* * Memory Attribute override for Stage-2 (MemAttr[3:0]) */
The 3-bit POIndex is stored in the PTE at bits 60..62. Signed-off-by: Joey Gouly <joey.gouly@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will@kernel.org> --- arch/arm64/include/asm/pgtable-hwdef.h | 10 ++++++++++ 1 file changed, 10 insertions(+)