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RISC-V: Provide pgtable_l5_enabled on rv32

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A few of the other page table level helpers are defined on rv32, but not
pgtable_l5_enabled.  This adds the definition as a constant and converts
pgtable_l4_enabled to a constant as well.

Link: https://lore.kernel.org/r/20230830044129.11481-2-palmer@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
This commit is contained in:
Palmer Dabbelt 2023-08-29 21:39:19 -07:00
parent 60c46877e9
commit 10128f8b16
No known key found for this signature in database
GPG Key ID: 2E1319F35FBB1889
3 changed files with 5 additions and 1 deletions
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3
arch/riscv/include/asm/pgtable-32.h
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@ -33,4 +33,7 @@
_PAGE_WRITE | _PAGE_EXEC | \
_PAGE_USER | _PAGE_GLOBAL))
static const __maybe_unused int pgtable_l4_enabled;
static const __maybe_unused int pgtable_l5_enabled;
#endif /* _ASM_RISCV_PGTABLE_32_H */

1
arch/riscv/include/asm/pgtable.h
View File

@ -914,7 +914,6 @@ extern uintptr_t _dtb_early_pa;
#define dtb_early_pa _dtb_early_pa
#endif /* CONFIG_XIP_KERNEL */
extern u64 satp_mode;
extern bool pgtable_l4_enabled;
void paging_init(void);
void misc_mem_init(void);

2
arch/riscv/mm/init.c
View File

@ -49,10 +49,12 @@ u64 satp_mode __ro_after_init = SATP_MODE_32;
#endif
EXPORT_SYMBOL(satp_mode);
#ifdef CONFIG_64BIT
bool pgtable_l4_enabled = IS_ENABLED(CONFIG_64BIT) && !IS_ENABLED(CONFIG_XIP_KERNEL);
bool pgtable_l5_enabled = IS_ENABLED(CONFIG_64BIT) && !IS_ENABLED(CONFIG_XIP_KERNEL);
EXPORT_SYMBOL(pgtable_l4_enabled);
EXPORT_SYMBOL(pgtable_l5_enabled);
#endif
phys_addr_t phys_ram_base __ro_after_init;
EXPORT_SYMBOL(phys_ram_base);