Commit 213ef669 authored by Enze Li's avatar Enze Li Committed by Huacai Chen
Browse files

LoongArch: Replace hard-coded values in comments with VALEN 

According to LoongArch documentation [1], CSR.PGDL and CSR.PGDH are
concerned with the VA's MSB which is VALEN-1 instead of always being 47.
Fix comments to avoid misleading others.

[1] https://loongson.github.io/LoongArch-Documentation/LoongArch-Vol1-EN.html#page-global-directory-base-address-for-lower-half-address-space



Reviewed-by: default avatarWANG Xuerui <git@xen0n.name>
Signed-off-by: default avatarEnze Li <lienze@kylinos.cn>
Signed-off-by: default avatarHuacai Chen <chenhuacai@loongson.cn>
parent afca6e06

arch/loongarch/include/asm/loongarch.h

+2 −2
Original line number Diff line number Diff line
@@ -423,9 +423,9 @@ static __always_inline void iocsr_write64(u64 val, u32 reg) 
#define  CSR_ASID_ASID_WIDTH		10

#define  CSR_ASID_ASID			(_ULCAST_(0x3ff) << CSR_ASID_ASID_SHIFT)



#define LOONGARCH_CSR_PGDL		0x19	/* Page table base address when VA[47] = 0 */

#define LOONGARCH_CSR_PGDL		0x19	/* Page table base address when VA[VALEN-1] = 0 */



#define LOONGARCH_CSR_PGDH		0x1a	/* Page table base address when VA[47] = 1 */

#define LOONGARCH_CSR_PGDH		0x1a	/* Page table base address when VA[VALEN-1] = 1 */



#define LOONGARCH_CSR_PGD		0x1b	/* Page table base */