diff options
Diffstat (limited to 'arch/loongarch/include/asm/vdso/vdso.h')
| -rw-r--r-- | arch/loongarch/include/asm/vdso/vdso.h | 32 |
1 files changed, 27 insertions, 5 deletions
diff --git a/arch/loongarch/include/asm/vdso/vdso.h b/arch/loongarch/include/asm/vdso/vdso.h index 3b55d32a0619..5a12309d9fb5 100644 --- a/arch/loongarch/include/asm/vdso/vdso.h +++ b/arch/loongarch/include/asm/vdso/vdso.h @@ -16,10 +16,33 @@ struct vdso_pcpu_data { struct loongarch_vdso_data { struct vdso_pcpu_data pdata[NR_CPUS]; - struct vdso_data data[CS_BASES]; /* Arch-independent data */ }; -#define VDSO_DATA_SIZE PAGE_ALIGN(sizeof(struct loongarch_vdso_data)) +/* + * The layout of vvar: + * + * high + * +---------------------+--------------------------+ + * | loongarch vdso data | LOONGARCH_VDSO_DATA_SIZE | + * +---------------------+--------------------------+ + * | time-ns vdso data | PAGE_SIZE | + * +---------------------+--------------------------+ + * | generic vdso data | PAGE_SIZE | + * +---------------------+--------------------------+ + * low + */ +#define LOONGARCH_VDSO_DATA_SIZE PAGE_ALIGN(sizeof(struct loongarch_vdso_data)) +#define LOONGARCH_VDSO_DATA_PAGES (LOONGARCH_VDSO_DATA_SIZE >> PAGE_SHIFT) + +enum vvar_pages { + VVAR_GENERIC_PAGE_OFFSET, + VVAR_TIMENS_PAGE_OFFSET, + VVAR_LOONGARCH_PAGES_START, + VVAR_LOONGARCH_PAGES_END = VVAR_LOONGARCH_PAGES_START + LOONGARCH_VDSO_DATA_PAGES - 1, + VVAR_NR_PAGES, +}; + +#define VVAR_SIZE (VVAR_NR_PAGES << PAGE_SHIFT) static inline unsigned long get_vdso_base(void) { @@ -34,10 +57,9 @@ static inline unsigned long get_vdso_base(void) return addr; } -static inline const struct vdso_data *get_vdso_data(void) +static inline unsigned long get_vdso_data(void) { - return (const struct vdso_data *)(get_vdso_base() - - VDSO_DATA_SIZE + SMP_CACHE_BYTES * NR_CPUS); + return get_vdso_base() - VVAR_SIZE; } #endif /* __ASSEMBLY__ */ |