diff options
Diffstat (limited to 'arch/powerpc/include/asm/processor.h')
| -rw-r--r-- | arch/powerpc/include/asm/processor.h | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/arch/powerpc/include/asm/processor.h b/arch/powerpc/include/asm/processor.h index e0fecbcea2a2..ea4b6c696f1f 100644 --- a/arch/powerpc/include/asm/processor.h +++ b/arch/powerpc/include/asm/processor.h @@ -102,11 +102,25 @@ void release_thread(struct task_struct *); #endif #ifdef CONFIG_PPC64 -/* 64-bit user address space is 46-bits (64TB user VM) */ -#define TASK_SIZE_USER64 (0x0000400000000000UL) +/* + * 64-bit user address space can have multiple limits + * For now supported values are: + */ +#define TASK_SIZE_64TB (0x0000400000000000UL) +#define TASK_SIZE_128TB (0x0000800000000000UL) +#define TASK_SIZE_512TB (0x0002000000000000UL) -/* - * 32-bit user address space is 4GB - 1 page +#ifdef CONFIG_PPC_BOOK3S_64 +/* + * Max value currently used: + */ +#define TASK_SIZE_USER64 TASK_SIZE_128TB +#else +#define TASK_SIZE_USER64 TASK_SIZE_64TB +#endif + +/* + * 32-bit user address space is 4GB - 1 page * (this 1 page is needed so referencing of 0xFFFFFFFF generates EFAULT */ #define TASK_SIZE_USER32 (0x0000000100000000UL - (1*PAGE_SIZE)) |