diff options
Diffstat (limited to 'sys/amd64/include/vmparam.h')
| -rw-r--r-- | sys/amd64/include/vmparam.h | 36 |
1 files changed, 24 insertions, 12 deletions
diff --git a/sys/amd64/include/vmparam.h b/sys/amd64/include/vmparam.h index 0e9697d..91a62ed 100644 --- a/sys/amd64/include/vmparam.h +++ b/sys/amd64/include/vmparam.h @@ -41,7 +41,7 @@ #ifndef _MACHINE_VMPARAM_H_ -#define _MACHINE_VMPARAM_H_ 1 +#define _MACHINE_VMPARAM_H_ 1 /* * Machine dependent constants for AMD64. @@ -64,7 +64,7 @@ #define MAXSSIZ (64UL*1024*1024) /* max stack size */ #endif #ifndef SGROWSIZ -#define SGROWSIZ (128UL*1024) /* amount to grow stack */ +#define SGROWSIZ (128UL*1024) /* amount to grow stack */ #endif /* @@ -78,6 +78,12 @@ */ #define MAXSLP 20 +/* + * We provide a machine specific single page allocator through the tuse + * of the direct mapped segment. This uses 2MB pages for reduced + * TLB pressure. + */ +#define UMA_MD_SMALL_ALLOC /* * Virtual addresses of things. Derived from the page directory and @@ -86,24 +92,30 @@ * messy at times, but hey, we'll do anything to save a page :-) */ -#define VM_MAX_KERNEL_ADDRESS VADDR(0, 0, KPTDI+NKPDE-1, NPTEPG-1) -#define VM_MIN_KERNEL_ADDRESS VADDR(0, 0, PTDPTDI, PTDPTDI) +#define VM_MAX_KERNEL_ADDRESS VADDR(KPML4I, NPDPEPG-1, NKPDE-1, NPTEPG-1) +#define VM_MIN_KERNEL_ADDRESS VADDR(KPML4I, KPDPI, 0, 0) + +#define DMAP_MIN_ADDRESS VADDR(DMPML4I, 0, 0, 0) +#define DMAP_MAX_ADDRESS VADDR(DMPML4I+1, 0, 0, 0) + +#define KERNBASE VADDR(KPML4I, KPDPI, 0, 0) -#define KERNBASE VADDR(0, 0, KPTDI, 0) +#define UPT_MAX_ADDRESS VADDR(PML4PML4I, PML4PML4I, PML4PML4I, PML4PML4I) +#define UPT_MIN_ADDRESS VADDR(PML4PML4I, 0, 0, 0) -#define UPT_MAX_ADDRESS VADDR(0, 0, PTDPTDI, PTDPTDI) -#define UPT_MIN_ADDRESS VADDR(0, 0, PTDPTDI, 0) +#define VM_MAXUSER_ADDRESS VADDR(NUPML4E, 0, 0, 0) -#define VM_MAXUSER_ADDRESS UPT_MIN_ADDRESS +#define USRSTACK VM_MAXUSER_ADDRESS -#define USRSTACK VM_MAXUSER_ADDRESS +#define VM_MAX_ADDRESS UPT_MAX_ADDRESS +#define VM_MIN_ADDRESS (0) -#define VM_MAX_ADDRESS UPT_MAX_ADDRESS -#define VM_MIN_ADDRESS (0) +#define PHYS_TO_DMAP(x) ((x) | DMAP_MIN_ADDRESS) +#define DMAP_TO_PHYS(x) ((x) & ~DMAP_MIN_ADDRESS) /* virtual sizes (bytes) for various kernel submaps */ #ifndef VM_KMEM_SIZE -#define VM_KMEM_SIZE (12 * 1024 * 1024) +#define VM_KMEM_SIZE (12 * 1024 * 1024) #endif /* |
