On Fri, Dec 30, 2011 at 03:10:33PM +0100, Sam Ravnborg wrote: > On Fri, Dec 30, 2011 at 11:44:28PM +1100, Julian Calaby wrote: > > Sam, > > > > I understand if this isn't used at all, but this seems to be Sun4C > > stuff, so why isn't it used - are these defines defined elsewhere? > > The SUN4C stuff is defined in arch/sparc/include/asm/pgtsun4c.h The diff between pgtsun.h and pgtsun4c.h is very small. The relevant part of the diff is below: @@ -9,10 +10,10 @@ #include <asm/contregs.h> /* PMD_SHIFT determines the size of the area a second-level page table can map */ -#define SUN4C_PMD_SHIFT 22 +#define SUN4C_PMD_SHIFT 23 /* PGDIR_SHIFT determines what a third-level page table entry can map */ -#define SUN4C_PGDIR_SHIFT 22 +#define SUN4C_PGDIR_SHIFT 23 #define SUN4C_PGDIR_SIZE (1UL << SUN4C_PGDIR_SHIFT) #define SUN4C_PGDIR_MASK (~(SUN4C_PGDIR_SIZE-1)) #define SUN4C_PGDIR_ALIGN(addr) (((addr)+SUN4C_PGDIR_SIZE-1)&SUN4C_PGDIR_MASK) @@ -23,9 +24,9 @@ #define SUN4C_REAL_PGDIR_MASK (~(SUN4C_REAL_PGDIR_SIZE-1)) #define SUN4C_REAL_PGDIR_ALIGN(addr) (((addr)+SUN4C_REAL_PGDIR_SIZE-1)&SUN4C_REAL_PGDIR_MASK) -/* 16 bit PFN on sun4c */ -#define SUN4C_PFN_MASK 0xffff - +/* 19 bit PFN on sun4 */ +#define SUN4C_PFN_MASK 0x7ffff + /* Don't increase these unless the structures in sun4c.c are fixed */ #define SUN4C_MAX_SEGMAPS 256 #define SUN4C_MAX_CONTEXTS 16 I stripped aways the parts which was in comments and white-space only. Sam -- To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
