diff options
| -rw-r--r-- | arch/sparc/include/asm/page_64.h | 1 | ||||
| -rw-r--r-- | arch/sparc/include/asm/pgtable_64.h | 9 | ||||
| -rw-r--r-- | arch/sparc/kernel/ktlb.S | 8 | ||||
| -rw-r--r-- | arch/sparc/mm/init_64.c | 30 |
4 files changed, 28 insertions, 20 deletions
diff --git a/arch/sparc/include/asm/page_64.h b/arch/sparc/include/asm/page_64.h index 6784a338282..8c2a8c93754 100644 --- a/arch/sparc/include/asm/page_64.h +++ b/arch/sparc/include/asm/page_64.h @@ -117,7 +117,6 @@ extern unsigned long sparc64_va_hole_bottom; #include <asm-generic/memory_model.h> -#define PAGE_OFFSET_BY_BITS(X) (-(_AC(1,UL) << (X))) extern unsigned long PAGE_OFFSET; #endif /* !(__ASSEMBLY__) */ diff --git a/arch/sparc/include/asm/pgtable_64.h b/arch/sparc/include/asm/pgtable_64.h index 0552957f6dd..c0939228e4b 100644 --- a/arch/sparc/include/asm/pgtable_64.h +++ b/arch/sparc/include/asm/pgtable_64.h @@ -40,10 +40,7 @@ #define LOW_OBP_ADDRESS _AC(0x00000000f0000000,UL) #define HI_OBP_ADDRESS _AC(0x0000000100000000,UL) #define VMALLOC_START _AC(0x0000000100000000,UL) -#define VMALLOC_END _AC(0x0000010000000000,UL) -#define VMEMMAP_BASE _AC(0x0000010000000000,UL) - -#define vmemmap ((struct page *)VMEMMAP_BASE) +#define VMEMMAP_BASE VMALLOC_END /* PMD_SHIFT determines the size of the area a second-level page * table can map @@ -81,6 +78,10 @@ #ifndef __ASSEMBLY__ +extern unsigned long VMALLOC_END; + +#define vmemmap ((struct page *)VMEMMAP_BASE) + #include <linux/sched.h> bool kern_addr_valid(unsigned long addr); diff --git a/arch/sparc/kernel/ktlb.S b/arch/sparc/kernel/ktlb.S index 2627a7fa33d..ef0d8e9e121 100644 --- a/arch/sparc/kernel/ktlb.S +++ b/arch/sparc/kernel/ktlb.S @@ -199,8 +199,8 @@ kvmap_dtlb_nonlinear: #ifdef CONFIG_SPARSEMEM_VMEMMAP /* Do not use the TSB for vmemmap. */ - mov (VMEMMAP_BASE >> 40), %g5 - sllx %g5, 40, %g5 + sethi %hi(VMEMMAP_BASE), %g5 + ldx [%g5 + %lo(VMEMMAP_BASE)], %g5 cmp %g4,%g5 bgeu,pn %xcc, kvmap_vmemmap nop @@ -212,8 +212,8 @@ kvmap_dtlb_tsbmiss: sethi %hi(MODULES_VADDR), %g5 cmp %g4, %g5 blu,pn %xcc, kvmap_dtlb_longpath - mov (VMALLOC_END >> 40), %g5 - sllx %g5, 40, %g5 + sethi %hi(VMALLOC_END), %g5 + ldx [%g5 + %lo(VMALLOC_END)], %g5 cmp %g4, %g5 bgeu,pn %xcc, kvmap_dtlb_longpath nop diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c index 616196c2f40..b8e7b4de971 100644 --- a/arch/sparc/mm/init_64.c +++ b/arch/sparc/mm/init_64.c @@ -1368,25 +1368,24 @@ static unsigned long max_phys_bits = 40; bool kern_addr_valid(unsigned long addr) { - unsigned long above = ((long)addr) >> max_phys_bits; pgd_t *pgd; pud_t *pud; pmd_t *pmd; pte_t *pte; - if (above != 0 && above != -1UL) - return false; - - if (addr >= (unsigned long) KERNBASE && - addr < (unsigned long)&_end) - return true; - - if (addr >= PAGE_OFFSET) { + if ((long)addr < 0L) { unsigned long pa = __pa(addr); + if ((addr >> max_phys_bits) != 0UL) + return false; + return pfn_valid(pa >> PAGE_SHIFT); } + if (addr >= (unsigned long) KERNBASE && + addr < (unsigned long)&_end) + return true; + pgd = pgd_offset_k(addr); if (pgd_none(*pgd)) return 0; @@ -1655,6 +1654,9 @@ unsigned long __init find_ecache_flush_span(unsigned long size) unsigned long PAGE_OFFSET; EXPORT_SYMBOL(PAGE_OFFSET); +unsigned long VMALLOC_END = 0x0000010000000000UL; +EXPORT_SYMBOL(VMALLOC_END); + unsigned long sparc64_va_hole_top = 0xfffff80000000000UL; unsigned long sparc64_va_hole_bottom = 0x0000080000000000UL; @@ -1711,10 +1713,16 @@ static void __init setup_page_offset(void) prom_halt(); } - PAGE_OFFSET = PAGE_OFFSET_BY_BITS(max_phys_bits); + PAGE_OFFSET = sparc64_va_hole_top; + VMALLOC_END = ((sparc64_va_hole_bottom >> 1) + + (sparc64_va_hole_bottom >> 2)); - pr_info("PAGE_OFFSET is 0x%016lx (max_phys_bits == %lu)\n", + pr_info("MM: PAGE_OFFSET is 0x%016lx (max_phys_bits == %lu)\n", PAGE_OFFSET, max_phys_bits); + pr_info("MM: VMALLOC [0x%016lx --> 0x%016lx]\n", + VMALLOC_START, VMALLOC_END); + pr_info("MM: VMEMMAP [0x%016lx --> 0x%016lx]\n", + VMEMMAP_BASE, VMEMMAP_BASE << 1); } static void __init tsb_phys_patch(void) |