diff options
Diffstat (limited to 'arch/arm/mm')
| -rw-r--r-- | arch/arm/mm/Kconfig | 2 | ||||
| -rw-r--r-- | arch/arm/mm/copypage-xscale.c | 6 | ||||
| -rw-r--r-- | arch/arm/mm/init.c | 8 |
3 files changed, 12 insertions, 4 deletions
diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig index c1222c0e9fd3..0ab3a86b1f52 100644 --- a/arch/arm/mm/Kconfig +++ b/arch/arm/mm/Kconfig @@ -106,7 +106,7 @@ config CPU_ARM922T help The ARM922T is a version of the ARM920T, but with smaller instruction and data caches. It is used in Altera's - Excalibur XA device family and Micrel's KS8695 Centaur. + Excalibur XA device family and the ARM Integrator. Say Y if you want support for the ARM922T processor. Otherwise, say N. diff --git a/arch/arm/mm/copypage-xscale.c b/arch/arm/mm/copypage-xscale.c index 61d834157bc0..382e1c2855e8 100644 --- a/arch/arm/mm/copypage-xscale.c +++ b/arch/arm/mm/copypage-xscale.c @@ -42,6 +42,7 @@ static void mc_copy_user_page(void *from, void *to) * when prefetching destination as well. (NP) */ asm volatile ("\ +.arch xscale \n\ pld [%0, #0] \n\ pld [%0, #32] \n\ pld [%1, #0] \n\ @@ -106,8 +107,9 @@ void xscale_mc_clear_user_highpage(struct page *page, unsigned long vaddr) { void *ptr, *kaddr = kmap_atomic(page); - asm volatile( - "mov r1, %2 \n\ + asm volatile("\ +.arch xscale \n\ + mov r1, %2 \n\ mov r2, #0 \n\ mov r3, #0 \n\ 1: mov ip, %0 \n\ diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c index 16d373d587c4..b4be3baa83d4 100644 --- a/arch/arm/mm/init.c +++ b/arch/arm/mm/init.c @@ -175,6 +175,11 @@ static void __init zone_sizes_init(unsigned long min, unsigned long max_low, #ifdef CONFIG_HAVE_ARCH_PFN_VALID int pfn_valid(unsigned long pfn) { + phys_addr_t addr = __pfn_to_phys(pfn); + + if (__phys_to_pfn(addr) != pfn) + return 0; + return memblock_is_map_memory(__pfn_to_phys(pfn)); } EXPORT_SYMBOL(pfn_valid); @@ -628,7 +633,8 @@ static void update_sections_early(struct section_perm perms[], int n) if (t->flags & PF_KTHREAD) continue; for_each_thread(t, s) - set_section_perms(perms, n, true, s->mm); + if (s->mm) + set_section_perms(perms, n, true, s->mm); } set_section_perms(perms, n, true, current->active_mm); set_section_perms(perms, n, true, &init_mm); |
