diff options
Diffstat (limited to 'arch/x86/mm/ioremap_32.c')
| -rw-r--r-- | arch/x86/mm/ioremap_32.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/x86/mm/ioremap_32.c b/arch/x86/mm/ioremap_32.c index 4d919c37d1d..f4a2082568c 100644 --- a/arch/x86/mm/ioremap_32.c +++ b/arch/x86/mm/ioremap_32.c @@ -19,6 +19,18 @@ #include <asm/pgtable.h> #include <asm/tlbflush.h> +#ifdef CONFIG_X86_64 + +unsigned long __phys_addr(unsigned long x) +{ + if (x >= __START_KERNEL_map) + return x - __START_KERNEL_map + phys_base; + return x - PAGE_OFFSET; +} +EXPORT_SYMBOL(__phys_addr); + +#endif + /* * Fix up the linear direct mapping of the kernel to avoid cache attribute * conflicts. @@ -49,6 +61,7 @@ static int ioremap_change_attr(unsigned long phys_addr, unsigned long size, * memmap entry. */ err = change_page_attr_addr(vaddr, npages, prot); + if (!err) global_flush_tlb(); @@ -83,6 +96,7 @@ void __iomem *__ioremap(unsigned long phys_addr, unsigned long size, if (phys_addr >= ISA_START_ADDRESS && last_addr < ISA_END_ADDRESS) return (__force void __iomem *)phys_to_virt(phys_addr); +#ifdef CONFIG_X86_32 /* * Don't allow anybody to remap normal RAM that we're using.. */ @@ -98,6 +112,7 @@ void __iomem *__ioremap(unsigned long phys_addr, unsigned long size, if (!PageReserved(page)) return NULL; } +#endif pgprot = MAKE_GLOBAL(__PAGE_KERNEL | flags); @@ -211,6 +226,7 @@ void iounmap(volatile void __iomem *addr) } EXPORT_SYMBOL(iounmap); +#ifdef CONFIG_X86_32 int __initdata early_ioremap_debug; @@ -443,3 +459,5 @@ void __this_fixmap_does_not_exist(void) { WARN_ON(1); } + +#endif /* CONFIG_X86_32 */ |