diff options
author | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 12:17:53 -0700 |
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committer | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 15:44:42 -0700 |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/arch/x86/include/asm/page_types.h | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/arch/x86/include/asm/page_types.h')
-rw-r--r-- | kernel/arch/x86/include/asm/page_types.h | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/kernel/arch/x86/include/asm/page_types.h b/kernel/arch/x86/include/asm/page_types.h new file mode 100644 index 000000000..c7c712f26 --- /dev/null +++ b/kernel/arch/x86/include/asm/page_types.h @@ -0,0 +1,70 @@ +#ifndef _ASM_X86_PAGE_DEFS_H +#define _ASM_X86_PAGE_DEFS_H + +#include <linux/const.h> +#include <linux/types.h> + +/* PAGE_SHIFT determines the page size */ +#define PAGE_SHIFT 12 +#define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT) +#define PAGE_MASK (~(PAGE_SIZE-1)) + +#define __PHYSICAL_MASK ((phys_addr_t)((1ULL << __PHYSICAL_MASK_SHIFT) - 1)) +#define __VIRTUAL_MASK ((1UL << __VIRTUAL_MASK_SHIFT) - 1) + +/* Cast PAGE_MASK to a signed type so that it is sign-extended if + virtual addresses are 32-bits but physical addresses are larger + (ie, 32-bit PAE). */ +#define PHYSICAL_PAGE_MASK (((signed long)PAGE_MASK) & __PHYSICAL_MASK) + +#define PMD_PAGE_SIZE (_AC(1, UL) << PMD_SHIFT) +#define PMD_PAGE_MASK (~(PMD_PAGE_SIZE-1)) + +#define HPAGE_SHIFT PMD_SHIFT +#define HPAGE_SIZE (_AC(1,UL) << HPAGE_SHIFT) +#define HPAGE_MASK (~(HPAGE_SIZE - 1)) +#define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT) + +#define HUGE_MAX_HSTATE 2 + +#define PAGE_OFFSET ((unsigned long)__PAGE_OFFSET) + +#define VM_DATA_DEFAULT_FLAGS \ + (((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0 ) | \ + VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) + +#define __PHYSICAL_START ALIGN(CONFIG_PHYSICAL_START, \ + CONFIG_PHYSICAL_ALIGN) + +#define __START_KERNEL (__START_KERNEL_map + __PHYSICAL_START) + +#ifdef CONFIG_X86_64 +#include <asm/page_64_types.h> +#define IOREMAP_MAX_ORDER (PUD_SHIFT) +#else +#include <asm/page_32_types.h> +#define IOREMAP_MAX_ORDER (PMD_SHIFT) +#endif /* CONFIG_X86_64 */ + +#ifndef __ASSEMBLY__ + +extern int devmem_is_allowed(unsigned long pagenr); + +extern unsigned long max_low_pfn_mapped; +extern unsigned long max_pfn_mapped; + +static inline phys_addr_t get_max_mapped(void) +{ + return (phys_addr_t)max_pfn_mapped << PAGE_SHIFT; +} + +bool pfn_range_is_mapped(unsigned long start_pfn, unsigned long end_pfn); + +extern unsigned long init_memory_mapping(unsigned long start, + unsigned long end); + +extern void initmem_init(void); + +#endif /* !__ASSEMBLY__ */ + +#endif /* _ASM_X86_PAGE_DEFS_H */ |