Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / x86 / include / asm / page_32_types.h

diff --git a/kernel/arch/x86/include/asm/page_32_types.h b/kernel/arch/x86/include/asm/page_32_types.h
new file mode 100644 (file)
index 0000000..3a52ee0
--- /dev/null
+++ b/kernel/arch/x86/include/asm/page_32_types.h
@@ -0,0 +1,58 @@
+#ifndef _ASM_X86_PAGE_32_DEFS_H
+#define _ASM_X86_PAGE_32_DEFS_H
+
+#include <linux/const.h>
+
+/*
+ * This handles the memory map.
+ *
+ * A __PAGE_OFFSET of 0xC0000000 means that the kernel has
+ * a virtual address space of one gigabyte, which limits the
+ * amount of physical memory you can use to about 950MB.
+ *
+ * If you want more physical memory than this then see the CONFIG_HIGHMEM4G
+ * and CONFIG_HIGHMEM64G options in the kernel configuration.
+ */
+#define __PAGE_OFFSET          _AC(CONFIG_PAGE_OFFSET, UL)
+
+#define __START_KERNEL_map     __PAGE_OFFSET
+
+#define THREAD_SIZE_ORDER      1
+#define THREAD_SIZE            (PAGE_SIZE << THREAD_SIZE_ORDER)
+
+#define DOUBLEFAULT_STACK 1
+#define NMI_STACK 0
+#define DEBUG_STACK 0
+#define MCE_STACK 0
+#define N_EXCEPTION_STACKS 1
+
+#ifdef CONFIG_X86_PAE
+/* 44=32+12, the limit we can fit into an unsigned long pfn */
+#define __PHYSICAL_MASK_SHIFT  44
+#define __VIRTUAL_MASK_SHIFT   32
+
+#else  /* !CONFIG_X86_PAE */
+#define __PHYSICAL_MASK_SHIFT  32
+#define __VIRTUAL_MASK_SHIFT   32
+#endif /* CONFIG_X86_PAE */
+
+/*
+ * Kernel image size is limited to 512 MB (see in arch/x86/kernel/head_32.S)
+ */
+#define KERNEL_IMAGE_SIZE      (512 * 1024 * 1024)
+
+#ifndef __ASSEMBLY__
+
+/*
+ * This much address space is reserved for vmalloc() and iomap()
+ * as well as fixmap mappings.
+ */
+extern unsigned int __VMALLOC_RESERVE;
+extern int sysctl_legacy_va_layout;
+
+extern void find_low_pfn_range(void);
+extern void setup_bootmem_allocator(void);
+
+#endif /* !__ASSEMBLY__ */
+
+#endif /* _ASM_X86_PAGE_32_DEFS_H */