OXIESEC PANEL

Name	Size	Modified	Perms
📁 ..	-	05/09/2024 07:14:12 AM	rwxr-xr-x
📄 Kbuild	703 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 acenv.h	541 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 acpi.h	4.34 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 alternative.h	7.63 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 arch_gicv3.h	3.44 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 arch_timer.h	4.87 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 arm-cci.h	794 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 asm-bug.h	1.45 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 asm-offsets.h	35 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 asm-uaccess.h	2.09 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 assembler.h	13.51 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 atomic.h	8.35 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 atomic_ll_sc.h	10.61 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 atomic_lse.h	14.82 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 barrier.h	3.78 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 bitops.h	1.9 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 bitrev.h	452 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 boot.h	384 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 brk-imm.h	706 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 bug.h	1.09 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 cache.h	2.23 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 cacheflush.h	4.87 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 checksum.h	1.35 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 clocksource.h	192 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 cmpxchg.h	7.98 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 compat.h	7.15 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 compiler.h	1.18 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 cpu.h	1.84 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 cpu_ops.h	2.73 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 cpucaps.h	1.87 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 cpufeature.h	19.14 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 cpuidle.h	401 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 cputype.h	8.1 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 current.h	517 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 daifflags.h	1.59 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 dcc.h	1.36 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 debug-monitors.h	3.76 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 device.h	886 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 dma-mapping.h	2.42 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 dmi.h	850 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 efi.h	4.57 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 elf.h	5.7 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 esr.h	9.02 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 exception.h	1.21 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 exec.h	868 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 extable.h	815 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 fb.h	1000 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 fixmap.h	2.91 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 fpsimd.h	4.21 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 fpsimdmacros.h	5.62 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 ftrace.h	1.92 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 futex.h	3.41 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 hardirq.h	2.08 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 hugetlb.h	2.71 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 hw_breakpoint.h	4.46 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 hwcap.h	1.86 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 hypervisor.h	144 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 insn.h	16.03 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 io.h	7.72 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 irq.h	307 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 irq_work.h	228 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 irqflags.h	2.3 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 jump_label.h	1.68 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 kasan.h	1.16 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 kernel-pgtable.h	4.03 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 kexec.h	2.42 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 kgdb.h	3.79 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 kprobes.h	1.74 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 kvm_arm.h	8.38 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 kvm_asm.h	4.26 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 kvm_coproc.h	2.04 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 kvm_emulate.h	10.38 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 kvm_host.h	15.73 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 kvm_hyp.h	5.79 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 kvm_mmio.h	1.3 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 kvm_mmu.h	11.72 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 linkage.h	114 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 lse.h	1.26 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 memblock.h	720 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 memory.h	9.16 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 mmu.h	2.76 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 mmu_context.h	6.35 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 mmzone.h	266 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 module.h	2.8 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 neon.h	815 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 numa.h	1.33 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 page-def.h	1.17 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 page.h	1.61 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 paravirt.h	458 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 pci.h	878 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 percpu.h	7.48 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 perf_event.h	3.17 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 pgalloc.h	3.71 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 pgtable-hwdef.h	9.4 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 pgtable-prot.h	4.38 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 pgtable-types.h	1.84 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 pgtable.h	21.55 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 probes.h	1022 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 proc-fns.h	1.21 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 processor.h	6.52 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 ptdump.h	1.42 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 ptrace.h	9 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 sdei.h	1.46 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 seccomp.h	714 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 sections.h	1.46 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 shmparam.h	965 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 signal32.h	1.45 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 simd.h	1.39 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 smp.h	4.23 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 smp_plat.h	1.43 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 sparsemem.h	771 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 spinlock.h	3.33 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 spinlock_types.h	1.06 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 stack_pointer.h	247 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 stackprotector.h	1.11 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 stacktrace.h	2.53 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 stage2_pgtable-nopmd.h	1.3 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 stage2_pgtable-nopud.h	1.24 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 stage2_pgtable.h	4.89 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 stat.h	1.43 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 string.h	2.33 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 suspend.h	1.65 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 sync_bitops.h	1.11 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 syscall.h	2.87 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 sysreg.h	25.1 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 system_misc.h	1.86 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 thread_info.h	3.93 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 timex.h	883 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 tlb.h	2.22 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 tlbflush.h	5.38 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 topology.h	1.29 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 traps.h	3.33 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 uaccess.h	12.01 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 unistd.h	1.6 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 unistd32.h	27.53 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 uprobes.h	777 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 vdso.h	1.09 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 vdso_datapage.h	1.53 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 vectors.h	1.75 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 virt.h	3 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 vmap_stack.h	769 bytes	06/16/2023 05:32:39 PM	rw-r--r--
📄 word-at-a-time.h	2.22 KB	06/16/2023 05:32:39 PM	rw-r--r--
📁 xen	-	05/09/2024 07:14:16 AM	rwxr-xr-x

Editing: memory.h

/*
 * Based on arch/arm/include/asm/memory.h
 *
 * Copyright (C) 2000-2002 Russell King
 * Copyright (C) 2012 ARM Ltd.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 * Note: this file should not be included by non-asm/.h files
 */
#ifndef __ASM_MEMORY_H
#define __ASM_MEMORY_H

#include <linux/compiler.h>
#include <linux/const.h>
#include <linux/types.h>
#include <asm/bug.h>
#include <asm/page-def.h>
#include <asm/sizes.h>

/*
 * Size of the PCI I/O space. This must remain a power of two so that
 * IO_SPACE_LIMIT acts as a mask for the low bits of I/O addresses.
 */
#define PCI_IO_SIZE		SZ_16M

/*
 * Log2 of the upper bound of the size of a struct page. Used for sizing
 * the vmemmap region only, does not affect actual memory footprint.
 * We don't use sizeof(struct page) directly since taking its size here
 * requires its definition to be available at this point in the inclusion
 * chain, and it may not be a power of 2 in the first place.
 */
#define STRUCT_PAGE_MAX_SHIFT	6

/*
 * VMEMMAP_SIZE - allows the whole linear region to be covered by
 *                a struct page array
 */
#define VMEMMAP_SIZE (UL(1) << (VA_BITS - PAGE_SHIFT - 1 + STRUCT_PAGE_MAX_SHIFT))

/*
 * PAGE_OFFSET - the virtual address of the start of the linear map (top
 *		 (VA_BITS - 1))
 * KIMAGE_VADDR - the virtual address of the start of the kernel image
 * VA_BITS - the maximum number of bits for virtual addresses.
 * VA_START - the first kernel virtual address.
 */
#define VA_BITS			(CONFIG_ARM64_VA_BITS)
#define VA_START		(UL(0xffffffffffffffff) - \
	(UL(1) << VA_BITS) + 1)
#define PAGE_OFFSET		(UL(0xffffffffffffffff) - \
	(UL(1) << (VA_BITS - 1)) + 1)
#define KIMAGE_VADDR		(MODULES_END)
#define MODULES_END		(MODULES_VADDR + MODULES_VSIZE)
#define MODULES_VADDR		(VA_START + KASAN_SHADOW_SIZE)
#define MODULES_VSIZE		(SZ_128M)
#define VMEMMAP_START		(PAGE_OFFSET - VMEMMAP_SIZE)
#define PCI_IO_END		(VMEMMAP_START - SZ_2M)
#define PCI_IO_START		(PCI_IO_END - PCI_IO_SIZE)
#define FIXADDR_TOP		(PCI_IO_START - SZ_2M)

#define KERNEL_START      _text
#define KERNEL_END        _end

/*
 * KASAN requires 1/8th of the kernel virtual address space for the shadow
 * region. KASAN can bloat the stack significantly, so double the (minimum)
 * stack size when KASAN is in use, and then double it again if KASAN_EXTRA is
 * on.
 */
#ifdef CONFIG_KASAN
#define KASAN_SHADOW_SIZE	(UL(1) << (VA_BITS - 3))
#ifdef CONFIG_KASAN_EXTRA
#define KASAN_THREAD_SHIFT	2
#else
#define KASAN_THREAD_SHIFT	1
#endif /* CONFIG_KASAN_EXTRA */
#else
#define KASAN_SHADOW_SIZE	(0)
#define KASAN_THREAD_SHIFT	0
#endif

#define MIN_THREAD_SHIFT	(14 + KASAN_THREAD_SHIFT)

/*
 * VMAP'd stacks are allocated at page granularity, so we must ensure that such
 * stacks are a multiple of page size.
 */
#if defined(CONFIG_VMAP_STACK) && (MIN_THREAD_SHIFT < PAGE_SHIFT)
#define THREAD_SHIFT		PAGE_SHIFT
#else
#define THREAD_SHIFT		MIN_THREAD_SHIFT
#endif

#if THREAD_SHIFT >= PAGE_SHIFT
#define THREAD_SIZE_ORDER	(THREAD_SHIFT - PAGE_SHIFT)
#endif

#define THREAD_SIZE		(UL(1) << THREAD_SHIFT)

/*
 * By aligning VMAP'd stacks to 2 * THREAD_SIZE, we can detect overflow by
 * checking sp & (1 << THREAD_SHIFT), which we can do cheaply in the entry
 * assembly.
 */
#ifdef CONFIG_VMAP_STACK
#define THREAD_ALIGN		(2 * THREAD_SIZE)
#else
#define THREAD_ALIGN		THREAD_SIZE
#endif

#define IRQ_STACK_SIZE		THREAD_SIZE

#define OVERFLOW_STACK_SIZE	SZ_4K

/*
 * Alignment of kernel segments (e.g. .text, .data).
 */
#if defined(CONFIG_DEBUG_ALIGN_RODATA)
/*
 *  4 KB granule:   1 level 2 entry
 * 16 KB granule: 128 level 3 entries, with contiguous bit
 * 64 KB granule:  32 level 3 entries, with contiguous bit
 */
#define SEGMENT_ALIGN			SZ_2M
#else
/*
 *  4 KB granule:  16 level 3 entries, with contiguous bit
 * 16 KB granule:   4 level 3 entries, without contiguous bit
 * 64 KB granule:   1 level 3 entry
 */
#define SEGMENT_ALIGN			SZ_64K
#endif

/*
 * Memory types available.
 */
#define MT_DEVICE_nGnRnE	0
#define MT_DEVICE_nGnRE		1
#define MT_DEVICE_GRE		2
#define MT_NORMAL_NC		3
#define MT_NORMAL		4
#define MT_NORMAL_WT		5

/*
 * Memory types for Stage-2 translation
 */
#define MT_S2_NORMAL		0xf
#define MT_S2_DEVICE_nGnRE	0x1

#ifdef CONFIG_ARM64_4K_PAGES
#define IOREMAP_MAX_ORDER	(PUD_SHIFT)
#else
#define IOREMAP_MAX_ORDER	(PMD_SHIFT)
#endif

#ifdef CONFIG_BLK_DEV_INITRD
#define __early_init_dt_declare_initrd(__start, __end)			\
	do {								\
		initrd_start = (__start);				\
		initrd_end = (__end);					\
	} while (0)
#endif

#ifndef __ASSEMBLY__

#include <linux/bitops.h>
#include <linux/mmdebug.h>

extern s64			memstart_addr;
/* PHYS_OFFSET - the physical address of the start of memory. */
#define PHYS_OFFSET		({ VM_BUG_ON(memstart_addr & 1); memstart_addr; })

/* the virtual base of the kernel image (minus TEXT_OFFSET) */
extern u64			kimage_vaddr;

/* the offset between the kernel virtual and physical mappings */
extern u64			kimage_voffset;

static inline unsigned long kaslr_offset(void)
{
	return kimage_vaddr - KIMAGE_VADDR;
}

/*
 * Allow all memory at the discovery stage. We will clip it later.
 */
#define MIN_MEMBLOCK_ADDR	0
#define MAX_MEMBLOCK_ADDR	U64_MAX

/*
 * PFNs are used to describe any physical page; this means
 * PFN 0 == physical address 0.
 *
 * This is the PFN of the first RAM page in the kernel
 * direct-mapped view.  We assume this is the first page
 * of RAM in the mem_map as well.
 */
#define PHYS_PFN_OFFSET	(PHYS_OFFSET >> PAGE_SHIFT)

/*
 * Physical vs virtual RAM address space conversion.  These are
 * private definitions which should NOT be used outside memory.h
 * files.  Use virt_to_phys/phys_to_virt/__pa/__va instead.
 */

/*
 * The linear kernel range starts in the middle of the virtual adddress
 * space. Testing the top bit for the start of the region is a
 * sufficient check.
 */
#define __is_lm_address(addr)	(!!((addr) & BIT(VA_BITS - 1)))

#define __lm_to_phys(addr)	(((addr) & ~PAGE_OFFSET) + PHYS_OFFSET)
#define __kimg_to_phys(addr)	((addr) - kimage_voffset)

#define __virt_to_phys_nodebug(x) ({					\
	phys_addr_t __x = (phys_addr_t)(x);				\
	__is_lm_address(__x) ? __lm_to_phys(__x) :			\
			       __kimg_to_phys(__x);			\
})

#define __pa_symbol_nodebug(x)	__kimg_to_phys((phys_addr_t)(x))

#ifdef CONFIG_DEBUG_VIRTUAL
extern phys_addr_t __virt_to_phys(unsigned long x);
extern phys_addr_t __phys_addr_symbol(unsigned long x);
#else
#define __virt_to_phys(x)	__virt_to_phys_nodebug(x)
#define __phys_addr_symbol(x)	__pa_symbol_nodebug(x)
#endif

#define __phys_to_virt(x)	((unsigned long)((x) - PHYS_OFFSET) | PAGE_OFFSET)
#define __phys_to_kimg(x)	((unsigned long)((x) + kimage_voffset))

/*
 * Convert a page to/from a physical address
 */
#define page_to_phys(page)	(__pfn_to_phys(page_to_pfn(page)))
#define phys_to_page(phys)	(pfn_to_page(__phys_to_pfn(phys)))

/*
 * Note: Drivers should NOT use these.  They are the wrong
 * translation for translating DMA addresses.  Use the driver
 * DMA support - see dma-mapping.h.
 */
#define virt_to_phys virt_to_phys
static inline phys_addr_t virt_to_phys(const volatile void *x)
{
	return __virt_to_phys((unsigned long)(x));
}

#define phys_to_virt phys_to_virt
static inline void *phys_to_virt(phys_addr_t x)
{
	return (void *)(__phys_to_virt(x));
}

/*
 * Drivers should NOT use these either.
 */
#define __pa(x)			__virt_to_phys((unsigned long)(x))
#define __pa_symbol(x)		__phys_addr_symbol(RELOC_HIDE((unsigned long)(x), 0))
#define __pa_nodebug(x)		__virt_to_phys_nodebug((unsigned long)(x))
#define __va(x)			((void *)__phys_to_virt((phys_addr_t)(x)))
#define pfn_to_kaddr(pfn)	__va((pfn) << PAGE_SHIFT)
#define virt_to_pfn(x)      __phys_to_pfn(__virt_to_phys((unsigned long)(x)))
#define sym_to_pfn(x)	    __phys_to_pfn(__pa_symbol(x))

/*
 *  virt_to_page(k)	convert a _valid_ virtual address to struct page *
 *  virt_addr_valid(k)	indicates whether a virtual address is valid
 */
#define ARCH_PFN_OFFSET		((unsigned long)PHYS_PFN_OFFSET)

#ifndef CONFIG_SPARSEMEM_VMEMMAP
#define virt_to_page(kaddr)	pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
#define _virt_addr_valid(kaddr)	pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
#else
#define __virt_to_pgoff(kaddr)	(((u64)(kaddr) & ~PAGE_OFFSET) / PAGE_SIZE * sizeof(struct page))
#define __page_to_voff(kaddr)	(((u64)(kaddr) & ~VMEMMAP_START) * PAGE_SIZE / sizeof(struct page))

#define page_to_virt(page)	((void *)((__page_to_voff(page)) | PAGE_OFFSET))
#define virt_to_page(vaddr)	((struct page *)((__virt_to_pgoff(vaddr)) | VMEMMAP_START))

#define _virt_addr_valid(kaddr)	pfn_valid((((u64)(kaddr) & ~PAGE_OFFSET) \
					   + PHYS_OFFSET) >> PAGE_SHIFT)
#endif
#endif

#define _virt_addr_is_linear(kaddr)	(((u64)(kaddr)) >= PAGE_OFFSET)
#define virt_addr_valid(kaddr)		(_virt_addr_is_linear(kaddr) && \
					 _virt_addr_valid(kaddr))

#include <asm-generic/memory_model.h>

#endif