FM / asm

/usr/src/linux-headers-5.15.0-181/arch/arm64/include/asm/

/usr/src/linux-headers-5.15.0-181/arch/arm64/include/asm

Name	Size	Mode	Actions
vdso/	-	0755	rm
xen/	-	0755	rm
acenv.h	395	0644	edit dl rm
acpi.h	4942	0644	edit dl rm
alternative-macros.h	5537	0644	edit dl rm
alternative.h	1013	0644	edit dl rm
archrandom.h	3121	0644	edit dl rm
arch_gicv3.h	4055	0644	edit dl rm
arch_timer.h	4631	0644	edit dl rm
arm-cci.h	254	0644	edit dl rm
arm_dsu_pmu.h	3007	0644	edit dl rm
asm-bug.h	952	0644	edit dl rm
asm-offsets.h	35	0644	edit dl rm
asm-prototypes.h	958	0644	edit dl rm
asm-uaccess.h	2296	0644	edit dl rm
asm_pointer_auth.h	2432	0644	edit dl rm
assembler.h	21164	0644	edit dl rm
atomic.h	8618	0644	edit dl rm
atomic_ll_sc.h	10254	0644	edit dl rm
atomic_lse.h	11233	0644	edit dl rm
barrier.h	5429	0644	edit dl rm
bitops.h	850	0644	edit dl rm
bitrev.h	452	0644	edit dl rm
boot.h	369	0644	edit dl rm
brk-imm.h	889	0644	edit dl rm
bug.h	572	0644	edit dl rm
cache.h	3248	0644	edit dl rm
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checksum.h	1088	0644	edit dl rm
clocksource.h	136	0644	edit dl rm
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compat.h	3919	0644	edit dl rm
compiler.h	1309	0644	edit dl rm
cpu.h	1520	0644	edit dl rm
cpufeature.h	29001	0644	edit dl rm
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cpu_ops.h	2409	0644	edit dl rm
current.h	517	0644	edit dl rm
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device.h	189	0644	edit dl rm
dmi.h	850	0644	edit dl rm
efi.h	4494	0644	edit dl rm
el2_setup.h	5363	0644	edit dl rm
elf.h	8196	0644	edit dl rm
esr.h	12549	0644	edit dl rm
exception.h	3015	0644	edit dl rm
exec.h	278	0644	edit dl rm
extable.h	1127	0644	edit dl rm
fb.h	460	0644	edit dl rm
fixmap.h	3099	0644	edit dl rm
fpsimd.h	5490	0644	edit dl rm
fpsimdmacros.h	6004	0644	edit dl rm
ftrace.h	2962	0644	edit dl rm
futex.h	2953	0644	edit dl rm
hardirq.h	2335	0644	edit dl rm
hugetlb.h	1920	0644	edit dl rm
hwcap.h	5207	0644	edit dl rm
hw_breakpoint.h	4091	0644	edit dl rm
hyperv-tlfs.h	2077	0644	edit dl rm
hypervisor.h	228	0644	edit dl rm
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image.h	1509	0644	edit dl rm
insn-def.h	571	0644	edit dl rm
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io.h	6631	0644	edit dl rm
irq.h	395	0644	edit dl rm
irqflags.h	2933	0644	edit dl rm
irq_work.h	192	0644	edit dl rm
jump_label.h	1195	0644	edit dl rm
kasan.h	1568	0644	edit dl rm
Kbuild	186	0644	edit dl rm
kernel-pgtable.h	5023	0644	edit dl rm
kexec.h	2795	0644	edit dl rm
kfence.h	410	0644	edit dl rm
kgdb.h	3346	0644	edit dl rm
kprobes.h	1063	0644	edit dl rm
kvm_arm.h	12619	0644	edit dl rm
kvm_asm.h	9921	0644	edit dl rm
kvm_emulate.h	12462	0644	edit dl rm
kvm_host.h	25912	0644	edit dl rm
kvm_hyp.h	4389	0644	edit dl rm
kvm_mmu.h	8874	0644	edit dl rm
kvm_mte.h	1378	0644	edit dl rm
kvm_pgtable.h	19676	0644	edit dl rm
kvm_ptrauth.h	3543	0644	edit dl rm
kvm_ras.h	603	0644	edit dl rm
kvm_types.h	185	0644	edit dl rm
linkage.h	1751	0644	edit dl rm
lse.h	1267	0644	edit dl rm
memory.h	11838	0644	edit dl rm
mman.h	2699	0644	edit dl rm
mmu.h	2476	0644	edit dl rm
mmu_context.h	6944	0644	edit dl rm
mmzone.h	266	0644	edit dl rm
module.h	1810	0644	edit dl rm
module.lds.h	646	0644	edit dl rm
mshyperv.h	1387	0644	edit dl rm
mte-def.h	505	0644	edit dl rm
mte-kasan.h	3640	0644	edit dl rm
mte.h	3426	0644	edit dl rm
neon-intrinsics.h	959	0644	edit dl rm
neon.h	385	0644	edit dl rm
numa.h	165	0644	edit dl rm
page-def.h	441	0644	edit dl rm
page.h	1365	0644	edit dl rm
paravirt.h	580	0644	edit dl rm
patching.h	370	0644	edit dl rm
pci.h	764	0644	edit dl rm
percpu.h	8175	0644	edit dl rm
perf_event.h	10785	0644	edit dl rm
pgalloc.h	2269	0644	edit dl rm
pgtable-hwdef.h	10167	0644	edit dl rm
pgtable-prot.h	4302	0644	edit dl rm
pgtable-types.h	1305	0644	edit dl rm
pgtable.h	29965	0644	edit dl rm
pointer_auth.h	4651	0644	edit dl rm
preempt.h	2366	0644	edit dl rm
probes.h	650	0644	edit dl rm
proc-fns.h	562	0644	edit dl rm
processor.h	10002	0644	edit dl rm
ptdump.h	889	0644	edit dl rm
ptrace.h	10539	0644	edit dl rm
pvclock-abi.h	374	0644	edit dl rm
rwonce.h	2009	0644	edit dl rm
scs.h	497	0644	edit dl rm
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seccomp.h	870	0644	edit dl rm
sections.h	1099	0644	edit dl rm
setup.h	195	0644	edit dl rm
set_memory.h	487	0644	edit dl rm
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signal.h	650	0644	edit dl rm
signal32.h	1980	0644	edit dl rm
simd.h	1488	0644	edit dl rm
smp.h	3955	0644	edit dl rm
smp_plat.h	824	0644	edit dl rm
sparsemem.h	682	0644	edit dl rm
spectre.h	3000	0644	edit dl rm
spinlock.h	601	0644	edit dl rm
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stackprotector.h	1359	0644	edit dl rm
stacktrace.h	4314	0644	edit dl rm
stack_pointer.h	247	0644	edit dl rm
stage2_pgtable.h	1058	0644	edit dl rm
stat.h	947	0644	edit dl rm
string.h	1972	0644	edit dl rm
suspend.h	1694	0644	edit dl rm
sync_bitops.h	1085	0644	edit dl rm
syscall.h	2146	0644	edit dl rm
syscall_wrapper.h	3120	0644	edit dl rm
sysreg.h	45773	0644	edit dl rm
system_misc.h	880	0644	edit dl rm
thread_info.h	3887	0644	edit dl rm
timex.h	343	0644	edit dl rm
tlb.h	2332	0644	edit dl rm
tlbflush.h	11891	0644	edit dl rm
topology.h	1203	0644	edit dl rm
trans_pgd.h	1036	0644	edit dl rm
traps.h	2909	0644	edit dl rm
uaccess.h	13718	0644	edit dl rm
unistd.h	1361	0644	edit dl rm
unistd32.h	31568	0644	edit dl rm
uprobes.h	579	0644	edit dl rm
vdso.h	631	0644	edit dl rm
vectors.h	1775	0644	edit dl rm
vermagic.h	200	0644	edit dl rm
virt.h	3569	0644	edit dl rm
vmalloc.h	694	0644	edit dl rm
vmap_stack.h	703	0644	edit dl rm
word-at-a-time.h	1797	0644	edit dl rm
xor.h	1668	0644	edit dl rm

Edit: /usr/src/linux-headers-5.15.0-181/arch/arm64/include/asm/memory.h (11838B)

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Based on arch/arm/include/asm/memory.h
 *
 * Copyright (C) 2000-2002 Russell King
 * Copyright (C) 2012 ARM Ltd.
 *
 * Note: this file should not be included by non-asm/.h files
 */
#ifndef __ASM_MEMORY_H
#define __ASM_MEMORY_H

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

/*
 * VMEMMAP_SIZE - allows the whole linear region to be covered by
 *                a struct page array
 *
 * If we are configured with a 52-bit kernel VA then our VMEMMAP_SIZE
 * needs to cover the memory region from the beginning of the 52-bit
 * PAGE_OFFSET all the way to PAGE_END for 48-bit. This allows us to
 * keep a constant PAGE_OFFSET and "fallback" to using the higher end
 * of the VMEMMAP where 52-bit support is not available in hardware.
 */
#define VMEMMAP_SHIFT	(PAGE_SHIFT - STRUCT_PAGE_MAX_SHIFT)
#define VMEMMAP_SIZE	((_PAGE_END(VA_BITS_MIN) - PAGE_OFFSET) >> VMEMMAP_SHIFT)

/*
 * PAGE_OFFSET - the virtual address of the start of the linear map, at the
 *               start of the TTBR1 address space.
 * PAGE_END - the end of the linear map, where all other kernel mappings begin.
 * KIMAGE_VADDR - the virtual address of the start of the kernel image.
 * VA_BITS - the maximum number of bits for virtual addresses.
 */
#define VA_BITS			(CONFIG_ARM64_VA_BITS)
#define _PAGE_OFFSET(va)	(-(UL(1) << (va)))
#define PAGE_OFFSET		(_PAGE_OFFSET(VA_BITS))
#define KIMAGE_VADDR		(MODULES_END)
#define MODULES_END		(MODULES_VADDR + MODULES_VSIZE)
#define MODULES_VADDR		(_PAGE_END(VA_BITS_MIN))
#define MODULES_VSIZE		(SZ_128M)
#define VMEMMAP_START		(-(UL(1) << (VA_BITS - VMEMMAP_SHIFT)))
#define VMEMMAP_END		(VMEMMAP_START + VMEMMAP_SIZE)
#define PCI_IO_END		(VMEMMAP_START - SZ_8M)
#define PCI_IO_START		(PCI_IO_END - PCI_IO_SIZE)
#define FIXADDR_TOP		(VMEMMAP_START - SZ_32M)

#if VA_BITS > 48
#define VA_BITS_MIN		(48)
#else
#define VA_BITS_MIN		(VA_BITS)
#endif

#define _PAGE_END(va)		(-(UL(1) << ((va) - 1)))

#define KERNEL_START		_text
#define KERNEL_END		_end

/*
 * Generic and tag-based KASAN require 1/8th and 1/16th of the kernel virtual
 * address space for the shadow region respectively. They can bloat the stack
 * significantly, so double the (minimum) stack size when they are in use.
 */
#if defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS)
#define KASAN_SHADOW_OFFSET	_AC(CONFIG_KASAN_SHADOW_OFFSET, UL)
#define KASAN_SHADOW_END	((UL(1) << (64 - KASAN_SHADOW_SCALE_SHIFT)) \
					+ KASAN_SHADOW_OFFSET)
#define PAGE_END		(KASAN_SHADOW_END - (1UL << (vabits_actual - KASAN_SHADOW_SCALE_SHIFT)))
#define KASAN_THREAD_SHIFT	1
#else
#define KASAN_THREAD_SHIFT	0
#define PAGE_END		(_PAGE_END(VA_BITS_MIN))
#endif /* CONFIG_KASAN */

#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).
 *
 *  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

/*
 * Memory types available.
 *
 * IMPORTANT: MT_NORMAL must be index 0 since vm_get_page_prot() may 'or' in
 *	      the MT_NORMAL_TAGGED memory type for PROT_MTE mappings. Note
 *	      that protection_map[] only contains MT_NORMAL attributes.
 */
#define MT_NORMAL		0
#define MT_NORMAL_TAGGED	1
#define MT_NORMAL_NC		2
#define MT_DEVICE_nGnRnE	3
#define MT_DEVICE_nGnRE		4

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

/*
 * Memory types for Stage-2 translation when ID_AA64MMFR2_EL1.FWB is 0001
 * Stage-2 enforces Normal-WB and Device-nGnRE
 */
#define MT_S2_FWB_NORMAL	6
#define MT_S2_FWB_DEVICE_nGnRE	1

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

/*
 *  Open-coded (swapper_pg_dir - reserved_pg_dir) as this cannot be calculated
 *  until link time.
 */
#define RESERVED_SWAPPER_OFFSET	(PAGE_SIZE)

/*
 *  Open-coded (swapper_pg_dir - tramp_pg_dir) as this cannot be calculated
 *  until link time.
 */
#define TRAMP_SWAPPER_OFFSET	(2 * PAGE_SIZE)

#ifndef __ASSEMBLY__

#include <linux/bitops.h>
#include <linux/compiler.h>
#include <linux/mmdebug.h>
#include <linux/types.h>
#include <asm/bug.h>

extern u64			vabits_actual;

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 */
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)

/*
 * When dealing with data aborts, watchpoints, or instruction traps we may end
 * up with a tagged userland pointer. Clear the tag to get a sane pointer to
 * pass on to access_ok(), for instance.
 */
#define __untagged_addr(addr)	\
	((__force __typeof__(addr))sign_extend64((__force u64)(addr), 55))

#define untagged_addr(addr)	({					\
	u64 __addr = (__force u64)(addr);					\
	__addr &= __untagged_addr(__addr);				\
	(__force __typeof__(addr))__addr;				\
})

#if defined(CONFIG_KASAN_SW_TAGS) || defined(CONFIG_KASAN_HW_TAGS)
#define __tag_shifted(tag)	((u64)(tag) << 56)
#define __tag_reset(addr)	__untagged_addr(addr)
#define __tag_get(addr)		(__u8)((u64)(addr) >> 56)
#else
#define __tag_shifted(tag)	0UL
#define __tag_reset(addr)	(addr)
#define __tag_get(addr)		0
#endif /* CONFIG_KASAN_SW_TAGS || CONFIG_KASAN_HW_TAGS */

static inline const void *__tag_set(const void *addr, u8 tag)
{
	u64 __addr = (u64)addr & ~__tag_shifted(0xff);
	return (const void *)(__addr | __tag_shifted(tag));
}

#ifdef CONFIG_KASAN_HW_TAGS
#define arch_enable_tagging_sync()		mte_enable_kernel_sync()
#define arch_enable_tagging_async()		mte_enable_kernel_async()
#define arch_force_async_tag_fault()		mte_check_tfsr_exit()
#define arch_get_random_tag()			mte_get_random_tag()
#define arch_get_mem_tag(addr)			mte_get_mem_tag(addr)
#define arch_set_mem_tag_range(addr, size, tag, init)	\
			mte_set_mem_tag_range((addr), (size), (tag), (init))
#endif /* CONFIG_KASAN_HW_TAGS */

/*
 * 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.
 */

/*
 * Check whether an arbitrary address is within the linear map, which
 * lives in the [PAGE_OFFSET, PAGE_END) interval at the bottom of the
 * kernel's TTBR1 address range.
 */
#define __is_lm_address(addr)	(((u64)(addr) - PAGE_OFFSET) < (PAGE_END - PAGE_OFFSET))

#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)(__tag_reset(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 /* CONFIG_DEBUG_VIRTUAL */

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

#if defined(CONFIG_DEBUG_VIRTUAL)
#define page_to_virt(x)	({						\
	__typeof__(x) __page = x;					\
	void *__addr = __va(page_to_phys(__page));			\
	(void *)__tag_set((const void *)__addr, page_kasan_tag(__page));\
})
#define virt_to_page(x)		pfn_to_page(virt_to_pfn(x))
#else
#define page_to_virt(x)	({						\
	__typeof__(x) __page = x;					\
	u64 __idx = ((u64)__page - VMEMMAP_START) / sizeof(struct page);\
	u64 __addr = PAGE_OFFSET + (__idx * PAGE_SIZE);			\
	(void *)__tag_set((const void *)__addr, page_kasan_tag(__page));\
})

#define virt_to_page(x)	({						\
	u64 __idx = (__tag_reset((u64)x) - PAGE_OFFSET) / PAGE_SIZE;	\
	u64 __addr = VMEMMAP_START + (__idx * sizeof(struct page));	\
	(struct page *)__addr;						\
})
#endif /* CONFIG_DEBUG_VIRTUAL */

#define virt_addr_valid(addr)	({					\
	__typeof__(addr) __addr = __tag_reset(addr);			\
	__is_lm_address(__addr) && pfn_is_map_memory(virt_to_pfn(__addr));	\
})

void dump_mem_limit(void);

static inline bool defer_reserve_crashkernel(void)
{
	return IS_ENABLED(CONFIG_ZONE_DMA) || IS_ENABLED(CONFIG_ZONE_DMA32);
}
#endif /* !ASSEMBLY */

/*
 * Given that the GIC architecture permits ITS implementations that can only be
 * configured with a LPI table address once, GICv3 systems with many CPUs may
 * end up reserving a lot of different regions after a kexec for their LPI
 * tables (one per CPU), as we are forced to reuse the same memory after kexec
 * (and thus reserve it persistently with EFI beforehand)
 */
#if defined(CONFIG_EFI) && defined(CONFIG_ARM_GIC_V3_ITS)
# define INIT_MEMBLOCK_RESERVED_REGIONS	(INIT_MEMBLOCK_REGIONS + NR_CPUS + 1)
#endif

#include <asm-generic/memory_model.h>

#endif /* __ASM_MEMORY_H */

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