FM / asm

/usr/src/linux-headers-5.15.0-190/arch/um/include/asm/

/usr/src/linux-headers-5.15.0-190/arch/um/include/asm

Name	Size	Mode	Actions
fpu/	-	0755	rm
archrandom.h	735	0644	edit dl rm
asm-prototypes.h	129	0644	edit dl rm
cache.h	483	0644	edit dl rm
cacheflush.h	257	0644	edit dl rm
common.lds.S	1679	0644	edit dl rm
cpufeature.h	5011	0644	edit dl rm
delay.h	670	0644	edit dl rm
dma.h	180	0644	edit dl rm
fixmap.h	1638	0644	edit dl rm
futex.h	353	0644	edit dl rm
hardirq.h	201	0644	edit dl rm
io.h	478	0644	edit dl rm
irq.h	828	0644	edit dl rm
irqflags.h	807	0644	edit dl rm
Kbuild	729	0644	edit dl rm
kvm_para.h	34	0644	edit dl rm
mmu.h	522	0644	edit dl rm
mmu_context.h	1174	0644	edit dl rm
msi.h	29	0644	edit dl rm
page.h	3239	0644	edit dl rm
pci.h	864	0644	edit dl rm
pgalloc.h	1034	0644	edit dl rm
pgtable-2level.h	1299	0644	edit dl rm
pgtable-3level.h	2645	0644	edit dl rm
pgtable.h	8831	0644	edit dl rm
processor-generic.h	2193	0644	edit dl rm
ptrace-generic.h	1187	0644	edit dl rm
sections.h	219	0644	edit dl rm
setup.h	273	0644	edit dl rm
smp.h	121	0644	edit dl rm
stacktrace.h	1088	0644	edit dl rm
syscall-generic.h	1974	0644	edit dl rm
sysrq.h	182	0644	edit dl rm
thread_info.h	2332	0644	edit dl rm
timex.h	151	0644	edit dl rm
tlb.h	192	0644	edit dl rm
tlbflush.h	991	0644	edit dl rm
uaccess.h	1471	0644	edit dl rm
unwind.h	213	0644	edit dl rm
vmalloc.h	84	0644	edit dl rm
vmlinux.lds.h	66	0644	edit dl rm
xor.h	639	0644	edit dl rm

Edit: /usr/src/linux-headers-5.15.0-190/arch/um/include/asm/fixmap.h (1638B)

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __UM_FIXMAP_H
#define __UM_FIXMAP_H

#include <asm/processor.h>
#include <asm/archparam.h>
#include <asm/page.h>
#include <linux/threads.h>

/*
 * Here we define all the compile-time 'special' virtual
 * addresses. The point is to have a constant address at
 * compile time, but to set the physical address only
 * in the boot process. We allocate these special  addresses
 * from the end of virtual memory (0xfffff000) backwards.
 * Also this lets us do fail-safe vmalloc(), we
 * can guarantee that these special addresses and
 * vmalloc()-ed addresses never overlap.
 *
 * these 'compile-time allocated' memory buffers are
 * fixed-size 4k pages. (or larger if used with an increment
 * highger than 1) use fixmap_set(idx,phys) to associate
 * physical memory with fixmap indices.
 *
 * TLB entries of such buffers will not be flushed across
 * task switches.
 */

/*
 * on UP currently we will have no trace of the fixmap mechanizm,
 * no page table allocations, etc. This might change in the
 * future, say framebuffers for the console driver(s) could be
 * fix-mapped?
 */
enum fixed_addresses {
	__end_of_fixed_addresses
};

extern void __set_fixmap (enum fixed_addresses idx,
			  unsigned long phys, pgprot_t flags);

/*
 * used by vmalloc.c.
 *
 * Leave one empty page between vmalloc'ed areas and
 * the start of the fixmap, and leave one page empty
 * at the top of mem..
 */

#define FIXADDR_TOP	(TASK_SIZE - 2 * PAGE_SIZE)
#define FIXADDR_SIZE	(__end_of_fixed_addresses << PAGE_SHIFT)
#define FIXADDR_START	(FIXADDR_TOP - FIXADDR_SIZE)

#include <asm-generic/fixmap.h>

#endif

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