472 lines
12 KiB
C
472 lines
12 KiB
C
|
// SPDX-License-Identifier: GPL-2.0-only
|
||
|
|
/*
|
||
|
|
* Debug helper to dump the current kernel pagetables of the system
|
||
|
|
* so that we can see what the various memory ranges are set to.
|
||
|
|
*
|
||
|
|
* (C) Copyright 2008 Intel Corporation
|
||
|
|
*
|
||
|
|
* Author: Arjan van de Ven <arjan@linux.intel.com>
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/debugfs.h>
|
||
|
|
#include <linux/kasan.h>
|
||
|
|
#include <linux/mm.h>
|
||
|
|
#include <linux/init.h>
|
||
|
|
#include <linux/sched.h>
|
||
|
|
#include <linux/seq_file.h>
|
||
|
|
#include <linux/highmem.h>
|
||
|
|
#include <linux/pci.h>
|
||
|
|
#include <linux/ptdump.h>
|
||
|
|
|
||
|
|
#include <asm/e820/types.h>
|
||
|
|
|
||
|
|
/*
|
||
|
|
* The dumper groups pagetable entries of the same type into one, and for
|
||
|
|
* that it needs to keep some state when walking, and flush this state
|
||
|
|
* when a "break" in the continuity is found.
|
||
|
|
*/
|
||
|
|
struct pg_state {
|
||
|
|
struct ptdump_state ptdump;
|
||
|
|
int level;
|
||
|
|
pgprotval_t current_prot;
|
||
|
|
pgprotval_t effective_prot;
|
||
|
|
pgprotval_t prot_levels[5];
|
||
|
|
unsigned long start_address;
|
||
|
|
const struct addr_marker *marker;
|
||
|
|
unsigned long lines;
|
||
|
|
bool to_dmesg;
|
||
|
|
bool check_wx;
|
||
|
|
unsigned long wx_pages;
|
||
|
|
struct seq_file *seq;
|
||
|
|
};
|
||
|
|
|
||
|
|
struct addr_marker {
|
||
|
|
unsigned long start_address;
|
||
|
|
const char *name;
|
||
|
|
unsigned long max_lines;
|
||
|
|
};
|
||
|
|
|
||
|
|
/* Address space markers hints */
|
||
|
|
|
||
|
|
#ifdef CONFIG_X86_64
|
||
|
|
|
||
|
|
enum address_markers_idx {
|
||
|
|
USER_SPACE_NR = 0,
|
||
|
|
KERNEL_SPACE_NR,
|
||
|
|
#ifdef CONFIG_MODIFY_LDT_SYSCALL
|
||
|
|
LDT_NR,
|
||
|
|
#endif
|
||
|
|
LOW_KERNEL_NR,
|
||
|
|
VMALLOC_START_NR,
|
||
|
|
VMEMMAP_START_NR,
|
||
|
|
#ifdef CONFIG_KASAN
|
||
|
|
KASAN_SHADOW_START_NR,
|
||
|
|
KASAN_SHADOW_END_NR,
|
||
|
|
#endif
|
||
|
|
CPU_ENTRY_AREA_NR,
|
||
|
|
#ifdef CONFIG_X86_ESPFIX64
|
||
|
|
ESPFIX_START_NR,
|
||
|
|
#endif
|
||
|
|
#ifdef CONFIG_EFI
|
||
|
|
EFI_END_NR,
|
||
|
|
#endif
|
||
|
|
HIGH_KERNEL_NR,
|
||
|
|
MODULES_VADDR_NR,
|
||
|
|
MODULES_END_NR,
|
||
|
|
FIXADDR_START_NR,
|
||
|
|
END_OF_SPACE_NR,
|
||
|
|
};
|
||
|
|
|
||
|
|
static struct addr_marker address_markers[] = {
|
||
|
|
[USER_SPACE_NR] = { 0, "User Space" },
|
||
|
|
[KERNEL_SPACE_NR] = { (1UL << 63), "Kernel Space" },
|
||
|
|
[LOW_KERNEL_NR] = { 0UL, "Low Kernel Mapping" },
|
||
|
|
[VMALLOC_START_NR] = { 0UL, "vmalloc() Area" },
|
||
|
|
[VMEMMAP_START_NR] = { 0UL, "Vmemmap" },
|
||
|
|
#ifdef CONFIG_KASAN
|
||
|
|
/*
|
||
|
|
* These fields get initialized with the (dynamic)
|
||
|
|
* KASAN_SHADOW_{START,END} values in pt_dump_init().
|
||
|
|
*/
|
||
|
|
[KASAN_SHADOW_START_NR] = { 0UL, "KASAN shadow" },
|
||
|
|
[KASAN_SHADOW_END_NR] = { 0UL, "KASAN shadow end" },
|
||
|
|
#endif
|
||
|
|
#ifdef CONFIG_MODIFY_LDT_SYSCALL
|
||
|
|
[LDT_NR] = { 0UL, "LDT remap" },
|
||
|
|
#endif
|
||
|
|
[CPU_ENTRY_AREA_NR] = { CPU_ENTRY_AREA_BASE,"CPU entry Area" },
|
||
|
|
#ifdef CONFIG_X86_ESPFIX64
|
||
|
|
[ESPFIX_START_NR] = { ESPFIX_BASE_ADDR, "ESPfix Area", 16 },
|
||
|
|
#endif
|
||
|
|
#ifdef CONFIG_EFI
|
||
|
|
[EFI_END_NR] = { EFI_VA_END, "EFI Runtime Services" },
|
||
|
|
#endif
|
||
|
|
[HIGH_KERNEL_NR] = { __START_KERNEL_map, "High Kernel Mapping" },
|
||
|
|
[MODULES_VADDR_NR] = { MODULES_VADDR, "Modules" },
|
||
|
|
[MODULES_END_NR] = { MODULES_END, "End Modules" },
|
||
|
|
[FIXADDR_START_NR] = { FIXADDR_START, "Fixmap Area" },
|
||
|
|
[END_OF_SPACE_NR] = { -1, NULL }
|
||
|
|
};
|
||
|
|
|
||
|
|
#define INIT_PGD ((pgd_t *) &init_top_pgt)
|
||
|
|
|
||
|
|
#else /* CONFIG_X86_64 */
|
||
|
|
|
||
|
|
enum address_markers_idx {
|
||
|
|
USER_SPACE_NR = 0,
|
||
|
|
KERNEL_SPACE_NR,
|
||
|
|
VMALLOC_START_NR,
|
||
|
|
VMALLOC_END_NR,
|
||
|
|
#ifdef CONFIG_HIGHMEM
|
||
|
|
PKMAP_BASE_NR,
|
||
|
|
#endif
|
||
|
|
#ifdef CONFIG_MODIFY_LDT_SYSCALL
|
||
|
|
LDT_NR,
|
||
|
|
#endif
|
||
|
|
CPU_ENTRY_AREA_NR,
|
||
|
|
FIXADDR_START_NR,
|
||
|
|
END_OF_SPACE_NR,
|
||
|
|
};
|
||
|
|
|
||
|
|
static struct addr_marker address_markers[] = {
|
||
|
|
[USER_SPACE_NR] = { 0, "User Space" },
|
||
|
|
[KERNEL_SPACE_NR] = { PAGE_OFFSET, "Kernel Mapping" },
|
||
|
|
[VMALLOC_START_NR] = { 0UL, "vmalloc() Area" },
|
||
|
|
[VMALLOC_END_NR] = { 0UL, "vmalloc() End" },
|
||
|
|
#ifdef CONFIG_HIGHMEM
|
||
|
|
[PKMAP_BASE_NR] = { 0UL, "Persistent kmap() Area" },
|
||
|
|
#endif
|
||
|
|
#ifdef CONFIG_MODIFY_LDT_SYSCALL
|
||
|
|
[LDT_NR] = { 0UL, "LDT remap" },
|
||
|
|
#endif
|
||
|
|
[CPU_ENTRY_AREA_NR] = { 0UL, "CPU entry area" },
|
||
|
|
[FIXADDR_START_NR] = { 0UL, "Fixmap area" },
|
||
|
|
[END_OF_SPACE_NR] = { -1, NULL }
|
||
|
|
};
|
||
|
|
|
||
|
|
#define INIT_PGD (swapper_pg_dir)
|
||
|
|
|
||
|
|
#endif /* !CONFIG_X86_64 */
|
||
|
|
|
||
|
|
/* Multipliers for offsets within the PTEs */
|
||
|
|
#define PTE_LEVEL_MULT (PAGE_SIZE)
|
||
|
|
#define PMD_LEVEL_MULT (PTRS_PER_PTE * PTE_LEVEL_MULT)
|
||
|
|
#define PUD_LEVEL_MULT (PTRS_PER_PMD * PMD_LEVEL_MULT)
|
||
|
|
#define P4D_LEVEL_MULT (PTRS_PER_PUD * PUD_LEVEL_MULT)
|
||
|
|
#define PGD_LEVEL_MULT (PTRS_PER_P4D * P4D_LEVEL_MULT)
|
||
|
|
|
||
|
|
#define pt_dump_seq_printf(m, to_dmesg, fmt, args...) \
|
||
|
|
({ \
|
||
|
|
if (to_dmesg) \
|
||
|
|
printk(KERN_INFO fmt, ##args); \
|
||
|
|
else \
|
||
|
|
if (m) \
|
||
|
|
seq_printf(m, fmt, ##args); \
|
||
|
|
})
|
||
|
|
|
||
|
|
#define pt_dump_cont_printf(m, to_dmesg, fmt, args...) \
|
||
|
|
({ \
|
||
|
|
if (to_dmesg) \
|
||
|
|
printk(KERN_CONT fmt, ##args); \
|
||
|
|
else \
|
||
|
|
if (m) \
|
||
|
|
seq_printf(m, fmt, ##args); \
|
||
|
|
})
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Print a readable form of a pgprot_t to the seq_file
|
||
|
|
*/
|
||
|
|
static void printk_prot(struct seq_file *m, pgprotval_t pr, int level, bool dmsg)
|
||
|
|
{
|
||
|
|
static const char * const level_name[] =
|
||
|
|
{ "pgd", "p4d", "pud", "pmd", "pte" };
|
||
|
|
|
||
|
|
if (!(pr & _PAGE_PRESENT)) {
|
||
|
|
/* Not present */
|
||
|
|
pt_dump_cont_printf(m, dmsg, " ");
|
||
|
|
} else {
|
||
|
|
if (pr & _PAGE_USER)
|
||
|
|
pt_dump_cont_printf(m, dmsg, "USR ");
|
||
|
|
else
|
||
|
|
pt_dump_cont_printf(m, dmsg, " ");
|
||
|
|
if (pr & _PAGE_RW)
|
||
|
|
pt_dump_cont_printf(m, dmsg, "RW ");
|
||
|
|
else
|
||
|
|
pt_dump_cont_printf(m, dmsg, "ro ");
|
||
|
|
if (pr & _PAGE_PWT)
|
||
|
|
pt_dump_cont_printf(m, dmsg, "PWT ");
|
||
|
|
else
|
||
|
|
pt_dump_cont_printf(m, dmsg, " ");
|
||
|
|
if (pr & _PAGE_PCD)
|
||
|
|
pt_dump_cont_printf(m, dmsg, "PCD ");
|
||
|
|
else
|
||
|
|
pt_dump_cont_printf(m, dmsg, " ");
|
||
|
|
|
||
|
|
/* Bit 7 has a different meaning on level 3 vs 4 */
|
||
|
|
if (level <= 3 && pr & _PAGE_PSE)
|
||
|
|
pt_dump_cont_printf(m, dmsg, "PSE ");
|
||
|
|
else
|
||
|
|
pt_dump_cont_printf(m, dmsg, " ");
|
||
|
|
if ((level == 4 && pr & _PAGE_PAT) ||
|
||
|
|
((level == 3 || level == 2) && pr & _PAGE_PAT_LARGE))
|
||
|
|
pt_dump_cont_printf(m, dmsg, "PAT ");
|
||
|
|
else
|
||
|
|
pt_dump_cont_printf(m, dmsg, " ");
|
||
|
|
if (pr & _PAGE_GLOBAL)
|
||
|
|
pt_dump_cont_printf(m, dmsg, "GLB ");
|
||
|
|
else
|
||
|
|
pt_dump_cont_printf(m, dmsg, " ");
|
||
|
|
if (pr & _PAGE_NX)
|
||
|
|
pt_dump_cont_printf(m, dmsg, "NX ");
|
||
|
|
else
|
||
|
|
pt_dump_cont_printf(m, dmsg, "x ");
|
||
|
|
}
|
||
|
|
pt_dump_cont_printf(m, dmsg, "%s\n", level_name[level]);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void note_wx(struct pg_state *st, unsigned long addr)
|
||
|
|
{
|
||
|
|
unsigned long npages;
|
||
|
|
|
||
|
|
npages = (addr - st->start_address) / PAGE_SIZE;
|
||
|
|
|
||
|
|
#ifdef CONFIG_PCI_BIOS
|
||
|
|
/*
|
||
|
|
* If PCI BIOS is enabled, the PCI BIOS area is forced to WX.
|
||
|
|
* Inform about it, but avoid the warning.
|
||
|
|
*/
|
||
|
|
if (pcibios_enabled && st->start_address >= PAGE_OFFSET + BIOS_BEGIN &&
|
||
|
|
addr <= PAGE_OFFSET + BIOS_END) {
|
||
|
|
pr_warn_once("x86/mm: PCI BIOS W+X mapping %lu pages\n", npages);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
/* Account the WX pages */
|
||
|
|
st->wx_pages += npages;
|
||
|
|
WARN_ONCE(__supported_pte_mask & _PAGE_NX,
|
||
|
|
"x86/mm: Found insecure W+X mapping at address %pS\n",
|
||
|
|
(void *)st->start_address);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void effective_prot(struct ptdump_state *pt_st, int level, u64 val)
|
||
|
|
{
|
||
|
|
struct pg_state *st = container_of(pt_st, struct pg_state, ptdump);
|
||
|
|
pgprotval_t prot = val & PTE_FLAGS_MASK;
|
||
|
|
pgprotval_t effective;
|
||
|
|
|
||
|
|
if (level > 0) {
|
||
|
|
pgprotval_t higher_prot = st->prot_levels[level - 1];
|
||
|
|
|
||
|
|
effective = (higher_prot & prot & (_PAGE_USER | _PAGE_RW)) |
|
||
|
|
((higher_prot | prot) & _PAGE_NX);
|
||
|
|
} else {
|
||
|
|
effective = prot;
|
||
|
|
}
|
||
|
|
|
||
|
|
st->prot_levels[level] = effective;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* This function gets called on a break in a continuous series
|
||
|
|
* of PTE entries; the next one is different so we need to
|
||
|
|
* print what we collected so far.
|
||
|
|
*/
|
||
|
|
static void note_page(struct ptdump_state *pt_st, unsigned long addr, int level,
|
||
|
|
u64 val)
|
||
|
|
{
|
||
|
|
struct pg_state *st = container_of(pt_st, struct pg_state, ptdump);
|
||
|
|
pgprotval_t new_prot, new_eff;
|
||
|
|
pgprotval_t cur, eff;
|
||
|
|
static const char units[] = "BKMGTPE";
|
||
|
|
struct seq_file *m = st->seq;
|
||
|
|
|
||
|
|
new_prot = val & PTE_FLAGS_MASK;
|
||
|
|
if (!val)
|
||
|
|
new_eff = 0;
|
||
|
|
else
|
||
|
|
new_eff = st->prot_levels[level];
|
||
|
|
|
||
|
|
/*
|
||
|
|
* If we have a "break" in the series, we need to flush the state that
|
||
|
|
* we have now. "break" is either changing perms, levels or
|
||
|
|
* address space marker.
|
||
|
|
*/
|
||
|
|
cur = st->current_prot;
|
||
|
|
eff = st->effective_prot;
|
||
|
|
|
||
|
|
if (st->level == -1) {
|
||
|
|
/* First entry */
|
||
|
|
st->current_prot = new_prot;
|
||
|
|
st->effective_prot = new_eff;
|
||
|
|
st->level = level;
|
||
|
|
st->marker = address_markers;
|
||
|
|
st->lines = 0;
|
||
|
|
pt_dump_seq_printf(m, st->to_dmesg, "---[ %s ]---\n",
|
||
|
|
st->marker->name);
|
||
|
|
} else if (new_prot != cur || new_eff != eff || level != st->level ||
|
||
|
|
addr >= st->marker[1].start_address) {
|
||
|
|
const char *unit = units;
|
||
|
|
unsigned long delta;
|
||
|
|
int width = sizeof(unsigned long) * 2;
|
||
|
|
|
||
|
|
if (st->check_wx && (eff & _PAGE_RW) && !(eff & _PAGE_NX))
|
||
|
|
note_wx(st, addr);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Now print the actual finished series
|
||
|
|
*/
|
||
|
|
if (!st->marker->max_lines ||
|
||
|
|
st->lines < st->marker->max_lines) {
|
||
|
|
pt_dump_seq_printf(m, st->to_dmesg,
|
||
|
|
"0x%0*lx-0x%0*lx ",
|
||
|
|
width, st->start_address,
|
||
|
|
width, addr);
|
||
|
|
|
||
|
|
delta = addr - st->start_address;
|
||
|
|
while (!(delta & 1023) && unit[1]) {
|
||
|
|
delta >>= 10;
|
||
|
|
unit++;
|
||
|
|
}
|
||
|
|
pt_dump_cont_printf(m, st->to_dmesg, "%9lu%c ",
|
||
|
|
delta, *unit);
|
||
|
|
printk_prot(m, st->current_prot, st->level,
|
||
|
|
st->to_dmesg);
|
||
|
|
}
|
||
|
|
st->lines++;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* We print markers for special areas of address space,
|
||
|
|
* such as the start of vmalloc space etc.
|
||
|
|
* This helps in the interpretation.
|
||
|
|
*/
|
||
|
|
if (addr >= st->marker[1].start_address) {
|
||
|
|
if (st->marker->max_lines &&
|
||
|
|
st->lines > st->marker->max_lines) {
|
||
|
|
unsigned long nskip =
|
||
|
|
st->lines - st->marker->max_lines;
|
||
|
|
pt_dump_seq_printf(m, st->to_dmesg,
|
||
|
|
"... %lu entr%s skipped ... \n",
|
||
|
|
nskip,
|
||
|
|
nskip == 1 ? "y" : "ies");
|
||
|
|
}
|
||
|
|
st->marker++;
|
||
|
|
st->lines = 0;
|
||
|
|
pt_dump_seq_printf(m, st->to_dmesg, "---[ %s ]---\n",
|
||
|
|
st->marker->name);
|
||
|
|
}
|
||
|
|
|
||
|
|
st->start_address = addr;
|
||
|
|
st->current_prot = new_prot;
|
||
|
|
st->effective_prot = new_eff;
|
||
|
|
st->level = level;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void ptdump_walk_pgd_level_core(struct seq_file *m,
|
||
|
|
struct mm_struct *mm, pgd_t *pgd,
|
||
|
|
bool checkwx, bool dmesg)
|
||
|
|
{
|
||
|
|
const struct ptdump_range ptdump_ranges[] = {
|
||
|
|
#ifdef CONFIG_X86_64
|
||
|
|
{0, PTRS_PER_PGD * PGD_LEVEL_MULT / 2},
|
||
|
|
{GUARD_HOLE_END_ADDR, ~0UL},
|
||
|
|
#else
|
||
|
|
{0, ~0UL},
|
||
|
|
#endif
|
||
|
|
{0, 0}
|
||
|
|
};
|
||
|
|
|
||
|
|
struct pg_state st = {
|
||
|
|
.ptdump = {
|
||
|
|
.note_page = note_page,
|
||
|
|
.effective_prot = effective_prot,
|
||
|
|
.range = ptdump_ranges
|
||
|
|
},
|
||
|
|
.level = -1,
|
||
|
|
.to_dmesg = dmesg,
|
||
|
|
.check_wx = checkwx,
|
||
|
|
.seq = m
|
||
|
|
};
|
||
|
|
|
||
|
|
ptdump_walk_pgd(&st.ptdump, mm, pgd);
|
||
|
|
|
||
|
|
if (!checkwx)
|
||
|
|
return;
|
||
|
|
if (st.wx_pages)
|
||
|
|
pr_info("x86/mm: Checked W+X mappings: FAILED, %lu W+X pages found.\n",
|
||
|
|
st.wx_pages);
|
||
|
|
else
|
||
|
|
pr_info("x86/mm: Checked W+X mappings: passed, no W+X pages found.\n");
|
||
|
|
}
|
||
|
|
|
||
|
|
void ptdump_walk_pgd_level(struct seq_file *m, struct mm_struct *mm)
|
||
|
|
{
|
||
|
|
ptdump_walk_pgd_level_core(m, mm, mm->pgd, false, true);
|
||
|
|
}
|
||
|
|
|
||
|
|
void ptdump_walk_pgd_level_debugfs(struct seq_file *m, struct mm_struct *mm,
|
||
|
|
bool user)
|
||
|
|
{
|
||
|
|
pgd_t *pgd = mm->pgd;
|
||
|
|
#ifdef CONFIG_PAGE_TABLE_ISOLATION
|
||
|
|
if (user && boot_cpu_has(X86_FEATURE_PTI))
|
||
|
|
pgd = kernel_to_user_pgdp(pgd);
|
||
|
|
#endif
|
||
|
|
ptdump_walk_pgd_level_core(m, mm, pgd, false, false);
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL_GPL(ptdump_walk_pgd_level_debugfs);
|
||
|
|
|
||
|
|
void ptdump_walk_user_pgd_level_checkwx(void)
|
||
|
|
{
|
||
|
|
#ifdef CONFIG_PAGE_TABLE_ISOLATION
|
||
|
|
pgd_t *pgd = INIT_PGD;
|
||
|
|
|
||
|
|
if (!(__supported_pte_mask & _PAGE_NX) ||
|
||
|
|
!boot_cpu_has(X86_FEATURE_PTI))
|
||
|
|
return;
|
||
|
|
|
||
|
|
pr_info("x86/mm: Checking user space page tables\n");
|
||
|
|
pgd = kernel_to_user_pgdp(pgd);
|
||
|
|
ptdump_walk_pgd_level_core(NULL, &init_mm, pgd, true, false);
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
void ptdump_walk_pgd_level_checkwx(void)
|
||
|
|
{
|
||
|
|
ptdump_walk_pgd_level_core(NULL, &init_mm, INIT_PGD, true, false);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int __init pt_dump_init(void)
|
||
|
|
{
|
||
|
|
/*
|
||
|
|
* Various markers are not compile-time constants, so assign them
|
||
|
|
* here.
|
||
|
|
*/
|
||
|
|
#ifdef CONFIG_X86_64
|
||
|
|
address_markers[LOW_KERNEL_NR].start_address = PAGE_OFFSET;
|
||
|
|
address_markers[VMALLOC_START_NR].start_address = VMALLOC_START;
|
||
|
|
address_markers[VMEMMAP_START_NR].start_address = VMEMMAP_START;
|
||
|
|
#ifdef CONFIG_MODIFY_LDT_SYSCALL
|
||
|
|
address_markers[LDT_NR].start_address = LDT_BASE_ADDR;
|
||
|
|
#endif
|
||
|
|
#ifdef CONFIG_KASAN
|
||
|
|
address_markers[KASAN_SHADOW_START_NR].start_address = KASAN_SHADOW_START;
|
||
|
|
address_markers[KASAN_SHADOW_END_NR].start_address = KASAN_SHADOW_END;
|
||
|
|
#endif
|
||
|
|
#endif
|
||
|
|
#ifdef CONFIG_X86_32
|
||
|
|
address_markers[VMALLOC_START_NR].start_address = VMALLOC_START;
|
||
|
|
address_markers[VMALLOC_END_NR].start_address = VMALLOC_END;
|
||
|
|
# ifdef CONFIG_HIGHMEM
|
||
|
|
address_markers[PKMAP_BASE_NR].start_address = PKMAP_BASE;
|
||
|
|
# endif
|
||
|
|
address_markers[FIXADDR_START_NR].start_address = FIXADDR_START;
|
||
|
|
address_markers[CPU_ENTRY_AREA_NR].start_address = CPU_ENTRY_AREA_BASE;
|
||
|
|
# ifdef CONFIG_MODIFY_LDT_SYSCALL
|
||
|
|
address_markers[LDT_NR].start_address = LDT_BASE_ADDR;
|
||
|
|
# endif
|
||
|
|
#endif
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
__initcall(pt_dump_init);
|