kdump: add sw64 support

Signed-off-by: Gu Zitao <guzitao@wxiat.com>
2025-03-31 15:43:10 +08:00 · 2025-03-31 15:43:10 +08:00 · 41adb0fe8b
commit 41adb0fe8b
parent 252aa1169d
4 changed files with 874 additions and 535 deletions
--- a/kexec-tools.spec
+++ b/kexec-tools.spec
@ -4,7 +4,7 @@

 Name: kexec-tools
 Version: 2.0.26
-Release: 10
+Release: 11
 License: GPLv2
 Summary: The kexec/kdump userspace component
 URL:     https://www.kernel.org/
@ -75,8 +75,8 @@ Patch0002:	kexec-Add-quick-kexec-support.patch
 Patch0003:	kexec-Quick-kexec-implementation-for-arm64.patch

 %ifarch sw_64
-Patch0004:	sw_64.patch
-Patch0005:	makedumpfile-1.7.2-sw.patch
+Patch0004:	sw64.patch
+Patch0005:	makedumpfile-1.7.4-sw64.patch
 %endif

 %ifarch riscv64
@ -296,6 +296,9 @@ done
 %endif

 %changelog
+* Mon Mar 31 2025 Gu Zitao <guzitao@wxiat.com> - 2.0.26-11
+- kdump: add sw64 support
+
 * Mon Feb 10 2025 chenhaixiang <chenhaixiang3@live.com> - 2.0.26-10
 - Before adding to usablemem_rgns, check if the memory range is already included.

--- a/makedumpfile-1.7.2-sw.patch
+++ b/makedumpfile-1.7.2-sw.patch
@ -1,233 +0,0 @@
-diff -Naru ./makedumpfile-1.7.2/arch/sw_64.c ./makedumpfile-1.7.2-sw/arch/sw_64.c
--- ./makedumpfile-1.7.2/arch/sw_64.c	1970-01-01 00:00:00.000000000 +0000
-+++ ./makedumpfile-1.7.2-sw/arch/sw_64.c	2022-08-19 06:54:24.938438551 +0000
-@@ -0,0 +1,126 @@
-+/*
-+ * sw_64.c
-+ *
-+ * Copyright (C) 2021 Loongson Technology Co., Ltd.
-+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License as published by
-+ * the Free Software Foundation (version 2 of the License).
-+ *
-+ * 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, write to the Free Software
-+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-+ */
-+#ifdef __sw_64__
-+
-+#include "../print_info.h"
-+#include "../elf_info.h"
-+#include "../makedumpfile.h"
-+
-+int
-+get_phys_base_sw_64(void)
-+{
-+	info->phys_base = 0ULL;
-+
-+	DEBUG_MSG("phys_base    : %lx\n", info->phys_base);
-+
-+	return TRUE;
-+}
-+
-+int
-+get_machdep_info_sw_64(void)
-+{
-+	info->section_size_bits = _SECTION_SIZE_BITS;
-+
-+	/* Check if we can get MAX_PHYSMEM_BITS from vmcoreinfo */
-+	if (NUMBER(MAX_PHYSMEM_BITS) != NOT_FOUND_NUMBER)
-+		info->max_physmem_bits = NUMBER(MAX_PHYSMEM_BITS);
-+	else
-+		info->max_physmem_bits  = _MAX_PHYSMEM_BITS;
-+
-+	DEBUG_MSG("max_physmem_bits : %lx\n", info->max_physmem_bits);
-+	DEBUG_MSG("section_size_bits: %lx\n", info->section_size_bits);
-+
-+	return TRUE;
-+}
-+
-+int
-+get_versiondep_info_sw_64(void)
-+{
-+	info->page_offset  = 0x9800000000000000ULL;
-+
-+	DEBUG_MSG("page_offset : %lx\n", info->page_offset);
-+
-+	return TRUE;
-+}
-+
-+/*
-+ * Translate a virtual address to a physical address by using 3 levels paging.
-+ */
-+unsigned long long
-+vaddr_to_paddr_sw_64(unsigned long vaddr)
-+{
-+	unsigned long long paddr = NOT_PADDR;
-+	pgd_t	*pgda, pgdv;
-+	pmd_t	*pmda, pmdv;
-+	pte_t 	*ptea, ptev;
-+
-+	/*
-+	 * CKSEG0/CKSEG1
-+	 */
-+	if (vaddr >= 0xffffffff80000000ULL && vaddr < 0xffffffffc0000000ULL)
-+		return vaddr & 0x1fffffffULL;
-+
-+	/*
-+	 * XKPHYS
-+	 */
-+	if (vaddr >= 0x9000000000000000ULL && vaddr < 0xc000000000000000ULL)
-+		return vaddr & ((1ULL << MAX_PHYSMEM_BITS()) - 1);
-+
-+	if (SYMBOL(swapper_pg_dir) == NOT_FOUND_SYMBOL) {
-+		ERRMSG("Can't get the symbol of swapper_pg_dir.\n");
-+		return NOT_PADDR;
-+	}
-+
-+	pgda = pgd_offset(SYMBOL(swapper_pg_dir), vaddr);
-+	if (!readmem(PADDR, (unsigned long long)pgda, &pgdv, sizeof(pgdv))) {
-+		ERRMSG("Can't read pgd\n");
-+		return NOT_PADDR;
-+	}
-+
-+	pmda = pmd_offset(&pgdv, vaddr);
-+	if (!readmem(PADDR, (unsigned long long)pmda, &pmdv, sizeof(pmdv))) {
-+		ERRMSG("Can't read pmd\n");
-+		return NOT_PADDR;
-+	}
-+
-+	switch (pmdv & (_PAGE_PRESENT|_PAGE_HUGE)) {
-+	case _PAGE_PRESENT:
-+		ptea = pte_offset(&pmdv, vaddr);
-+		/* 64k page */
-+		if (!readmem(PADDR, (unsigned long long)ptea, &ptev, sizeof(ptev))) {
-+			ERRMSG("Can't read pte\n");
-+			return NOT_PADDR;
-+		}
-+
-+		if (!(ptev & _PAGE_PRESENT)) {
-+			ERRMSG("Can't get a valid pte.\n");
-+			return NOT_PADDR;
-+		} else {
-+			paddr = PAGEBASE(ptev) + (vaddr & (PAGESIZE() - 1));
-+		}
-+		break;
-+	case _PAGE_PRESENT|_PAGE_HUGE:
-+		paddr = (pmdv & PMD_MASK) + (vaddr & (PMD_SIZE - 1));
-+		break;
-+	}
-+
-+	return paddr;
-+}
-+
-+#endif /* sw_64 */
-diff -Naru ./makedumpfile-1.7.2/makedumpfile.h ./makedumpfile-1.7.2-sw/makedumpfile.h
--- ./makedumpfile-1.7.2/makedumpfile.h	2021-11-08 00:36:15.000000000 +0000
-+++ ./makedumpfile-1.7.2-sw/makedumpfile.h	2022-08-19 07:46:43.093698825 +0000
-@@ -963,7 +963,7 @@
- 
- #endif          /* sparc64 */
- 
-#ifdef __mips64__ /* mips64 */
-+#ifdef __mips64__   /* mips64 */
- #define KVBASE			PAGE_OFFSET
- 
- #ifndef _XKPHYS_START_ADDR
-@@ -996,6 +996,40 @@
- 
- #endif		/* mips64 */
- 
-+#ifdef __sw_64__   /* sw_64 */
-+#define KVBASE                  PAGE_OFFSET
-+#define _SECTION_SIZE_BITS      (28)
-+#define _MAX_PHYSMEM_BITS       (48)
-+#define _PAGE_PRESENT           (1 << 0)
-+#define _PAGE_HUGE              (1 << 4)
-+
-+typedef unsigned long pte_t;
-+typedef unsigned long pmd_t;
-+typedef unsigned long pgd_t;
-+
-+#define PAGE_MASK               (~(PAGESIZE() - 1))
-+#define PMD_MASK                (~(PMD_SIZE - 1))
-+#define PMD_SHIFT               ((PAGESHIFT() - 3) * 2 + 3)
-+#define PMD_SIZE                (1UL << PMD_SHIFT)
-+#define PGDIR_SHIFT             ((PAGESHIFT() - 3) * 3 + 3)
-+#define PTRS_PER_PTE            (1 << (PAGESHIFT() - 3))
-+#define PTRS_PER_PMD            PTRS_PER_PTE
-+#define PTRS_PER_PGD            PTRS_PER_PTE
-+
-+#define pte_index(vaddr)                (((vaddr) >> PAGESHIFT()) & (PTRS_PER_PTE - 1))
-+#define pmd_page_paddr(pmd)             (pmd & (int32_t)PAGE_MASK)
-+#define pte_offset(dir, vaddr)          ((pte_t *)pmd_page_paddr((*dir)) + pte_index(vaddr))
-+
-+#define pmd_index(vaddr)                (((vaddr) >> PMD_SHIFT) & (PTRS_PER_PMD - 1))
-+#define pgd_page_paddr(pgd)             (pgd & (int32_t)PAGE_MASK)
-+#define pmd_offset(pgd, vaddr)          ((pmd_t *)pgd_page_paddr((*pgd)) + pmd_index(vaddr))
-+
-+#define pgd_index(vaddr)                (((vaddr) >> PGDIR_SHIFT) & (PTRS_PER_PGD - 1))
-+#define pgd_offset(pgdir, vaddr)        ((pgd_t *)(pgdir) + pgd_index(vaddr))
-+
-+#endif          /* sw_64 */
-+
-+
- #ifdef __loongarch64__
- #define KVBASE			(0x8000000000000000ULL)
- #define _PAGE_OFFSET		(0x9000000000000000ULL)
-@@ -1167,6 +1201,23 @@
- #define arch_crashkernel_mem_size()	stub_false()
- #endif		/* mips64 */
- 
-+#ifdef __sw_64__ /* sw64 */
-+int get_phys_base_sw_64(void);
-+int get_machdep_info_sw_64(void);
-+int get_versiondep_info_sw_64(void);
-+unsigned long long vaddr_to_paddr_sw_64(unsigned long vaddr);
-+#define find_vmemmap()          stub_false()
-+#define get_phys_base()         get_phys_base_sw_64()
-+#define get_machdep_info()      get_machdep_info_sw_64()
-+#define get_versiondep_info()   get_versiondep_info_sw_64()
-+#define get_kaslr_offset(X)     stub_false()
-+#define vaddr_to_paddr(X)       vaddr_to_paddr_sw_64(X)
-+#define paddr_to_vaddr(X)       paddr_to_vaddr_general(X)
-+#define is_phys_addr(X)         stub_true_ul(X)
-+#define arch_crashkernel_mem_size()     stub_false()
-+#endif          /* sw_64 */
-+
-+
- #ifdef __loongarch64__ /* loongarch64 */
- int get_phys_base_loongarch64(void);
- int get_machdep_info_loongarch64(void);
-@@ -2301,6 +2352,13 @@
- #define get_xen_info_arch(X) FALSE
- #endif	/* mips64 */
- 
-+#ifdef __sw_64__ /* sw_64 */
-+#define kvtop_xen(X)    FALSE
-+#define get_xen_basic_info_arch(X) FALSE
-+#define get_xen_info_arch(X) FALSE
-+#endif  /* sw_64 */
-+
-+
- #ifdef __loongarch64__ /* loongarch64 */
- #define kvtop_xen(X)	FALSE
- #define get_xen_basic_info_arch(X) FALSE
-diff -Naru ./makedumpfile-1.7.2/Makefile ./makedumpfile-1.7.2-sw/Makefile
--- ./makedumpfile-1.7.2/Makefile	2021-11-08 00:36:15.000000000 +0000
-+++ ./makedumpfile-1.7.2-sw/Makefile	2022-08-19 06:55:54.538591123 +0000
-@@ -47,7 +47,7 @@
- SRC_BASE = makedumpfile.c makedumpfile.h diskdump_mod.h sadump_mod.h sadump_info.h
- SRC_PART = print_info.c dwarf_info.c elf_info.c erase_info.c sadump_info.c cache.c tools.c printk.c detect_cycle.c
- OBJ_PART=$(patsubst %.c,%.o,$(SRC_PART))
-SRC_ARCH = arch/arm.c arch/arm64.c arch/x86.c arch/x86_64.c arch/ia64.c arch/ppc64.c arch/s390x.c arch/ppc.c arch/sparc64.c arch/mips64.c arch/loongarch64.c
-+SRC_ARCH = arch/arm.c arch/arm64.c arch/x86.c arch/x86_64.c arch/ia64.c arch/ppc64.c arch/s390x.c arch/ppc.c arch/sparc64.c arch/mips64.c arch/loongarch64.c arch/sw_64.c
- OBJ_ARCH=$(patsubst %.c,%.o,$(SRC_ARCH))
- 
- LIBS = -ldw -lbz2 -ldl -lelf -lz
--- a/makedumpfile-1.7.4-sw64.patch
+++ b/makedumpfile-1.7.4-sw64.patch
@ -0,0 +1,430 @@
+diff -Naru ./makedumpfile-1.7.4/arch/sw_64.c ./makedumpfile-1.7.4-sw64/arch/sw_64.c
+--- ./makedumpfile-1.7.4/arch/sw_64.c	1970-01-01 08:00:00.000000000 +0800
+++ ./makedumpfile-1.7.4-sw64/arch/sw_64.c	2025-04-01 08:37:38.886978748 +0800
+@@ -0,0 +1,328 @@
+/*
+ * arch/sw_64.c
+ *
+ * Copyright (C) 2021 Uniontech, Bai xin <baixin@uniontech.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation (version 2 of the License).
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifdef __sw_64__
+
+#include "../elf_info.h"
+#include "../makedumpfile.h"
+#include "../print_info.h"
+
+typedef struct {
+	unsigned long pgd;
+} pgd_t;
+
+typedef struct {
+	pgd_t pgd;
+} pud_t;
+
+typedef struct {
+	pud_t pud;
+} pmd_t;
+
+typedef struct {
+	unsigned long pte;
+} pte_t;
+
+#define __pte(x)	((pte_t) { (x) } )
+#define __pmd(x)	((pmd_t) { (x) } )
+#define __pud(x)	((pud_t) { (x) } )
+#define __pgd(x)	((pgd_t) { (x) } )
+
+static int pgtable_level = 4;
+static int va_bits = 53;
+
+#define pgd_val(x)		((x).pgd)
+#define pud_val(x)		(pgd_val((x).pgd))
+#define pmd_val(x)		(pud_val((x).pud))
+#define pte_val(x)		((x).pte)
+
+/* See 'include/uapi/linux/const.h' for definitions below */
+#define __AC(X,Y)	(X##Y)
+#define _AC(X,Y)	__AC(X,Y)
+#define _AT(T,X)	((T)(X))
+
+/* See 'include/asm/pgtable-types.h' for definitions below */
+typedef unsigned long pteval_t;
+typedef unsigned long pmdval_t;
+typedef unsigned long pudval_t;
+typedef unsigned long pgdval_t;
+
+#define PAGE_SHIFT	13
+
+/* See 'arch/sw_64/include/asm/pgtable-hwdef.h' for definitions below */
+
+#define SW_64_HW_PGTABLE_LEVEL_SHIFT(n)	((PAGE_SHIFT - 3) * (4 - (n)) + 3)
+
+#define PTRS_PER_PTE		(1 << (PAGE_SHIFT - 3))
+
+/*
+ * PMD_SHIFT determines the size a level 2 page table entry can map.
+ */
+#define PMD_SHIFT	(PAGE_SHIFT + (PAGE_SHIFT - 3))
+#define PMD_SIZE		(_AC(1, UL) << PMD_SHIFT)
+#define PMD_MASK		(~(PMD_SIZE-1))
+#define PTRS_PER_PMD		PTRS_PER_PTE
+
+/*
+ * PUD_SHIFT determines the size a level 1 page table entry can map.
+ */
+#define PUD_SHIFT	(PAGE_SHIFT + 2 * (PAGE_SHIFT - 3))
+#define PUD_SIZE		(_AC(1, UL) << PUD_SHIFT)
+#define PUD_MASK		(~(PUD_SIZE-1))
+#define PTRS_PER_PUD		PTRS_PER_PTE
+
+/*
+ * PGDIR_SHIFT determines the size a top-level page table entry can map
+ * (depending on the configuration, this level can be 0, 1 or 2).
+ */
+#define PGDIR_SHIFT	(PAGE_SHIFT + 3* (PAGE_SHIFT - 3))
+#define PGDIR_SIZE		(_AC(1, UL) << PGDIR_SHIFT)
+#define PGDIR_MASK		(~(PGDIR_SIZE-1))
+#define PTRS_PER_PGD		(1UL << (PAGE_SHIFT - 3))
+
+#define pgd_index(vaddr)		(((vaddr) >> PGDIR_SHIFT) & (PTRS_PER_PGD - 1))
+#define pgd_offset(pgd, vaddr)		((pgd_t *)(pgd) + pgd_index(vaddr))
+
+#define __SW_PAGE_OFFSET  		0xfff0000000000000
+#define __START_KERNEL_map      __SW_PAGE_OFFSET
+#define __SW_MAX_PHYSMEM_BITS     48
+#define __SW_SECTION_SIZE_BITS    28
+
+static unsigned long long
+__pa(unsigned long x)
+{
+    unsigned long y = x;
+
+    if (y >= __START_KERNEL_map) {
+            y -= __START_KERNEL_map;
+    } else {
+            y -= __SW_PAGE_OFFSET;
+    }
+    return y;
+}
+
+#define _PFN_BITS	40
+#define _PTE_FLAGS_BITS	(64 - _PFN_BITS)
+#define _PFN_MASK	0x7FFFFFFFF000000UL
+#define PAGE_OFFSET	0xfff0000000000000
+static inline unsigned long pgd_page_vaddr(pgd_t pgd)
+{
+	return ((pgd_val(pgd) & _PFN_MASK) >> (_PTE_FLAGS_BITS-PAGE_SHIFT));
+}
+#define PTRS_PER_PAGE	(1UL << (PAGE_SHIFT - 3))
+static inline unsigned long _pud_offset(unsigned long vaddr)
+{
+	return (vaddr >> PUD_SHIFT) & (PTRS_PER_PAGE - 1);
+}
+static inline pud_t *pud_offset(pgd_t *pgda, pgd_t *pgdv, unsigned long vaddr)
+{
+	pud_t *ret = (pud_t *) pgd_page_vaddr(*pgdv)
+		+ _pud_offset(vaddr);
+	return ret;
+}
+
+static inline unsigned long pud_page_vaddr(pud_t pud)
+{
+	return ((pud_val(pud) & _PFN_MASK) >> (_PTE_FLAGS_BITS-PAGE_SHIFT));
+}
+static inline unsigned long _pmd_offset(unsigned long vaddr)
+{
+	return ((vaddr >> PMD_SHIFT) & (PTRS_PER_PAGE - 1));
+}
+static inline pmd_t *pmd_offset(pud_t *puda, pud_t *pudv, unsigned long vaddr)
+{
+	pmd_t *ret = (pmd_t *) pud_page_vaddr(*pudv)
+		+ _pmd_offset(vaddr);
+	return ret;
+}
+
+static inline unsigned long
+pmd_page_vaddr(pmd_t pmd)
+{
+	return ((pmd_val(pmd) & _PFN_MASK) >> (_PTE_FLAGS_BITS-PAGE_SHIFT));
+}
+static inline unsigned long _pte_offset(unsigned long address)
+{
+	return ((address >> PAGE_SHIFT) & (PTRS_PER_PAGE - 1));
+}
+static inline pte_t *pte_offset(pmd_t *dir, unsigned long address)
+{
+	pte_t *ret = (pte_t *) pmd_page_vaddr(*dir)
+		+ _pte_offset(address);
+	return ret;
+}
+
+#define _PAGE_VALID	0x0001
+static inline int pte_present(pte_t pte)
+{
+	return pte_val(pte) & _PAGE_VALID;
+}
+
+ulong
+get_stext_symbol(void)
+{
+	int found;
+	FILE *fp;
+	char buf[BUFSIZE];
+	char *kallsyms[MAXARGS];
+	ulong kallsym;
+
+	if (!file_exists("/proc/kallsyms")) {
+		ERRMSG("(%s) does not exist, will not be able to read symbols. %s\n",
+		       "/proc/kallsyms", strerror(errno));
+		return FALSE;
+	}
+
+	if ((fp = fopen("/proc/kallsyms", "r")) == NULL) {
+		ERRMSG("Cannot open (%s) to read symbols. %s\n",
+		       "/proc/kallsyms", strerror(errno));
+		return FALSE;
+	}
+
+	found = FALSE;
+	kallsym = 0;
+
+	while (!found && fgets(buf, BUFSIZE, fp) &&
+	      (parse_line(buf, kallsyms) == 3)) {
+		if (hexadecimal(kallsyms[0], 0) &&
+		    STREQ(kallsyms[2], "_stext")) {
+			kallsym = htol(kallsyms[0], 0);
+			found = TRUE;
+			break;
+		}
+	}
+	fclose(fp);
+
+	return(found ? kallsym : FALSE);
+}
+
+int
+get_machdep_info_sw_64(void)
+{
+	info->section_size_bits = __SW_SECTION_SIZE_BITS;
+	info->max_physmem_bits = __SW_MAX_PHYSMEM_BITS;
+	return TRUE;
+}
+
+unsigned long long
+kvtop_xen_sw_64(unsigned long kvaddr)
+{
+	return ERROR;
+}
+
+int
+get_xen_basic_info_sw_64(void)
+{
+	return ERROR;
+}
+
+int
+get_xen_info_sw_64(void)
+{
+	return ERROR;
+}
+
+/*
+ * vaddr_to_paddr_sw_64() - translate arbitrary virtual address to physical
+ * @vaddr: virtual address to translate
+ *
+ * Function translates @vaddr into physical address using page tables. This
+ * address can be any virtual address. Returns physical address of the
+ * corresponding virtual address or %NOT_PADDR when there is no translation.
+ */
+unsigned long long
+vaddr_to_paddr_sw_64(unsigned long vaddr)
+{
+	unsigned long long paddr = NOT_PADDR;
+	unsigned long long swapper_phys;
+	pgd_t	*pgda, pgdv;
+	pud_t	*puda, pudv;
+	pmd_t	*pmda, pmdv;
+	pte_t 	*ptea, ptev;
+
+	if (vaddr > 0xffffffff80000000){
+		paddr = vaddr - 0xffffffff80000000;
+		DEBUG_MSG("direct map:%-16lx ----> %-16lx\n", vaddr, paddr);
+		return paddr;
+	}
+
+	if (vaddr > 0xfff0000000000000 && vaddr < 0xfff0ffffffffffff){
+		paddr = vaddr - 0xfff0000000000000;
+		DEBUG_MSG("direct map:%-16lx ----> %-16lx\n", vaddr, paddr);
+		return paddr;
+	}
+
+	if (SYMBOL(swapper_pg_dir) == NOT_FOUND_SYMBOL) {
+		ERRMSG("Can't get the symbol of swapper_pg_dir.\n");
+		return NOT_PADDR;
+	}
+
+	swapper_phys = __pa(SYMBOL(swapper_pg_dir));
+	DEBUG_MSG("start look table vaddr:%-16lx\n", vaddr);
+	DEBUG_MSG("swapper_pg_dir:%-16lx\n", SYMBOL(swapper_pg_dir));
+
+	pgda = pgd_offset(swapper_phys, vaddr);
+	DEBUG_MSG("pgd:%-16lx offset:%-16lx pgda:%-16lx", swapper_phys, pgd_index(vaddr) * sizeof(pgd_t), pgda);
+	if (!readmem(PADDR, (unsigned long long)pgda, &pgdv, sizeof(pgdv))) {
+		ERRMSG("Can't read pgd\n");
+		return NOT_PADDR;
+	}
+	DEBUG_MSG(" pgdv:%-16lx\n", pgdv);
+
+	puda = pud_offset(pgda, &pgdv, vaddr);
+	DEBUG_MSG("pud:%-16lx offset:%-16lx puda:%-16lx", pgd_page_vaddr(pgdv), _pud_offset(vaddr) * sizeof(pud_t), puda);
+	if (!readmem(PADDR, (unsigned long long)puda, &pudv, sizeof(pudv))) {
+		ERRMSG("Can't read pud\n");
+		return NOT_PADDR;
+	}
+	DEBUG_MSG(" pudv:%-16lx\n", pudv);
+
+	if (!pud_val(pudv)) {
+		DEBUG_MSG("addr = %#lx, pgd = %#lx, pud = %#lx\n",
+				vaddr, pgd_val(pgdv), pud_val(pudv));
+		return 0;
+	}
+
+	pmda = pmd_offset(puda, &pudv, vaddr);
+	DEBUG_MSG("pmd:%-16lx offset:%-16lx pmda:%-16lx", pud_page_vaddr(pudv), _pmd_offset(vaddr) * sizeof(pgd_t), pmda);
+	if (!readmem(PADDR, (unsigned long long)pmda, &pmdv, sizeof(pmdv))) {
+		ERRMSG("Can't read pmd\n");
+		return NOT_PADDR;
+	}
+	DEBUG_MSG(" pmdv:%-16lx\n", pmdv);
+
+	ptea = pte_offset(&pmdv, vaddr);
+	DEBUG_MSG("pte:%-16lx offset:%-16lx ptea:%-16lx", pmd_page_vaddr(pmdv), _pte_offset(vaddr) * sizeof(pgd_t), ptea);
+	if (!readmem(PADDR, (unsigned long long)ptea, &ptev, sizeof(ptev))) {
+		ERRMSG("Can't read pte\n");
+		return NOT_PADDR;
+	}
+	DEBUG_MSG(" ptev:%-16lx\n", ptev);
+
+	if (pte_present(ptev)) {
+		paddr = ((pte_val(ptev) & _PFN_MASK) >> (_PTE_FLAGS_BITS-PAGE_SHIFT)) + (vaddr & ((1 << PAGE_SHIFT) - 1));
+		DEBUG_MSG("paddr:%-16lx", paddr);
+	}
+	pte_val(ptev) = 0;
+	readmem(PADDR, (unsigned long long)paddr, &ptev, sizeof(ptev));
+	DEBUG_MSG(" value:%-16lx\n", ptev);
+	return paddr;
+}
+
+#endif /* __sw_64__ */
+diff -Naru ./makedumpfile-1.7.4/makedumpfile.h ./makedumpfile-1.7.4-sw64/makedumpfile.h
+--- ./makedumpfile-1.7.4/makedumpfile.h	2025-04-01 08:34:04.990967629 +0800
+++ ./makedumpfile-1.7.4-sw64/makedumpfile.h	2025-04-01 08:37:38.886978748 +0800
+@@ -829,6 +829,47 @@
+ 
+ #endif /* __s390x__ */
+ 
+#ifdef __sw_64__
+//#define __PAGE_OFFSET		(info->page_size - 1)
+#define KERNELBASE		(0)
+#define KVBASE			KERNELBASE
+//#define _SECTION_SIZE_BITS	(28)
+//#define _MAX_PHYSMEM_BITS_ORIG          (42)
+//#define _MAX_PHYSMEM_BITS_3_3           (46)
+//
+///* Bits in the segment/region table address-space-control-element */
+//#define _ASCE_TYPE_MASK		0x0c
+//#define _ASCE_TABLE_LENGTH	0x03	/* region table length  */
+//
+//#define TABLE_LEVEL(x)		(((x) & _ASCE_TYPE_MASK) >> 2)
+//#define TABLE_LENGTH(x)		((x) & _ASCE_TABLE_LENGTH)
+//
+///* Bits in the region table entry */
+//#define _REGION_ENTRY_ORIGIN	~0xfffUL	/* region table origin*/
+//#define _REGION_ENTRY_TYPE_MASK	0x0c	/* region table type mask */
+//#define _REGION_ENTRY_INVALID	0x20	/* invalid region table entry */
+//#define _REGION_ENTRY_LENGTH	0x03	/* region table length */
+//#define _REGION_ENTRY_LARGE	0x400
+//#define _REGION_OFFSET_MASK	0x7ffUL	/* region/segment table offset mask */
+//
+//#define RSG_TABLE_LEVEL(x)	(((x) & _REGION_ENTRY_TYPE_MASK) >> 2)
+//#define RSG_TABLE_LENGTH(x)	((x) & _REGION_ENTRY_LENGTH)
+//
+///* Bits in the segment table entry */
+//#define _SEGMENT_ENTRY_ORIGIN	~0x7ffUL
+//#define _SEGMENT_ENTRY_LARGE	0x400
+//#define _SEGMENT_ENTRY_CO	0x100
+//#define _SEGMENT_PAGE_SHIFT	31
+//#define _SEGMENT_INDEX_SHIFT	20
+//
+///* Hardware bits in the page table entry */
+//#define _PAGE_ZERO		0x800	/* Bit pos 52 must conatin zero */
+//#define _PAGE_INVALID		0x400	/* HW invalid bit */
+//#define _PAGE_INDEX_SHIFT	12
+//#define _PAGE_OFFSET_MASK	0xffUL	/* page table offset mask */
+
+#endif /* __sw_64__ */
+
+ #ifdef __ia64__ /* ia64 */
+ #define REGION_SHIFT		(61)
+ 
+@@ -1253,6 +1294,21 @@
+ #define arch_crashkernel_mem_size()	stub_false()
+ #endif          /* s390x */
+ 
+#ifdef __sw_64__ /* sw_64 */
+int get_machdep_info_sw_64(void);
+unsigned long long vaddr_to_paddr_sw_64(unsigned long vaddr);
+//int is_iomem_phys_addr_s390x(unsigned long addr);
+#define find_vmemmap()		stub_false()
+#define get_phys_base()		stub_true()
+#define get_machdep_info()	get_machdep_info_sw_64()
+#define get_versiondep_info()	stub_true()
+#define get_kaslr_offset(X)	stub_false()
+#define vaddr_to_paddr(X)	vaddr_to_paddr_sw_64(X)
+#define paddr_to_vaddr(X)	paddr_to_vaddr_general(X)
+#define is_phys_addr(X)		stub_true_ul(X)
+#define arch_crashkernel_mem_size()	stub_false()
+#endif          /* sw_64 */
+
+ #ifdef __ia64__ /* ia64 */
+ int get_phys_base_ia64(void);
+ int get_machdep_info_ia64(void);
+@@ -2504,6 +2560,12 @@
+ #define get_xen_info_arch(X) FALSE
+ #endif	/* s390x */
+ 
+#ifdef __sw_64__ /* sw_64 */
+#define kvtop_xen(X)	FALSE
+#define get_xen_basic_info_arch(X) FALSE
+#define get_xen_info_arch(X) FALSE
+#endif	/* sw_64 */
+
+ #ifdef __sparc64__ /* sparc64 */
+ #define kvtop_xen(X)	FALSE
+ #define get_xen_basic_info_arch(X) FALSE
+diff -Naru ./makedumpfile-1.7.4/Makefile ./makedumpfile-1.7.4-sw64/Makefile
+--- ./makedumpfile-1.7.4/Makefile	2025-04-01 08:34:04.978967628 +0800
+++ ./makedumpfile-1.7.4-sw64/Makefile	2025-04-01 08:37:38.886978748 +0800
+@@ -47,7 +48,7 @@
+ SRC_BASE = makedumpfile.c makedumpfile.h diskdump_mod.h sadump_mod.h sadump_info.h
+ SRC_PART = print_info.c dwarf_info.c elf_info.c erase_info.c sadump_info.c cache.c tools.c printk.c detect_cycle.c
+ OBJ_PART=$(patsubst %.c,%.o,$(SRC_PART))
+-SRC_ARCH = arch/arm.c arch/arm64.c arch/x86.c arch/x86_64.c arch/ia64.c arch/ppc64.c arch/s390x.c arch/ppc.c arch/sparc64.c arch/mips64.c arch/loongarch64.c arch/riscv64.c
+SRC_ARCH = arch/arm.c arch/arm64.c arch/x86.c arch/x86_64.c arch/ia64.c arch/ppc64.c arch/s390x.c arch/ppc.c arch/sparc64.c arch/mips64.c arch/loongarch64.c arch/riscv64.c arch/sw_64.c
+ OBJ_ARCH=$(patsubst %.c,%.o,$(SRC_ARCH))
+ 
+ LIBS = -ldw -lbz2 -ldl -lelf -lz
--- a/sw_64.patch
+++ b/sw_64.patch