From 9eb5a31bc2d7f6af88459b89c414fe144e7491f8 Mon Sep 17 00:00:00 2001
From: Kazuhito Hagio <k-hagio@ab.jp.nec.com>
Date: Thu, 8 Nov 2018 14:26:43 -0500
Subject: [PATCH] [PATCH] Prepare paddr_to_vaddr() for arch-specific p2v
conversion
Currently, conversion from physical address to virtual address in
--mem-usage option is "paddr + PAGE_OFFSET", which was written for
x86_64, but it's not suitable especially for arm64.
This patch introduces paddr_to_vaddr() macro to get prepared for
arch-specific physical to virtual conversion.
Tested-by: Bhupesh Sharma <bhsharma@redhat.com>
Signed-off-by: Kazuhito Hagio <k-hagio@ab.jp.nec.com>
---
elf_info.c | 7 ++++---
makedumpfile.h | 11 +++++++++++
2 files changed, 15 insertions(+), 3 deletions(-)
diff --git a/makedumpfile-1.6.4/elf_info.c b/makedumpfile-1.6.4/elf_info.c
index 711601a170c7..1d33e96684b6 100644
--- a/makedumpfile-1.6.4/elf_info.c
+++ b/makedumpfile-1.6.4/elf_info.c
@@ -372,7 +372,7 @@ int set_kcore_vmcoreinfo(uint64_t vmcoreinfo_addr, uint64_t vmcoreinfo_len)
off_t offset_desc;
offset = UNINITIALIZED;
- kvaddr = (ulong)vmcoreinfo_addr + PAGE_OFFSET;
+ kvaddr = paddr_to_vaddr(vmcoreinfo_addr);
for (i = 0; i < num_pt_loads; ++i) {
struct pt_load_segment *p = &pt_loads[i];
@@ -810,10 +810,11 @@ static int exclude_segment(struct pt_load_segment **pt_loads,
int i, j, tidx = -1;
unsigned long long vstart, vend, kvstart, kvend;
struct pt_load_segment temp_seg = {0};
- kvstart = (ulong)start + PAGE_OFFSET;
- kvend = (ulong)end + PAGE_OFFSET;
unsigned long size;
+ kvstart = paddr_to_vaddr(start);
+ kvend = paddr_to_vaddr(end);
+
for (i = 0; i < (*num_pt_loads); i++) {
vstart = (*pt_loads)[i].virt_start;
vend = (*pt_loads)[i].virt_end;
diff --git a/makedumpfile-1.6.4/makedumpfile.h b/makedumpfile-1.6.4/makedumpfile.h
index 46ebe2ee5a1f..574a335e84af 100644
--- a/makedumpfile-1.6.4/makedumpfile.h
+++ b/makedumpfile-1.6.4/makedumpfile.h
@@ -965,6 +965,8 @@ typedef unsigned long pgd_t;
static inline int stub_true() { return TRUE; }
static inline int stub_true_ul(unsigned long x) { return TRUE; }
static inline int stub_false() { return FALSE; }
+#define paddr_to_vaddr_general(X) ((X) + PAGE_OFFSET)
+
#ifdef __aarch64__
int get_phys_base_arm64(void);
int get_machdep_info_arm64(void);
@@ -975,6 +977,7 @@ int get_xen_info_arm64(void);
unsigned long get_kaslr_offset_arm64(unsigned long vaddr);
#define find_vmemmap() stub_false()
#define vaddr_to_paddr(X) vaddr_to_paddr_arm64(X)
+#define paddr_to_vaddr(X) paddr_to_vaddr_general(X)
#define get_phys_base() get_phys_base_arm64()
#define get_machdep_info() get_machdep_info_arm64()
#define get_versiondep_info() get_versiondep_info_arm64()
@@ -995,6 +998,7 @@ unsigned long long vaddr_to_paddr_arm(unsigned long vaddr);
#define get_versiondep_info() stub_true()
#define get_kaslr_offset(X) stub_false()
#define vaddr_to_paddr(X) vaddr_to_paddr_arm(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 /* arm */
@@ -1009,6 +1013,7 @@ unsigned long long vaddr_to_paddr_x86(unsigned long vaddr);
#define get_versiondep_info() get_versiondep_info_x86()
#define get_kaslr_offset(X) stub_false()
#define vaddr_to_paddr(X) vaddr_to_paddr_x86(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 /* x86 */
@@ -1026,6 +1031,7 @@ unsigned long long vtop4_x86_64_pagetable(unsigned long vaddr, unsigned long pag
#define get_versiondep_info() get_versiondep_info_x86_64()
#define get_kaslr_offset(X) get_kaslr_offset_x86_64(X)
#define vaddr_to_paddr(X) vtop4_x86_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 /* x86_64 */
@@ -1041,6 +1047,7 @@ int arch_crashkernel_mem_size_ppc64(void);
#define get_versiondep_info() get_versiondep_info_ppc64()
#define get_kaslr_offset(X) stub_false()
#define vaddr_to_paddr(X) vaddr_to_paddr_ppc64(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() arch_crashkernel_mem_size_ppc64()
#endif /* powerpc64 */
@@ -1054,6 +1061,7 @@ unsigned long long vaddr_to_paddr_ppc(unsigned long vaddr);
#define get_versiondep_info() stub_true()
#define get_kaslr_offset(X) stub_false()
#define vaddr_to_paddr(X) vaddr_to_paddr_ppc(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 /* powerpc32 */
@@ -1068,6 +1076,7 @@ int is_iomem_phys_addr_s390x(unsigned long addr);
#define get_versiondep_info() stub_true()
#define get_kaslr_offset(X) stub_false()
#define vaddr_to_paddr(X) vaddr_to_paddr_s390x(X)
+#define paddr_to_vaddr(X) paddr_to_vaddr_general(X)
#define is_phys_addr(X) is_iomem_phys_addr_s390x(X)
#define arch_crashkernel_mem_size() stub_false()
#endif /* s390x */
@@ -1082,6 +1091,7 @@ unsigned long long vaddr_to_paddr_ia64(unsigned long vaddr);
#define get_versiondep_info() stub_true()
#define get_kaslr_offset(X) stub_false()
#define vaddr_to_paddr(X) vaddr_to_paddr_ia64(X)
+#define paddr_to_vaddr(X) paddr_to_vaddr_general(X)
#define VADDR_REGION(X) (((unsigned long)(X)) >> REGION_SHIFT)
#define is_phys_addr(X) stub_true_ul(X)
#define arch_crashkernel_mem_size() stub_false()
@@ -1096,6 +1106,7 @@ unsigned long long vaddr_to_paddr_sparc64(unsigned long vaddr);
#define get_phys_base() get_phys_base_sparc64()
#define get_versiondep_info() get_versiondep_info_sparc64()
#define vaddr_to_paddr(X) vaddr_to_paddr_sparc64(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 /* sparc64 */
--
2.7.4