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Merge tag 'dump-pull-request' of https://gitlab.com/marcandre.lureau/qemu into staging

Browse Source 
dump patches

Hi

Includes:
- the first patches from "[PATCH v5 00/18] dump: Add arch section and s390x PV dump"
- "[PATCH v2 0/2] Fix dumping in kdump format with non-aligned memory"

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# gpg: Signature made Thu 06 Oct 2022 11:33:30 EDT
# gpg:                using RSA key 87A9BD933F87C606D276F62DDAE8E10975969CE5
# gpg:                issuer "marcandre.lureau@redhat.com"
# gpg: Good signature from "Marc-André Lureau <marcandre.lureau@redhat.com>" [full]
# gpg:                 aka "Marc-André Lureau <marcandre.lureau@gmail.com>" [full]
# Primary key fingerprint: 87A9 BD93 3F87 C606 D276  F62D DAE8 E109 7596 9CE5

* tag 'dump-pull-request' of https://gitlab.com/marcandre.lureau/qemu:
  dump: fix kdump to work over non-aligned blocks
  dump: simplify a bit kdump get_next_page()
  dump: Rename write_elf*_phdr_note to prepare_elf*_phdr_note
  dump: Split elf header functions into prepare and write
  dump: Rework dump_calculate_size function
  dump: Rework filter area variables
  dump: Rework get_start_block
  dump: Refactor dump_iterate and introduce dump_filter_memblock_*()
  dump: Rename write_elf_loads to write_elf_phdr_loads
  dump: Replace opaque DumpState pointer with a typed one

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Stefan Hajnoczi
2022-10-11 09:31:19 -04:00
parent f1d33f55c4 94d788408d
commit 42e1e350bf
14 changed files with 264 additions and 223 deletions
Download Patch File Download Diff File Expand all files Collapse all files
dump/dump.c
+205 -166
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File diff suppressed because it is too large Load Diff
include/hw/core/sysemu-cpu-ops.h
+4 -4
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@@ -53,25 +53,25 @@ typedef struct SysemuCPUOps {
* 32-bit VM coredump.
*/
int (*write_elf32_note)(WriteCoreDumpFunction f, CPUState *cpu,
int cpuid, void *opaque);
int cpuid, DumpState *s);
/**
* @write_elf64_note: Callback for writing a CPU-specific ELF note to a
* 64-bit VM coredump.
*/
int (*write_elf64_note)(WriteCoreDumpFunction f, CPUState *cpu,
int cpuid, void *opaque);
int cpuid, DumpState *s);
/**
* @write_elf32_qemunote: Callback for writing a CPU- and QEMU-specific ELF
* note to a 32-bit VM coredump.
*/
int (*write_elf32_qemunote)(WriteCoreDumpFunction f, CPUState *cpu,
void *opaque);
DumpState *s);
/**
* @write_elf64_qemunote: Callback for writing a CPU- and QEMU-specific ELF
* note to a 64-bit VM coredump.
*/
int (*write_elf64_qemunote)(WriteCoreDumpFunction f, CPUState *cpu,
void *opaque);
DumpState *s);
/**
* @virtio_is_big_endian: Callback to return %true if a CPU which supports
* runtime configurable endianness is currently big-endian.
include/qemu/typedefs.h
+1
View File
@@ -131,6 +131,7 @@ typedef struct VirtIODevice VirtIODevice;
typedef struct Visitor Visitor;
typedef struct VMChangeStateEntry VMChangeStateEntry;
typedef struct VMStateDescription VMStateDescription;
typedef struct DumpState DumpState;
/*
* Pointer types
include/sysemu/dump.h
+10 -5
View File
@@ -166,11 +166,16 @@ typedef struct DumpState {
hwaddr memory_offset;
int fd;
GuestPhysBlock *next_block;
ram_addr_t start;
bool has_filter;
int64_t begin;
int64_t length;
/*
* Dump filter area variables
*
* A filtered dump only contains the guest memory designated by
* the start address and length variables defined below.
*
* If length is 0, no filtering is applied.
*/
int64_t filter_area_begin; /* Start address of partial guest memory area */
int64_t filter_area_length; /* Length of partial guest memory area */
uint8_t *note_buf; /* buffer for notes */
size_t note_buf_offset; /* the writing place in note_buf */
target/arm/arch_dump.c
+2 -4
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@@ -232,12 +232,11 @@ static int aarch64_write_elf64_sve(WriteCoreDumpFunction f,
#endif
int arm_cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cs,
int cpuid, void *opaque)
int cpuid, DumpState *s)
{
struct aarch64_note note;
ARMCPU *cpu = ARM_CPU(cs);
CPUARMState *env = &cpu->env;
DumpState *s = opaque;
uint64_t pstate, sp;
int ret, i;
@@ -360,12 +359,11 @@ static int arm_write_elf32_vfp(WriteCoreDumpFunction f, CPUARMState *env,
}
int arm_cpu_write_elf32_note(WriteCoreDumpFunction f, CPUState *cs,
int cpuid, void *opaque)
int cpuid, DumpState *s)
{
struct arm_note note;
ARMCPU *cpu = ARM_CPU(cs);
CPUARMState *env = &cpu->env;
DumpState *s = opaque;
int ret, i;
bool fpvalid = cpu_isar_feature(aa32_vfp_simd, cpu);
target/arm/cpu.h
+2 -2
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@@ -1102,9 +1102,9 @@ int arm_gen_dynamic_svereg_xml(CPUState *cpu, int base_reg);
const char *arm_gdb_get_dynamic_xml(CPUState *cpu, const char *xmlname);
int arm_cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cs,
int cpuid, void *opaque);
int cpuid, DumpState *s);
int arm_cpu_write_elf32_note(WriteCoreDumpFunction f, CPUState *cs,
int cpuid, void *opaque);
int cpuid, DumpState *s);
#ifdef TARGET_AARCH64
int aarch64_cpu_gdb_read_register(CPUState *cpu, GByteArray *buf, int reg);
target/i386/arch_dump.c
+15 -15
View File
@@ -42,7 +42,7 @@ typedef struct {
static int x86_64_write_elf64_note(WriteCoreDumpFunction f,
CPUX86State *env, int id,
void *opaque)
DumpState *s)
{
x86_64_user_regs_struct regs;
Elf64_Nhdr *note;
@@ -94,7 +94,7 @@ static int x86_64_write_elf64_note(WriteCoreDumpFunction f,
buf += descsz - sizeof(x86_64_user_regs_struct)-sizeof(target_ulong);
memcpy(buf, &regs, sizeof(x86_64_user_regs_struct));
ret = f(note, note_size, opaque);
ret = f(note, note_size, s);
g_free(note);
if (ret < 0) {
return -1;
@@ -148,7 +148,7 @@ static void x86_fill_elf_prstatus(x86_elf_prstatus *prstatus, CPUX86State *env,
}
static int x86_write_elf64_note(WriteCoreDumpFunction f, CPUX86State *env,
int id, void *opaque)
int id, DumpState *s)
{
x86_elf_prstatus prstatus;
Elf64_Nhdr *note;
@@ -170,7 +170,7 @@ static int x86_write_elf64_note(WriteCoreDumpFunction f, CPUX86State *env,
buf += ROUND_UP(name_size, 4);
memcpy(buf, &prstatus, sizeof(prstatus));
ret = f(note, note_size, opaque);
ret = f(note, note_size, s);
g_free(note);
if (ret < 0) {
return -1;
@@ -180,7 +180,7 @@ static int x86_write_elf64_note(WriteCoreDumpFunction f, CPUX86State *env,
}
int x86_cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cs,
int cpuid, void *opaque)
int cpuid, DumpState *s)
{
X86CPU *cpu = X86_CPU(cs);
int ret;
@@ -189,10 +189,10 @@ int x86_cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cs,
bool lma = !!(first_x86_cpu->env.hflags & HF_LMA_MASK);
if (lma) {
ret = x86_64_write_elf64_note(f, &cpu->env, cpuid, opaque);
ret = x86_64_write_elf64_note(f, &cpu->env, cpuid, s);
} else {
#endif
ret = x86_write_elf64_note(f, &cpu->env, cpuid, opaque);
ret = x86_write_elf64_note(f, &cpu->env, cpuid, s);
#ifdef TARGET_X86_64
}
#endif
@@ -201,7 +201,7 @@ int x86_cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cs,
}
int x86_cpu_write_elf32_note(WriteCoreDumpFunction f, CPUState *cs,
int cpuid, void *opaque)
int cpuid, DumpState *s)
{
X86CPU *cpu = X86_CPU(cs);
x86_elf_prstatus prstatus;
@@ -224,7 +224,7 @@ int x86_cpu_write_elf32_note(WriteCoreDumpFunction f, CPUState *cs,
buf += ROUND_UP(name_size, 4);
memcpy(buf, &prstatus, sizeof(prstatus));
ret = f(note, note_size, opaque);
ret = f(note, note_size, s);
g_free(note);
if (ret < 0) {
return -1;
@@ -329,7 +329,7 @@ static void qemu_get_cpustate(QEMUCPUState *s, CPUX86State *env)
static inline int cpu_write_qemu_note(WriteCoreDumpFunction f,
CPUX86State *env,
void *opaque,
DumpState *s,
int type)
{
QEMUCPUState state;
@@ -369,7 +369,7 @@ static inline int cpu_write_qemu_note(WriteCoreDumpFunction f,
buf += ROUND_UP(name_size, 4);
memcpy(buf, &state, sizeof(state));
ret = f(note, note_size, opaque);
ret = f(note, note_size, s);
g_free(note);
if (ret < 0) {
return -1;
@@ -379,19 +379,19 @@ static inline int cpu_write_qemu_note(WriteCoreDumpFunction f,
}
int x86_cpu_write_elf64_qemunote(WriteCoreDumpFunction f, CPUState *cs,
void *opaque)
DumpState *s)
{
X86CPU *cpu = X86_CPU(cs);
return cpu_write_qemu_note(f, &cpu->env, opaque, 1);
return cpu_write_qemu_note(f, &cpu->env, s, 1);
}
int x86_cpu_write_elf32_qemunote(WriteCoreDumpFunction f, CPUState *cs,
void *opaque)
DumpState *s)
{
X86CPU *cpu = X86_CPU(cs);
return cpu_write_qemu_note(f, &cpu->env, opaque, 0);
return cpu_write_qemu_note(f, &cpu->env, s, 0);
}
int cpu_get_dump_info(ArchDumpInfo *info,
target/i386/cpu.h
+4 -4
View File
@@ -1938,13 +1938,13 @@ extern const VMStateDescription vmstate_x86_cpu;
int x86_cpu_pending_interrupt(CPUState *cs, int interrupt_request);
int x86_cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cpu,
int cpuid, void *opaque);
int cpuid, DumpState *s);
int x86_cpu_write_elf32_note(WriteCoreDumpFunction f, CPUState *cpu,
int cpuid, void *opaque);
int cpuid, DumpState *s);
int x86_cpu_write_elf64_qemunote(WriteCoreDumpFunction f, CPUState *cpu,
void *opaque);
DumpState *s);
int x86_cpu_write_elf32_qemunote(WriteCoreDumpFunction f, CPUState *cpu,
void *opaque);
DumpState *s);
void x86_cpu_get_memory_mapping(CPUState *cpu, MemoryMappingList *list,
Error **errp);
target/ppc/arch_dump.c
+9 -9
View File
@@ -270,23 +270,23 @@ ssize_t cpu_get_note_size(int class, int machine, int nr_cpus)
static int ppc_write_all_elf_notes(const char *note_name,
WriteCoreDumpFunction f,
PowerPCCPU *cpu, int id,
void *opaque)
DumpState *s)
{
NoteFuncArg arg = { .state = opaque };
NoteFuncArg arg = { .state = s };
int ret = -1;
int note_size;
const NoteFuncDesc *nf;
for (nf = note_func; nf->note_contents_func; nf++) {
arg.note.hdr.n_namesz = cpu_to_dump32(opaque, sizeof(arg.note.name));
arg.note.hdr.n_descsz = cpu_to_dump32(opaque, nf->contents_size);
arg.note.hdr.n_namesz = cpu_to_dump32(s, sizeof(arg.note.name));
arg.note.hdr.n_descsz = cpu_to_dump32(s, nf->contents_size);
strncpy(arg.note.name, note_name, sizeof(arg.note.name));
(*nf->note_contents_func)(&arg, cpu);
note_size =
sizeof(arg.note) - sizeof(arg.note.contents) + nf->contents_size;
ret = f(&arg.note, note_size, opaque);
ret = f(&arg.note, note_size, s);
if (ret < 0) {
return -1;
}
@@ -295,15 +295,15 @@ static int ppc_write_all_elf_notes(const char *note_name,
}
int ppc64_cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cs,
int cpuid, void *opaque)
int cpuid, DumpState *s)
{
PowerPCCPU *cpu = POWERPC_CPU(cs);
return ppc_write_all_elf_notes("CORE", f, cpu, cpuid, opaque);
return ppc_write_all_elf_notes("CORE", f, cpu, cpuid, s);
}
int ppc32_cpu_write_elf32_note(WriteCoreDumpFunction f, CPUState *cs,
int cpuid, void *opaque)
int cpuid, DumpState *s)
{
PowerPCCPU *cpu = POWERPC_CPU(cs);
return ppc_write_all_elf_notes("CORE", f, cpu, cpuid, opaque);
return ppc_write_all_elf_notes("CORE", f, cpu, cpuid, s);
}
target/ppc/cpu.h
+2 -2
View File
@@ -1354,9 +1354,9 @@ void ppc_gdb_gen_spr_xml(PowerPCCPU *cpu);
const char *ppc_gdb_get_dynamic_xml(CPUState *cs, const char *xml_name);
#endif
int ppc64_cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cs,
int cpuid, void *opaque);
int cpuid, DumpState *s);
int ppc32_cpu_write_elf32_note(WriteCoreDumpFunction f, CPUState *cs,
int cpuid, void *opaque);
int cpuid, DumpState *s);
#ifndef CONFIG_USER_ONLY
void ppc_cpu_do_interrupt(CPUState *cpu);
bool ppc_cpu_exec_interrupt(CPUState *cpu, int int_req);
target/riscv/arch_dump.c
+2 -4
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@@ -64,12 +64,11 @@ static void riscv64_note_init(struct riscv64_note *note, DumpState *s,
}
int riscv_cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cs,
int cpuid, void *opaque)
int cpuid, DumpState *s)
{
struct riscv64_note note;
RISCVCPU *cpu = RISCV_CPU(cs);
CPURISCVState *env = &cpu->env;
DumpState *s = opaque;
int ret, i = 0;
const char name[] = "CORE";
@@ -134,12 +133,11 @@ static void riscv32_note_init(struct riscv32_note *note, DumpState *s,
}
int riscv_cpu_write_elf32_note(WriteCoreDumpFunction f, CPUState *cs,
int cpuid, void *opaque)
int cpuid, DumpState *s)
{
struct riscv32_note note;
RISCVCPU *cpu = RISCV_CPU(cs);
CPURISCVState *env = &cpu->env;
DumpState *s = opaque;
int ret, i;
const char name[] = "CORE";
target/riscv/cpu.h
+2 -2
View File
@@ -534,9 +534,9 @@ extern const char * const riscv_fpr_regnames[];
const char *riscv_cpu_get_trap_name(target_ulong cause, bool async);
void riscv_cpu_do_interrupt(CPUState *cpu);
int riscv_cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cs,
int cpuid, void *opaque);
int cpuid, DumpState *s);
int riscv_cpu_write_elf32_note(WriteCoreDumpFunction f, CPUState *cs,
int cpuid, void *opaque);
int cpuid, DumpState *s);
int riscv_cpu_gdb_read_register(CPUState *cpu, GByteArray *buf, int reg);
int riscv_cpu_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg);
int riscv_cpu_hviprio_index2irq(int index, int *out_irq, int *out_rdzero);
target/s390x/arch_dump.c
+5 -5
View File
@@ -204,7 +204,7 @@ static const NoteFuncDesc note_linux[] = {
static int s390x_write_elf64_notes(const char *note_name,
WriteCoreDumpFunction f,
S390CPU *cpu, int id,
void *opaque,
DumpState *s,
const NoteFuncDesc *funcs)
{
Note note;
@@ -222,7 +222,7 @@ static int s390x_write_elf64_notes(const char *note_name,
(*nf->note_contents_func)(&note, cpu, id);
note_size = sizeof(note) - sizeof(note.contents) + nf->contents_size;
ret = f(&note, note_size, opaque);
ret = f(&note, note_size, s);
if (ret < 0) {
return -1;
@@ -235,16 +235,16 @@ static int s390x_write_elf64_notes(const char *note_name,
int s390_cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cs,
int cpuid, void *opaque)
int cpuid, DumpState *s)
{
S390CPU *cpu = S390_CPU(cs);
int r;
r = s390x_write_elf64_notes("CORE", f, cpu, cpuid, opaque, note_core);
r = s390x_write_elf64_notes("CORE", f, cpu, cpuid, s, note_core);
if (r) {
return r;
}
return s390x_write_elf64_notes("LINUX", f, cpu, cpuid, opaque, note_linux);
return s390x_write_elf64_notes("LINUX", f, cpu, cpuid, s, note_linux);
}
int cpu_get_dump_info(ArchDumpInfo *info,
target/s390x/s390x-internal.h
+1 -1
View File
@@ -227,7 +227,7 @@ static inline hwaddr decode_basedisp_s(CPUS390XState *env, uint32_t ipb,
/* arch_dump.c */
int s390_cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cs,
int cpuid, void *opaque);
int cpuid, DumpState *s);
/* cc_helper.c */