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https://gitlab.com/qemu-project/qemu.git
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259c2aae8d
Keep cpus.c related to vCPU scheduling, move the QMP handlers
related to dumping physical memory to file to their own unit.
Fix a pair of checkpatch.pl errors doing so:
ERROR: braces {} are necessary for all arms of this statement
#185: FILE: system/physmem-qmp-cmds.c:51:
+ if (l > size)
[...]
Signed-off-by: Philippe Mathieu-Daudé <philmd@oss.qualcomm.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20260812211708.92824-16-philmd@oss.qualcomm.com>
107 lines
2.5 KiB
C
107 lines
2.5 KiB
C
/*
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* QMP commands to dump physical memory
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*
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* Copyright (c) 2003-2008 Fabrice Bellard
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* Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "qemu/osdep.h"
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#include "qapi/error.h"
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#include "qapi/qapi-commands-machine.h"
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#include "qapi/qmp/qerror.h"
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#include "hw/core/cpu.h"
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#include "system/physmem.h"
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#include "migration/misc.h"
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void qmp_memsave(uint64_t addr, uint64_t size, const char *filename,
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bool has_cpu, int64_t cpu_index, Error **errp)
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{
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FILE *f;
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uint64_t l;
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CPUState *cpu;
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uint8_t buf[1024];
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uint64_t orig_addr = addr, orig_size = size;
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if (migration_guest_ram_loading()) {
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error_setg(errp, "Guest memory access not allowed during migration");
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return;
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}
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if (!has_cpu) {
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cpu_index = 0;
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}
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cpu = qemu_get_cpu(cpu_index);
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if (cpu == NULL) {
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error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "cpu-index",
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"a CPU number");
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return;
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}
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f = fopen(filename, "wb");
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if (!f) {
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error_setg_file_open(errp, errno, filename);
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return;
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}
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while (size != 0) {
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l = sizeof(buf);
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if (l > size) {
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l = size;
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}
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if (cpu_memory_rw_debug(cpu, addr, buf, l, 0) != 0) {
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error_setg(errp, "Invalid addr 0x%016" PRIx64 "/size %" PRIu64
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" specified", orig_addr, orig_size);
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goto exit;
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}
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if (fwrite(buf, 1, l, f) != l) {
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error_setg(errp, "writing memory to '%s' failed",
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filename);
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goto exit;
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}
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addr += l;
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size -= l;
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}
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exit:
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fclose(f);
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}
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void qmp_pmemsave(uint64_t addr, uint64_t size, const char *filename,
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Error **errp)
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{
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FILE *f;
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uint64_t l;
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uint8_t buf[1024];
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if (migration_guest_ram_loading()) {
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error_setg(errp, "Guest memory access not allowed during migration");
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return;
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}
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f = fopen(filename, "wb");
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if (!f) {
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error_setg_file_open(errp, errno, filename);
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return;
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}
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while (size != 0) {
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l = sizeof(buf);
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if (l > size) {
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l = size;
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}
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physical_memory_read(addr, buf, l);
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if (fwrite(buf, 1, l, f) != l) {
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error_setg(errp, "writing memory to '%s' failed",
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filename);
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goto exit;
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}
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addr += l;
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size -= l;
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}
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exit:
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fclose(f);
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}
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