diff options
Diffstat (limited to 'exec.c')
| -rw-r--r-- | exec.c | 21 |
1 files changed, 21 insertions, 0 deletions
@@ -2475,6 +2475,24 @@ static ram_addr_t last_ram_offset(void) return last; } +static void qemu_ram_setup_dump(void *addr, ram_addr_t size) +{ + int ret; + QemuOpts *machine_opts; + + /* Use MADV_DONTDUMP, if user doesn't want the guest memory in the core */ + machine_opts = qemu_opts_find(qemu_find_opts("machine"), 0); + if (machine_opts && + !qemu_opt_get_bool(machine_opts, "dump-guest-core", true)) { + ret = qemu_madvise(addr, size, QEMU_MADV_DONTDUMP); + if (ret) { + perror("qemu_madvise"); + fprintf(stderr, "madvise doesn't support MADV_DONTDUMP, " + "but dump_guest_core=off specified\n"); + } + } +} + void qemu_ram_set_idstr(ram_addr_t addr, const char *name, DeviceState *dev) { RAMBlock *new_block, *block; @@ -2554,6 +2572,8 @@ ram_addr_t qemu_ram_alloc_from_ptr(ram_addr_t size, void *host, 0, size >> TARGET_PAGE_BITS); cpu_physical_memory_set_dirty_range(new_block->offset, size, 0xff); + qemu_ram_setup_dump(new_block->host, size); + if (kvm_enabled()) kvm_setup_guest_memory(new_block->host, size); @@ -2670,6 +2690,7 @@ void qemu_ram_remap(ram_addr_t addr, ram_addr_t length) exit(1); } qemu_madvise(vaddr, length, QEMU_MADV_MERGEABLE); + qemu_ram_setup_dump(vaddr, length); } return; } |