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pc: resizeable ROM blocks

Browse source 
This makes ROM blocks resizeable.  This infrastructure is required for other
 functionality we have queued.
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging

pc: resizeable ROM blocks

This makes ROM blocks resizeable.  This infrastructure is required for other
functionality we have queued.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

# gpg: Signature made Thu 08 Jan 2015 11:19:24 GMT using RSA key ID D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>"
# gpg:                 aka "Michael S. Tsirkin <mst@redhat.com>"

* remotes/mst/tags/for_upstream:
  acpi-build: make ROMs RAM blocks resizeable
  memory: API to allocate resizeable RAM MR
  arch_init: support resizing on incoming migration
  exec: qemu_ram_alloc_resizeable, qemu_ram_resize
  exec: split length -> used_length/max_length
  exec: cpu_physical_memory_set/clear_dirty_range
  memory: add memory_region_set_size

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2015-01-10 21:02:23 +00:00
commit aaf0301917
10 changed files with 249 additions and 60 deletions
Download patch file Download diff file Expand all files Collapse all files

18
hw/core/loader.c
View file

@ -724,12 +724,22 @@ static void rom_insert(Rom *rom)
QTAILQ_INSERT_TAIL(&roms, rom, next);
}
static void fw_cfg_resized(const char *id, uint64_t length, void *host)
{
if (fw_cfg) {
fw_cfg_modify_file(fw_cfg, id + strlen("/rom@"), host, length);
}
}
static void *rom_set_mr(Rom *rom, Object *owner, const char *name)
{
void *data;
rom->mr = g_malloc(sizeof(*rom->mr));
memory_region_init_ram(rom->mr, owner, name, rom->datasize, &error_abort);
memory_region_init_resizeable_ram(rom->mr, owner, name,
rom->datasize, rom->romsize,
fw_cfg_resized,
&error_abort);
memory_region_set_readonly(rom->mr, true);
vmstate_register_ram_global(rom->mr);
@ -824,7 +834,7 @@ err:
}
ram_addr_t rom_add_blob(const char *name, const void *blob, size_t len,
hwaddr addr, const char *fw_file_name,
size_t max_len, hwaddr addr, const char *fw_file_name,
FWCfgReadCallback fw_callback, void *callback_opaque)
{
Rom *rom;
@ -833,7 +843,7 @@ ram_addr_t rom_add_blob(const char *name, const void *blob, size_t len,
rom = g_malloc0(sizeof(*rom));
rom->name = g_strdup(name);
rom->addr = addr;
rom->romsize = len;
rom->romsize = max_len ? max_len : len;
rom->datasize = len;
rom->data = g_malloc0(rom->datasize);
memcpy(rom->data, blob, len);
@ -853,7 +863,7 @@ ram_addr_t rom_add_blob(const char *name, const void *blob, size_t len,
fw_cfg_add_file_callback(fw_cfg, fw_file_name,
fw_callback, callback_opaque,
data, rom->romsize);
data, rom->datasize);
}
return ret;
}