motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-03 07:43:54 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

pc: fixes

Browse source 
This includes nvdimm persistence fixes queued before the release.
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
 -----BEGIN PGP SIGNATURE-----
 
 iQEcBAABAgAGBQJbepoTAAoJECgfDbjSjVRpLioH/3BPps8FLh4x2gZSq3B+u72O
 RYUA3I3TilEGyc9yf8o7e1Hf+pQAJBEmulcnKxXFVWZIJ1GVLPt4NZCMQGiPDnJL
 +RCT/Q64PUy09hRjddAasikrvXa4YOsRgBgJJToO7v9PSQSaU3fC7O3hNea7KcF/
 C4SSqkUgxyDhCCYHHblpKxFz/wtwy4ZaCGSdozIdmKNPJ6/ye8wOQ1Mq9e1Mwp18
 S6ilJub5IwB6aM2KVMmX4AFomF4u2cn153ts8fI+Dyo4/NE6P4+viDlz3BOBKdzm
 kmd49h6/n4Lenoo4oI1yNHSuIJJTVfvnoLu6rG7mPbQKgxNd1uN4KuUIygU5PCY=
 =Xcaj
 -----END PGP SIGNATURE-----

Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging

pc: fixes

This includes nvdimm persistence fixes queued before the release.

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

# gpg: Signature made Mon 20 Aug 2018 11:38:11 BST
# gpg:                using RSA key 281F0DB8D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>"
# gpg:                 aka "Michael S. Tsirkin <mst@redhat.com>"
# Primary key fingerprint: 0270 606B 6F3C DF3D 0B17  0970 C350 3912 AFBE 8E67
#      Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA  8A0D 281F 0DB8 D28D 5469

* remotes/mst/tags/for_upstream:
  migration/ram: ensure write persistence on loading all data to PMEM.
  migration/ram: Add check and info message to nvdimm post copy.
  mem/nvdimm: ensure write persistence to PMEM in label emulation
  hostmem-file: add the 'pmem' option
  configure: add libpmem support
  memory, exec: switch file ram allocation functions to 'flags' parameters
  memory, exec: Expose all memory block related flags.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2018-08-21 10:23:53 +01:00
commit 55f4e79d79
12 changed files with 235 additions and 36 deletions
Download patch file Download diff file Expand all files Collapse all files

38
exec.c
View file

@ -87,26 +87,6 @@ AddressSpace address_space_memory;
MemoryRegion io_mem_rom, io_mem_notdirty;
static MemoryRegion io_mem_unassigned;
/* RAM is pre-allocated and passed into qemu_ram_alloc_from_ptr */
#define RAM_PREALLOC (1 << 0)
/* RAM is mmap-ed with MAP_SHARED */
#define RAM_SHARED (1 << 1)
/* Only a portion of RAM (used_length) is actually used, and migrated.
* This used_length size can change across reboots.
*/
#define RAM_RESIZEABLE (1 << 2)
/* UFFDIO_ZEROPAGE is available on this RAMBlock to atomically
* zero the page and wake waiting processes.
* (Set during postcopy)
*/
#define RAM_UF_ZEROPAGE (1 << 3)
/* RAM can be migrated */
#define RAM_MIGRATABLE (1 << 4)
#endif
#ifdef TARGET_PAGE_BITS_VARY
@ -2252,13 +2232,16 @@ static void ram_block_add(RAMBlock *new_block, Error **errp, bool shared)
#ifdef __linux__
RAMBlock *qemu_ram_alloc_from_fd(ram_addr_t size, MemoryRegion *mr,
bool share, int fd,
uint32_t ram_flags, int fd,
Error **errp)
{
RAMBlock *new_block;
Error *local_err = NULL;
int64_t file_size;
/* Just support these ram flags by now. */
assert((ram_flags & ~(RAM_SHARED | RAM_PMEM)) == 0);
if (xen_enabled()) {
error_setg(errp, "-mem-path not supported with Xen");
return NULL;
@ -2294,14 +2277,14 @@ RAMBlock *qemu_ram_alloc_from_fd(ram_addr_t size, MemoryRegion *mr,
new_block->mr = mr;
new_block->used_length = size;
new_block->max_length = size;
new_block->flags = share ? RAM_SHARED : 0;
new_block->flags = ram_flags;
new_block->host = file_ram_alloc(new_block, size, fd, !file_size, errp);
if (!new_block->host) {
g_free(new_block);
return NULL;
}
ram_block_add(new_block, &local_err, share);
ram_block_add(new_block, &local_err, ram_flags & RAM_SHARED);
if (local_err) {
g_free(new_block);
error_propagate(errp, local_err);
@ -2313,7 +2296,7 @@ RAMBlock *qemu_ram_alloc_from_fd(ram_addr_t size, MemoryRegion *mr,
RAMBlock *qemu_ram_alloc_from_file(ram_addr_t size, MemoryRegion *mr,
bool share, const char *mem_path,
uint32_t ram_flags, const char *mem_path,
Error **errp)
{
int fd;
@ -2325,7 +2308,7 @@ RAMBlock *qemu_ram_alloc_from_file(ram_addr_t size, MemoryRegion *mr,
return NULL;
}
block = qemu_ram_alloc_from_fd(size, mr, share, fd, errp);
block = qemu_ram_alloc_from_fd(size, mr, ram_flags, fd, errp);
if (!block) {
if (created) {
unlink(mem_path);
@ -4086,6 +4069,11 @@ err:
return ret;
}
bool ramblock_is_pmem(RAMBlock *rb)
{
return rb->flags & RAM_PMEM;
}
#endif
void page_size_init(void)