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Round up RAMBlock sizes to host page sizes 

RAMBlocks that are not a multiple of host pages in length
cause problems for postcopy (I've seen an ACPI table on aarch64
be 5k in length - i.e. 5x target-page), so round RAMBlock sizes
up to a host-page.

This potentially breaks migration compatibility due to changes
in RAMBlock sizes; however:
   1) x86 and s390 I think always have host=target page size
   2) When I've tried on Power the block sizes already seem aligned.
   3) I don't think there's anything else that maintains per-version
      machine-types for compatibility.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
This commit is contained in:
Dr. David Alan Gilbert 2015-11-05 18:11:16 +00:00 committed by Juan Quintela
parent 99e314ebca
commit 4ed023ce2a
1 changed files with 4 additions and 4 deletions
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8
exec.c
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@ -1452,7 +1452,7 @@ int qemu_ram_resize(ram_addr_t base, ram_addr_t newsize, Error **errp)
assert(block);
newsize = TARGET_PAGE_ALIGN(newsize);
newsize = HOST_PAGE_ALIGN(newsize);
if (block->used_length == newsize) {
return 0;
@ -1596,7 +1596,7 @@ ram_addr_t qemu_ram_alloc_from_file(ram_addr_t size, MemoryRegion *mr,
return -1;
}
size = TARGET_PAGE_ALIGN(size);
size = HOST_PAGE_ALIGN(size);
new_block = g_malloc0(sizeof(*new_block));
new_block->mr = mr;
new_block->used_length = size;
@ -1632,8 +1632,8 @@ ram_addr_t qemu_ram_alloc_internal(ram_addr_t size, ram_addr_t max_size,
ram_addr_t addr;
Error *local_err = NULL;
size = TARGET_PAGE_ALIGN(size);
max_size = TARGET_PAGE_ALIGN(max_size);
size = HOST_PAGE_ALIGN(size);
max_size = HOST_PAGE_ALIGN(max_size);
new_block = g_malloc0(sizeof(*new_block));
new_block->mr = mr;
new_block->resized = resized;