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[Qemu-devel] [PATCH 1/4] exec: round up size on MR resize
From: |
Michael S. Tsirkin |
Subject: |
[Qemu-devel] [PATCH 1/4] exec: round up size on MR resize |
Date: |
Tue, 17 Feb 2015 11:05:36 +0100 |
Block size must fundamentally be a multiple of target page size.
Aligning automatically removes need to worry about the alignment
from callers.
Note: the only caller of qemu_ram_resize (acpi) already happens to have
size padded to a power of 2, but we would like to drop the padding in
ACPI core, and don't want to expose target page size knowledge to ACPI.
Signed-off-by: Michael S. Tsirkin <address@hidden>
---
exec.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/exec.c b/exec.c
index 6b79ad1..2433406 100644
--- a/exec.c
+++ b/exec.c
@@ -1298,6 +1298,8 @@ int qemu_ram_resize(ram_addr_t base, ram_addr_t newsize,
Error **errp)
assert(block);
+ newsize = TARGET_PAGE_ALIGN(newsize);
+
if (block->used_length == newsize) {
return 0;
}
--
MST