From: Michael S. Tsirkin <mst@redhat.com>
Date: Tue, 17 Feb 2015 09:15:30 +0000 (+0100)
Subject: exec: round up size on MR resize
X-Git-Tag: v2.3.0-rc0~34^2~103
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=129ddaf31be583fb7c97812e07e028661005ce42;p=thirdparty%2Fqemu.git

exec: round up size on MR resize

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 <mst@redhat.com>
Acked-by: Paolo Bonzini <ponzini@redhat.com>
---

diff --git a/exec.c b/exec.c
index c85321a38ba..6a5adab5022 100644
--- a/exec.c
+++ b/exec.c
@@ -1347,6 +1347,8 @@ 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;
     }