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[Qemu-devel] [PATCH] migration: check length directly to make sure the r
From: |
Wei Yang |
Subject: |
[Qemu-devel] [PATCH] migration: check length directly to make sure the range is aligned |
Date: |
Fri, 12 Jul 2019 11:27:04 +0800 |
Since the start addr is already checked, to make sure the range is
aligned, checking the length is enough.
Signed-off-by: Wei Yang <address@hidden>
---
exec.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/exec.c b/exec.c
index 50ea9c5aaa..8fa980baae 100644
--- a/exec.c
+++ b/exec.c
@@ -4067,10 +4067,9 @@ int ram_block_discard_range(RAMBlock *rb, uint64_t
start, size_t length)
if ((start + length) <= rb->used_length) {
bool need_madvise, need_fallocate;
- uint8_t *host_endaddr = host_startaddr + length;
- if ((uintptr_t)host_endaddr & (rb->page_size - 1)) {
- error_report("ram_block_discard_range: Unaligned end address: %p",
- host_endaddr);
+ if (length & (rb->page_size - 1)) {
+ error_report("ram_block_discard_range: Unaligned length: %lx",
+ length);
goto err;
}
--
2.17.1
- [Qemu-devel] [PATCH] migration: check length directly to make sure the range is aligned,
Wei Yang <=