From: Wei Yang <richardw.yang@linux.intel.com>
To: qemu-devel@nongnu.org
Cc: Wei Yang <richardw.yang@linux.intel.com>,
dgilbert@redhat.com, quintela@redhat.com
Subject: [Qemu-devel] [PATCH 2/2] migration/postcopy: use QEMU_IS_ALIGNED to replace host_offset
Date: Tue, 6 Aug 2019 08:46:48 +0800 [thread overview]
Message-ID: <20190806004648.8659-3-richardw.yang@linux.intel.com> (raw)
In-Reply-To: <20190806004648.8659-1-richardw.yang@linux.intel.com>
Use QEMU_IS_ALIGNED for the check, it would be more consistent with
other align calculations.
Signed-off-by: Wei Yang <richardw.yang@linux.intel.com>
---
migration/ram.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/migration/ram.c b/migration/ram.c
index d86661a015..dfbf71c580 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -2956,14 +2956,12 @@ static void postcopy_chunk_hostpages_pass(MigrationState *ms, bool unsent_pass,
}
while (run_start < pages) {
- unsigned long host_offset;
/*
* If the start of this run of pages is in the middle of a host
* page, then we need to fixup this host page.
*/
- host_offset = run_start % host_ratio;
- if (!host_offset) {
+ if (QEMU_IS_ALIGNED(run_start, host_ratio)) {
/* Find the end of this run */
if (unsent_pass) {
run_start = find_next_bit(unsentmap, pages, run_start + 1);
@@ -2975,10 +2973,9 @@ static void postcopy_chunk_hostpages_pass(MigrationState *ms, bool unsent_pass,
* run doesn't finish at the end of a host page
* and we need to discard.
*/
- host_offset = run_start % host_ratio;
}
- if (host_offset) {
+ if (!QEMU_IS_ALIGNED(run_start, host_ratio)) {
unsigned long page;
unsigned long fixup_start_addr = QEMU_ALIGN_DOWN(run_start,
host_ratio);
--
2.17.1
next prev parent reply other threads:[~2019-08-06 0:49 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-06 0:46 [Qemu-devel] [PATCH 0/2] migration/postcopy: simplify postcopy_chunk_hostpages_pass Wei Yang
2019-08-06 0:46 ` [Qemu-devel] [PATCH 1/2] migration/postcopy: simplify calculation of run_start and fixup_start_addr Wei Yang
2019-08-06 14:51 ` Dr. David Alan Gilbert
2019-08-07 0:14 ` Wei Yang
2019-08-06 0:46 ` Wei Yang [this message]
2019-08-06 15:47 ` [Qemu-devel] [PATCH 2/2] migration/postcopy: use QEMU_IS_ALIGNED to replace host_offset Dr. David Alan Gilbert
2019-08-07 18:43 ` [Qemu-devel] [PATCH 0/2] migration/postcopy: simplify postcopy_chunk_hostpages_pass Dr. David Alan Gilbert
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