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migration/postcopy: use QEMU_IS_ALIGNED to replace host_offset 

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>
Message-Id: <20190806004648.8659-3-richardw.yang@linux.intel.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
This commit is contained in:
Wei Yang 2019-08-06 08:46:48 +08:00 committed by Dr. David Alan Gilbert
parent dad45ab2be
commit 9dec3cc3f4
1 changed files with 2 additions and 5 deletions
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7
migration/ram.c
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@ -2955,14 +2955,12 @@ 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);
@ -2974,10 +2972,9 @@ 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);