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[Qemu-devel] [PULL 07/33] migration/postcopy: reduce one operation to ca
From: |
Dr. David Alan Gilbert (git) |
Subject: |
[Qemu-devel] [PULL 07/33] migration/postcopy: reduce one operation to calculate fixup_start_addr |
Date: |
Thu, 15 Aug 2019 17:34:38 +0100 |
From: Wei Yang <address@hidden>
Use the same way for run_end to calculate run_start, which saves one
operation.
Signed-off-by: Wei Yang <address@hidden>
Message-Id: <address@hidden>
Reviewed-by: Dr. David Alan Gilbert <address@hidden>
Signed-off-by: Dr. David Alan Gilbert <address@hidden>
---
migration/ram.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/migration/ram.c b/migration/ram.c
index 4bb5e24459..da399f2c8a 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -2973,10 +2973,12 @@ static void
postcopy_chunk_hostpages_pass(MigrationState *ms, bool unsent_pass,
host_offset = run_start % host_ratio;
if (host_offset) {
do_fixup = true;
- run_start -= host_offset;
- fixup_start_addr = run_start;
- /* For the next pass */
- run_start = run_start + host_ratio;
+ fixup_start_addr = run_start - host_offset;
+ /*
+ * This host page has gone, the next loop iteration starts
+ * from after the fixup
+ */
+ run_start = fixup_start_addr + host_ratio;
} else {
/* Find the end of this run */
unsigned long run_end;
--
2.21.0
- [Qemu-devel] [PULL 00/33] migration queue, Dr. David Alan Gilbert (git), 2019/08/15
- [Qemu-devel] [PULL 01/33] migration: Add error_desc for file channel errors, Dr. David Alan Gilbert (git), 2019/08/15
- [Qemu-devel] [PULL 02/33] hw/net: fix vmxnet3 live migration, Dr. David Alan Gilbert (git), 2019/08/15
- [Qemu-devel] [PULL 03/33] migration: consolidate time info into populate_time_info, Dr. David Alan Gilbert (git), 2019/08/15
- [Qemu-devel] [PULL 05/33] migration/postcopy: break the loop when there is no more page to discard, Dr. David Alan Gilbert (git), 2019/08/15
- [Qemu-devel] [PULL 04/33] migration/postcopy: the valid condition is one less then end, Dr. David Alan Gilbert (git), 2019/08/15
- [Qemu-devel] [PULL 06/33] migration/postcopy: discard_length must not be 0, Dr. David Alan Gilbert (git), 2019/08/15
- [Qemu-devel] [PULL 07/33] migration/postcopy: reduce one operation to calculate fixup_start_addr,
Dr. David Alan Gilbert (git) <=
- [Qemu-devel] [PULL 08/33] migration/postcopy: do_fixup is true when host_offset is non-zero, Dr. David Alan Gilbert (git), 2019/08/15
- [Qemu-devel] [PULL 09/33] migration/savevm: flush file for iterable_only case, Dr. David Alan Gilbert (git), 2019/08/15
- [Qemu-devel] [PULL 10/33] migration/savevm: split qemu_savevm_state_complete_precopy() into two parts, Dr. David Alan Gilbert (git), 2019/08/15
- [Qemu-devel] [PULL 11/33] migration/savevm: move non SaveStateEntry condition check out of iteration, Dr. David Alan Gilbert (git), 2019/08/15
- [Qemu-devel] [PULL 12/33] migration/postcopy: PostcopyState is already set in loadvm_postcopy_handle_advise(), Dr. David Alan Gilbert (git), 2019/08/15
- [Qemu-devel] [PULL 13/33] migration/postcopy: start_postcopy could be true only when migrate_postcopy() return true, Dr. David Alan Gilbert (git), 2019/08/15
- [Qemu-devel] [PULL 14/33] migration: use migration_in_postcopy() to check POSTCOPY_ACTIVE, Dr. David Alan Gilbert (git), 2019/08/15
- [Qemu-devel] [PULL 15/33] migration: just pass RAMBlock is enough, Dr. David Alan Gilbert (git), 2019/08/15
- [Qemu-devel] [PULL 17/33] migration: return -EINVAL directly when version_id mismatch, Dr. David Alan Gilbert (git), 2019/08/15
- [Qemu-devel] [PULL 16/33] migration: equation is more proper than and to check LOADVM_QUIT, Dr. David Alan Gilbert (git), 2019/08/15