[PULL 12/18] migration: Add pss.postcopy_requested status

2022-04-21 Thread Dr. David Alan Gilbert (git) 
From: Peter Xu 

This boolean flag shows whether the current page during migration is triggered
by postcopy or not.  Then in ram_save_host_page() and deeper stack we'll be
able to have a reference on the priority of this page.

Reviewed-by: Dr. David Alan Gilbert 
Signed-off-by: Peter Xu 
Message-Id: <20220331150857.74406-4-pet...@redhat.com>
Reviewed-by: Daniel P. Berrangé 
Signed-off-by: Dr. David Alan Gilbert 
---
 migration/ram.c | 6 ++
 1 file changed, 6 insertions(+)

diff --git a/migration/ram.c b/migration/ram.c
index 3532f64ecb..bfcd45a36e 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -414,6 +414,8 @@ struct PageSearchStatus {
 unsigned long page;
 /* Set once we wrap around */
 bool complete_round;
+/* Whether current page is explicitly requested by postcopy */
+bool postcopy_requested;
 };
 typedef struct PageSearchStatus PageSearchStatus;
 
@@ -1487,6 +1489,9 @@ retry:
  */
 static bool find_dirty_block(RAMState *rs, PageSearchStatus *pss, bool *again)
 {
+/* This is not a postcopy requested page */
+pss->postcopy_requested = false;
+
 pss->page = migration_bitmap_find_dirty(rs, pss->block, pss->page);
 if (pss->complete_round && pss->block == rs->last_seen_block &&
 pss->page >= rs->last_page) {
@@ -1981,6 +1986,7 @@ static bool get_queued_page(RAMState *rs, 
PageSearchStatus *pss)
  * really rare.
  */
 pss->complete_round = false;
+pss->postcopy_requested = true;
 }
 
 return !!block;
-- 
2.35.1

[PULL 12/18] migration: Add pss.postcopy_requested status

2022-04-21 Thread Dr. David Alan Gilbert (git) 
From: Peter Xu 

This boolean flag shows whether the current page during migration is triggered
by postcopy or not.  Then in ram_save_host_page() and deeper stack we'll be
able to have a reference on the priority of this page.

Reviewed-by: Dr. David Alan Gilbert 
Signed-off-by: Peter Xu 
Message-Id: <20220331150857.74406-4-pet...@redhat.com>
Reviewed-by: Daniel P. Berrangé 
Signed-off-by: Dr. David Alan Gilbert 
---
 migration/ram.c | 6 ++
 1 file changed, 6 insertions(+)

diff --git a/migration/ram.c b/migration/ram.c
index 3532f64ecb..bfcd45a36e 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -414,6 +414,8 @@ struct PageSearchStatus {
 unsigned long page;
 /* Set once we wrap around */
 bool complete_round;
+/* Whether current page is explicitly requested by postcopy */
+bool postcopy_requested;
 };
 typedef struct PageSearchStatus PageSearchStatus;
 
@@ -1487,6 +1489,9 @@ retry:
  */
 static bool find_dirty_block(RAMState *rs, PageSearchStatus *pss, bool *again)
 {
+/* This is not a postcopy requested page */
+pss->postcopy_requested = false;
+
 pss->page = migration_bitmap_find_dirty(rs, pss->block, pss->page);
 if (pss->complete_round && pss->block == rs->last_seen_block &&
 pss->page >= rs->last_page) {
@@ -1981,6 +1986,7 @@ static bool get_queued_page(RAMState *rs, 
PageSearchStatus *pss)
  * really rare.
  */
 pss->complete_round = false;
+pss->postcopy_requested = true;
 }
 
 return !!block;
-- 
2.35.1