[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [PATCHv5 07/10] migration: add an indicator for bulk state
From: |
Peter Lieven |
Subject: |
[Qemu-devel] [PATCHv5 07/10] migration: add an indicator for bulk state of ram migration |
Date: |
Tue, 26 Mar 2013 10:58:36 +0100 |
the first round of ram transfer is special since all pages
are dirty and thus all memory pages are transferred to
the target. this patch adds a boolean variable to track
this stage.
Signed-off-by: Peter Lieven <address@hidden>
Reviewed-by: Eric Blake <address@hidden>
Reviewed-by: Orit Wasserman <address@hidden>
---
arch_init.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch_init.c b/arch_init.c
index dd5deff..1291bd2 100644
--- a/arch_init.c
+++ b/arch_init.c
@@ -319,6 +319,7 @@ static ram_addr_t last_offset;
static unsigned long *migration_bitmap;
static uint64_t migration_dirty_pages;
static uint32_t last_version;
+static bool ram_bulk_stage;
static inline
ram_addr_t migration_bitmap_find_and_reset_dirty(MemoryRegion *mr,
@@ -426,6 +427,7 @@ static int ram_save_block(QEMUFile *f, bool last_stage)
if (!block) {
block = QTAILQ_FIRST(&ram_list.blocks);
complete_round = true;
+ ram_bulk_stage = false;
}
} else {
uint8_t *p;
@@ -529,6 +531,7 @@ static void reset_ram_globals(void)
last_sent_block = NULL;
last_offset = 0;
last_version = ram_list.version;
+ ram_bulk_stage = true;
}
#define MAX_WAIT 50 /* ms, half buffered_file limit */
--
1.7.9.5
- [Qemu-devel] [PATCHv5 00/10] buffer_is_zero / migration optimizations, Peter Lieven, 2013/03/26
- [Qemu-devel] [PATCHv5 04/10] buffer_is_zero: use vector optimizations if possible, Peter Lieven, 2013/03/26
- [Qemu-devel] [PATCHv5 05/10] bitops: unroll while loop in find_next_bit(), Peter Lieven, 2013/03/26
- [Qemu-devel] [PATCHv5 08/10] migration: do not sent zero pages in bulk stage, Peter Lieven, 2013/03/26
- [Qemu-devel] [PATCHv5 09/10] migration: do not search dirty pages in bulk stage, Peter Lieven, 2013/03/26
- [Qemu-devel] [PATCHv5 07/10] migration: add an indicator for bulk state of ram migration,
Peter Lieven <=
- [Qemu-devel] [PATCHv5 06/10] migration: search for zero instead of dup pages, Peter Lieven, 2013/03/26
- [Qemu-devel] [PATCHv5 10/10] migration: use XBZRLE only after bulk stage, Peter Lieven, 2013/03/26
- [Qemu-devel] [PATCHv5 01/10] move vector definitions to qemu-common.h, Peter Lieven, 2013/03/26
- [Qemu-devel] [PATCHv5 02/10] add a zero splat vector to qemu-common.h, Peter Lieven, 2013/03/26
[Qemu-devel] [PATCHv5 03/10] cutils: add a function to find non-zero content in a buffer, Peter Lieven, 2013/03/26