Sometimes, it is need to move a portion of bitmap to another place
in a large bitmap, if overlap happens, the bitmap_copy can't not
work correctly, we need a new function to do this work.
Signed-off-by: Liang Li <liang.z...@intel.com>
---
include/qemu/bitmap.h | 13 +
1 file c
will not be
filtered out in this case.
The current implementation can not work with post copy, if post
copy is enabled, we simply ignore the free pages. Will make it
work later.
Signed-off-by: Liang Li <liang.z...@intel.com>
---
migration/ram.
m' should be migrated to
destination too.
Michael has other idea to solve this issue, but he is busy at the
moment, this patch can be used for test before his patch is ready.
Signed-off-by: Liang Li <liang.z...@intel.com>
---
hw/virtio/virtio-balloon.c | 36 ++--
1 f
Update the new feature bit definition for the new virt queue and
the request header struct to keep consistent with kernel side.
Signed-off-by: Liang Li <liang.z...@intel.com>
---
include/standard-headers/linux/virtio_balloon.h | 22 ++
1 file changed, 22 insertions(+)
Update the new feature bit definition and the page bitmap header
struct to keep consistent with kernel side.
Signed-off-by: Liang Li <liang.z...@intel.com>
---
include/standard-headers/linux/virtio_balloon.h | 19 +++
1 file changed, 19 insertions(+)
diff --git a/i
Since there in wrapper around madvise(), the virtio-balloon
code is able to work without the precompiled directive, the
directive can be removed.
Signed-off-by: Liang Li <liang.z...@intel.com>
Suggested-by: Thomas Huth <th...@redhat.com>
---
hw/virtio/virtio-balloon.c | 2 --
1 fil
Add a new function to get the vm's max pfn and a new function
to filter out the holes in the undressed free page bitmap to get
a tight free page bitmap. They are implemented on X86 and should
be implemented on other arches for live migration optimization.
Signed-off-by: Liang Li <lian
ture, inflating the
balloon to 7GB of a 8GB idle guest only takes 590ms, the
performance improvement is about 85%.
TODO: optimize stage a by allocating/freeing a chunk of pages
instead of a single page at a time.
Signed-off-by: Liang Li <liang.z...@intel.com>
Suggested-by: Michael S. Tsirkin <m.
to request free pages and query the status.
* Changed the virtio balloon interface.
* Addressed some of the comments of v1.
Liang Li (9):
virtio-balloon: Remove needless precompiled directive
virtio-balloon: update linux head file
virtio-balloon: speed up inflating & deflating pro
rom executing. So guest will not
update the memory status.
Commit 4eae2a657d is doing the right thing, but 's->stats_vq_elem'
should be treated as part of balloon device state and migrated to
destination if it's not NULL to make everything works well.
Signed-off-by: Liang Li <liang.z...@
rom executing. So guest will not
update the memory status.
Signed-off-by: Liang Li <liang.z...@intel.com>
Cc: Michael S. Tsirkin <m...@redhat.com>
Cc: Ladi Prosek <lpro...@redhat.com>
Cc: Paolo Bonzini <pbonz...@redhat.com>
---
hw/virtio/virtio-balloon.c | 8 +++-
1 file
Support the request for vm's free page information, response with
a page bitmap. QEMU can make use of this free page bitmap to speed
up live migration process by skipping process the free pages.
Signed-off-by: Liang Li <liang.z...@intel.com>
Cc: Michael S. Tsirkin <m...@redhat.com&g
will allow faster notifications using a bitmap down the road.
balloon_pfn_to_page() can be removed because it's useless.
Signed-off-by: Liang Li <liang.z...@intel.com>
Signed-off-by: Michael S. Tsirkin <m...@redhat.com>
Cc: Paolo Bonzini <pbonz...@redhat.com>
Cc: Corneli
Expose the function to get the max pfn, so it can be used in the
virtio-balloon device driver.
Signed-off-by: Liang Li <liang.z...@intel.com>
Cc: Andrew Morton <a...@linux-foundation.org>
Cc: Mel Gorman <mgor...@techsingularity.net>
Cc: Michael S. Tsirkin <m...@redhat.c
Save the free page info into a page bitmap, will be used in virtio
balloon device driver.
Signed-off-by: Liang Li <liang.z...@intel.com>
Cc: Andrew Morton <a...@linux-foundation.org>
Cc: Mel Gorman <mgor...@techsingularity.net>
Cc: Michael S. Tsirkin <m...@redhat.com>
ture, inflating the
balloon to 7GB of a 8GB idle guest only takes 590ms, the
performance improvement is about 85%.
TODO: optimize stage a by allocating/freeing a chunk of pages
instead of a single page at a time.
Signed-off-by: Liang Li <liang.z...@intel.com>
Suggested-by: Michael S. Tsirkin <m.
. And the VMM hypervisor can get some
of guest's runtime information through this virtual queue, e.g. the
guest's free page information, which can be used for live migration
optimization.
Signed-off-by: Liang Li <liang.z...@intel.com>
Cc: Michael S. Tsirkin <m...@redhat.com>
Cc: Paolo Bo
about the page bitmap. e.g. the page size, page bitmap length and
start pfn.
Signed-off-by: Liang Li <liang.z...@intel.com>
Cc: Michael S. Tsirkin <m...@redhat.com>
Cc: Paolo Bonzini <pbonz...@redhat.com>
Cc: Cornelia Huck <cornelia.h...@de.ibm.com>
Cc: Amit Shah <amit.s.
o v2:
* Abandon the patch for dropping page cache.
* Put some structures to uapi head file.
* Use a new way to determine the page bitmap size.
* Use a unified way to send the free page information with the bitmap
* Address the issues referred in MST's comments
Liang Li (7):
vi
will not be
filtered out in this case.
The current implementation can not work with post copy, if post
copy is enabled, we simply ignore the free pages. Will make it
work later.
Signed-off-by: Liang Li <liang.z...@intel.com>
---
migration/ram.
Sometimes, it is need to move a portion of bitmap to another place
in a large bitmap, if overlap happens, the bitmap_copy can't not
work correctly, we need a new function to do this work.
Signed-off-by: Liang Li <liang.z...@intel.com>
---
include/qemu/bitmap.h | 13 +
1 file c
Add a new function to get the vm's max pfn and a new function
to filter out the holes to get a tight free page bitmap.
They are implemented on X86, and all the arches should implement
them for live migration optimization.
Signed-off-by: Liang Li <liang.z...@intel.com>
---
include/sysemu
-off-by: Liang Li <liang.z...@intel.com>
---
balloon.c | 24 +++-
hw/virtio/virtio-balloon.c | 75 +-
include/hw/virtio/virtio-balloon.h | 4 ++
include/sysemu/balloon.h | 8
4 files changed, 108 inse
Add the hmp and qmp interface to drop vm's page cache, users
can control the type of cache they want vm to drop.
Signed-off-by: Liang Li <liang.z...@intel.com>
---
balloon.c| 19 +++
hmp-commands.hx | 15 +++
hmp.c
the exact amount of memroy that can be reclaimed.
This patch add a new feature to the balloon device to support this
operation, hypervisor can request the VM to drop it's cache, so as to
reclaim more memory.
Signed-off-by: Liang Li <liang.z...@intel.com>
---
bal
This patch set is intended to speed up the inflating/deflating
process of virtio-balloon and speed up live migration by skipping
process guest's free pages.
The virtio-balloon is extended to support some new features, so
as to make things faster.
Liang Li (7):
balloon: speed up inflating
ture to the
virtio-balloon device. And now, inflating the balloon to 3GB of a 4GB
idle guest only takes 210ms, it's about 8 times as fast as before.
TODO: optimize stage a by allocating/freeing a chunk of pages instead
of a single page at a time.
Signed-off-by: Liang Li <liang.z...@intel.com>
---
hw/vir
ture to the
virtio-balloon device. And now, inflating the balloon to 3GB of a 4GB
idle guest only takes 210ms, it's about 8 times as fast as before.
TODO: optimize stage a by allocating/freeing a chunk of pages instead
of a single page at a time.
v2 changes:
change the interface
Signed-off-by: Lian
one.
2. Address some of comments of v1.
Signed-off-by: Liang Li <liang.z...@intel.com>
Suggested-by: Michael S. Tsirkin <m...@redhat.com>
Cc: Michael S. Tsirkin <m...@redhat.com>
Cc: Paolo Bonzini <pbonz...@redhat.com>
Cc: Cornelia Huck <cornelia.h...@de.ibm.com>
C
ture to the
virtio-balloon device. And now, inflating the balloon to 3GB of a 4GB
idle guest only takes 175ms, it's about 9 times as fast as before.
TODO: optimize stage a by allocating/freeing a chunk of pages instead
of a single page at a time.
Signed-off-by: Liang Li <liang.z...@intel.com>
---
driv
ture to the
virtio-balloon device. And now, inflating the balloon to 3GB of a 4GB
idle guest only takes 175ms, it's about 9 times as fast as before.
TODO: optimize stage a by allocating/freeing a chunk of pages instead
of a single page at a time.
Signed-off-by: Liang Li <liang.z...@intel.com>
---
hw/vir
Use 'QemuMutex comp_done_lock' and 'QemuCond comp_done_cond' instead
of 'QemuMutex *comp_done_lock' and 'QemuCond comp_done_cond'. To keep
consistent with 'QemuMutex decomp_done_lock' and
'QemuCond comp_done_cond'.
Signed-off-by: Liang Li <liang.z...@intel.com>
---
migration/ram.
Use qemu_put_compression_data to do the compression directly
instead of using do_compress_ram_page, avoid some data copy.
very small improvement, at the same time, add code to check
if the compression is successful.
Signed-off-by: Liang Li <liang.z...@intel.com>
---
migration/ram.
Current qemu_put_compression_data can only work with no writable
QEMUFile, and can't work with the writable QEMUFile. But it does
not provide any measure to prevent users from using it with a
writable QEMUFile.
We should fix this flaw to make it works with writable QEMUFile.
Signed-off-by: Liang
quit_comp_thread and quit_decomp_thread are accessed by several
thread, it's better to protect them with locks. We use a per
thread flag to replace the global one, and the new flag is protected
by a lock.
Signed-off-by: Liang Li <liang.z...@intel.com>
---
migration/ram.
page_buffer is set twice repeatedly, remove the previous set.
Signed-off-by: Liang Li <liang.z...@intel.com>
Reviewed-by: Dr. David Alan Gilbert <dgilb...@redhat.com>
Reviewed-by: Juan Quintela <quint...@redhat.com>
---
migration/ram.c | 1 -
1 file changed, 1 deletion(-)
diff
The current code for multi-thread compression is not clear,
especially in the aspect of using lock. Refine the code
to make it clear.
Signed-off-by: Liang Li <liang.z...@intel.com>
---
migration/ram.c | 84 +++--
1 file changed, 40 inse
The current code for multi-thread decompression is not clear,
especially in the aspect of using lock. Refine the code
to make it clear.
Signed-off-by: Liang Li <liang.z...@intel.com>
---
migration/ram.c | 50 +-
1 file changed, 25 insertions(
to fix this potential issue.
Suggested-by: David Alan Gilbert <dgilb...@redhat.com>
Suggested-by: Juan Quintela <quint...@redhat.com>
Signed-off-by: Liang Li <liang.z...@intel.com>
---
migration/ram.c | 19 +++
1 file changed, 19 insertions(+)
diff --git a/migration
ted in the decompression
thread.
Fix these two issues by following the code pattern for compression.
Signed-off-by: Liang Li <liang.z...@intel.com>
Reported-by: Daniel P. Berrange <berra...@redhat.com>
Reviewed-by: Daniel P. Berrange <berra...@redhat.com>
Reviewed-by: Dr. David Alan Gilbert
. Thanks for Juan's work.
Liang Li (9):
migration: Fix multi-thread compression bug
migration: Fix a potential issue
migration: remove useless code
qemu-file: Fix qemu_put_compression_data flaw
migration: refine ram_save_compressed_page
migration: protect the quit flag by lock
migration
to fix this potential issue.
Suggested-by: David Alan Gilbert <dgilb...@redhat.com>
Signed-off-by: Liang Li <liang.z...@intel.com>
---
include/migration/migration.h | 1 +
migration/migration.c | 2 +-
migration/ram.c | 20
3 files changed, 2
Use qemu_put_compression_data to do the compression directly
instead of using do_compress_ram_page, avoid some data copy.
very small improvement, at the same time, add code to check
if the compression is successful.
Signed-off-by: Liang Li <liang.z...@intel.com>
---
migration/ram.
page_buffer is set twice repeatedly, remove the previous set.
Signed-off-by: Liang Li <liang.z...@intel.com>
Reviewed-by: Dr. David Alan Gilbert <dgilb...@redhat.com>
---
migration/ram.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/migration/ram.c b/migration/ram.c
index 4459
Quintela <quint...@redhat.com>
Signed-off-by: Liang Li <liang.z...@intel.com>
---
migration/qemu-file.c | 23 +--
migration/ram.c | 6 +-
2 files changed, 26 insertions(+), 3 deletions(-)
diff --git a/migration/qemu-file.c b/migration/qemu-file.c
i
ted in the decompression
thread.
Fix these two issues by following the code pattern for compression.
Signed-off-by: Liang Li <liang.z...@intel.com>
Reported-by: Daniel P. Berrange <berra...@redhat.com>
Reviewed-by: Daniel P. Berrange <berra...@redhat.com>
Reviewed-by: Dr. David Alan Gilbert
This patch set fixed a bug which will block live migration and another
potential issue when using multi-thread (de)compression.
The last three patches were submitted before, put them here together.
Liang Li (5):
migration: Fix multi-thread compression bug
migration: Fix a potential issue
ted in the decompression
thread.
Fix these two issues by following the code pattern for compression.
Reported-by: Daniel P. Berrange <berra...@redhat.com>
Signed-off-by: Liang Li <liang.z...@intel.com>
---
migration/ram.c | 38 +++---
1 file changed, 27 insertions(+
The free page bitmap will be sent to QEMU through virtio interface
and used for live migration optimization.
Drop the cache before building the free page bitmap can get more
free pages. Whether dropping the cache is decided by user.
Signed-off-by: Liang Li <liang.z...@intel.com>
-
Extend the virtio balloon to support the new feature
VIRTIO_BALLOON_F_GET_FREE_PAGES, so that we can use it to send
the free page bitmap from guest to QEMU, the free page bitmap will
be used for live migration optimization.
Signed-off-by: Liang Li <liang.z...@intel.com>
---
drivers/
ion.
Liang Li (2):
mm: add the related functions to build the free page bitmap
virtio-balloon: extend balloon driver to support the new feature
drivers/virtio/virtio_balloon.c | 100 ++--
fs/drop_caches.c| 22 +---
include/linux/f
Add a new function to get the vm's max pfn and a new function
to filter out the holes to get a tight free page bitmap.
They are implemented on X86, and all the arches should implement
them for live migration optimization.
Signed-off-by: Liang Li <liang.z...@intel.com>
---
include/sysemu
will not be
filtered out in this case.
The current implementation can not work with post copy, if post
copy is enabled, we simply ignore the free pages. Will make it
work later.
Signed-off-by: Liang Li <liang.z...@intel.com>
---
migration/ram.c
Whether drop the cache and drop what kind of cache depend on the
user, add the related qmp and hmp interface to query and set the
cache control value.
Signed-off-by: Liang Li <liang.z...@intel.com>
---
hmp.c | 8
include/migration/migration.h | 1 +
mig
Extend the virtio balloon device to support a new feature, this
new feature can help to get guest's free pages information, which
can be used for live migration optimzation.
Signed-off-by: Liang Li <liang.z...@intel.com>
---
balloon.c | 29 ++
Sometimes, it is need to move a portion of bitmap to another place
in a large bitmap, if overlap happens, the bitmap_copy can't not
work correctly, we need a new function to do this work.
Signed-off-by: Liang Li <liang.z...@intel.com>
---
include/qemu/bitmap.h | 13 +
1 file c
914
--
transferred ram(KB) | 1316747 | 421980
==
Liang Li (5):
bitmap: Add a new bitmap_move function
kvm: Add two new arch specific functions
virtio-balloon: Add a new feature to balloon device
migration: filter
page_buffer is set twice repeatedly, remove the previous set.
Signed-off-by: Liang Li <liang.z...@intel.com>
---
migration/ram.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/migration/ram.c b/migration/ram.c
index 3f05738..31d40f4 100644
--- a/migration/ram.c
+++ b/migration
I have sent the RFC version patch set for live migration optimization
by skipping processing the free pages in the ram bulk stage and
received a lot of comments. The related threads can be found at:
https://lists.gnu.org/archive/html/qemu-devel/2016-03/msg00715.html
, execute the AVX2 instructions,
else, execute the original instructions.
Signed-off-by: Liang Li <liang.z...@intel.com>
Suggested-by: Paolo Bonzini <pbonz...@redhat.com>
Suggested-by: Richard Henderson <r...@twiddle.net>
Reviewed-by: Paolo Bonzini <pbonz...@redhat.com>
---
inc
uggestion)
* Change the configure, detect ifunc and avx2 attributes together
v2 -> v3 changes:
* Detect the ifunc attribute support (Paolo's suggestion)
* Use the ifunc attribute instead of the inline asm (Richard's suggestion)
* Change the configure (Juan's suggestion)
Liang Li (2):
confi
Detect if the compiler can support the ifun and avx2, if so, set
CONFIG_AVX2_OPT which will be used to turn on the avx2 instruction
optimization.
Suggested-by: Paolo Bonzini <pbonz...@redhat.com>
Suggested-by: Peter Maydell <peter.mayd...@linaro.org>
Signed-off-by: Liang Li <liang
Extend the virio balloon to support the new feature
VIRTIO_BALLOON_F_GET_FREE_PAGES, so that we can use it to send the
free pages information from guest to QEMU, and then optimize the
live migration process.
Signed-off-by: Liang Li <liang.z...@intel.com>
---
drivers/virtio/virtio_bal
get_total_pages_count() tries to get the page count of the system
RAM.
get_free_pages() is intend to construct a free pages bitmap by
traversing the free_list.
The free pages information will be sent to QEMU through virtio
and used for live migration optimization.
Signed-off-by: Liang Li
Get the free pages information through virtio and filter out the free
pages in the ram bulk stage. This can significantly reduce the total
live migration time as well as network traffic.
Signed-off-by: Liang Li <liang.z...@intel.com>
---
migration/ram.
361375
Liang Li (2):
mm: Add the functions used to get free pages information
virtio-balloon: extend balloon driver to support a new feature
drivers/virtio/virtio_balloon.c | 108 ++--
include/uapi/linux/virtio_balloon.h | 1
Extend the virtio balloon device to support a new feature, this
new feature can help to get guest's free pages information, which
can be used for live migration optimzation.
Signed-off-by: Liang Li <liang.z...@intel.com>
---
balloon.c | 30 +++
The lowmem will be used by the following patch to get
a correct free pages bitmap.
Signed-off-by: Liang Li <liang.z...@intel.com>
---
hw/i386/pc.c | 5 +
hw/i386/pc_piix.c| 1 +
hw/i386/pc_q35.c | 1 +
include/hw/i386/pc.h | 3 ++-
4 files changed, 9 insertions(+), 1 de
ion.
| original |pv
---
total time(ms) | 7436| 552
transferred ram(KB) | 8146291 | 361375
====
Liang Li (4):
pc: Add code to get the low
Set ram_list.dirty_memory instead of migration bitmap, the migration
bitmap will be update when doing migration_bitmap_sync().
Set migration_dirty_pages to 0 and it will be updated by
migration_dirty_pages() too.
The following patch is based on this change.
Signed-off-by: Liang Li <lian
Quintela <quint...@redhat.com>
Signed-off-by: Liang Li <liang.z...@intel.com>
---
migration/qemu-file.c | 23 +--
migration/ram.c |6 +-
2 files changed, 26 insertions(+), 3 deletions(-)
diff --git a/migration/qemu-file.c b/migration/qemu-file.c
i
Use qemu_put_compression_data to do the compression directly
instead of using do_compress_ram_page, avoid some data copy.
very small improvement, at the same time, add code to check
if the compression is successful.
Signed-off-by: Liang Li <liang.z...@intel.com>
---
migration/ram.c
.
ram_save_compressed_page can be refined based on the change of
qemu_put_compression_data, very small improvement, but code looks better.
Liang Li (2):
qemu-file: Fix qemu_put_compression_data flaw
migration: refine ram_save_compressed_page
migration/qemu-file.c | 23 +--
migration/ram.c
Detect if the compiler can support the ifun and avx2, if so, set
CONFIG_AVX2_OPT which will be used to turn on the avx2 instruction
optimization.
Suggested-by: Paolo Bonzini <pbonz...@redhat.com>
Suggested-by: Peter Maydell <peter.mayd...@linaro.org>
Signed-off-by: Liang Li <liang
, execute the AVX2 instructions,
else, execute the original instructions.
Signed-off-by: Liang Li <liang.z...@intel.com>
Suggested-by: Paolo Bonzini <pbonz...@redhat.com>
Suggested-by: Richard Henderson <r...@twiddle.net>
Reviewed-by: Paolo Bonzini <pbonz...@redhat.com>
---
inc
(Paolo's suggestion)
* Use the ifunc attribute instead of the inline asm (Richard's suggestion)
* Change the configure (Juan's suggestion)
Liang Li (2):
configure: detect ifunc and avx2 attribute
cutils: add avx2 instruction optimization
configure | 21 +
inc
Since 's->state' will be set in migrate_init(), there is no
need to set it before calling migrate_init(). The code and
the related comments can be removed.
Signed-off-by: Liang Li <liang.z...@intel.com>
---
migration/migration.c | 6 --
1 file changed, 6 deletions(-)
diff --git a/
Change the configure (Juan's suggestion)
Liang Li (2):
configure: detect ifunc and avx2 attribute
cutils: add avx2 instruction optimization
configure | 20 +
include/qemu-common.h | 8 +---
util/cutils.c | 118 --
3
, execute the original instructions.
Signed-off-by: Liang Li <liang.z...@intel.com>
---
include/qemu-common.h | 8 +---
util/cutils.c | 118 --
2 files changed, 115 insertions(+), 11 deletions(-)
diff --git a/include/qemu-common.h b/i
Detect if the compiler can support the ifun and avx2, if so, set
CONFIG_AVX2_OPT which will be used to turn on the avx2 instruction
optimization.
Signed-off-by: Liang Li <liang.z...@intel.com>
---
configure | 20
1 file changed, 20 insertions(+)
diff --git a/confi
Change the configure (Juan's suggestion)
Liang Li (2):
configure: detect ifunc and avx2 attribute
cutils: add avx2 instruction optimization
configure | 20 +
include/qemu-common.h | 8 +---
util/cutils.c | 118 --
3
Use qemu_put_compression_data to do the compression directly
instead of using do_compress_ram_page, avoid some data copy.
very small improvement, but the code looks better.
Signed-off-by: Liang Li <liang.z...@intel.com>
---
migration/ram.c | 20
1 file changed, 8 inse
. For safety, it should be improved to avoid some issues.
ram_save_compressed_page can be refined based on the change of
qemu_put_compression_data, very small improvement, but code looks better.
Liang Li (2):
qemu-file: Fix qemu_put_compression_data flaw
migration: refine ram_save_compressed_page
Current qemu_put_compression_data can only work with no writable
QEMUFile, and can't work with the writable QEMUFile. But it does
not provide any measure to prevent users from using it with a
writable QEMUFile.
We should fix this flaw to make it works with writable QEMUFile.
Signed-off-by: Liang
.
ram_save_compressed_page can be refined based on the change of
qemu_put_compression_data, very small improvement, but code looks better.
Liang Li (2):
qemu-file: Fix qemu_put_compression_data flaw
migration: refine ram_save_compressed_page
migration/qemu-file.c | 23 +--
migration/ram.c
allocating all the guest's RAM pages in the destination node after
live migration. Another benefit is destination QEMU can save lots of
CPU cycles for zero page checking.
Signed-off-by: Liang Li <liang.z...@intel.com>
---
migration/ram.c | 10 ++
1 file changed, 6 insertions
the original code.
Signed-off-by: Liang Li <liang.z...@intel.com>
---
include/qemu-common.h | 13 +-
util/Makefile.objs | 2 ++
util/buffer-zero-avx2.c | 54
util/cutils.c | 65 ++
Add the '--enable-avx2' & '--disable-avx2' option so as to config
the AVX2 instruction optimization.
If '--disable-avx2' is not set, configure will detect if the compiler
can support AVX2 option, if yes, AVX2 optimization is eabled, else
disabled.
Signed-off-by: Liang Li <liang.z...@in
Detect if the compiler can support the ifunc attribute, the avx2
optimization depends on ifunc attribute.
Signed-off-by: Liang Li <liang.z...@intel.com>
---
configure | 20
1 file changed, 20 insertions(+)
diff --git a/configure b/configure
index b9552fd..394db3b
unc attribute instead of the inline asm (Richard's suggestion)
* Change the configure (Juan's suggestion)
Liang Li (3):
cutils: add avx2 instruction optimization
configure: detect ifunc attribute
configure: add options to config avx2
configure |
Current qemu_put_compression_data can only work with no writable
QEMUFile, and can't work with the writable QEMUFile. But it does
not provide any measure to prevent users from using it with a
writable QEMUFile.
We should fix this flaw to make it works with writable QEMUFile.
Signed-off-by: Liang
.
ram_save_compressed_page can be refined based on the change of
qemu_put_compression_data, very small improvement, but code looks better.
Liang Li (2):
qemu-file: Fix qemu_put_compression_data flaw
migration: refine ram_save_compressed_page
migration/qemu-file.c | 23 +--
migration/ram.c
Use qemu_put_compression_data to do the compression directly
instead of using do_compress_ram_page, avoid some data copy.
very small improvement, but the code looks better.
Signed-off-by: Liang Li <liang.z...@intel.com>
---
migration/ram.c | 20
1 file changed, 8 inse
There are some flaws in qemu_put_compression_data, this patch tries
to fix it. Now it can be used by other code.
Signed-off-by: Liang Li <liang.z...@intel.com>
---
migration/qemu-file.c | 10 +-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/migration/qemu-fi
This patch fixed the flaws in qemu_put_compression_data function.
and cleanup the code based on the change.
Liang Li (2):
qemu-file: fix flaws of qemu_put_compression_data
migration: code clean up.
migration/qemu-file.c | 10 +-
migration/ram.c | 20
2
Use qemu_put_compression_data to do the compression directly
instead of using do_compress_ram_page, avoid some data copy.
very small improvement, but the code looks better.
Signed-off-by: Liang Li <liang.z...@intel.com>
---
migration/ram.c | 20
1 file changed, 8 inse
There are some flaws in qemu_put_compression_data, this patch tries
to fix it. Now it can be used by other code.
Signed-off-by: Liang Li <liang.z...@intel.com>
---
migration/qemu-file.c | 10 +-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/migration/qemu-fi
Use qemu_put_compression_data to do the compression directly
instead of using do_compress_ram_page, avoid some data copy.
very small improvement, but the code looks better.
Signed-off-by: Liang Li <liang.z...@intel.com>
---
migration/ram.c | 20
1 file changed, 8 inse
This patch fixed the flaws in qemu_put_compression_data function.
and cleanup the code based on the change.
Liang Li (2):
qemu-file: fix flaws of qemu_put_compression_data
migration: code clean up.
migration/qemu-file.c | 10 +-
migration/ram.c | 20
2
the original code.
Signed-off-by: Liang Li <liang.z...@intel.com>
---
include/qemu-common.h | 28 +++--
util/Makefile.objs| 2 ++
util/avx2.c | 68 +++
util/cutils.c | 47
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