Hi David,
On Tue, Feb 21, 2017 at 10:03:14AM +, Dr. David Alan Gilbert wrote:
> * Alexey Perevalov (a.pereva...@samsung.com) wrote:
> >
> > Hello David,
>
> Hi Alexey,
>
> > On Tue, Feb 14, 2017 at 07:34:26PM +, Dr. David Alan Gilbert wrote:
>
On 02/27/2017 02:26 PM, Dr. David Alan Gilbert wrote:
* Alexey Perevalov (a.pereva...@samsung.com) wrote:
Hi David,
On Tue, Feb 21, 2017 at 10:03:14AM +, Dr. David Alan Gilbert wrote:
* Alexey Perevalov (a.pereva...@samsung.com) wrote:
Hello David,
Hi Alexey,
On Tue, Feb 14, 2017 at
On 06/14/2017 08:12 AM, Peter Xu wrote:
On Tue, Jun 13, 2017 at 12:36:33PM +0300, Alexey Perevalov wrote:
This patch adds ability to track down already copied
pages, it's necessary for calculation vCPU block time in
postcopy migration feature, maybe for restore after
postcopy migration fa
On 06/14/2017 09:53 AM, Peter Xu wrote:
On Wed, Jun 14, 2017 at 09:39:53AM +0300, Alexey Perevalov wrote:
On 06/14/2017 08:12 AM, Peter Xu wrote:
On Tue, Jun 13, 2017 at 12:36:33PM +0300, Alexey Perevalov wrote:
This patch adds ability to track down already copied
pages, it's necessar
On 06/13/2017 02:42 PM, Juan Quintela wrote:
Alexey Perevalov wrote:
Hi
I think that it would make things clearer if we do a s/copied/received/
As what we are tracking here are the pages that have already been
received.
This patch adds ability to track down already copied
pages, it&#
Need to mark copied pages as closer as possible to the place where it
tracks down. That will be necessary in futher patch.
Reviewed-by: Juan Quintela
Signed-off-by: Alexey Perevalov
---
migration/postcopy-ram.c | 13 -
migration/postcopy-ram.h | 4 ++--
migration/ram.c
Just for placing auxilary operations inside helper,
auxilary operations like: track received pages,
notify about copying operation in futher patches.
Signed-off-by: Alexey Perevalov
---
migration/postcopy-ram.c | 35 ++-
1 file changed, 22 insertions(+), 13
r"
Patchset is based on Juan's patchset:
[PATCH v2 0/5] Create setup/cleanup methods for migration incoming side
Alexey Perevalov (3):
migration: postcopy_place_page factoring out
migration: introduce qemu_ufd_copy_ioctl helper
migration: add bitmap for received page
include
ct page is exists after remmap).
Bitmap is placed into RAMBlock as another postcopy/precopy
related bitmaps.
Signed-off-by: Alexey Perevalov
---
include/exec/ram_addr.h | 2 ++
migration/postcopy-ram.c | 11 ---
migration/ram.c | 33 +
migra
On 06/16/2017 12:06 PM, Peter Xu wrote:
On Thu, Jun 15, 2017 at 07:36:15PM +0300, Alexey Perevalov wrote:
[...]
+void init_receivedmap(void)
+{
+RAMBlock *rb;
+
+RAMBLOCK_FOREACH(rb) {
+unsigned long pages;
+pages = rb->max_length >> TARGET_PAGE_BITS;
Nit
On 06/16/2017 08:14 PM, Dr. David Alan Gilbert wrote:
* Alexey Perevalov (a.pereva...@samsung.com) wrote:
This patch adds ability to track down already received
pages, it's necessary for calculation vCPU block time in
postcopy migration feature, maybe for restore after
postcopy migr
Just for placing auxilary operations inside helper,
auxilary operations like: track received pages,
notify about copying operation in futher patches.
Reviewed-by: Dr. David Alan Gilbert
Reviewed-by: Peter Xu
Signed-off-by: Alexey Perevalov
---
migration/postcopy-ram.c | 34
am_load_cleanup
- new patch "migration: introduce qemu_ufd_copy_ioctl helper"
Patchset is based on Juan's patchset:
[PATCH v2 0/5] Create setup/cleanup methods for migration incoming side
Alexey Perevalov (3):
migration: postcopy_place_page factoring out
migration: introd
Need to mark copied pages as closer as possible to the place where it
tracks down. That will be necessary in futher patch.
Reviewed-by: Dr. David Alan Gilbert
Reviewed-by: Peter Xu
Reviewed-by: Juan Quintela
Signed-off-by: Alexey Perevalov
---
migration/postcopy-ram.c | 13
ct page is exists after remmap).
Bitmap is placed into RAMBlock as another postcopy/precopy
related bitmaps.
Signed-off-by: Alexey Perevalov
---
include/exec/ram_addr.h | 3 +++
migration/migration.c| 1 +
migration/postcopy-ram.c | 12 ++---
migration/ram.c
g only when kernel supports it
- It doesn't send back the downtime, just trace it
This patch set is based on commit
[PATCH v3 0/3] Add bitmap for received pages in postcopy migration
Alexey Perevalov (8):
userfault: add pid into uffd_msg & update UFFD_FEATURE_*
migration: pass M
uot;, \"state\":
true } ] } }" | nc -U /var/lib/migrate-vm-monitor.sock
Or just with HMP
(qemu) migrate_set_capability postcopy-blocktime on
Signed-off-by: Alexey Perevalov
---
migration/migration.h| 8 ++
migration/postcopy-ram.c | 65 +++
Reviewed-by: Dr. David Alan Gilbert
Signed-off-by: Alexey Perevalov
---
docs/devel/migration.txt | 10 ++
1 file changed, 10 insertions(+)
diff --git a/docs/devel/migration.txt b/docs/devel/migration.txt
index 1b940a8..4b625ca 100644
--- a/docs/devel/migration.txt
+++ b/docs/devel
Reviewed-by: Juan Quintela
Reviewed-by: Dr. David Alan Gilbert
Signed-off-by: Alexey Perevalov
---
migration/postcopy-ram.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/migration/postcopy-ram.c b/migration/postcopy-ram.c
index 35f3ffd..b35baf3 100644
--- a/migration
This commit duplicates header of "userfaultfd: provide pid in userfault msg"
into linux kernel.
Signed-off-by: Alexey Perevalov
---
linux-headers/linux/userfaultfd.h | 4
1 file changed, 4 insertions(+)
diff --git a/linux-headers/linux/userfaultfd.h
b/linux-headers/linux/use
Right now it could be used on destination side to
enable vCPU blocktime calculation for postcopy live migration.
vCPU blocktime - it's time since vCPU thread was put into
interruptible sleep, till memory page was copied and thread awake.
Reviewed-by: Dr. David Alan Gilbert
Signed-off-by: A
That tiny refactoring is necessary to be able to set
UFFD_FEATURE_THREAD_ID while requesting features, and then
to create downtime context in case when kernel supports it.
Signed-off-by: Alexey Perevalov
---
migration/migration.c| 3 ++-
migration/postcopy-ram.c | 10 +-
migration
ontext has internal state, and after first call of
ioctl UFFD_API it changes its state to UFFD_STATE_RUNNING (in case of
success), but kernel while handling ioctl UFFD_API expects UFFD_STATE_WAIT_API.
So only one ioctl with UFFD_API is possible per ufd.
Reviewed-by: Dr. David Alan Gilbert
Signed-off-
page address as value and vCPU
as index. It helps to find proper vCPU at UFFD_COPY time. Also it keeps
list for blocktime per vCPU (could be traced with page_fault_addr)
Blocktime will not calculated if postcopy_blocktime field of
MigrationIncomingState wasn't initialized.
Signed-off-by: A
On 06/16/2017 09:46 PM, Dr. David Alan Gilbert wrote:
* Alexey Perevalov (a.pereva...@samsung.com) wrote:
On 06/16/2017 08:14 PM, Dr. David Alan Gilbert wrote:
* Alexey Perevalov (a.pereva...@samsung.com) wrote:
This patch adds ability to track down already received
pages, it's necessar
will be necessary
- releasing memory of receivedmap was added into ram_load_cleanup
- new patch "migration: introduce qemu_ufd_copy_ioctl helper"
Patchset is based on Juan's patchset:
[PATCH v2 0/5] Create setup/cleanup methods for migration incoming side
Alexey Perevalov (3):
Need to mark copied pages as closer as possible to the place where it
tracks down. That will be necessary in futher patch.
Reviewed-by: Dr. David Alan Gilbert
Reviewed-by: Peter Xu
Reviewed-by: Juan Quintela
Signed-off-by: Alexey Perevalov
---
migration/postcopy-ram.c | 13
Just for placing auxilary operations inside helper,
auxilary operations like: track received pages,
notify about copying operation in futher patches.
Reviewed-by: Juan Quintela
Reviewed-by: Dr. David Alan Gilbert
Reviewed-by: Peter Xu
Signed-off-by: Alexey Perevalov
---
migration/postcopy
ct page is exists after remmap).
Bitmap is placed into RAMBlock as another postcopy/precopy
related bitmaps.
Signed-off-by: Alexey Perevalov
---
include/exec/ram_addr.h | 10
migration/migration.c| 1 +
migration/postcopy-ram.c | 20
migration/ram.c
il patch set where
it will be necessary
- releasing memory of receivedmap was added into ram_load_cleanup
- new patch "migration: introduce qemu_ufd_copy_ioctl helper"
Patchset is based on Juan's patchset:
[PATCH v2 0/5] Create setup/cleanup methods for migration incoming sid
Just for placing auxilary operations inside helper,
auxilary operations like: track received pages,
notify about copying operation in futher patches.
Reviewed-by: Juan Quintela
Reviewed-by: Dr. David Alan Gilbert
Reviewed-by: Peter Xu
Signed-off-by: Alexey Perevalov
---
migration/postcopy
Need to mark copied pages as closer as possible to the place where it
tracks down. That will be necessary in futher patch.
Reviewed-by: Dr. David Alan Gilbert
Reviewed-by: Peter Xu
Reviewed-by: Juan Quintela
Signed-off-by: Alexey Perevalov
---
migration/postcopy-ram.c | 13
ct page is exists after remmap).
Bitmap is placed into RAMBlock as another postcopy/precopy
related bitmaps.
Signed-off-by: Alexey Perevalov
---
include/exec/ram_addr.h | 10 ++
migration/migration.c| 1 +
migration/postcopy-ram.c | 16 +++-
migration/ram.c
Hello,
On 03/18/2017 02:27 AM, Mike Kravetz wrote:
On 03/15/2017 06:47 AM, Alexey Perevalov wrote:
Hi Andrea,
thank you for so perfect design description,
the main question who will do RFC patches,
you or Mike or if you not against I could try.
Sorry for not replying sooner, I have been
commit 372b3fe0b2ecdd39ba850e31c0c6686315c507af.
It contains kernel side pages, just for convinience of applying current patch
set,
for testing util kernel headers arn't synced.
Alexey Perevalov (6):
userfault: add pid into uffd_msg & update UFFD_FEATURE_*
util: introduce glib
Userfaultfd mechanism is able to provide process thread id,
in case when client request it with UFDD_API ioctl.
Signed-off-by: Alexey Perevalov
---
include/migration/postcopy-ram.h | 2 +-
migration/migration.c| 2 +-
migration/postcopy-ram.c | 12 ++--
migration
This commit duplicates header of "userfaultfd: provide pid in userfault msg"
into linux kernel.
Signed-off-by: Alexey Perevalov
---
linux-headers/linux/userfaultfd.h | 5 +
1 file changed, 5 insertions(+)
diff --git a/linux-headers/linux/userfaultfd.h
b/linux-headers/linux/use
consolidation purpose.
Signed-off-by: Alexey Perevalov
---
hw/block/xen_disk.c| 10 +-
include/glib-compat.h | 352 -
include/glib/glib-compat.h | 352 +
include/glib/glib-helper.h | 30
include
comment to
get_postcopy_total_downtime function.
Signed-off-by: Alexey Perevalov
---
include/migration/migration.h | 14 +++
migration/migration.c | 280 +-
migration/postcopy-ram.c | 24 +++-
migration/qemu-file.c | 1 -
migration
. For this purpose return path
socket was shosen.
Signed-off-by: Alexey Perevalov
---
include/migration/migration.h | 4 +++-
migration/migration.c | 20 ++--
migration/postcopy-ram.c | 1 +
3 files changed, 22 insertions(+), 3 deletions(-)
diff --git a/include
It could help to track down vCPU state during page fault and
page fault sources.
This patch showes proc's status/stack/syscall file at the moment of pagefault,
it's very interesting to know who was page fault initiator.
Signed-off-by: Alexey Perevalov
---
migration/postcopy-
On 05/31/2017 08:54 PM, Dr. David Alan Gilbert wrote:
* Alexey Perevalov (a.pereva...@samsung.com) wrote:
That tiny refactoring is necessary to be able to set
UFFD_FEATURE_THREAD_ID while requesting features, and then
to create downtime context in case when kernel supports it.
Signed-off-by
On 05/24/2017 06:31 AM, Peter Xu wrote:
On Tue, May 23, 2017 at 02:31:07PM +0300, Alexey Perevalov wrote:
This patch adds request to kernel space for UFFD_FEATURE_THREAD_ID,
in case when this feature is provided by kernel.
PostcopyBlocktimeContext is incapsulated inside postcopy-ram.c,
due to
sed on commit
a0d4aac7467dd02e5657b79e867f067330266a24
of git://git.qemu-project.org/qemu.git
Alexey Perevalov (11):
userfault: add pid into uffd_msg & update UFFD_FEATURE_*
migration: pass MigrationIncomingState* into migration check functions
migration: fix hardcoded function name in error report
migration: split ufd_v
uot;, \"state\":
true } ] } }" | nc -U /var/lib/migrate-vm-monitor.sock
Or just with HMP
(qemu) migrate_set_capability postcopy-blocktime on
Signed-off-by: Alexey Perevalov
---
include/migration/migration.h | 8 ++
migration/postcopy-ram.c | 65
This commit duplicates header of "userfaultfd: provide pid in userfault msg"
into linux kernel.
Signed-off-by: Alexey Perevalov
---
linux-headers/linux/userfaultfd.h | 4
1 file changed, 4 insertions(+)
diff --git a/linux-headers/linux/userfaultfd.h
b/linux-headers/linux/use
That tiny refactoring is necessary to be able to set
UFFD_FEATURE_THREAD_ID while requesting features, and then
to create downtime context in case when kernel supports it.
Signed-off-by: Alexey Perevalov
---
migration/migration.c| 3 ++-
migration/postcopy-ram.c | 10 +-
migration
Reviewed-by: Dr. David Alan Gilbert
Signed-off-by: Alexey Perevalov
---
migration/postcopy-ram.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/migration/postcopy-ram.c b/migration/postcopy-ram.c
index 10d39a0..9963ce4 100644
--- a/migration/postcopy-ram.c
+++ b/migration
is exists after remmap).
Bitmap is placed into RAMBlock as another postcopy/precopy
related bitmaps. Helpers are in migration/ram.c, due to
in this file is allowing to work with RAMBlock.
Signed-off-by: Alexey Perevalov
---
include/exec/ram_addr.h | 2 ++
migration/ram.c
Reviewed-by: Dr. David Alan Gilbert
Signed-off-by: Alexey Perevalov
---
docs/migration.txt | 10 ++
1 file changed, 10 insertions(+)
diff --git a/docs/migration.txt b/docs/migration.txt
index 1b940a8..4b625ca 100644
--- a/docs/migration.txt
+++ b/docs/migration.txt
@@ -402,6 +402,16
ontext has internal state, and after first call of
ioctl UFFD_API it changes its state to UFFD_STATE_RUNNING (in case of
success), but kernel while handling ioctl UFFD_API expects UFFD_STATE_WAIT_API.
So only one ioctl with UFFD_API is possible per ufd.
Signed-off-by: Alexey Perevalov
---
migratio
Need to set copied bitmap as closer as possible to mark_postcopy_blocktime_end.
So postcopy_place_page is proper place. RAMBlock argument here could avoid
additional RAMBlock lookup as well as reduce number of arguments
(no need to pass pointer to copied bitmap).
Signed-off-by: Alexey Perevalov
wback, it combines states of incoming and
outgoing migration. Ongoing migration state will overwrite incoming
state. Looks like better to separate query-migrate for incoming and
outgoing migration or add parameter to indicate type of migration.
Reviewed-by: Dr. David Alan Gi
page address as value and vCPU
as index. It helps to find proper vCPU at UFFD_COPY time. Also it keeps
list for blocktime per vCPU (could be traced with page_fault_addr)
Blocktime will not calculated if postcopy_blocktime field of
MigrationIncomingState wasn't initialized.
Signed-off-by: A
On 06/01/2017 01:57 PM, Dr. David Alan Gilbert wrote:
* Alexey Perevalov (a.pereva...@samsung.com) wrote:
This patch provides blocktime calculation per vCPU,
as a summary and as a overlapped value for all vCPUs.
This approach was suggested by Peter Xu, as an improvements of
previous approch
Right now it could be used on destination side to
enable vCPU blocktime calculation for postcopy live migration.
vCPU blocktime - it's time since vCPU thread was put into
interruptible sleep, till memory page was copied and thread awake.
Reviewed-by: Dr. David Alan Gilbert
Signed-off-by: A
eated as a standalone patch.
it's not bad to check every patch in sequence separately,
but including previous patches )
Fam
--
Best regards,
Alexey Perevalov
- It doesn't send back the downtime, just trace it
This patch set is based on commit
a0d4aac7467dd02e5657b79e867f067330266a24
of git://git.qemu-project.org/qemu.git
Alexey Perevalov (11):
userfault: add pid into uffd_msg & update UFFD_FEATURE_*
migration: pass MigrationIncomingState*
Need to mark paged copied as closer as possible place where it
tracks down. That will be necessary in futher patch.
Signed-off-by: Alexey Perevalov
---
migration/postcopy-ram.c | 13 -
migration/postcopy-ram.h | 4 ++--
migration/ram.c | 4 ++--
3 files changed, 12
Right now it could be used on destination side to
enable vCPU blocktime calculation for postcopy live migration.
vCPU blocktime - it's time since vCPU thread was put into
interruptible sleep, till memory page was copied and thread awake.
Reviewed-by: Dr. David Alan Gilbert
Signed-off-by: A
uot;, \"state\":
true } ] } }" | nc -U /var/lib/migrate-vm-monitor.sock
Or just with HMP
(qemu) migrate_set_capability postcopy-blocktime on
Signed-off-by: Alexey Perevalov
---
include/migration/migration.h | 8 ++
migration/postcopy-ram.c | 65
page address as value and vCPU
as index. It helps to find proper vCPU at UFFD_COPY time. Also it keeps
list for blocktime per vCPU (could be traced with page_fault_addr)
Blocktime will not calculated if postcopy_blocktime field of
MigrationIncomingState wasn't initialized.
Signed-off-by: A
This commit duplicates header of "userfaultfd: provide pid in userfault msg"
into linux kernel.
Signed-off-by: Alexey Perevalov
---
linux-headers/linux/userfaultfd.h | 4
1 file changed, 4 insertions(+)
diff --git a/linux-headers/linux/userfaultfd.h
b/linux-headers/linux/use
Reviewed-by: Dr. David Alan Gilbert
Signed-off-by: Alexey Perevalov
---
migration/postcopy-ram.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/migration/postcopy-ram.c b/migration/postcopy-ram.c
index 10d39a0..8838901 100644
--- a/migration/postcopy-ram.c
+++ b/migration
is exists after remmap).
Bitmap is placed into RAMBlock as another postcopy/precopy
related bitmaps. Helpers are in migration/ram.c, due to
in this file is allowing to work with RAMBlock.
Signed-off-by: Alexey Perevalov
---
include/exec/ram_addr.h | 2 ++
migration/ram.c
wback, it combines states of incoming and
outgoing migration. Ongoing migration state will overwrite incoming
state. Looks like better to separate query-migrate for incoming and
outgoing migration or add parameter to indicate type of migration.
Reviewed-by: Dr. David Alan Gi
ontext has internal state, and after first call of
ioctl UFFD_API it changes its state to UFFD_STATE_RUNNING (in case of
success), but kernel while handling ioctl UFFD_API expects UFFD_STATE_WAIT_API.
So only one ioctl with UFFD_API is possible per ufd.
Signed-off-by: Alexey Perevalov
---
migratio
Reviewed-by: Dr. David Alan Gilbert
Signed-off-by: Alexey Perevalov
---
docs/migration.txt | 10 ++
1 file changed, 10 insertions(+)
diff --git a/docs/migration.txt b/docs/migration.txt
index 1b940a8..4b625ca 100644
--- a/docs/migration.txt
+++ b/docs/migration.txt
@@ -402,6 +402,16
That tiny refactoring is necessary to be able to set
UFFD_FEATURE_THREAD_ID while requesting features, and then
to create downtime context in case when kernel supports it.
Signed-off-by: Alexey Perevalov
---
migration/migration.c| 3 ++-
migration/postcopy-ram.c | 10 +-
migration
On 06/07/2017 03:43 PM, Juan Quintela wrote:
Alexey Perevalov wrote:
This patch adds request to kernel space for UFFD_FEATURE_THREAD_ID,
in case when this feature is provided by kernel.
I think this function is wrong
migration_exit_cb will be called at QEMU exit, but see later
+static
On 06/07/2017 03:52 PM, Juan Quintela wrote:
Alexey Perevalov wrote:
Reviewed-by: Dr. David Alan Gilbert
Signed-off-by: Alexey Perevalov
---
docs/migration.txt | 10 ++
1 file changed, 10 insertions(+)
diff --git a/docs/migration.txt b/docs/migration.txt
index 1b940a8..4b625ca
On 06/07/2017 12:46 PM, Alexey Perevalov wrote:
This patch adds ability to track down already copied
pages, it's necessary for calculation vCPU block time in
postcopy migration feature, maybe for restore after
postcopy migration failure.
Also it's necessary to solve shared memor
On 06/07/2017 03:56 PM, Juan Quintela wrote:
Alexey Perevalov wrote:
+static unsigned long get_copiedmap_size(RAMBlock *rb)
+{
+unsigned long pages;
+pages = rb->max_length >> find_first_bit((unsigned long *)&rb->page_size,
+
On 06/09/2017 07:10 AM, Peter Xu wrote:
On Wed, Jun 07, 2017 at 12:46:29PM +0300, Alexey Perevalov wrote:
That tiny refactoring is necessary to be able to set
UFFD_FEATURE_THREAD_ID while requesting features, and then
to create downtime context in case when kernel supports it.
Signed-off-by
On 06/09/2017 09:06 AM, Peter Xu wrote:
On Wed, Jun 07, 2017 at 05:13:00PM +0300, Alexey Perevalov wrote:
On 06/07/2017 12:46 PM, Alexey Perevalov wrote:
This patch adds ability to track down already copied
pages, it's necessary for calculation vCPU block time in
postcopy migration fe
On 06/09/2017 10:14 AM, Peter Xu wrote:
On Fri, Jun 09, 2017 at 09:21:38AM +0300, Alexey Perevalov wrote:
On 06/09/2017 07:10 AM, Peter Xu wrote:
On Wed, Jun 07, 2017 at 12:46:29PM +0300, Alexey Perevalov wrote:
That tiny refactoring is necessary to be able to set
UFFD_FEATURE_THREAD_ID while
On 06/13/2017 08:59 AM, Peter Xu wrote:
On Wed, Jun 07, 2017 at 12:46:34PM +0300, Alexey Perevalov wrote:
This patch adds ability to track down already copied
pages, it's necessary for calculation vCPU block time in
postcopy migration feature, maybe for restore after
postcopy migration fa
functions are required in virtio.
Alexey Perevalov (2):
migration: postcopy_place_page factoring out
migration: add bitmap for copied page
include/exec/ram_addr.h | 3 +++
include/migration/migration.h | 3 +++
migration/postcopy-ram.c | 20 +++
migration/postcopy-ram.h
is exists after remmap).
Bitmap is placed into RAMBlock as another postcopy/precopy
related bitmaps.
copied bitmap is not releasing due to ramblocks is not releasing
too.
Signed-off-by: Alexey Perevalov
---
include/exec/ram_addr.h | 3 +++
include/migration/migration.h | 3 +++
migratio
Need to mark copied pages as closer as possible to the place where it
tracks down. That will be necessary in futher patch.
Reviewed-by: Juan Quintela
Signed-off-by: Alexey Perevalov
---
migration/postcopy-ram.c | 13 -
migration/postcopy-ram.h | 4 ++--
migration/ram.c
On 06/13/2017 02:42 PM, Juan Quintela wrote:
Alexey Perevalov wrote:
Hi
I think that it would make things clearer if we do a s/copied/received/
As what we are tracking here are the pages that have already been
received.
yes, sounds good
This patch adds ability to track down already
Signed-off-by: Alexey Perevalov
---
docs/migration.txt | 10 ++
1 file changed, 10 insertions(+)
diff --git a/docs/migration.txt b/docs/migration.txt
index 1b940a8..d0f5a6d 100644
--- a/docs/migration.txt
+++ b/docs/migration.txt
@@ -402,6 +402,16 @@ will now cause the transition from
Right now it could be used on destination side to
enable vCPU blocktime calculation for postcopy live migration.
vCPU blocktime - it's time since vCPU thread was put into
interruptible sleep, till memory page was copied and thread awake.
Signed-off-by: Alexey Perevalov
---
include/migr
control it
[root@host]#printf "{\"execute\" : \"qmp_capabilities\"}\r\n \
{\"execute\": \"migrate-set-capabilities\" , \"arguments\": {
\"capabilities\": [ { \"capability\": \"postcopy-blocktime\", \&q
"status": "completed",
"postcopy_blocktime": 100
}}
postcopy_vcpu_blocktime contains list, where the first item is the first
vCPU in QEMU.
Signed-off-by: Alexey Perevalov
---
include/migration/migration.h | 4 +++
migration/migration.c | 47 +++
s under linux ifdef.
Signed-off-by: Alexey Perevalov
---
migration/postcopy-ram.c | 87 +++-
migration/trace-events | 5 ++-
2 files changed, 90 insertions(+), 2 deletions(-)
diff --git a/migration/postcopy-ram.c b/migration/postcopy-ram.c
index fd5a
Signed-off-by: Alexey Perevalov
---
migration/postcopy-ram.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/migration/postcopy-ram.c b/migration/postcopy-ram.c
index fbccc53..b6eccaf 100644
--- a/migration/postcopy-ram.c
+++ b/migration/postcopy-ram.c
@@ -67,7 +67,7
That tiny refactoring is necessary to be able to set
UFFD_FEATURE_THREAD_ID while requesting features, and then
to create downtime context in case when kernel supports it.
Signed-off-by: Alexey Perevalov
---
migration/migration.c| 2 +-
migration/postcopy-ram.c | 10 +-
migration
This commit duplicates header of "userfaultfd: provide pid in userfault msg"
into linux kernel.
Signed-off-by: Alexey Perevalov
---
linux-headers/linux/userfaultfd.h | 5 +
1 file changed, 5 insertions(+)
diff --git a/linux-headers/linux/userfaultfd.h
b/linux-headers/linux/use
y-ram.h movement.
It contains patch for kernel header, just for convinience of applying current
patch set, for testing until kernel headers arn't synced. At the moment of
posting this patch set, "userfaultfd: provide pid in userfault msg" wasn't yet
merged into upstream.
ontext has internal state, and after first call of
ioctl UFFD_API it changes its state to UFFD_STATE_RUNNING (in case of
success), but
kernel while handling ioctl UFFD_API expects UFFD_STATE_WAIT_API. So
only one ioctl with UFFD_API is possible per ufd.
Signed-off-by: Alexey Perevalov
---
migratio
Right now it could be used on destination side to
enable vCPU blocktime calculation for postcopy live migration.
vCPU blocktime - it's time since vCPU thread was put into
interruptible sleep, till memory page was copied and thread awake.
Signed-off-by: Alexey Perevalov
---
include/migr
Signed-off-by: Alexey Perevalov
---
docs/migration.txt | 10 ++
1 file changed, 10 insertions(+)
diff --git a/docs/migration.txt b/docs/migration.txt
index 1b940a8..d0f5a6d 100644
--- a/docs/migration.txt
+++ b/docs/migration.txt
@@ -402,6 +402,16 @@ will now cause the transition from
page address as value and vCPU
as index. It helps to find proper vCPU at UFFD_COPY time. Also it keeps
list for blocktime per vCPU (could be traced with page_fault_addr)
Blocktime will not calculated if postcopy_blocktime field of
MigrationIncomingState wasn't initialized.
Signed-off-by: A
ced. At the moment of
posting this patch set, "userfaultfd: provide pid in userfault msg" wasn't yet
merged into upstream.
Alexey Perevalov (9):
userfault: add pid into uffd_msg & update UFFD_FEATURE_*
migration: pass ptr to MigrationIncomingState into migration
ufd_
Signed-off-by: Alexey Perevalov
---
migration/postcopy-ram.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/migration/postcopy-ram.c b/migration/postcopy-ram.c
index 4c859b4..0f75700 100644
--- a/migration/postcopy-ram.c
+++ b/migration/postcopy-ram.c
@@ -68,7 +68,7
"status": "completed",
"postcopy_blocktime": 100
}}
postcopy_vcpu_blocktime contains list, where the first item is the first
vCPU in QEMU.
Signed-off-by: Alexey Perevalov
---
include/migration/migration.h | 4 +++
migration/migration.c | 47 +
control it
[root@host]#printf "{\"execute\" : \"qmp_capabilities\"}\r\n \
{\"execute\": \"migrate-set-capabilities\" , \"arguments\": {
\"capabilities\": [ { \"capability\": \"postcopy-blocktime\", \&q
That tiny refactoring is necessary to be able to set
UFFD_FEATURE_THREAD_ID while requesting features, and then
to create downtime context in case when kernel supports it.
Signed-off-by: Alexey Perevalov
---
include/migration/postcopy-ram.h | 2 +-
migration/migration.c| 2
This commit duplicates header of "userfaultfd: provide pid in userfault msg"
into linux kernel.
Signed-off-by: Alexey Perevalov
---
linux-headers/linux/userfaultfd.h | 5 +
1 file changed, 5 insertions(+)
diff --git a/linux-headers/linux/userfaultfd.h
b/linux-headers/linux/use
1 - 100 of 251 matches
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