From: "Dr. David Alan Gilbert"
Signed-off-by: Dr. David Alan Gilbert
---
include/migration/migration.h | 3 +++
postcopy-ram.c| 23 +++
2 files changed, 26 insertions(+)
diff --git a/include/migration/migration.h b/include/migration/migration.h
index 397f41
From: "Dr. David Alan Gilbert"
On receiving MIG_RPCOMM_REQPAGES look up the address and
queue the page.
Signed-off-by: Dr. David Alan Gilbert
---
arch_init.c | 52 +++
include/migration/migration.h | 26 ++
include/q
From: "Dr. David Alan Gilbert"
In postcopy, the destination guest is running at the same time
as it's receiving pages; as we receive new pages we must put
them into the guests address space atomically to avoid a running
CPU accessing a partially written page.
Use the helpers in postcopy-ram.c to
From: "Dr. David Alan Gilbert"
Signed-off-by: Dr. David Alan Gilbert
---
include/migration/migration.h | 1 +
migration.c | 9 +
qapi-schema.json | 6 +-
3 files changed, 15 insertions(+), 1 deletion(-)
diff --git a/include/migration/migration.h b/inc
From: "Dr. David Alan Gilbert"
Add state variable showing current incoming postcopy state.
Signed-off-by: Dr. David Alan Gilbert
---
include/migration/migration.h | 8 ++
include/sysemu/sysemu.h | 23
savevm.c | 313 ++
From: "Dr. David Alan Gilbert"
Postcopy needs to have two migration streams loading concurrently;
one from memory (with the device state) and the other from the fd
with the memory transactions.
Split the core of qemu_loadvm_state out so we can use it for both.
Allow the inner loadvm loop to qui
From: "Dr. David Alan Gilbert"
Postcopy sends RAMBlock names and offsets over the wire (since it can't
rely on the order of ramaddr being the same), and it starts out with
HVA fault addresses from the kernel.
qemu_ram_block_from_host translates a HVA into a RAMBlock, an offset
in the RAMBlock, t
From: "Dr. David Alan Gilbert"
Provide a check to see if the OS we're running on has all the bits
needed for postcopy.
Creates postcopy-ram.c which will get most of the other helpers we need.
Signed-off-by: Dr. David Alan Gilbert
---
Makefile.objs| 2 +-
include/migratio
From: "Dr. David Alan Gilbert"
Add somewhere for the various migration parameters to be set with
one command;
As suggested in the thread:
http://lists.gnu.org/archive/html/qemu-devel/2012-11/msg00243.html
There are many existing migration parameters that are scattered over
many individual comma
From: "Dr. David Alan Gilbert"
Add MIG_RPCOMM_REQPAGES command on Return path for the postcopy
destination to request a page from the source.
Signed-off-by: Dr. David Alan Gilbert
---
include/migration/migration.h | 3 ++
migration.c | 75
From: "Dr. David Alan Gilbert"
Add migrate_send_rp_message to send a message from destination to source along
the return path.
(It uses a mutex to let it be called from multiple threads)
Add migrate_send_rp_ack to send an 'ack' message
Use it in the CMD_REQACK handler
Signed-off-by: Dr. Dav
From: "Dr. David Alan Gilbert"
Suspend to file is very much like a migrate, and it makes life
easier if we have the Migration state available, so initialise it
in the savevm.c code for suspending.
Signed-off-by: Dr. David Alan Gilbert
---
include/migration/migration.h | 1 +
include/qemu/typed
From: "Dr. David Alan Gilbert"
Wire up more of the handlers for the commands on the destination side,
in particular loadvm_postcopy_ram_handle_run now has enough to start the
guest running.
Signed-off-by: Dr. David Alan Gilbert
---
savevm.c | 47 ++-
From: "Dr. David Alan Gilbert"
check the return value of the function it calls and error if it's none-0
Fixup qemu_rdma_init_one_block that is the only current caller,
and __qemu_rdma_add_block the only function it calls using it.
Pass the name of the ramblock to the function; helps in debuggi
From: "Dr. David Alan Gilbert"
Use that to split the qemu_savevm_state_pending counts into postcopiable
and non-postcopiable amounts
Signed-off-by: Dr. David Alan Gilbert
---
arch_init.c | 7 +++
include/migration/vmstate.h | 2 +-
include/sysemu/sysemu.h | 4 +++-
m
From: "Dr. David Alan Gilbert"
Signed-off-by: Dr. David Alan Gilbert
---
include/migration/migration.h | 1 +
postcopy-ram.c| 93 +--
2 files changed, 90 insertions(+), 4 deletions(-)
diff --git a/include/migration/migration.h b/include/
From: "Dr. David Alan Gilbert"
postcopy_place_page (etc) provide a way for postcopy to place a page
into guests memory atomically (using the new remap_anon_pages syscall).
Signed-off-by: Dr. David Alan Gilbert
---
include/migration/migration.h| 1 +
include/migration/postcopy-ram.h | 23
From: "Dr. David Alan Gilbert"
Add lots of DPRINTF debug in qemu_loadvm*
Signed-off-by: Dr. David Alan Gilbert
---
savevm.c | 23 +--
1 file changed, 17 insertions(+), 6 deletions(-)
diff --git a/savevm.c b/savevm.c
index 16b672b..662a910 100644
--- a/savevm.c
+++ b/savevm
From: "Dr. David Alan Gilbert"
This is mostly as an easy way to get to the MigrationIncomingState
that I'm hanging off the file.
Signed-off-by: Dr. David Alan Gilbert buf_size = pending;
len = f->ops->get_buffer(f->opaque, f->buf + pending, f->pos,
-IO_BUF_SIZE - p
From: "Dr. David Alan Gilbert"
and use it in loadvm_state.
Signed-off-by: Dr. David Alan Gilbert
---
include/migration/qemu-file.h | 2 ++
qemu-file.c | 15 +++
savevm.c | 18 ++
3 files changed, 27 insertions(+), 8 deletions(
From: "Dr. David Alan Gilbert"
Misses out lines that are all 0 so can be quite compact
depending on the circumstance.
Signed-off-by: Dr. David Alan Gilbert
---
arch_init.c | 39 +++
include/migration/migration.h | 1 +
2 files changed, 40
From: "Dr. David Alan Gilbert"
Open a return path, and handle messages that are received upon it.
Signed-off-by: Dr. David Alan Gilbert
---
include/migration/migration.h | 10 +++
migration.c | 142 +-
2 files changed, 151 insertions(+
From: "Dr. David Alan Gilbert"
QEMU_VM_CMD_PACKAGED is a migration command that allows a chunk
of migration stream to be sent in one go, and be received by
a separate instance of the loadvm loop while not interacting
with the migration stream.
This is used by postcopy to load device state (from
From: "Dr. David Alan Gilbert"
There are currently lots of pieces of incoming migration state scattered
around, and postcopy is adding more, and it seems better to try and keep
it together.
allocate MIS in process_incoming_migration_co
Add MIS to QEMUFile
Signed-off-by: Dr. David Alan Gilbert
From: "Dr. David Alan Gilbert"
The loading of a device state (during postcopy) may access guest
memory that's still on the source machine and thus might need
a page fill; split off a separate thread that handles the incoming
page data so that the original incoming migration code can finish
off th
From: "Dr. David Alan Gilbert"
I forgot to add compatibility for Power when adding section footers.
Signed-off-by: Dr. David Alan Gilbert
Fixes: 37fb569c0198cba58e3e
---
hw/ppc/spapr.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index f174e5a..01f8da8
From: "Dr. David Alan Gilbert"
One of my patches used a loop that was based on host page size;
it dies in qtest since qtest hadn't bothered init'ing it.
Signed-off-by: Dr. David Alan Gilbert
---
qtest.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/qtest.c b/qtest.c
index 05cefd2..8e1034
From: "Dr. David Alan Gilbert"
Postcopy sends RAMBlock names and offsets over the wire (since it can't
rely on the order of ramaddr being the same), and it starts out with
HVA fault addresses from the kernel.
qemu_ram_block_from_host translates a HVA into a RAMBlock, an offset
in the RAMBlock an
From: "Dr. David Alan Gilbert"
This is the 7th cut of my version of postcopy; it is designed for use with
the Linux kernel additions posted by Andrea Arcangeli here:
git clone --reference linux -b userfault21
git://git.kernel.org/pub/scm/linux/kernel/git/andrea/aa.git
Note this API is slightl
From: "Dr. David Alan Gilbert"
The migration code generally is built target-independent, however
there are a few places where knowing the target page size would
avoid artificially moving stuff into migration/ram.c.
Provide 'qemu_target_page_bits()' that returns TARGET_PAGE_BITS
to other bits of
From: "Dr. David Alan Gilbert"
qemu_get_buffer always copies the data it reads to a users buffer,
however in many cases the file buffer inside qemu_file could be given
back to the caller, avoiding the copy. This isn't always possible
depending on the size and alignment of the data.
Thus 'qemu_g
From: "Dr. David Alan Gilbert"
Signed-off-by: Dr. David Alan Gilbert
---
docs/migration.txt | 167 +
1 file changed, 167 insertions(+)
diff --git a/docs/migration.txt b/docs/migration.txt
index f6df4be..b4b93d1 100644
--- a/docs/migration.txt
From: "Dr. David Alan Gilbert"
In postcopy we're going to need to perform the complete phase
for postcopiable devices at a different point, start out by
renaming all of the 'complete's to make the difference obvious.
Signed-off-by: Dr. David Alan Gilbert
Reviewed-by: Amit Shah
---
hw/ppc/spap
From: "Dr. David Alan Gilbert"
Postcopy needs a method to send messages from the destination back to
the source, this is the 'return path'.
Wire it up for 'socket' QEMUFile's.
Signed-off-by: Dr. David Alan Gilbert
---
include/migration/qemu-file.h | 7 +
migration/qemu-file-unix.c| 6
From: "Dr. David Alan Gilbert"
Useful for debugging the migration bitmap and other bitmaps
of the same format (including the sentmap in postcopy).
The bitmap is printed to stderr.
Lines that are all the expected value are excluded so the output
can be quite compact for many bitmaps.
Signed-off-
From: "Dr. David Alan Gilbert"
Add two src->dest commands:
* OPEN_RETURN_PATH - To request that the destination open the return path
* PING - Request an acknowledge from the destination
Signed-off-by: Dr. David Alan Gilbert
Reviewed-by: David Gibson
---
include/migration/migration.h |
From: "Dr. David Alan Gilbert"
Add a wrapper to change the blocking status on a QEMUFile
rather than having to use qemu_set_block(qemu_get_fd(f));
it seems best to avoid exposing the fd since not all QEMUFile's
really have one. With this wrapper we could move the implementation
down to be differ
From: "Dr. David Alan Gilbert"
Add migrate_send_rp_message to send a message from destination to source along
the return path.
(It uses a mutex to let it be called from multiple threads)
Add migrate_send_rp_shut to send a 'shut' message to indicate
the destination is finished with the RP.
Ad
From: "Dr. David Alan Gilbert"
Suspend to file is very much like a migrate, and it makes life
easier if we have the Migration state available, so initialise it
in the savevm.c code for suspending.
Signed-off-by: Dr. David Alan Gilbert
Reviewed-by: David Gibson
---
include/migration/migration.
From: "Dr. David Alan Gilbert"
Once postcopy is enabled (with migrate_set_capability), the migration
will still start on precopy mode. To cause a transition into postcopy
the:
migrate_start_postcopy
command must be issued. Postcopy will start sometime after this
(when it's next checked in t
From: "Dr. David Alan Gilbert"
Postcopy needs to have two migration streams loading concurrently;
one from memory (with the device state) and the other from the fd
with the memory transactions.
Split the core of qemu_loadvm_state out so we can use it for both.
Allow the inner loadvm loop to qui
From: "Dr. David Alan Gilbert"
The 'postcopy ram' capability allows postcopy migration of RAM;
note that the migration starts off in precopy mode until
postcopy mode is triggered (see the migrate_start_postcopy
patch later in the series).
Signed-off-by: Dr. David Alan Gilbert
---
include/migra
From: "Dr. David Alan Gilbert"
The destination sets the fd to non-blocking on incoming migrations;
this also affects the return path from the destination, and thus we
need to make sure we can safely write to the return path.
Signed-off-by: Dr. David Alan Gilbert
---
migration/qemu-file-unix.c
From: "Dr. David Alan Gilbert"
'MIGRATION_STATUS_POSTCOPY_ACTIVE' is entered after migrate_start_postcopy
'migration_postcopy_phase' is provided for other sections to know if
they're in postcopy.
Signed-off-by: Dr. David Alan Gilbert
Reviewed-by: David Gibson
Reviewed-by: Eric Blake
---
inc
From: "Dr. David Alan Gilbert"
MIG_CMD_PACKAGED is a migration command that wraps a chunk of migration
stream inside a package whose length can be determined purely by reading
its header. The destination guarantees that the whole MIG_CMD_PACKAGED
is read off the stream prior to parsing the conte
From: "Dr. David Alan Gilbert"
The state of the postcopy process is managed via a series of messages;
* Add wrappers and handlers for sending/receiving these messages
* Add state variable that track the current state of postcopy
Signed-off-by: Dr. David Alan Gilbert
---
include/migration
From: "Dr. David Alan Gilbert"
Where postcopy is preceeded by a period of precopy, the destination will
have received pages that may have been dirtied on the source after the
page was sent. The destination must throw these pages away before
starting it's CPUs.
Maintain a 'sentmap' of pages that
From: "Dr. David Alan Gilbert"
Create QEMU_VM_COMMAND section type for sending commands from
source to destination. These commands are not intended to convey
guest state but to control the migration process.
For use in postcopy.
Signed-off-by: Dr. David Alan Gilbert
---
include/migration/mig
From: "Dr. David Alan Gilbert"
Add qemu_savevm_state_complete_postcopy to complement
qemu_savevm_state_complete_precopy together with a new
save_live_complete_postcopy method on devices.
The save_live_complete_precopy method is called on
all devices during a precopy migration, and all non-postco
From: "Dr. David Alan Gilbert"
Signed-off-by: Dr. David Alan Gilbert
Reviewed-by: David Gibson
---
include/migration/migration.h| 3 +
include/migration/postcopy-ram.h | 12
migration/postcopy-ram.c | 116 +++
migration/ram.c
From: "Dr. David Alan Gilbert"
Open a return path, and handle messages that are received upon it.
Signed-off-by: Dr. David Alan Gilbert
---
include/migration/migration.h | 8 ++
migration/migration.c | 177 +-
trace-events | 1
From: "Dr. David Alan Gilbert"
Mark the area of RAM as 'userfault'
Start up a fault-thread to handle any userfaults we might receive
from it (to be filled in later)
Signed-off-by: Dr. David Alan Gilbert
Reviewed-by: David Gibson
---
include/migration/migration.h| 3 ++
include/migration/
From: "Dr. David Alan Gilbert"
Add MIG_RP_MSG_REQ_PAGES command on Return path for the postcopy
destination to request a page from the source.
Signed-off-by: Dr. David Alan Gilbert
---
include/migration/migration.h | 4 +++
migration/migration.c | 70 ++
From: "Dr. David Alan Gilbert"
Modify save_live_pending to return separate postcopiable and
non-postcopiable counts.
Signed-off-by: Dr. David Alan Gilbert
---
include/migration/vmstate.h | 5 +++--
include/sysemu/sysemu.h | 4 +++-
migration/block.c | 7 +--
migration/migr
From: "Dr. David Alan Gilbert"
When transmitting RAM pages, consume pages that have been queued by
MIG_RPCOMM_REQPAGE commands and send them ahead of normal page scanning.
Note:
a) After a queued page the linear walk carries on from after the
unqueued page; there is a reasonable chance that th
From: "Dr. David Alan Gilbert"
On receiving MIG_RPCOMM_REQ_PAGES look up the address and
queue the page.
Signed-off-by: Dr. David Alan Gilbert
---
include/migration/migration.h | 21 +++
migration/migration.c | 36 +
migration/ram.c | 6
From: "Dr. David Alan Gilbert"
Provide a check to see if the OS we're running on has all the bits
needed for postcopy.
Creates postcopy-ram.c which will get most of the other helpers we need.
Signed-off-by: Dr. David Alan Gilbert
---
include/migration/postcopy-ram.h | 19 +
migration/Mak
From: "Dr. David Alan Gilbert"
postcopy_place_page (etc) provide a way for postcopy to place a page
into guests memory atomically (using the copy ioctl on the ufd).
Signed-off-by: Dr. David Alan Gilbert
---
include/migration/migration.h| 1 +
include/migration/postcopy-ram.h | 16
From: "Dr. David Alan Gilbert"
Once we're in postcopy the source processors are stopped and memory
shouldn't change any more, so there's no need to look at the dirty
map.
There are two notes to this:
1) If we do resync and a page had changed then the page would get
sent again, which the d
From: "Dr. David Alan Gilbert"
userfaultfd is a Linux syscall that gives an fd that receives a stream
of notifications of accesses to pages registered with it and allows
the program to acknowledge those stalls and tell the accessing
thread to carry on.
We convert the requests from the kernel int
From: "Dr. David Alan Gilbert"
Rework the migration thread to setup and start postcopy.
Signed-off-by: Dr. David Alan Gilbert
---
include/migration/migration.h | 3 +
migration/migration.c | 166 --
trace-events | 4 +
3 file
From: "Dr. David Alan Gilbert"
The end of migration in postcopy is a bit different since some of
the things normally done at the end of migration have already been
done on the transition to postcopy.
The end of migration code is getting a bit complciated now, so
move out into its own function.
From: "Dr. David Alan Gilbert"
The loading of a device state (during postcopy) may access guest
memory that's still on the source machine and thus might need
a page fill; split off a separate thread that handles the incoming
page data so that the original incoming migration code can finish
off th
From: "Dr. David Alan Gilbert"
Wire up more of the handlers for the commands on the destination side,
in particular loadvm_postcopy_handle_run now has enough to start the
guest running.
Signed-off-by: Dr. David Alan Gilbert
---
migration/savevm.c | 29 -
trace-event
From: "Dr. David Alan Gilbert"
Postcopy detects accesses to pages that haven't been transferred yet
using userfaultfd, and it causes exceptions on pages that are 'not
present'.
Ballooning also causes pages to be marked as 'not present' when the
guest inflates the balloon.
Potentially a balloon co
From: "Dr. David Alan Gilbert"
In postcopy, the destination guest is running at the same time
as it's receiving pages; as we receive new pages we must put
them into the guests address space atomically to avoid a running
CPU accessing a partially written page.
Use the helpers in postcopy-ram.c to
From: "Dr. David Alan Gilbert"
Tweak the end of migration cleanup; we don't want to close stuff down
at the end of the main stream, since the postcopy is still sending pages
on the other thread.
Signed-off-by: Dr. David Alan Gilbert
---
migration/migration.c | 25 -
tra
From: "Dr. David Alan Gilbert"
Prior to the start of postcopy, ensure that everything that will
be transferred later is a whole host-page in size.
This is accomplished by discarding partially transferred host pages
and marking any that are partially dirty as fully dirty.
Signed-off-by: Dr. Davi
From: "Dr. David Alan Gilbert"
Userfault doesn't work with mlock; mlock is designed to nail down pages
so they don't move, userfault is designed to tell you when they're not
there.
munlock the pages we userfault protect before postcopy.
mlock everything again at the end if mlock is enabled.
Sig
From: "Dr. David Alan Gilbert"
Older QEMUs dont understand the new (sub)sections that
may be generated in the serial device. Limit their generation
to newer machine types.
Signed-off-by: Dr. David Alan Gilbert
---
hw/char/serial.c | 19 +--
hw/i386/pc_piix.c|
From: "Dr. David Alan Gilbert"
The VMDescription section maybe after the EOF mark, the current code
does a 'qemu_get_byte' and either gets the header byte identifying the
description or an error (which it ignores). Doing the 'get' upsets
RDMA which hangs on old machine types without the VMDescri
From: "Dr. David Alan Gilbert"
Coverity CID 1307773
Signed-off-by: Dr. David Alan Gilbert
---
migration/rdma.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/migration/rdma.c b/migration/rdma.c
index 53e611e..2a9e0ce 100644
--- a/migration/rdma.c
+++ b/migration/rdma.c
@@ -3395,6 +3395,7
From: "Dr. David Alan Gilbert"
Add a gdb command to print the current set of IOHandlers and
if one of them is a thread yielding for data print the backtrace.
Useful for debugging why an incoming migration has stalled, e.g.
{fd_read = 0x7fd4c8e40d00 , fd_write = 0x0, opaque =
0x7fd4b8
From: "Dr. David Alan Gilbert"
The VMDescription section maybe after the EOF mark, the current code
does a 'qemu_get_byte' and either gets the header byte identifying the
description or an error (which it ignores). Doing the 'get' upsets
RDMA which hangs on old machine types without the VMDescri
From: "Dr. David Alan Gilbert"
We don't join the listen thread, it does it's own cleanup.
Mark as detached not joinable.
Signed-off-by: Dr. David Alan Gilbert
Reported-by: Paolo Bonzini
---
migration/savevm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/migration/savevm
From: "Dr. David Alan Gilbert"
Hi,
This fix should go after Denis's use-after-free fix.
The first one is a minor bug fix that Paolo spotted.
The second removes the 'x-' experimental prefix now that
things seem to be running OK, and Jiri has libvirt
working with it.
Dave
Dr. David Alan Gilbert
From: "Dr. David Alan Gilbert"
Postcopy seems to have survived a cycle with only a few fixes,
and Jiri has the current libvirt wired up and working
( https://www.redhat.com/archives/libvir-list/2016-March/msg00080.html )
so lets remove the experimental tag.
Signed-off-by: Dr. David Alan Gilbert
From: "Dr. David Alan Gilbert"
We don't join the listen thread, it does its own cleanup.
Mark as detached not joinable.
Signed-off-by: Dr. David Alan Gilbert
Reported-by: Paolo Bonzini
Reviewed-by: Eric Blake
---
migration/savevm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff
From: "Dr. David Alan Gilbert"
Postcopy seems to have survived a cycle with only a few fixes,
and Jiri has the current libvirt wired up and working
( https://www.redhat.com/archives/libvir-list/2016-March/msg00080.html )
so remove the experimental tag.
Signed-off-by: Dr. David Alan Gilbert
Revi
From: "Dr. David Alan Gilbert"
Hi,
This fix should go after Denis's use-after-free fix.
The first one is a minor bug fix that Paolo spotted.
The second removes the 'x-' experimental prefix now that
things seem to be running OK, and Jiri has libvirt
working with it.
Dave
v2
Update the 'since
From: "Dr. David Alan Gilbert"
The i82801b11 bridge didn't have a vmsd and thus didn't send
any migration data, including that of its parent PCIBridge object.
The symptom being if the guest used any devices behind the bridge
the guest crashed (mostly with various interrupt related issues).
Note:
From: "Dr. David Alan Gilbert"
Pflash migration (e.g. q35 + EFI variable storage) fails
with the assert:
bdrv_co_do_pwritev: Assertion `!(bs->open_flags & 0x0800)' failed.
This avoids the problem by delaying the pflash update until after
the device loads complete.
Tested by:
Migrating Q35/EF
From: "Dr. David Alan Gilbert"
Hi,
This is a small set of postcopy changes, the largest of which
is an x86 test for postcopy.
Andrea's libqtest change came about from running my test under very heavy
load.
The test includes a self contained migration workload that rapidly changes
RAM in a pre
From: "Dr. David Alan Gilbert"
The discard code in migration/ram.c would send request for
zero length discards in the case where no discards were needed.
It doesn't appear to have had any bad effect.
Signed-off-by: Dr. David Alan Gilbert
---
migration/ram.c | 4 +++-
1 file changed, 3 insertio
From: "Dr. David Alan Gilbert"
On the source, add a count of page requests received from the
destination.
Signed-off-by: Dr. David Alan Gilbert
---
hmp.c | 4 +++
include/migration/migration.h | 2 ++
migration/migration.c | 59 ++--
From: "Dr. David Alan Gilbert"
This is a postcopy test (x86 only) that actually runs the guest
and checks the memory contents.
The test runs from an x86 boot block with the hex embedded in the test;
the source for this is:
...
.code16
.org 0x7c00
.file "fill.s"
.text
From: Andrea Arcangeli
I kept getting timeouts and unix socket accept failures under high
load, the patch fixes it.
Signed-off-by: Andrea Arcangeli
---
tests/libqtest.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tests/libqtest.c b/tests/libqtest.c
index b12a9e4..57ce29
From: "Dr. David Alan Gilbert"
The discard code in migration/ram.c would send request for
zero length discards in the case where no discards were needed.
It doesn't appear to have had any bad effect.
Signed-off-by: Dr. David Alan Gilbert
---
migration/ram.c | 4 +++-
1 file changed, 3 insertio
From: "Dr. David Alan Gilbert"
The RAM section of qmp_query_migrate is reasonably complex
and repeated 3 times. Split it out into a helper.
Signed-off-by: Dr. David Alan Gilbert
---
migration/migration.c | 57 ---
1 file changed, 22 insertions(+
From: "Dr. David Alan Gilbert"
Hi,
This is a small set of postcopy changes, the largest of which
is an x86 test for postcopy.
Andrea's libqtest change came about from running my test under very heavy
load.
The test includes a self contained migration workload that rapidly changes
RAM in a pre
From: Andrea Arcangeli
I kept getting timeouts and unix socket accept failures under high
load, the patch fixes it.
Signed-off-by: Andrea Arcangeli
---
tests/libqtest.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tests/libqtest.c b/tests/libqtest.c
index b12a9e4..57ce29
From: "Dr. David Alan Gilbert"
On the source, add a count of page requests received from the
destination.
Signed-off-by: Dr. David Alan Gilbert
---
hmp.c | 4
include/migration/migration.h | 2 ++
migration/migration.c | 2 ++
migration/ram.c
From: "Dr. David Alan Gilbert"
This is a postcopy test (x86 only) that actually runs the guest
and checks the memory contents.
The test runs from an x86 boot block with the hex embedded in the test;
the source for this is:
...
.code16
.org 0x7c00
.file "fill.s"
.text
From: "Dr. David Alan Gilbert"
Hi,
This is a small set of postcopy changes, the largest of which
is an x86 test for postcopy.
Andrea's libqtest change came about from running my test under very heavy
load.
The test includes a self contained migration workload that rapidly changes
RAM in a pre
From: "Dr. David Alan Gilbert"
The RAM section of qmp_query_migrate is reasonably complex
and repeated 3 times. Split it out into a helper.
Signed-off-by: Dr. David Alan Gilbert
Reviewed-by: Eric Blake
Reviwed-by: Denis V. Lunev
---
migration/migration.c | 57 ---
From: "Dr. David Alan Gilbert"
On the source, add a count of page requests received from the
destination.
Signed-off-by: Dr. David Alan Gilbert
Reviewed-by: Eric Blake
Reviewed-by: Denis V. Lunev
---
hmp.c | 4
include/migration/migration.h | 2 ++
migration/migr
From: "Dr. David Alan Gilbert"
This is a postcopy test (x86 only) that actually runs the guest
and checks the memory contents.
The test runs from an x86 boot block with the hex embedded in the test;
the source for this is:
...
.code16
.org 0x7c00
.file "fill.s"
.text
From: Andrea Arcangeli
I kept getting timeouts and unix socket accept failures under high
load, the patch fixes it.
Signed-off-by: Andrea Arcangeli
Reviewed-by: Marcel Apfelbaum
---
tests/libqtest.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tests/libqtest.c b/tests/l
From: "Dr. David Alan Gilbert"
The discard code in migration/ram.c would send request for
zero length discards in the case where no discards were needed.
It doesn't appear to have had any bad effect.
Signed-off-by: Dr. David Alan Gilbert
Reviewed-by: Denis V. Lunev
---
migration/ram.c | 4 +++
From: "Dr. David Alan Gilbert"
When configured with --extra-cflags=-O2 gcc optimised out the test
and the readelf failed the check leaving avx2 disabled.
The fix for that is to remove 'static' on 'foo'.
At the same time, I thought it best to be more paranoid on
checking whether both the compiler
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