The 'throttle' block driver implements .bdrv_co_drain_end, so
blockdev-reopen will have to wait for it to complete in the polling
loop at the end of qmp_blockdev_reopen(). This makes AIO_WAIT_WHILE()
release the AioContext lock, which causes a crash if the lock hasn't
correctly been taken.
From: Bernhard Beschow
Other ISA devices such as serial-isa use the properties in their
build_aml functions. fdc-isa not using them is probably an oversight.
Signed-off-by: Bernhard Beschow
Message-Id: <20220209191558.30393-1-shen...@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé
bdrv_subtree_drained_end() requires the caller to hold the AioContext
lock for the drained node. Not doing this for nodes outside of the main
AioContext leads to crashes when AIO_WAIT_WHILE() needs to wait and
tries to temporarily release the lock.
Fixes: 3908b7a8994fa5ef7a89aa58cd5a02fc58141592
The following changes since commit 0a301624c2f4ced3331ffd5bce85b4274fe132af:
Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20220208'
into staging (2022-02-08 11:40:08 +)
are available in the Git repository at:
https://gitlab.com/kmwolf/qemu.git tags/for-upstream
Am 11.02.2022 um 17:14 hat Hanna Reitz geschrieben:
> On 11.02.22 17:00, Kevin Wolf wrote:
> > Am 11.02.2022 um 14:53 hat Thomas Huth geschrieben:
> > > On 11/02/2022 10.29, Kevin Wolf wrote:
> > > > Am 09.02.2022 um 11:15 hat Thomas Huth geschrieben:
> > > > > If multiple tests run in parallel,
On 11.02.22 17:31, Eric Blake wrote:
On Thu, Feb 10, 2022 at 02:31:19PM +0100, Fabian Ebner wrote:
Adds support for reading from stdin and writing to stdout (when raw
format is used), as well as overriding the size of the output and
input image/stream.
Additionally, the options -n for skipping
Am 09.02.2022 um 20:15 hat Bernhard Beschow geschrieben:
> Other ISA devices such as serial-isa use the properties in their
> build_aml functions. fdc-isa not using them is probably an oversight.
>
> Signed-off-by: Bernhard Beschow
Thanks, applied to the block branch.
Kevin
On 11/02/2022 17.14, Eric Blake wrote:
On Tue, Feb 08, 2022 at 03:52:19PM +0100, Thomas Huth wrote:
The current code with $SED has been introduced almost three years
ago already...
Can’t we just do `alias sed=gsed`?
Maybe ... but let's ask Philippe and Kevin first, who Signed-off
commit
On Thu, Feb 10, 2022 at 02:31:19PM +0100, Fabian Ebner wrote:
> Adds support for reading from stdin and writing to stdout (when raw
> format is used), as well as overriding the size of the output and
> input image/stream.
>
> Additionally, the options -n for skipping output image creation and -l
On Tue, Feb 08, 2022 at 03:52:19PM +0100, Thomas Huth wrote:
> > > The current code with $SED has been introduced almost three years
> > > ago already...
> > >
> > > > Can’t we just do `alias sed=gsed`?
> > >
> > > Maybe ... but let's ask Philippe and Kevin first, who Signed-off
> > > commit
Am 11.02.2022 um 14:53 hat Thomas Huth geschrieben:
> On 11/02/2022 10.29, Kevin Wolf wrote:
> > Am 09.02.2022 um 11:15 hat Thomas Huth geschrieben:
> > > If multiple tests run in parallel, they must use unique file
> > > names for the test output.
> > >
> > > Suggested-by: Hanna Reitz
> > >
Am 08.02.2022 um 16:36 hat Emanuele Giuseppe Esposito geschrieben:
> This test uses a callback of an I/O function (blk_aio_preadv)
> to modify the graph, using bdrv_attach_child.
> This is simply not allowed anymore. I/O cannot change the graph.
The callback of an I/O function isn't I/O, though.
Signed-off-by: Emanuele Giuseppe Esposito
---
job.c | 10 ++
1 file changed, 10 insertions(+)
diff --git a/job.c b/job.c
index 54db80df66..075c6f3a20 100644
--- a/job.c
+++ b/job.c
@@ -381,6 +381,8 @@ void job_ref(Job *job)
void job_unref(Job *job)
{
+GLOBAL_STATE_CODE();
+
Snapshots run also under the BQL, so they all are
in the global state API. The aiocontext lock that they hold
is currently an overkill and in future could be removed.
Signed-off-by: Emanuele Giuseppe Esposito
---
block/snapshot.c | 28
Signed-off-by: Emanuele Giuseppe Esposito
---
include/block/block_int-common.h | 81 ++--
1 file changed, 47 insertions(+), 34 deletions(-)
diff --git a/include/block/block_int-common.h b/include/block/block_int-common.h
index f05ebb0da3..5a04c778e4 100644
---
The job API will be handled separately in another serie.
Signed-off-by: Emanuele Giuseppe Esposito
---
include/qemu/job.h | 22 ++
1 file changed, 22 insertions(+)
diff --git a/include/qemu/job.h b/include/qemu/job.h
index 6e67b6977f..c105b31076 100644
---
Assertions in the callers of the function pointrs are already
added by previous patches.
Signed-off-by: Emanuele Giuseppe Esposito
Reviewed-by: Stefan Hajnoczi
Reviewed-by: Philippe Mathieu-Daudé
---
include/sysemu/block-backend-common.h | 28 ++-
1 file changed, 23
Signed-off-by: Emanuele Giuseppe Esposito
---
block.c| 18 ++
block/create.c | 2 ++
2 files changed, 20 insertions(+)
diff --git a/block.c b/block.c
index 7cacb5a1a7..d1f5cd2b39 100644
--- a/block.c
+++ b/block.c
@@ -529,6 +529,7 @@ static void coroutine_fn
Similar to the header split, also the function pointers in BlockDriver
can be split in I/O and global state.
Signed-off-by: Emanuele Giuseppe Esposito
---
include/block/block_int-common.h | 445 ---
1 file changed, 237 insertions(+), 208 deletions(-)
diff --git
block coroutines functions run in different aiocontext, and are
not protected by the BQL. Therefore are I/O.
On the other side, generated_co_wrapper functions use BDRV_POLL_WHILE,
meaning the caller can either be the main loop or a specific iothread.
Signed-off-by: Emanuele Giuseppe Esposito
Signed-off-by: Emanuele Giuseppe Esposito
---
block/block-backend.c | 3 +++
blockdev.c| 16
2 files changed, 19 insertions(+)
diff --git a/block/block-backend.c b/block/block-backend.c
index e5708702db..d8a77a5832 100644
--- a/block/block-backend.c
+++
Mark all I/O functions with IO_CODE, and all "I/O OR GS" with
IO_OR_GS_CODE.
Signed-off-by: Emanuele Giuseppe Esposito
---
block.c | 14 +-
block/block-backend.c| 2 ++
block/dirty-bitmap.c | 3 +++
block/io.c | 13
Signed-off-by: Emanuele Giuseppe Esposito
---
block.c | 10 +-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/block.c b/block.c
index d1f5cd2b39..4297431812 100644
--- a/block.c
+++ b/block.c
@@ -1497,7 +1497,7 @@ const BdrvChildClass child_of_bds = {
AioContext
Mark all I/O functions with IO_CODE, and all "I/O OR GS" with
IO_OR_GS_CODE.
Signed-off-by: Emanuele Giuseppe Esposito
---
block.c | 35 +++-
block/dirty-bitmap.c | 1 +
block/io.c | 43 ++--
Signed-off-by: Emanuele Giuseppe Esposito
---
blockjob.c | 11 +++
1 file changed, 11 insertions(+)
diff --git a/blockjob.c b/blockjob.c
index d79a52d204..4868453d74 100644
--- a/blockjob.c
+++ b/blockjob.c
@@ -62,6 +62,7 @@ static bool is_block_job(Job *job)
BlockJob
Signed-off-by: Emanuele Giuseppe Esposito
---
blockjob.c | 5 +
1 file changed, 5 insertions(+)
diff --git a/blockjob.c b/blockjob.c
index 10815a89fe..d79a52d204 100644
--- a/blockjob.c
+++ b/blockjob.c
@@ -84,6 +84,7 @@ BlockJob *block_job_get(const char *id)
void block_job_free(Job *job)
Following the assertion derived from the API split,
propagate the assertion also in the static functions.
Signed-off-by: Emanuele Giuseppe Esposito
---
block.c | 47 ++-
block/block-backend.c | 3 +++
2 files changed, 49 insertions(+), 1
Mark all I/O functions with IO_CODE, and all "I/O OR GS" with
IO_OR_GS_CODE.
Signed-off-by: Emanuele Giuseppe Esposito
---
block/block-backend.c | 57 +++
include/sysemu/block-backend-io.h | 2 ++
2 files changed, 59 insertions(+)
diff --git
Similarly to the previous patches, split block-backend.h
in block-backend-io.h and block-backend-global-state.h
In addition, remove "block/block.h" include as it seems
it is not necessary anymore, together with "qemu/iov.h"
block-backend-common.h contains the structures shared between
the two
blockdev functions run always under the BQL lock.
Signed-off-by: Emanuele Giuseppe Esposito
---
include/sysemu/blockdev.h | 13 ++---
1 file changed, 10 insertions(+), 3 deletions(-)
diff --git a/include/sysemu/blockdev.h b/include/sysemu/blockdev.h
index f9fb54d437..3211b16513 100644
We want to be sure that the functions that write the child and
parent list of a bs are under BQL and drain.
BQL prevents from concurrent writings from the GS API, while
drains protect from I/O.
TODO: drains are missing in some functions using this assert.
Therefore a proper assertion will fail.
Similarly to the previous patch, split block_int.h
in block_int-io.h and block_int-global-state.h
block_int-common.h contains the structures shared between
the two headers, and the functions that can't be categorized as
I/O or global state.
Assertions are added in the next patch.
Signed-off-by:
Righ now, IO_CODE and IO_OR_GS_CODE are nop, as there isn't
really a way to check that a function is only called in I/O.
On the other side, we can use qemu_in_main_thread to check if
we are in the main loop.
Signed-off-by: Emanuele Giuseppe Esposito
---
include/qemu/main-loop.h | 9 +
1
All the global state (GS) API functions will check that
qemu_in_main_thread() returns true. If not, it means
that the safety of BQL cannot be guaranteed, and
they need to be moved to I/O.
Signed-off-by: Emanuele Giuseppe Esposito
---
block.c| 125
All the global state (GS) API functions will check that
qemu_in_main_thread() returns true. If not, it means
that the safety of BQL cannot be guaranteed, and
they need to be moved to I/O.
Signed-off-by: Emanuele Giuseppe Esposito
---
block/block-backend.c | 79
Since the I/O functions are not many, keep a single file.
Also split the function pointers in BlockJobDriver.
Signed-off-by: Emanuele Giuseppe Esposito
Reviewed-by: Stefan Hajnoczi
---
include/block/blockjob_int.h | 28
1 file changed, 28 insertions(+)
diff --git
Signed-off-by: Emanuele Giuseppe Esposito
---
block.c | 15 +++
block/backup.c | 1 +
block/block-backend.c | 3 +++
block/commit.c | 2 ++
block/dirty-bitmap.c| 1 +
block/io.c |
When invoked from the main loop, this function is the same
as qemu_mutex_iothread_locked, and returns true if the BQL is held.
When invoked from iothreads or tests, it returns true only
if the current AioContext is the Main Loop.
This essentially just extends qemu_mutex_iothread_locked to work
Currently, block layer APIs like block.h contain a mix of
functions that are either running in the main loop and under the
BQL, or are thread-safe functions and run in iothreads performing I/O.
The functions running under BQL also take care of modifying the
block graph, by using drain and/or
On 11/02/2022 10.29, Kevin Wolf wrote:
Am 09.02.2022 um 11:15 hat Thomas Huth geschrieben:
If multiple tests run in parallel, they must use unique file
names for the test output.
Suggested-by: Hanna Reitz
Signed-off-by: Thomas Huth
---
tests/qemu-iotests/testrunner.py | 2 +-
1 file
From: Hanna Reitz
We start the open timer to cancel the connection attempt after a while.
Once nbd_do_establish_connection() has returned, the attempt is over,
and we no longer need the timer.
Delete it before returning from nbd_open(), so that it does not persist
for longer. It has no use
From: Hanna Reitz
Put an NBD block device into an I/O thread, and then read data from it,
hoping that the NBD connection will yield during that read. When it
does, the coroutine must be reentered in the block device's I/O thread,
which will only happen if the NBD block driver attaches the
From: Hanna Reitz
s->ioc must always be attached to the NBD node's AioContext. If that
context changes, s->ioc must be attached to the new context.
Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=2033626
Reviewed-by: Vladimir Sementsov-Ogievskiy
Signed-off-by: Hanna Reitz
Signed-off-by:
From: Hanna Reitz
We start the reconnect delay timer to cancel the reconnection attempt
after a while. Once nbd_co_do_establish_connection() has returned, this
attempt is over, and we no longer need the timer.
Delete it before returning from nbd_reconnect_attempt(), so that it does
not persist
The following changes since commit 0a301624c2f4ced3331ffd5bce85b4274fe132af:
Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20220208'
into staging (2022-02-08 11:40:08 +)
are available in the Git repository at:
https://src.openvz.org/scm/~vsementsov/qemu.git
11.02.2022 15:52, Peter Maydell wrote:
On Wed, 9 Feb 2022 at 14:03, Vladimir Sementsov-Ogievskiy
wrote:
The following changes since commit 0a301624c2f4ced3331ffd5bce85b4274fe132af:
Merge remote-tracking branch
'remotes/pmaydell/tags/pull-target-arm-20220208' into staging (2022-02-08
On Wed, 9 Feb 2022 at 14:03, Vladimir Sementsov-Ogievskiy
wrote:
>
> The following changes since commit 0a301624c2f4ced3331ffd5bce85b4274fe132af:
>
> Merge remote-tracking branch
> 'remotes/pmaydell/tags/pull-target-arm-20220208' into staging (2022-02-08
> 11:40:08 +)
>
> are available in
Am 08.02.2022 um 16:36 hat Emanuele Giuseppe Esposito geschrieben:
> Doing the opposite can make adding the child node to a non-drained node,
> as apply_subtree_drain is only done in ->attach() and thus make
> assert_bdrv_graph_writable fail.
>
> This can happen for example during a transaction
From: Hanna Reitz
Prior to "block/nbd: Delete reconnect delay timer when done" and
"block/nbd: Delete open timer when done", both of those timers would
remain scheduled even after successfully (re-)connecting to the server,
and they would not even be deleted when the BDS is deleted.
This test
From: Hanna Reitz
This is a rather simple class that allows creating a QSD instance
running in the background and stopping it when no longer needed.
The __del__ handler is a safety net for when something goes so wrong in
a test that e.g. the tearDown() method is not called (e.g. setUp()
From: Hanna Reitz
Our two timers must not remain armed beyond nbd_clear_bdrvstate(), or
they will access freed data when they fire.
This patch is separate from the patches that actually fix the issue
(HEAD^^ and HEAD^) so that you can run the associated regression iotest
(281) on a
Jonah Palmer writes:
> From: Laurent Vivier
>
> Display feature names instead of bitmaps for host, guest, and
> backend for VirtIODevices.
>
> Display status names instead of bitmaps for VirtIODevices.
>
> Display feature names instead of bitmaps for backend, protocol,
> acked, and features
Am 08.02.2022 um 16:36 hat Emanuele Giuseppe Esposito geschrieben:
> Doing the opposite can make ->detach() (more precisely
> bdrv_unapply_subtree_drain() in bdrv_child_cb_detach) undo the subtree_drain
> just performed to protect the removal of the child from the graph,
> thus making the
Jonah Palmer writes:
> From: Laurent Vivier
>
> This new command shows the information of a VirtQueue element.
>
> [Note: Up until v10 of this patch series, virtio.json had many (15+)
> enums defined (e.g. decoded device features, statuses, etc.). In v10
> most of these enums were removed and
Jonah Palmer writes:
> From: Laurent Vivier
>
> These new commands show the internal status of a VirtIODevice's
> VirtQueue and a vhost device's vhost_virtqueue (if active).
>
> Signed-off-by: Jonah Palmer
QAPI schema
Acked-by: Markus Armbruster
Jonah Palmer writes:
> From: Laurent Vivier
>
> This new command shows the information of a VirtQueue element.
>
> [Note: Up until v10 of this patch series, virtio.json had many (15+)
> enums defined (e.g. decoded device features, statuses, etc.). In v10
> most of these enums were removed and
Jonah Palmer writes:
> From: Laurent Vivier
>
> This new command shows the status of a VirtIODevice, including
> its corresponding vhost device's status (if active).
>
> Next patch will improve output by decoding feature bits, including
> vhost device's feature bits (backend, protocol, acked,
Jonah Palmer writes:
> From: Laurent Vivier
>
> These new commands show the internal status of a VirtIODevice's
> VirtQueue and a vhost device's vhost_virtqueue (if active).
>
> Signed-off-by: Jonah Palmer
QAPI schema
Acked-by: Markus Armbruster
Jonah Palmer writes:
> From: Laurent Vivier
>
> This new command lists all the instances of VirtIODevices with
> their canonical QOM path and name.
>
> [Jonah: @virtio_list duplicates information that already exists in
> the QOM composition tree. However, extracting necessary information
>
Am 08.02.2022 um 16:36 hat Emanuele Giuseppe Esposito geschrieben:
> Using bdrv_do_drained_begin_quiesce() in bdrv_child_cb_drained_begin()
> is not a good idea: the callback might be called when running
> a drain in a coroutine, and bdrv_drained_begin_poll() does not
> handle that case, resulting
Am 03.02.2022 um 15:19 hat Stefan Hajnoczi geschrieben:
> On Thu, Feb 03, 2022 at 10:56:49AM +, Daniel P. Berrangé wrote:
> > On Thu, Feb 03, 2022 at 10:53:07AM +, Stefan Hajnoczi wrote:
> > > On Wed, Feb 02, 2022 at 06:52:34PM +0100, Nicolas Saenz Julienne wrote:
> > > > The thread pool
11.02.2022 12:29, Kevin Wolf wrote:
Am 09.02.2022 um 11:15 hat Thomas Huth geschrieben:
If multiple tests run in parallel, they must use unique file
names for the test output.
Suggested-by: Hanna Reitz
Signed-off-by: Thomas Huth
---
tests/qemu-iotests/testrunner.py | 2 +-
1 file changed,
On Thu, 2022-02-03 at 14:19 +, Stefan Hajnoczi wrote:
> Yep, I didn't comment on this because I don't have a good suggestion.
>
> In terms of semantics I think we should have:
>
> 1. A global default value that all new AioContext take. The QEMU main
>loop's qemu_aio_context will use this
Am 09.02.2022 um 11:15 hat Thomas Huth geschrieben:
> If multiple tests run in parallel, they must use unique file
> names for the test output.
>
> Suggested-by: Hanna Reitz
> Signed-off-by: Thomas Huth
> ---
> tests/qemu-iotests/testrunner.py | 2 +-
> 1 file changed, 1 insertion(+), 1
On 10/02/2022 18:35, Stefan Hajnoczi wrote:
> On Thu, Feb 10, 2022 at 05:26:52PM +0100, Emanuele Giuseppe Esposito wrote:
>>
>>
>> On 10/02/2022 16:40, Stefan Hajnoczi wrote:
>>> On Tue, Feb 08, 2022 at 09:34:55AM -0500, Emanuele Giuseppe Esposito wrote:
Categorize the fields in struct Job
Am 09.02.2022 um 11:15 hat Thomas Huth geschrieben:
> Instead of failing the iotests if GNU sed is not available (or skipping
> them completely in the check-block.sh script), it would be better to
> simply skip the bash-based tests, so that the python-based tests could
> still be run. Thus add the
On Jan 26 18:11, Lukasz Maniak wrote:
> From: Łukasz Gieryk
>
> The n->reg_size parameter unnecessarily splits the BAR0 size calculation
> in two phases; removed to simplify the code.
>
> With all the calculations done in one place, it seems the pow2ceil,
> applied originally to reg_size, is
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