By increasing avx2 length_to_accel to 128, we can simplify its logic and reduce
a
branch.
The authorship of this patch actually belongs to Richard Henderson
,
I just fix a boudary case on his original patch.
Suggested-by: Richard Henderson
Signed-off-by: Robert Hoo
---
util/bufferiszero.c |
Because in unit test, init_accel() will be called several times, each with
different accelerator type.
Signed-off-by: Robert Hoo
---
util/bufferiszero.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/util/bufferiszero.c b/util/bufferiszero.c
index 6639035..b801253 100644
--- a/util/buffe
With qemu4 an incompatible change was added to pc_piix, which makes it
practical impossible to migrate domUs started with qemu2 or qemu3 to
newer qemu versions. Commit 7fccf2a06890e3bc3b30e29827ad3fb93fe88fea
added and enabled a new member "smbus_no_migration_support". In commit
4ab2f2a8aabfea95cc5
but error_setg() also calls malloc, so this does not help at all?
> On March 24, 2020 8:48 PM Philippe Mathieu-Daudé wrote:
>
>
> Similarly to commit 807e2b6fce0 for Windows, kindly return a
> QMP error message instead of crashing the whole process.
>
> Cc: qemu-sta...@nongnu.org
> Buglink: h
** Merge proposal unlinked:
https://code.launchpad.net/~paelzer/ubuntu/+source/qemu/+git/qemu/+merge/381033
--
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1867519
Title:
qemu 4.2 segfaults on VF
> -Original Message-
> From: Derek Su
> Sent: Wednesday, March 25, 2020 12:17 PM
> To: Zhang, Chen
> Cc: qemu-devel@nongnu.org; lizhij...@cn.fujitsu.com;
> jasow...@redhat.com; dere...@qnap.com
> Subject: Re: [PATCH v2 1/1] net/colo-compare.c: Fix memory leak in
> packet_enqueue()
>
>
> From: Dr. David Alan Gilbert
> Sent: Wednesday, March 25, 2020 4:23 AM
>
> * Alex Williamson (alex.william...@redhat.com) wrote:
> > On Mon, 23 Mar 2020 23:01:18 -0400
> > Yan Zhao wrote:
> >
> > > On Tue, Mar 24, 2020 at 02:51:14AM +0800, Dr. David Alan Gilbert wrote:
> > > > * Alex Williamso
24.03.2020 23:03, Eric Blake wrote:
On 3/24/20 10:36 AM, Vladimir Sementsov-Ogievskiy wrote:
local_err is used several times in guest_suspend(). Setting non-NULL
local_err will crash, so let's zero it after freeing. Also fix possible
leak of local_err in final if().
Signed-off-by: Vladimir Seme
Jing-Wei Su 於 2020年3月25日 週三 上午10:05寫道：
>
> Zhang, Chen 於 2020年3月25日 週三 上午9:37寫道：
> >
> >
> >
> > > -Original Message-
> > > From: Jing-Wei Su
> > > Sent: Tuesday, March 24, 2020 10:47 AM
> > > To: Zhang, Chen
> > > Cc: qemu-devel@nongnu.org; lizhij...@cn.fujitsu.com;
> > > jasow...@redh
v1->v2:
- Patch1: Add John Snow review comment.
- Patch9: Move the 'dst_type' declaration to while() statement.
- Patch12: Add Philippe Mathieu-Daud?? review comment.
- Patch13: Move the 'set' declaration to the for() statement.
v2->v3:
- Patch1: Add Kevin Wolf review comment.
- Patch2: Keep the '
Clang static code analyzer show warning:
hw/display/blizzard.c:940:9: warning: Value stored to 'data' is never read
data >>= 5;
^~
Reported-by: Euler Robot
Signed-off-by: Chen Qun
---
Cc: Andrzej Zaborowski
Cc: Peter Maydell
v1->v2: Use extract16() function instead of
Clang static code analyzer show warning:
hw/scsi/esp-pci.c:198:9: warning: Value stored to 'size' is never read
size = 4;
^ ~
Reported-by: Euler Robot
Signed-off-by: Chen Qun
Reviewed-by: Laurent Vivier
---
Cc: Paolo Bonzini
Cc:Fam Zheng
v1->v2:
keep ' size = 4' and
Clang static code analyzer show warning:
hw/timer/exynos4210_mct.c:1370:9: warning: Value stored to 'index' is never read
index = GET_L_TIMER_CNT_REG_IDX(offset, lt_i);
^ ~
hw/timer/exynos4210_mct.c:1399:9: warning: Value stored to 'index' i
On Thu, Mar 12, 2020 at 11:54:50AM +0100, Igor Mammedov wrote:
>
> On Thu, 12 Mar 2020 01:36:48 -0400
> Raphael Norwitz wrote:
>
> > When I try run master qemu I am hitting a divide by zero error. It seems
> > to be coming from util/oslib-posix.c in touch_all_pages(). see line 477:
> >
> > nump
On 3/11/20 3:09 PM, Gavin Shan wrote:
The depth of TxFIFO can be 1 or 16 depending on LCR[4]. The TxFIFO is
disabled when its depth is 1. It's nice to have TxFIFO enabled if
possible because more characters can be piled and transmitted at once,
which would have less overhead. Besides, we can be b
On Wed, Mar 25, 2020 at 05:09:12AM +0800, Kirti Wankhede wrote:
> vfio_listener_log_sync gets list of dirty pages from container using
> VFIO_IOMMU_GET_DIRTY_BITMAP ioctl and mark those pages dirty when all
> devices are stopped and saving state.
> Return early for the RAM block section of mapped M
On Wed, Mar 25, 2020 at 03:32:37AM +0800, Kirti Wankhede wrote:
> DMA mapped pages, including those pinned by mdev vendor drivers, might
> get unpinned and unmapped while migration is active and device is still
> running. For example, in pre-copy phase while guest driver could access
> those pages,
On Tue, 24 Mar 2020 18:04:30 +0100
Cornelia Huck wrote:
> On Thu, 6 Feb 2020 22:45:03 +0100
> Eric Farman wrote:
>
> > From: Farhan Ali
> >
> > EIO is returned by vfio-ccw mediated device when the backing
> > host subchannel is not operational anymore. So return cc=3
> > back to the guest, r
On Wed, Mar 25, 2020 at 05:18:52AM +0800, Kirti Wankhede wrote:
> VFIO_IOMMU_DIRTY_PAGES ioctl performs three operations:
> - Start dirty pages tracking while migration is active
> - Stop dirty pages tracking.
> - Get dirty pages bitmap. Its user space application's responsibility to
> copy conte
Zhang, Chen 於 2020年3月25日 週三 上午9:37寫道：
>
>
>
> > -Original Message-
> > From: Jing-Wei Su
> > Sent: Tuesday, March 24, 2020 10:47 AM
> > To: Zhang, Chen
> > Cc: qemu-devel@nongnu.org; lizhij...@cn.fujitsu.com;
> > jasow...@redhat.com; dere...@qnap.com
> > Subject: Re: [PATCH v2 1/1] net/c
run:
(qemu) info migrate_parameters
announce-initial: 50 ms
...
announce-max: 550 ms
multifd-compression: none
xbzrle-cache-size: 4194304
max-postcopy-bandwidth: 0
tls-authz: '(null)'
Migration parameter 'tls-authz' is used to provide the QOM ID
of a QAuthZ subclass instance that provides the acc
> -Original Message-
> From: Jing-Wei Su
> Sent: Tuesday, March 24, 2020 10:47 AM
> To: Zhang, Chen
> Cc: qemu-devel@nongnu.org; lizhij...@cn.fujitsu.com;
> jasow...@redhat.com; dere...@qnap.com
> Subject: Re: [PATCH v2 1/1] net/colo-compare.c: Fix memory leak in
> packet_enqueue()
>
>
Peter: I think your intuition is right. The POPQ_RA (pop quad, passing
through return address handle) is only called from helper_ret_protected,
and it suspiciously calls cpu_ldq_kernel_ra which calls
cpu_mmu_index_kernel which only is prepared for kernel space iretq (and
of course the substring _k
On Tue, Mar 24, 2020 at 10:49:54PM +0800, Alex Williamson wrote:
> On Tue, 24 Mar 2020 09:23:31 +
> "Dr. David Alan Gilbert" wrote:
>
> > * Yan Zhao (yan.y.z...@intel.com) wrote:
> > > On Tue, Mar 24, 2020 at 05:29:59AM +0800, Alex Williamson wrote:
> > > > On Mon, 3 Jun 2019 20:34:22 -0400
Thanks for this investigation so far!
We've opened an upstream VTE issue at
https://gitlab.gnome.org/GNOME/vte/issues/222 .
We'd appreciate if QEMU developers joined us there. Apparently QEMU uses
the "commit" signal in a way that it was not meant to be used, and thus
it's unclear what the best s
Patchew URL:
https://patchew.org/QEMU/1585084154-29461-1-git-send-email-kwankh...@nvidia.com/
Hi,
This series failed the docker-quick@centos7 build test. Please find the testing
commands and
their output below. If you have Docker installed, you can probably reproduce it
locally.
=== TEST SCR
Thanks Gerd. I will switch over to using tracepoints, wait a few days to
see if there are any more comments, then resubmit.
Thanks,
Paul
On Mon, Mar 23, 2020 at 4:10 AM Gerd Hoffmann wrote:
> Hi,
>
> > 1) I have used printf-based debug statements while developing the
> >code, and have not
Like script_main, but doesn't require a single point of entry.
Replace all existing initialization sections with this drop-in replacement.
This brings debug support to all existing script-style iotests.
Signed-off-by: John Snow
Reviewed-by: Max Reitz
---
tests/qemu-iotests/149| 3 +-
Since this one is nicely factored to use a single entry point,
use script_main to run the tests.
Signed-off-by: John Snow
Reviewed-by: Philippe Mathieu-Daudé
Reviewed-by: Max Reitz
---
tests/qemu-iotests/258 | 11 ---
1 file changed, 4 insertions(+), 7 deletions(-)
diff --git a/tests/
Representing nested, recursive data structures in mypy is notoriously
difficult; the best we can reliably do right now is denote the atom
types as "Any" while describing the general shape of the data.
Regardless, this fully annotates the log() function.
Typing notes:
TypeVar is a Type variable t
This allows others to get repeatable results with pylint. If you run
`pylint iotests.py`, you should see a 100% pass.
Signed-off-by: John Snow
Reviewed-by: Max Reitz
---
tests/qemu-iotests/pylintrc | 22 ++
1 file changed, 22 insertions(+)
create mode 100644 tests/qemu-iote
The right way to solve this is to come up with a virtual environment
infrastructure that sets all the paths correctly, and/or to create
installable python modules that can be imported normally.
That's hard, so just silence this error for now.
Reviewed-by: Philippe Mathieu-Daudé
Reviewed-by: Max
We no longer need to accommodate 3.4, drop this code.
(The lines were > 79 chars and it stood out.)
Signed-off-by: John Snow
---
tests/qemu-iotests/iotests.py | 5 +
1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
ind
Just a mild cleanup while I was here.
Although we now have universal qmp logging on or off, many existing
callers to hmp functions don't expect that output to be logged, which
causes quite a few changes in the test output.
For now, just offer a use_log parameter.
Signed-off-by: John Snow
---
t
We can turn logging on/off globally instead of per-function.
Remove use_log from run_job, and use python logging to turn on
diffable output when we run through a script entry point.
iotest 245 changes output order due to buffering reasons.
An extended note on python logging:
A NullHandler is a
Mark the verify functions as "private" with a leading underscore, to
discourage their use.
(Also, make pending patches not yet using the new entry points fail in a
very obvious way.)
Signed-off-by: John Snow
Reviewed-by: Max Reitz
---
tests/qemu-iotests/iotests.py | 20 ++--
1
I had to fix a merge conflict, so do this tiny harmless thing while I'm
here.
Signed-off-by: John Snow
---
tests/qemu-iotests/iotests.py | 18 +-
1 file changed, 9 insertions(+), 9 deletions(-)
diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
index 20da
79 is the PEP8 recommendation. This recommendation works well for
reading patch diffs in TUI email clients.
Signed-off-by: John Snow
---
tests/qemu-iotests/iotests.py | 64 +++
tests/qemu-iotests/pylintrc | 6 +++-
2 files changed, 47 insertions(+), 23 deletion
It shadows (with a different type) the built-in format.
Use something else.
Signed-off-by: John Snow
Reviewed-by: Philippe Mathieu-Daudé
Reviewed-by: Max Reitz
---
tests/qemu-iotests/055| 3 ++-
tests/qemu-iotests/iotests.py | 6 +++---
2 files changed, 5 insertions(+), 4 deletions(-)
It's bad hygiene: if we modify this list, it will be modified across all
invocations.
(Remaining bad usages are fixed in a subsequent patch which changes the
function signature anyway.)
Signed-off-by: John Snow
Reviewed-by: Philippe Mathieu-Daudé
Reviewed-by: Max Reitz
---
tests/qemu-iotests/
This doesn't fix everything in here, but it does help clean up the
pylint report considerably.
This should be 100% style changes only; the intent is to make pylint
more useful by working on establishing a baseline for iotests that we
can gate against in the future.
Signed-off-by: John Snow
Revie
This series uses python logging to enable output conditionally on
iotests.log(). We unify an initialization call (which also enables
debugging output for those tests with -d) and then make the switch
inside of iotests.
It will help alleviate the need to create logged/unlogged versions
of all the v
Thanks for the explanation.
On Tue, Mar 24, 2020 at 5:17 PM Peter Maydell
wrote:
> On Tue, 24 Mar 2020 at 20:39, Mansour Ahmadi wrote:
> >
> > Thank you for looking into this, Peter. I agree that static analysis has
> false positives; that's why I called them potential. Basically, they are
> f
Thank you for looking into this, Peter. I agree that static analysis has
false positives; that's why I called them potential. Basically, they are
found based on code similarity so I might be wrong and I need a second
opinion from QEMU developers. I appreciate your effort.
For the first case, I not
Le 24/03/2020 à 14:14, Peter Maydell a écrit :
> On Tue, 24 Mar 2020 at 12:32, Laurent Vivier wrote:
>> OK, I think there is an existing problem in the build dependencies.
>>
>> Do you use enable all targets ("configure" without parameters)?
>> Do you run make with "all" or "x86_64-linux-user/all"
Hello,
On behalf of the QEMU Team, I'd like to announce the availability of the
first release candidate for the QEMU 5.0 release. This release is meant
for testing purposes and should not be used in a production environment.
http://download.qemu-project.org/qemu-5.0.0-rc0.tar.xz
http://downl
On 3/25/2020 2:15 AM, Alex Williamson wrote:
On Tue, 24 Mar 2020 14:37:16 -0600
Alex Williamson wrote:
On Wed, 25 Mar 2020 01:02:36 +0530
Kirti Wankhede wrote:
VFIO_IOMMU_DIRTY_PAGES ioctl performs three operations:
- Start dirty pages tracking while migration is active
- Stop dirty page
VFIO_IOMMU_DIRTY_PAGES ioctl performs three operations:
- Start dirty pages tracking while migration is active
- Stop dirty pages tracking.
- Get dirty pages bitmap. Its user space application's responsibility to
copy content of dirty pages from source to destination during migration.
To prevent
If device is not failover primary device call vfio_migration_probe()
and vfio_migration_finalize() functions for vfio-pci device to enable
migration for vfio PCI device which support migration.
Removed vfio_pci_vmstate structure.
Removed migration blocker from VFIO PCI device specific structure and
Define flags to be used as delimeter in migration file stream.
Added .save_setup and .save_cleanup functions. Mapped & unmapped migration
region from these functions at source during saving or pre-copy phase.
Set VFIO device state depending on VM's state. During live migration, VM is
running when .
vfio_listener_log_sync gets list of dirty pages from container using
VFIO_IOMMU_GET_DIRTY_BITMAP ioctl and mark those pages dirty when all
devices are stopped and saving state.
Return early for the RAM block section of mapped MMIO region.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
---
h
Added migration state change notifier to get notification on migration state
change. These states are translated to VFIO device state and conveyed to vendor
driver.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
---
hw/vfio/migration.c | 29 +
hw/vfio/t
Add optional method to get address limit IOMMU supports
Signed-off-by: Kirti Wankhede
---
hw/i386/intel_iommu.c | 9 +
include/exec/memory.h | 19 +++
memory.c | 11 +++
3 files changed, 39 insertions(+)
diff --git a/hw/i386/intel_iommu.c b/hw/i386/
Call VFIO_IOMMU_DIRTY_PAGES ioctl to start and stop dirty pages tracking
for VFIO devices.
Signed-off-by: Kirti Wankhede
---
hw/vfio/migration.c | 36
1 file changed, 36 insertions(+)
diff --git a/hw/vfio/migration.c b/hw/vfio/migration.c
index ab295d25620e.
With vIOMMU, IO virtual address range can get unmapped while in pre-copy phase
of migration. In that case, unmap ioctl should return pages pinned in that range
and QEMU should find its correcponding guest physical addresses and report
those dirty.
Note: This patch is not yet tested. I'm trying to
VM state change handler gets called on change in VM's state. This is used to set
VFIO device state to _RUNNING.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
---
hw/vfio/migration.c | 87 +++
hw/vfio/trace-events | 2 +
include/hw
Sequence during _RESUMING device state:
While data for this device is available, repeat below steps:
a. read data_offset from where user application should write data.
b. write data of data_size to migration region from data_offset.
c. write data_size which indicates vendor driver that data is wri
These functions save and restore PCI device specific data - config
space of PCI device.
Tested save and restore with MSI and MSIX type.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
---
hw/vfio/pci.c | 163 ++
include/hw/vfio/vfio-com
Added .save_live_pending, .save_live_iterate and .save_live_complete_precopy
functions. These functions handles pre-copy and stop-and-copy phase.
In _SAVING|_RUNNING device state or pre-copy phase:
- read pending_bytes. If pending_bytes > 0, go through below steps.
- read data_offset - indicates k
Signed-off-by: Kirti Wankhede
---
memory.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/memory.c b/memory.c
index acb7546971c3..285ca2ed6dd9 100644
--- a/memory.c
+++ b/memory.c
@@ -1788,7 +1788,7 @@ bool memory_region_is_ram_device(MemoryRegion *mr)
uint8_t memory_region_
- Migration functions are implemented for VFIO_DEVICE_TYPE_PCI device in this
patch series.
- VFIO device supports migration or not is decided based of migration region
query. If migration region query is successful and migration region
initialization is successful then migration is supported
Hi,
This Patch set adds migration support for VFIO devices in QEMU.
This Patch set include patches as below:
Patch 1:
- Define KABI for VFIO device for migration support for device state and newly
added ioctl definations to get dirty pages bitmap. This is a placeholder
patch.
Patch 2-4:
- Fe
This function will be used for migration region.
Migration region is mmaped when migration starts and will be unmapped when
migration is complete.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
Reviewed-by: Cornelia Huck
---
hw/vfio/common.c | 20
hw/vfio/
Hook vfio_get_object callback for PCI devices.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
Suggested-by: Cornelia Huck
Reviewed-by: Cornelia Huck
---
hw/vfio/pci.c | 8
include/hw/vfio/vfio-common.h | 1 +
2 files changed, 9 insertions(+)
diff --git a/hw/vfio/
Kernel header patches are being reviewed along with kernel side changes.
This patch is only for place holder.
Link to Kernel patch set:
https://lists.gnu.org/archive/html/qemu-devel/2020-03/msg07429.html
This patch include all changes in vfio.h from above patch set
Signed-off-by: Kirti Wankhede
Coverity points out (CID 1421926) that the read code for
REG_ADDR_HIGH reads off the end of the buffer, because it does a
32-bit read from byte 4 of a 6-byte buffer.
The code also has an endianness issue for both REG_ADDR_HIGH and
REG_ADDR_LOW, because it will do the wrong thing on a big-endian
ho
On Tue, Mar 24, 2020 at 7:48 PM Theodore Y. Ts'o wrote:
> On Tue, Mar 24, 2020 at 09:29:58AM +, Peter Maydell wrote:
> >
> > On the contrary, that would be a much better interface for QEMU.
> > We always know when we're doing an open-syscall on behalf
> > of the guest, and it would be trivial
On Tue, 24 Mar 2020 at 20:39, Mansour Ahmadi wrote:
>
> Thank you for looking into this, Peter. I agree that static analysis has
> false positives; that's why I called them potential. Basically, they are
> found based on code similarity so I might be wrong and I need a second
> opinion from QEM
On 3/24/20 3:55 PM, John Snow wrote:
> The following changes since commit 736cf607e40674776d752acc201f565723e86045:
>
> Update version for v5.0.0-rc0 release (2020-03-24 17:50:00 +)
>
> are available in the Git repository at:
>
> https://github.com/jnsnow/qemu.git tags/ide-pull-reques
This prevents the memory from qemu_allocate_irqs() from being leaked which
can in some cases be spotted by Coverity (CID 1421984).
Signed-off-by: Mark Cave-Ayland
---
hw/ide/via.c | 6 --
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/hw/ide/via.c b/hw/ide/via.c
index 2a55b7fb
This prevents the memory from qemu_allocate_irqs() from being leaked which
can in some cases be spotted by Coverity (CID 1421984).
Signed-off-by: Mark Cave-Ayland
---
hw/ide/cmd646.c | 9 -
1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/hw/ide/cmd646.c b/hw/ide/cmd646.c
in
On 3/20/20 1:43 PM, Halil Pasic wrote:
> On Thu, 19 Mar 2020 18:31:11 +0100
> David Hildenbrand wrote:
>
>> [...]
>>
I asked this question already to Michael (cc) via a different
channel, but hare is it again:
Why does the balloon driver not support VIRTIO_F_IOMMU_PLATFORM? I
This was supposed to be a simple patchset to switch via-ide and cmd646-ide
over to use qdev gpio in the same way as Peter's patch did for sil3112, but
at the same time I spotted a silly mistake in my last set of via-ide
patches which is included as patch 1.
I'm not sure exactly why Coverity CID 14
The PCI level calculation was accidentally left in when rebasing from a
previous patchset. Since both IRQs are driven separately, the value
being passed into the IRQ handler should be used directly.
Signed-off-by: Mark Cave-Ayland
---
hw/ide/via.c | 1 -
1 file changed, 1 deletion(-)
diff --git
On 3/24/20 4:43 PM, Mark Cave-Ayland wrote:
> On 23/03/2020 15:17, Peter Maydell wrote:
>
>> Coverity points out (CID 1421984) that we are leaking the
>> memory returned by qemu_allocate_irqs(). We can avoid this
>> leak by switching to using qdev_init_gpio_in(); the base
>> class finalize will
I've stepped/nexted from the helper_iret_protected, going deep into the
bowels of the TLB, MMU and page table engine. None of which I
understand. The helper_ret_protected faults in the first POPQ_RA. I'll
investigate the value of sp at the time of the POPQ_RA.
Here's the POPQ_RA in i386/seg_help
On Tue, 24 Mar 2020 14:37:16 -0600
Alex Williamson wrote:
> On Wed, 25 Mar 2020 01:02:36 +0530
> Kirti Wankhede wrote:
>
> > VFIO_IOMMU_DIRTY_PAGES ioctl performs three operations:
> > - Start dirty pages tracking while migration is active
> > - Stop dirty pages tracking.
> > - Get dirty pages
On 23/03/2020 15:17, Peter Maydell wrote:
> Coverity points out (CID 1421984) that we are leaking the
> memory returned by qemu_allocate_irqs(). We can avoid this
> leak by switching to using qdev_init_gpio_in(); the base
> class finalize will free the irqs that this allocates under
> the hood.
>
On Wed, 25 Mar 2020 01:02:36 +0530
Kirti Wankhede wrote:
> VFIO_IOMMU_DIRTY_PAGES ioctl performs three operations:
> - Start dirty pages tracking while migration is active
> - Stop dirty pages tracking.
> - Get dirty pages bitmap. Its user space application's responsibility to
> copy content of
* Alex Williamson (alex.william...@redhat.com) wrote:
> On Mon, 23 Mar 2020 23:01:18 -0400
> Yan Zhao wrote:
>
> > On Tue, Mar 24, 2020 at 02:51:14AM +0800, Dr. David Alan Gilbert wrote:
> > > * Alex Williamson (alex.william...@redhat.com) wrote:
> > > > On Mon, 23 Mar 2020 23:24:37 +0530
> > >
Added a check such that only singleton IOMMU groups can pin pages.
>From the point when vendor driver pins any pages, consider IOMMU group
dirty page scope to be limited to pinned pages.
To optimize to avoid walking list often, added flag
pinned_page_dirty_scope to indicate if all of the vfio_grou
VFIO_IOMMU_DIRTY_PAGES ioctl performs three operations:
- Start dirty pages tracking while migration is active
- Stop dirty pages tracking.
- Get dirty pages bitmap. Its user space application's responsibility to
copy content of dirty pages from source to destination during migration.
To prevent
IOMMU container maintains a list of all pages pinned by vfio_pin_pages API.
All pages pinned by vendor driver through this API should be considered as
dirty during migration. When container consists of IOMMU capable device and
all pages are pinned and mapped, then all pages are marked dirty.
Added
DMA mapped pages, including those pinned by mdev vendor drivers, might
get unpinned and unmapped while migration is active and device is still
running. For example, in pre-copy phase while guest driver could access
those pages, host device or vendor driver can dirty these mapped pages.
Such pages s
vfio_pfn.ref_count is always updated by holding iommu->lock, using atomic
variable is overkill.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
Reviewed-by: Eric Auger
---
drivers/vfio/vfio_iommu_type1.c | 9 +
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/drivers/vf
Flag VFIO_IOMMU_INFO_DIRTY_PGS in VFIO_IOMMU_GET_INFO indicates that driver
support dirty pages tracking.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
---
drivers/vfio/vfio_iommu_type1.c | 3 ++-
include/uapi/linux/vfio.h | 5 +++--
2 files changed, 5 insertions(+), 3 deletions(-)
- Defined MIGRATION region type and sub-type.
- Defined vfio_device_migration_info structure which will be placed at the
0th offset of migration region to get/set VFIO device related
information. Defined members of structure and usage on read/write access.
- Defined device states and state tr
Hi,
This patch set adds:
* New IOCTL VFIO_IOMMU_DIRTY_PAGES to get dirty pages bitmap with
respect to IOMMU container rather than per device. All pages pinned by
vendor driver through vfio_pin_pages external API has to be marked as
dirty during migration. When IOMMU capable device is presen
On 3/24/20 10:36 AM, Vladimir Sementsov-Ogievskiy wrote:
local_err is used several times in guest_suspend(). Setting non-NULL
local_err will crash, so let's zero it after freeing. Also fix possible
leak of local_err in final if().
Signed-off-by: Vladimir Sementsov-Ogievskiy
---
qga/commands-p
18:38 Pon, 23.03.2020. Aurelien Jarno је написао/ла:
>
> Hi,
>
> Sorry for the delay, I just want to give some more details about the
> Debian.
>
> On 2020-03-14 10:09, Philippe Mathieu-Daudé wrote:
> > IIUC today all distributions supporting MIPS ports are building their
MIPS
> > packages on QEMU
From: Peter Maydell
Coverity points out (CID 1421984) that we are leaking the
memory returned by qemu_allocate_irqs(). We can avoid this
leak by switching to using qdev_init_gpio_in(); the base
class finalize will free the irqs that this allocates under
the hood.
Signed-off-by: Peter Maydell
Re
From: Sven Schnelle
While working on the Tulip driver i tried to write some Teledisk images to
a floppy image which didn't work. Turned out that Teledisk checks the written
data by issuing a READ command to the FDC but running the DMA controller
in VERIFY mode. As we ignored the DMA request in th
The following changes since commit 736cf607e40674776d752acc201f565723e86045:
Update version for v5.0.0-rc0 release (2020-03-24 17:50:00 +)
are available in the Git repository at:
https://github.com/jnsnow/qemu.git tags/ide-pull-request
for you to fetch changes up to 51058b3b3bcbe62506cf
On 3/24/2020 2:41 AM, Auger Eric wrote:
Hi Kirti,
On 3/19/20 9:16 PM, Kirti Wankhede wrote:
IOMMU container maintains a list of all pages pinned by vfio_pin_pages API.
All pages pinned by vendor driver through this API should be considered as
dirty during migration. When container consists o
Similarly to commit 807e2b6fce0 for Windows, kindly return a
QMP error message instead of crashing the whole process.
Cc: qemu-sta...@nongnu.org
Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=1594054
Reported-by: Fakhri Zulkifli
Signed-off-by: Philippe Mathieu-Daudé
---
qga/commands-posix
* Vladimir Sementsov-Ogievskiy (vsement...@virtuozzo.com) wrote:
> local_err is used again in migration_bitmap_sync_precopy() after
> precopy_notify(), so we must zero it. Otherwise try to set
> non-NULL local_err will crash.
>
> Signed-off-by: Vladimir Sementsov-Ogievskiy
> ---
> migration/ram.
* Vladimir Sementsov-Ogievskiy (vsement...@virtuozzo.com) wrote:
> local_err is used again in secondary_vm_do_failover() after
> replication_stop_all(), so we must zero it. Otherwise try to set
> non-NULL local_err will crash.
>
> Signed-off-by: Vladimir Sementsov-Ogievskiy
Reviewed-by: Dr. Davi
On 3/24/2020 2:00 AM, Auger Eric wrote:
Hi Kirti,
On 3/19/20 9:16 PM, Kirti Wankhede wrote:
vfio_pfn.ref_count is always updated by holding iommu->lock, using atomic
variable is overkill.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
Reviewed-by: Eric Auger
Thanks.
Kirti.
Tha
On 3/24/20 1:42 PM, Eric Blake wrote:
> block_int.h claims that .bdrv_has_zero_init must return 0 if
> .bdrv_has_zero_init_truncate does likewise; but this is violated if
> only the former callback is provided if .bdrv_co_truncate also exists.
> When adding the latter callback, it was mistakenly
On 3/24/2020 2:00 AM, Auger Eric wrote:
Hi Kirti,
On 3/19/20 9:16 PM, Kirti Wankhede wrote:
- Defined MIGRATION region type and sub-type.
- Defined vfio_device_migration_info structure which will be placed at the
0th offset of migration region to get/set VFIO device related
informatio
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