On Mon, Jun 15, 2015 at 02:53:08PM +0200, Gerd Hoffmann wrote:
> virtio-input doesn't support legacy, so config spice doesn't live in IO
> address space (on virtio-pci) and size is not something we have to worry
> about. There is a full page (in mmio bar) available anyway.
>
> Don't try to size i
From: Peter Maydell
The previous code for handling payload length when converting
cmsg structures from host to target had a number of problems:
* we required the msg->msg_controllen to declare the buffer
to have enough space for final trailing padding (we were
checking against CMSG_SPACE),
From: Yongbok Kim
TARGET_ELF_PAGESTART is required to use abi_ulong to correctly handle
addresses for different target bits width.
This patch fixes a problem when running a 64-bit user mode application
on 32-bit host machines.
Signed-off-by: Yongbok Kim
Reviewed-by: Peter Maydell
Signed-off-by
iku.voipio/qemu.git tags/pull-linux-user-20150616
for you to fetch changes up to 45c874ebbae661238bfa3c0534480ebe2940b112:
linux-user: ioctl() command type is int (2015-06-16 09:37:17 +0300)
linux-user patches for 2.4 softfreeze
s
From: Alexander Graf
We store all struct types in an array of static size without ever
checking whether we overrun it. Of course some day someone (like me
in another, ancient ALSA enabling patch set) will run into the limit
without realizing it.
So let's make the allocation dynamic. We already k
From: Peter Maydell
The target payloads in cmsg conversions may not have the alignment
required by the host. Using the get_user and put_user functions is
the easiest way to handle this and also do the byte-swapping we
require.
(Note that prior to this commit target_to_host_cmsg was incorrectly
u
From: Thierry Bultel
When a thread is spawned, cpu_copy re-initializes
the bp & wp lists of current thread, instead of the ones
of the new thread.
The effect is that breakpoints are no longer hit.
Signed-off-by: Thierry Bultel
Signed-off-by: Riku Voipio
---
linux-user/main.c | 4 ++--
1 file
From: Laurent Vivier
When executing a 64bit target chroot on 64bit host,
the ioctl() command can mismatch.
It seems the previous commit doesn't solve the problem in
my case:
9c6bf9c7 linux-user: Fix ioctl cmd type mismatch on 64-bit targets
For example, a ppc64 chroot on an x86_64 host:
b
On Mon, Jun 15, 2015 at 06:14:23PM +0200, Igor Mammedov wrote:
> On Mon, 15 Jun 2015 15:34:24 +0300
> Fahri Cihan Demirci wrote:
>
> > On Mon, Jun 15, 2015 at 11:10:31AM +0200, Igor Mammedov wrote:
> > > On Thu, 11 Jun 2015 10:39:05 +0300
> > > Fahri Cihan Demirci wrote:
> > >
> > > > On Tue, J
If my understanding is correct, on a resume operation, we have the
following callback trace:
1. virtio_pci_restore function that calls all restore call back of
virtio devices
2. virtnet_restore that calls try_fill_recv function for each virtual queues
3. try_fill_recv function kicks the virtual que
The sole caller of this function navigates the cpu->env_ptr only for
this function to take it back the cpu pointer straight away. Pass in
cpu pointer instead and grab the env pointer locally in the function.
Removes a core code usage of ENV_GET_CPU().
Reviewed-by: Andreas Färber
Signed-off-by: Pe
Hi Andreas, Richard and all,
I'm moving towards the goal of having no core code usages of ENV_GET_CPU.
This has two advantages:
1: It means we are closer to common-obj'ing core code like exec.c, cpus.c
and friends.
2: Multi arch is easier if ENV_GET_CPU() stays arch specific. It means I
don't nee
The callers (most of them in target-foo/cpu.c) to this function all
have the cpu pointer handy. Just pass it to avoid an ENV_GET_CPU() from
core code (in exec.c).
Cc: Paolo Bonzini
Cc: Richard Henderson
Cc: Peter Maydell
Cc: "Edgar E. Iglesias"
Cc: "Andreas Färber"
Cc: Eduardo Habkost
Cc: Mi
All of the core-code usages of this API have the cpu pointer handy so
pass it in. There are only 3 architecture specific usages (2 of which
are commented out) which can just use ENV_GET_CPU() locally to get the
cpu pointer. The reduces core code usage of the CPU env, which brings
us closer to commo
All callsites to this function navigate the cpu->env_ptr only for the
function to take the env ptr back to the original cpu ptr. Change the
function to just pass in the CPU pointer instead. Removes a core code
usage of ENV_GET_CPU (in gdbstub.c).
Cc: Riku Voipio
Reviewed-by: Andreas Färber
Signe
Remove un-needed usages of CPU_GET_ENV() by converting the APIs to use
CPUState pointers and retrieving the env_ptr as minimally needed.
Scripted conversion for target-* change:
for I in target-*/cpu.h; do
sed -i \
's/\(^int cpu_[^_]*_exec(\)[^ ][^ ]* \*s);$/\1CPUState *cpu);/' \
$I;
The function originally behaves very badly when adding properties with "[*]"
suffix. Normally these are used for numbering IRQ pins. In order to find the
correct starting number the function started from zero and checked for
duplicates. This takes incredibly long time with large number of CPUs beca
On Mo, 2015-06-15 at 18:05 +0100, Peter Maydell wrote:
> On 15 June 2015 at 18:03, Peter Maydell wrote:
> > On 15 June 2015 at 13:27, Gerd Hoffmann wrote:
> >>
> >> audio: remove obsolete backends (esd, fmod, winwave).
> >> audio: s
iov limit was raised, but the error message still has the old limit ...
Signed-off-by: Gerd Hoffmann
---
hw/display/virtio-gpu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/hw/display/virtio-gpu.c b/hw/display/virtio-gpu.c
index 4b10ca1..8c109b7 100644
--- a/hw/display/vi
Some convinience fluff: Add support for '-vga virtio', also add
virtio-vga to the list of vga cards so '-device virtio-vga' will
turn off the default vga.
Written by Dave Airlie and Gerd Hoffmann.
Signed-off-by: Dave Airlie
Signed-off-by: Gerd Hoffmann
---
hw/isa/isa-bus.c| 3 +++
hw
This patch adds a virtio-vga device. It is simliar to virtio-gpu-pci,
but it also adds in vga compatibility, so guests without native
virtio-gpu support can drive the device in vga mode. It is compatible
with stdvga.
Written by Dave Airlie and Gerd Hoffmann.
Signed-off-by: Dave Airlie
Signed-o
Hi,
This pull request almost completes virtio-gpu support, by adding pci
support (virtio-gpu-pci) and a variant with vga compatibility
(virtio-vga). The remaining missing bit is the vgabios for virtio-vga,
which will come with the seabios update later this week.
please pull,
Gerd
The follow
This patch adds virtio-gpu-pci, which is the pci proxy for the virtio
gpu device. With this patch in place virtio-gpu is functional. You
need a linux guest with a virtio-gpu driver though, and output will
appear pretty late in boot, once the kernel initialized drm and fbcon.
Written by Dave Airl
Add seavgabios configuration for virtio-vga,
hook up the new vgabios in the makefiles.
Signed-off-by: Gerd Hoffmann
---
Makefile | 2 +-
roms/Makefile | 2 +-
roms/config.vga-virtio | 6 ++
3 files changed, 8 insertions(+), 2 deletions(-)
create mode 100644 roms/confi
On 06/16/2015 03:24 PM, Thibaut Collet wrote:
> If my understanding is correct, on a resume operation, we have the
> following callback trace:
> 1. virtio_pci_restore function that calls all restore call back of
> virtio devices
> 2. virtnet_restore that calls try_fill_recv function for each virt
On 15 June 2015 at 18:24, Peter Maydell wrote:
> Mishmash of target-arm stuff; nothing earth-shaking.
>
> -- PMM
>
>
> The following changes since commit b500e4db8e3e0b5f41a2dd14e2001200e5fc7d6b:
>
> Merge remote-tracking branch 'remotes/kraxel/tags/pull-audio-20150615-1'
> into staging (2015-0
On Mo, 2015-06-15 at 10:36 -0400, Kevin O'Connor wrote:
> On Mon, Jun 15, 2015 at 03:01:54PM +0200, Gerd Hoffmann wrote:
> > On Fr, 2015-06-12 at 16:10 -0400, Kevin O'Connor wrote:
> > > On Fri, Jun 12, 2015 at 09:00:19AM +0200, Gerd Hoffmann wrote:
> > > > Hi,
> > > >
> > > > > should be cherry
because the capabilities need to be DWORD aligned, so the size
should DWORD aligned too, and then the last capability size can
to be the greatest 0x1000. e.g. if I have a capability starting
4 bytes from the end, 0xFFC. The max size should be 4 bytes,
0x1000 - 0xFFC, not 3 bytes, 0xFFF - 0xFFC.
S
the function is used to get affected devices by bus reset.
so here extract it, and can used for aer soon.
Signed-off-by: Chen Fan
---
hw/vfio/pci.c | 66 +++
1 file changed, 48 insertions(+), 18 deletions(-)
diff --git a/hw/vfio/pci.c b/hw
On 06/10/2015 05:24 AM, Alex Williamson wrote:
On Tue, 2015-06-09 at 11:37 +0800, Chen Fan wrote:
the vfio_pci_hot_reset differentiate the single and multi in-used
devices for reset. but sometimes we own the group without any devices,
that also should support hot reset.
Nope, did you try it?
For now, for vfio pci passthough devices when qemu receives
an error from host aer report, there just terminate the guest,
but usually user want to know what error occurred but stop the
guest, so this patches add aer capability support for vfio device,
and pass the error to guest, and have guest dr
squeeze out vfio_pci_do_hot_reset to do host bus reset when AER recovery.
Signed-off-by: Chen Fan
---
hw/vfio/pci.c | 75 +++
1 file changed, 44 insertions(+), 31 deletions(-)
diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c
index 4a97ccc..e056c
Signed-off-by: Chen Fan
---
hw/vfio/common.c | 14 +-
include/hw/vfio/vfio-common.h | 1 +
2 files changed, 14 insertions(+), 1 deletion(-)
diff --git a/hw/vfio/common.c b/hw/vfio/common.c
index b1045da..67881f7 100644
--- a/hw/vfio/common.c
+++ b/hw/vfio/common.c
@@ -7
pcie_aer_init was used to emulate an aer capability for pcie device,
but for vfio device, the aer config space size is mutable and is not
always equal to PCI_ERR_SIZEOF(0x48). it depends on where the TLP Prefix
register required, so here we add a size argument.
Signed-off-by: Chen Fan
---
hw/pci
For vfio pcie device, we could expose the extended capability on
PCIE bus. in order to avoid config space broken, we introduce
a copy config for parsing extended caps. and rebuild the pcie
extended config space.
Signed-off-by: Chen Fan
---
hw/vfio/pci.c | 72 +
when do virtual secondary bus reset, the vfio device under
this bus need to do host bus reset to reset the device.
so add this case.
Signed-off-by: Chen Fan
---
hw/vfio/pci.c | 9 +
1 file changed, 9 insertions(+)
diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c
index a86edab..5bdfa73 100644
Calling pcie_aer_init to initilize aer related registers for
vfio device, then reload physical related registers to expose
device capability.
Signed-off-by: Chen Fan
---
hw/vfio/pci.c | 89 +--
1 file changed, 87 insertions(+), 2 deletions(
Signed-off-by: Chen Fan
---
hw/vfio/common.c | 9 -
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/hw/vfio/common.c b/hw/vfio/common.c
index df3171d..15f19a2 100644
--- a/hw/vfio/common.c
+++ b/hw/vfio/common.c
@@ -808,11 +808,18 @@ VFIOGroup *vfio_get_group(int groupid, Add
Signed-off-by: Chen Fan
---
hw/vfio/pci.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c
index e056c49..52e8ad4 100644
--- a/hw/vfio/pci.c
+++ b/hw/vfio/pci.c
@@ -2481,7 +2481,8 @@ static void vfio_unmap_bars(VFIOPCIDevice *vdev)
*/
static u
Add the affected groups without any devices into VM,
it can keep the VM ownship the all groups. and use a
reference to make the group visible.
Signed-off-by: Chen Fan
---
hw/vfio/pci.c | 123 ++
1 file changed, 116 insertions(+), 7 deletion
Signed-off-by: Chen Fan
---
hw/vfio/common.c | 60
1 file changed, 39 insertions(+), 21 deletions(-)
diff --git a/hw/vfio/common.c b/hw/vfio/common.c
index 67881f7..df3171d 100644
--- a/hw/vfio/common.c
+++ b/hw/vfio/common.c
@@ -631,6 +63
when the vfio device encounters an uncorrectable error in host,
the vfio_pci driver will signal the eventfd registered by this
vfio device, the results in the qemu eventfd handler getting
invoked.
this patch is to pass the error to guest and have the guest driver
recover from the error.
Signed-of
Signed-off-by: Chen Fan
---
hw/vfio/pci.c | 81 +++
1 file changed, 81 insertions(+)
diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c
index 53fb544..fad6a80 100644
--- a/hw/vfio/pci.c
+++ b/hw/vfio/pci.c
@@ -156,6 +156,7 @@ typedef struct VFIOPCI
add 'aer' property to let user able to decide whether expose
the aer capability. by default we should disable aer feature,
because it needs configuration restrictions.
Signed-off-by: Chen Fan
---
hw/vfio/pci.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c
in
the vfio_pci_hot_reset differentiate the single and multi in-used
devices for reset. but sometimes we own the group without any devices,
that also should support hot reset.
Signed-off-by: Chen Fan
---
hw/vfio/pci.c | 11 +++
1 file changed, 11 insertions(+)
diff --git a/hw/vfio/pci.c b/
when init vfio device, we should test all the devices supported
aer whether conflict with others. For each one, get the hot reset
info for the affected device list. For each affected device, if
it's attached to the VM, it needs to be on or below the bus of
the target device. also, we should test a
We use vhostforce to enable vhost even if Guests don't have MSI-X support
and we fall back to QEMU virtio-net. This patch will enable vhost
unconditionally
whenever we have vhostforce='ON' or vhost='ON'.
Initially, I wanted to remove vhostforce completely as an additional argument.
But after d
Particularly, For vfio devices, Once need to recovery devices
by bus reset such as AER, we always need to reset the host bus
to recovery the devices under the bus, so we need to add pci bus
callbacks to specify to do host bus reset.
Signed-off-by: Chen Fan
---
hw/pci/pci.c | 16 +
For vfio device, we need to propagate the aer error to
Guest OS. we use the pcie_aer_msg() to send aer error
to guest.
Signed-off-by: Chen Fan
---
hw/pci/pcie_aer.c | 2 +-
include/hw/pci/pcie_aer.h | 1 +
2 files changed, 2 insertions(+), 1 deletion(-)
diff --git a/hw/pci/pcie_aer.c b/
For a live migration my understanding is there are a suspend resume operation:
- The VM image is regularly copied from the old host to the new one
(modified pages due to VM operation can be copied several time)
- As soon as there are only few pages to copy the VM is suspended on
the old host, the l
On Tue, Jun 16, 2015 at 10=09=30AM +0300, Fahri Cihan Demirci wrote:
> On Mon, Jun 15, 2015 at 06:14:23PM +0200, Igor Mammedov wrote:
> > On Mon, 15 Jun 2015 15:34:24 +0300
> > Fahri Cihan Demirci wrote:
> >
> > > On Mon, Jun 15, 2015 at 11:10:31AM +0200, Igor Mammedov wrote:
> > > > On Thu, 11 J
On 15 June 2015 at 17:33, Eric Auger wrote:
> This patch allows the instantiation of the vfio-calxeda-xgmac device
> from the QEMU command line (-device vfio-calxeda-xgmac,host="").
>
> A specialized device tree node is created for the guest, containing
> compat, dma-coherent, reg and interrupts p
Eric Blake writes:
> On 06/12/2015 08:51 AM, Markus Armbruster wrote:
>> Screwed up in commit e53188a.
>>
>
> And partly my fault for taking a patch written in python by someone
> else, without being a python guru myself. :)
>
>> Signed-off-by: Markus Armbruster
>> ---
>> scripts/qapi.py | 26
Eric Blake writes:
> On 06/12/2015 08:51 AM, Markus Armbruster wrote:
>> The new test demonstrates another generator crash.
>
> What, I missed one?
An obscure one :)
>> Signed-off-by: Markus Armbruster
>> ---
>> tests/Makefile | 3 ++-
>> tests/qapi-schema/fla
On Wed, Jun 10, 2015 at 02:38:17PM +0300, Alexander Yarygin wrote:
> After the commit 9b536adc ("block: acquire AioContext in
> bdrv_drain_all()") the aio_poll() function got called for every
> BlockDriverState, in assumption that every device may have its own
> AioContext. If we have thousands of
Eric Blake writes:
> On 06/12/2015 08:51 AM, Markus Armbruster wrote:
>> Signed-off-by: Markus Armbruster
>> ---
>> scripts/qapi.py | 6 +++---
>> 1 file changed, 3 insertions(+), 3 deletions(-)
>>
>
> Ah, I see - you're changing it from an object member to a local variable
> (because it didn'
On 06/16/2015 10:29 AM, Peter Maydell wrote:
> On 15 June 2015 at 17:33, Eric Auger wrote:
>> This patch allows the instantiation of the vfio-calxeda-xgmac device
>> from the QEMU command line (-device vfio-calxeda-xgmac,host="").
>>
>> A specialized device tree node is created for the guest, cont
Ping...
https://lists.gnu.org/archive/html/qemu-devel/2015-05/msg02580.html
On Wed, May 13, 2015 at 04:27:30PM +0300, Alberto Garcia wrote:
> v7:
> - Rebased against the current master
> - Updated bdrv_drain_all() to use the new block_job_next() API.
>
> v6: https://lists.gnu.org/archive/html/qe
On Mon, Jun 15, 2015 at 04:21:27PM +0200, Michael S. Tsirkin wrote:
> vhost user is related to virtio, add it to the relevant entry.
>
> Signed-off-by: Michael S. Tsirkin
> ---
> MAINTAINERS | 1 +
> 1 file changed, 1 insertion(+)
Acked-by: Stefan Hajnoczi
pgpnIuLyXpyi2.pgp
Description: PGP
On 06/16/2015 03:28 AM, Greg Kurz wrote:
According to PAPR+ 3.2.2.2, the TCE is implemented as follows:
bits 0-51: real page number
bits 52-61: reserved for future use
bits 62-63: page protection (read-only, write-only, read-write)
tce_list is not a TCE, it is "The lo
Few devices have their specialized 'config_write' methods which simply
call 'pci_default_write_config' followed by a 'msix_write_config' or
'msi_write_config' calls, using exact same arguments.
This is unnecessary as 'pci_default_write_config' already invokes
'msi_write_config' and 'msix_write_con
On 16 June 2015 at 09:44, Eric Auger wrote:
> On 06/16/2015 10:29 AM, Peter Maydell wrote:
>> In virt.c the magic numbers in cells 0 and 2 have #defines
>> (GIC_FDT_IRQ_TYPE_SPI and GIC_FDT_IRQ_FLAGS_LEVEL_HI).
>>
>> (1) maybe we should pull those out into a header so you can use them here
> OK ma
Stefan Hajnoczi writes:
> On Wed, Jun 10, 2015 at 02:38:17PM +0300, Alexander Yarygin wrote:
>> After the commit 9b536adc ("block: acquire AioContext in
>> bdrv_drain_all()") the aio_poll() function got called for every
>> BlockDriverState, in assumption that every device may have its own
>> AioC
On Tue, 16 Jun 2015 18:53:51 +1000
Alexey Kardashevskiy wrote:
> On 06/16/2015 03:28 AM, Greg Kurz wrote:
> > According to PAPR+ 3.2.2.2, the TCE is implemented as follows:
> > bits 0-51: real page number
> > bits 52-61: reserved for future use
> > bits 62-63: page protection (read-o
re available in the git repository at:
>
> git://git.linaro.org/people/riku.voipio/qemu.git
> tags/pull-linux-user-20150616
>
> for you to fetch changes up to 45c874ebbae661238bfa3c0534480ebe2940b112:
>
> linux-user:
On Mon, Jun 15, 2015 at 06:41:15PM +0300, Alberto Garcia wrote:
> Calling throttle_group_config() cancels all timers from a particular
> BlockDriverState, so any_timer_armed[] should be updated accordingly.
>
> However, with the current code it may happen that a timer is armed in
> a different Blo
The tce_list variable is not a TCE but the address to a TCE: we shouldn't
clear permission bits as we do now. And this is dead code anyway since we
check tce_list is 4K aligned a few lines above.
While we're here, since we drop its last user, let's kill the sPAPRTCEAccess
enum as well.
This patch
On Tue, Jun 16, 2015 at 04:10:57PM +0800, Chen Fan wrote:
> Particularly, For vfio devices, Once need to recovery devices
> by bus reset such as AER, we always need to reset the host bus
> to recovery the devices under the bus, so we need to add pci bus
> callbacks to specify to do host bus reset.
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
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