If start a RDMA migration with postcopy enabled, the source qemu
establish a dedicated connection for return path.
Signed-off-by: Lidong Chen <lidongchen@tencent.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
RDMA WRITE operations are performed with no notification to the destination
qemu, then the destination qemu can not wakeup. This patch disable RDMA WRITE
after postcopy started.
Signed-off-by: Lidong Chen <lidongchen@tencent.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Currently, the default maximum CPU throttle for migration is
99(CPU_THROTTLE_PCT_MAX). This is too big and can make a remarkable
performance effect for the guest. We see a lot of packets latency
exceed 500ms when the CPU_THROTTLE_PCT_MAX reached. This patch set
adds a new max-cpu-throttle parameter to limit the CPU throttle.
Signed-off-by: Li Qiang <liq3ea@gmail.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Clarify that the pre_load function in a subsection is only called if
the subsection is found; to handle a missing subsection you may
set values in the pre_load of the parent vmsd.
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Currently the vmstate subsection handling code treats a subsection
with no 'needed' function pointer as if it were the subsection
list terminator, so the subsection is never transferred and nor
is any subsection following it in the list.
Handle NULL 'needed' function pointers in subsections in the same
way that we do for top level VMStateDescription structures:
treat the subsection as always being needed.
This doesn't change behaviour for the current set of devices
in the tree, because all subsections declare a 'needed' function.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
In the return for command "query-migrate", time information like
"total-time", "setup-time", "downtime", is not included in ram
json-object.
So fix the description in migration.json by unpacking those information
from ram json-object.
Signed-off-by: jialina01 <jialina01@baidu.com>
Signed-off-by: chaiwen <chaiwen@baidu.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Here's my first ppc & spapr pull request for qemu-3.1. This contains
a bunch of things that have accumulated while 3.0 was in freeze.
Highlights are:
* SLOF firmware update
* A number of floating point cleanups from Richard Henderson and
Yasmin Beatriz
* A new model for assigning irq numbers on spapr, this is an
important preliminary step towards implementing the POWER9
"XIVE" interrupt controller
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Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-3.1-20180821' into staging
ppc patch queue 2018-08-21
Here's my first ppc & spapr pull request for qemu-3.1. This contains
a bunch of things that have accumulated while 3.0 was in freeze.
Highlights are:
* SLOF firmware update
* A number of floating point cleanups from Richard Henderson and
Yasmin Beatriz
* A new model for assigning irq numbers on spapr, this is an
important preliminary step towards implementing the POWER9
"XIVE" interrupt controller
# gpg: Signature made Tue 21 Aug 2018 05:32:44 BST
# gpg: using RSA key 6C38CACA20D9B392
# gpg: Good signature from "David Gibson <david@gibson.dropbear.id.au>"
# gpg: aka "David Gibson (Red Hat) <dgibson@redhat.com>"
# gpg: aka "David Gibson (ozlabs.org) <dgibson@ozlabs.org>"
# gpg: aka "David Gibson (kernel.org) <dwg@kernel.org>"
# Primary key fingerprint: 75F4 6586 AE61 A66C C44E 87DC 6C38 CACA 20D9 B392
* remotes/dgibson/tags/ppc-for-3.1-20180821: (26 commits)
ppc: add DBCR based debugging
spapr_pci: factorize the use of SPAPR_MACHINE_GET_CLASS()
mac_newworld: don't use legacy fw_cfg_init_mem() function
mac_oldworld: don't use legacy fw_cfg_init_mem() function
40p: don't use legacy fw_cfg_init_mem() function
qemu-doc: mark ppc/prep machine as deprecated
hw/ppc: deprecate the machine type 'prep', replaced by '40p'
spapr: introduce a IRQ controller backend to the machine
hw/ppc/ppc405_uc: Convert away from old_mmio
hw/ppc/ppc_boards: Don't use old_mmio for ref405ep_fpga
hw/ppc/prep: Remove ifdeffed-out stub of XCSR code
spapr: introduce a fixed IRQ number space
spapr: Add a pseries-3.1 machine type
target/ppc: simplify bcdadd/sub functions
xics: don't include "target/ppc/cpu-qom.h" in "hw/ppc/xics.h"
vfio/spapr: Allow backing bigger guest IOMMU pages with smaller physical pages
target/ppc: bcdsub fix sign when result is zero
target/ppc: Use non-arithmetic conversions for fp load/store
target/ppc: Honor fpscr_ze semantics and tidy fre, fresqrt
target/ppc: Tidy helper_fsqrt
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This includes nvdimm persistence fixes queued before the release.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging
pc: fixes
This includes nvdimm persistence fixes queued before the release.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
# gpg: Signature made Mon 20 Aug 2018 11:38:11 BST
# gpg: using RSA key 281F0DB8D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>"
# gpg: aka "Michael S. Tsirkin <mst@redhat.com>"
# Primary key fingerprint: 0270 606B 6F3C DF3D 0B17 0970 C350 3912 AFBE 8E67
# Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA 8A0D 281F 0DB8 D28D 5469
* remotes/mst/tags/for_upstream:
migration/ram: ensure write persistence on loading all data to PMEM.
migration/ram: Add check and info message to nvdimm post copy.
mem/nvdimm: ensure write persistence to PMEM in label emulation
hostmem-file: add the 'pmem' option
configure: add libpmem support
memory, exec: switch file ram allocation functions to 'flags' parameters
memory, exec: Expose all memory block related flags.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Move away from the old_mmio MemoryRegion accessors in the
bonito pci controller.
This device is used only in the MIPS "fulong2e" machine.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20180802155147.1863-3-peter.maydell@linaro.org
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Convert the vga-isa-mm device away from the old_mmio
MemoryRegion accessors.
This device is only used by the MIPS 'jazz' boards
"magnum" and "pica61".
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Hervé Poussineau <hpoussin@reactos.org>
Tested-by: Hervé Poussineau <hpoussin@reactos.org>
Message-id: 20180802155147.1863-2-peter.maydell@linaro.org
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
According to the ramfb_setup() function, the ramfb device needs fw_cfg
with DMA, so we should also only compile and link it into those targets
which support it, to avoid that the device shows up on systems where it
can not be used at all (e.g. s390x).
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-id: 1534786083-26559-1-git-send-email-thuth@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Add support for DBCR (debug control register) based debugging as used on
BookE ppc. So far supports only branch and single-step events, but these are
the important ones. GDB in Linux guest can now do single-stepping.
Signed-off-by: Roman Kapl <rka@sysgo.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
It should save us some CPU cycles as these routines perform a lot of
checks.
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Instead initialise the device via qdev to allow us to set device properties
directly as required.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Instead initialise the device via qdev to allow us to set device properties
directly as required.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Instead initialise the device via qdev to allow us to set device properties
directly as required.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Acked-by: Hervé Poussineau <hpoussin@reactos.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
40p machine type should be used instead.
Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Acked-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
- prep machine is a fictional machine, so has no specifications. Which
devices can be changed/added/removed without impact? Are interrupts
correctly mapped?
- prep firmware (OHW) has support only for IDE drives (no SCSI).
Booting from IDE has been broken approximatively 3 years ago, and nobody complained.
- OHW is limited on IDE boot to a specific set of OS loaders.
These operating systems are of the 2004 time frame.
- OHW can use -kernel. Linux kernel freezes a long time after PS/2 mouse
detection, and then screen becomes garbage. This was already broken in
QEMU v2.7, 2 years ago, and nobody complained.
On the other side:
- 40p is a real machine, so emulation can be checked against
hardware specifications
- OpenBIOS has support for SCSI block devices, including 40p LSI adapter
- OpenBIOS can start mostly all Linux kernels (including recent ones)
and recent operating system (like NetBSD 7.1.2)
Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
[dwg: Drop prep from boot-serial test to avoid deprecation warnings]
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This proposal moves all the related IRQ routines of the sPAPR machine
behind a sPAPR IRQ backend interface 'spapr_irq' to prepare for future
changes. First of which will be to increase the size of the IRQ number
space, then, will follow a new backend for the POWER9 XIVE IRQ controller.
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Greg Kurz <groug@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Convert the devices in ppc405_uc away from using the old_mmio
MemoryRegion accessors:
* opba's 32-bit and 16-bit accessors were just calling the
8-bit accessors and assembling a big-endian order number,
which we can do by setting the .impl.max_access_size to 1
and the endianness to DEVICE_BIG_ENDIAN, and letting the
core memory code do the assembly
* ppc405_gpio's accessors were all just stubs
* ppc4xx_gpt's 8-bit and 16-bit accessors were treating the
access as invalid, which we can do by setting the
.valid.min_access_size and .valid.max_access_size fields
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Switch the ref405ep_fpga device away from using the old_mmio
MemoryRegion accessors.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
The prep machine has some code which is stubs of accessors
for XCSR registers. This has been disabled via #if 0
since commit b6b8bd1819 in 2004, and doesn't have any
actual interesting content. It also uses the deprecated
old_mmio accessor functions. Remove it entirely.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Hervé Poussineau <hpoussin@reactos.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This proposal introduces a new IRQ number space layout using static
numbers for all devices, depending on a device index, and a bitmap
allocator for the MSI IRQ numbers which are negotiated by the guest at
runtime.
As the VIO device model does not have a device index but a "reg"
property, we introduce a formula to compute an IRQ number from a "reg"
value. It should minimize most of the collisions.
The previous layout is kept in pre-3.1 machines raising the
'legacy_irq_allocation' machine class flag.
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Greg Kurz <groug@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
After solving a corner case in bcdsub, this patch simplifies the logic
of both bcdadd/sub instructions by removing some unnecessary local flags.
This commit also rearranges some if-else conditions in bcdadd to make it
easier to read.
Signed-off-by: Yasmin Beatriz <yasmins@linux.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
The last user of the PowerPCCPU typedef in "hw/ppc/xics.h" vanished with
commit b1fd36c363. It isn't necessary to
include "target/ppc/cpu-qom.h" there anymore.
Signed-off-by: Greg Kurz <groug@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
At the moment the PPC64/pseries guest only supports 4K/64K/16M IOMMU
pages and POWER8 CPU supports the exact same set of page size so
so far things worked fine.
However POWER9 supports different set of sizes - 4K/64K/2M/1G and
the last two - 2M and 1G - are not even allowed in the paravirt interface
(RTAS DDW) so we always end up using 64K IOMMU pages, although we could
back guest's 16MB IOMMU pages with 2MB pages on the host.
This stores the supported host IOMMU page sizes in VFIOContainer and uses
this later when creating a new DMA window. This uses the system page size
(64k normally, 2M/16M/1G if hugepages used) as the upper limit of
the IOMMU pagesize.
This changes the type of @pagesize to uint64_t as this is what
memory_region_iommu_get_min_page_size() returns and clz64() takes.
There should be no behavioral changes on platforms other than pseries.
The guest will keep using the IOMMU page size selected by the PHB pagesize
property as this only changes the underlying hardware TCE table
granularity.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
When the result of bcdsub is equal to zero, the result sign may be
set to negative in some cases, and this does not follow the Power ISA
specifications as to decimal integer arithmetic instructions.
Signed-off-by: Yasmin Beatriz <yasmins@linux.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Memory operations have no side effects on fp state.
The use of a "real" conversions between float64 and float32
would raise exceptions for SNaN and out-of-range inputs.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Divide by zero, exception taken, leaves the destination register
unmodified. Therefore we must raise the exception before returning
from the respective helpers.
>From helper_fre, divide by zero exception not taken, return the
documented +/- 0.5.
At the same time, tidy the invalid exception checking so that we
rely on softfloat for initial argument validation, and select the
kind of invalid operand exception only when we know we must.
At the same time, pass and return float64 values directly rather
than bounce through the CPU_DoubleU union.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Tidy the invalid exception checking so that we rely on softfloat for
initial argument validation, and select the kind of invalid operand
exception only when we know we must. Pass and return float64 values
directly rather than bounce through the CPU_DoubleU union.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Tidy the invalid exception checking so that we rely on softfloat for
initial argument validation, and select the kind of invalid operand
exception only when we know we must. Pass and return float64 values
directly rather than bounce through the CPU_DoubleU union.
Note that because we know float_flag_invalid was set, we do not have
to re-check the signs of the infinities.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Tidy the invalid exception checking so that we rely on softfloat for
initial argument validation, and select the kind of invalid operand
exception only when we know we must. Pass and return float64 values
directly rather than bounce through the CPU_DoubleU union.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Divide by zero, exception taken, leaves the destination register
unmodified. Therefore we must raise the exception before returning
from helper_fdiv. Move the check from do_float_check_status into
helper_fdiv.
At the same time, tidy the invalid exception checking so that we
rely on softfloat for initial argument validation, and select the
kind of invalid operand exception only when we know we must.
At the same time, pass and return float64 values directly rather
than bounce through the CPU_DoubleU union.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
While just setting the MSR bits is sufficient, we can tidy
the helper code by extracting the MSR test to a helper and
then forcing it true for user-only.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This includes gcc8.1 fixes and the image is compiled using gcc 8.1 as well.
The full list of changes is:
> Fix bad assembler statements for compiling with gcc 8.1 / as 2.30
> libelf: Add REL32 to the list of ignored relocations
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
VMStateDescription vmstate_spapr_cpu_state was added by commit
b94020268e (spapr_cpu_core: migrate per-CPU data) to migrate per-CPU
data with the required vmstate registration and unregistration calls.
However the unregistration is being done only from vcpu creation error path
and not from CPU delete path.
This causes migration to fail with the following error if migration is
attempted after a CPU unplug like this:
Unknown savevm section or instance 'spapr_cpu' 16
Additionally this leaves the source VM unresponsive after migration failure.
Fix this by ensuring the vmstate_unregister happens during CPU removal.
Fixing this becomes easier when vmstate (un)registration calls are moved to
vcpu (un)realize functions which is what this patch does.
Fixes: https://bugs.launchpad.net/qemu/+bug/1785972
Reported-by: Satheesh Rajendran <sathnaga@linux.vnet.ibm.com>
Signed-off-by: Bharata B Rao <bharata@linux.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Following commit will introduce RTA_PREF that appears only with
kernel v4.1. To avoid to manage a specific case for it, this patch
introduces the full list of rtattr_type_t prefixed with QEMU_ (as we
did for IFLA values)
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20180820171557.7734-3-laurent@vivier.eu>
[lv: added more RTA_* from linux v4.18]
If recvmsg()/recvfrom() are used with the MSG_TRUNC flag, they return the
real length even if it was longer than the passed buffer.
So when we translate the buffer we must check we don't go beyond the
end of the buffer.
Bug: https://github.com/vivier/qemu-m68k/issues/33
Reported-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20180820171557.7734-2-laurent@vivier.eu>
Instead initialise the device via qdev to allow us to set device properties
directly as required.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Valgrind reports that when loading a non-ELF kernel, kernel_top may be used
uninitialised when checking for an initrd.
Since there are no known non-ELF kernels for SPARC64 then we can simply
initialise kernel_top to 0 and then skip the initrd load process if it hasn't
been set by load_elf().
Reported-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
When we do a build inside one of the BSD VMs, first
delete any stale old build directories from the VM's
/var/tmp. This prevents the VM from running out of
disk space after it has been used for a dozen or
so builds.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Fam Zheng <famz@redhat.com>
Message-id: 20180820124811.7982-1-peter.maydell@linaro.org
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-----END PGP SIGNATURE-----
Merge remote-tracking branch 'remotes/marcel/tags/rdma-pull-request' into staging
RDMA queue
# gpg: Signature made Sat 18 Aug 2018 16:01:46 BST
# gpg: using RSA key 36D4C0F0CF2FE46D
# gpg: Good signature from "Marcel Apfelbaum <marcel.apfelbaum@zoho.com>"
# gpg: aka "Marcel Apfelbaum <marcel@redhat.com>"
# gpg: aka "Marcel Apfelbaum <marcel.apfelbaum@gmail.com>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: B1C6 3A57 F92E 08F2 640F 31F5 36D4 C0F0 CF2F E46D
* remotes/marcel/tags/rdma-pull-request:
config: split PVRDMA from RDMA
hw/pvrdma: remove not needed include
hw/rdma: Add reference to pci_dev in backend_dev
hw/rdma: Bugfix - Support non-aligned buffers
hw/rdma: Print backend QP number in hex format
hw/rdma: Cosmetic change - move to generic function
hw/pvrdma: Cosmetic change - indent right
hw/rdma: Reorder resource cleanup
hw/rdma: Do not allocate memory for non-dma MR
hw/rdma: Delete useless structure RdmaRmUserMR
hw/pvrdma: Make default pkey 0xFFFF
hw/pvrdma: Clean CQE before use
hw/rdma: Modify debug macros
hw/pvrdma: Bugfix - provide the correct attr_mask to query_qp
hw/rdma: Make distinction between device init and start modes
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Lidong Chen