We're seeing occasional asserts in 'wait_for_migraiton_fail', that
I can't reliably reproduce, and where the cores don't have any useful
state.  Print the 'status' out, so we can see which unexpected state
we're ending up in.
Signed-off-by: NDr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <20191108104307.125020-1-dgilbert@redhat.com>
Reviewed-by: NThomas Huth <thuth@redhat.com>
Reviewed-by: NPhilippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: NThomas Huth <thuth@redhat.com>

I haven't been doing anything here for a long time, nor does my git repo
still play a role.
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>
Message-Id: <759f8f44-9a01-a9f1-c7cf-65d40151a93a@web.de>
Reviewed-by: NMarc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: NSamuel Thibault <samuel.thibault@gnu.org>
Signed-off-by: NThomas Huth <thuth@redhat.com>

Spotted by ASAN.
Signed-off-by: NMarc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20191107192731.17330-4-marcandre.lureau@redhat.com>
Reviewed-by: NThomas Huth <thuth@redhat.com>
Fixes: 021a007e ("cpu-plug-test: fix device_add for pc/q35 machines")
Signed-off-by: NThomas Huth <thuth@redhat.com>

Spotted by ASAN.
Signed-off-by: NMarc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20191107192731.17330-3-marcandre.lureau@redhat.com>
Reviewed-by: NThomas Huth <thuth@redhat.com>
Fixes: b4510bb4 ("tests: add qtest_qmp_device_add_qdict() helper")
Signed-off-by: NThomas Huth <thuth@redhat.com>

Fix dp8393x when used in big-endian/double-word mode
(fix DHCP address allocation for q800 machine)

# gpg: Signature made Fri 08 Nov 2019 20:38:21 GMT
# gpg:                using RSA key CD2F75DDC8E3A4DC2E4F5173F30C38BD3F2FBE3C
# gpg:                issuer "laurent@vivier.eu"
# gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" [full]
# gpg:                 aka "Laurent Vivier <laurent@vivier.eu>" [full]
# gpg:                 aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" [full]
# Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F  5173 F30C 38BD 3F2F BE3C

* remotes/vivier/tags/q800-branch-pull-request:
  dp8393x: fix dp8393x_receive()
  dp8393x: put the DMA buffer in the state structure
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

RXpkt.in_use is always 16 bit wide, but when the bus access mode is 32bit
and the endianness is big, we must access the second word and not the
first. This patch adjusts the offset according to the size and endianness.

This fixes DHCP for Q800 guest.

Fixes: be920841 ("dp8393x: manage big endian bus")
Signed-off-by: NLaurent Vivier <laurent@vivier.eu>
Tested-by: NHervé Poussineau <hpoussin@reactos.org>
Message-Id: <20191106112341.23735-3-laurent@vivier.eu>

Move it from the stack.

It's only 24 bytes, and this simplifies the dp8393x_get()/
dp8393x_put() interface.
Signed-off-by: NLaurent Vivier <laurent@vivier.eu>
Reviewed-by: NHervé Poussineau <hpoussin@reactos.org>
Message-Id: <20191106112341.23735-2-laurent@vivier.eu>

usb: fix for usb-host

# gpg: Signature made Thu 07 Nov 2019 08:55:12 GMT
# gpg:                using RSA key 4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>" [full]
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>" [full]
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>" [full]
# Primary key fingerprint: A032 8CFF B93A 17A7 9901  FE7D 4CB6 D8EE D3E8 7138

* remotes/kraxel/tags/usb-20191107-pull-request:
  usb-host: add option to allow all resets.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

Block patches for 4.2.0-rc0/4.1.1:
- Fix writing to compressed qcow2 images > 4 GB
- Fix size sanity check for qcow2 bitmaps

# gpg: Signature made Thu 07 Nov 2019 14:30:56 GMT
# gpg:                using RSA key 91BEB60A30DB3E8857D11829F407DB0061D5CF40
# gpg:                issuer "mreitz@redhat.com"
# gpg: Good signature from "Max Reitz <mreitz@redhat.com>" [full]
# Primary key fingerprint: 91BE B60A 30DB 3E88 57D1  1829 F407 DB00 61D5 CF40

* remotes/maxreitz/tags/pull-block-2019-11-07:
  iotests: Add test for 4G+ compressed qcow2 write
  qcow2: Fix QCOW2_COMPRESSED_SECTOR_MASK
  qcow2-bitmap: Fix uint64_t left-shift overflow
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

Trivial fixes (20191105-v3)

v3: remove disas/libvixl/vixl/invalset.h changes
v2: remove patch from Greg that has lines with more than 80 columns

# gpg: Signature made Wed 06 Nov 2019 16:23:45 GMT
# gpg:                using RSA key CD2F75DDC8E3A4DC2E4F5173F30C38BD3F2FBE3C
# gpg:                issuer "laurent@vivier.eu"
# gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" [full]
# gpg:                 aka "Laurent Vivier <laurent@vivier.eu>" [full]
# gpg:                 aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" [full]
# Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F  5173 F30C 38BD 3F2F BE3C

* remotes/vivier2/tags/trivial-branch-pull-request:
  global: Squash 'the the'
  hw/misc/grlib_ahb_apb_pnp: Fix 8-bit accesses
  hw/misc/grlib_ahb_apb_pnp: Avoid crash when writing to PnP registers
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

RDMA queue

* better memory registration performance

# gpg: Signature made Wed 06 Nov 2019 14:37:47 GMT
# gpg:                using RSA key 36D4C0F0CF2FE46D
# gpg: Good signature from "Marcel Apfelbaum <marcel.apfelbaum@zoho.com>" [marginal]
# gpg:                 aka "Marcel Apfelbaum <marcel@redhat.com>" [marginal]
# gpg:                 aka "Marcel Apfelbaum <marcel.apfelbaum@gmail.com>" [marginal]
# 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:
  hw/rdma: Utilize ibv_reg_mr_iova for memory registration
  configure: Check if we can use ibv_reg_mr_iova
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

Test what qemu-img check says about an image after one has written
compressed data to an offset above 4 GB.
Signed-off-by: NMax Reitz <mreitz@redhat.com>
Message-id: 20191028161841.1198-3-mreitz@redhat.com
Reviewed-by: NAlberto Garcia <berto@igalia.com>
Signed-off-by: NMax Reitz <mreitz@redhat.com>

Masks for L2 table entries should have 64 bit.

Fixes: b6c24694
Buglink: https://bugs.launchpad.net/qemu/+bug/1850000
Cc: qemu-stable@nongnu.org
Signed-off-by: NMax Reitz <mreitz@redhat.com>
Message-id: 20191028161841.1198-2-mreitz@redhat.com
Reviewed-by: NAlberto Garcia <berto@igalia.com>
Signed-off-by: NMax Reitz <mreitz@redhat.com>

There are two issues in In check_constraints_on_bitmap(),
1) The sanity check on the granularity will cause uint64_t
integer left-shift overflow when cluster_size is 2M and the
granularity is BIGGER than 32K.
2) The way to calculate image size that the maximum bitmap
supported can map to is a bit incorrect.
This patch fix it by add a helper function to calculate the
number of bytes needed by a normal bitmap in image and compare
it to the maximum bitmap bytes supported by qemu.

Fixes: 5f72826eSigned-off-by: NGuoyi Tu <tu.guoyi@h3c.com>
Message-id: 4ba40cd1e7ee4a708b40899952e49f22@h3c.com
Reviewed-by: NVladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Cc: qemu-stable@nongnu.org
Signed-off-by: NMax Reitz <mreitz@redhat.com>

virtio, pci: fixes

A couple of bugfixes.
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>

# gpg: Signature made Wed 06 Nov 2019 12:00:19 GMT
# gpg:                using RSA key 281F0DB8D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" [full]
# gpg:                 aka "Michael S. Tsirkin <mst@redhat.com>" [full]
# 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:
  virtio: notify virtqueue via host notifier when available
  hw/i386: AMD-Vi IVRS DMA alias support
  pci: Use PCI aliases when determining device IOMMU address space
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

audio: documentation update

# gpg: Signature made Wed 06 Nov 2019 08:24:44 GMT
# gpg:                using RSA key 4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>" [full]
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>" [full]
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>" [full]
# Primary key fingerprint: A032 8CFF B93A 17A7 9901  FE7D 4CB6 D8EE D3E8 7138

* remotes/kraxel/tags/audio-20191106-pull-request:
  audio: add -audiodev pa,in|out.latency= to documentation
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

ui: rework -display help text

# gpg: Signature made Wed 06 Nov 2019 07:06:52 GMT
# gpg:                using RSA key 4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>" [full]
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>" [full]
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>" [full]
# Primary key fingerprint: A032 8CFF B93A 17A7 9901  FE7D 4CB6 D8EE D3E8 7138

* remotes/kraxel/tags/ui-20191106-pull-request:
  qemu-options: Rework the help text of the '-display' option
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

sparc/sparc64 fixes: this doesn't fix debian chroot for me
but they are a step in the good direction.
Fix Netlink support.
Trivial fix for alpha

PULL v2: fix checkpatch warnings

# gpg: Signature made Wed 06 Nov 2019 13:04:36 GMT
# gpg:                using RSA key CD2F75DDC8E3A4DC2E4F5173F30C38BD3F2FBE3C
# gpg:                issuer "laurent@vivier.eu"
# gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" [full]
# gpg:                 aka "Laurent Vivier <laurent@vivier.eu>" [full]
# gpg:                 aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" [full]
# Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F  5173 F30C 38BD 3F2F BE3C

* remotes/vivier2/tags/linux-user-for-4.2-pull-request:
  linux-user/alpha: Set r20 secondary return value
  linux-user/sparc: Fix cpu_clone_regs_*
  linux-user: Introduce cpu_clone_regs_parent
  linux-user: Rename cpu_clone_regs to cpu_clone_regs_child
  linux-user/sparc64: Fix target_signal_frame
  linux-user/sparc: Fix WREG usage in setup_frame
  linux-user/sparc: Use WREG_SP constant in sparc/signal.c
  linux-user/sparc: Begin using WREG constants in sparc/signal.c
  linux-user/sparc: Use WREG constants in sparc/target_cpu.h
  target/sparc: Define an enumeration for accessing env->regwptr
  tests/tcg/multiarch/linux-test: Fix error check for shmat
  scripts/qemu-binfmt-conf: Update for sparc64
  linux-user: Support for NETLINK socket options
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

The i440FX northbridge is only used by the PC machine, while the
PIIX southbridge is also used by the Malta MIPS machine.

Split the PIIX3 southbridge from i440FX northbridge.

# gpg: Signature made Tue 05 Nov 2019 22:48:12 GMT
# gpg:                using RSA key 89C1E78F601EE86C867495CBA2A3FD6EDEADC0DE
# gpg: Good signature from "Philippe Mathieu-Daudé (Phil) <philmd@redhat.com>" [marginal]
# 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: 89C1 E78F 601E E86C 8674  95CB A2A3 FD6E DEAD C0DE

* remotes/philmd-gitlab/tags/mips-next-20191105: (21 commits)
  hw/pci-host/i440fx: Remove the last PIIX3 traces
  hw/pci-host: Rename incorrectly named 'piix' as 'i440fx'
  hw/pci-host/piix: Extract PIIX3 functions to hw/isa/piix3.c
  hw/pci-host/piix: Fix code style issues
  hw/pci-host/piix: Move i440FX declarations to hw/pci-host/i440fx.h
  hw/pci-host/piix: Define and use the PIIX IRQ Route Control Registers
  hw/pci-host/piix: Move RCR_IOPORT register definition
  hw/pci-host/piix: Extract piix3_create()
  hw/i386: Remove obsolete LoadStateHandler::load_state_old handlers
  hw/isa/piix4: Move piix4_create() to hw/isa/piix4.c
  hw/mips/mips_malta: Extract the PIIX4 creation code as piix4_create()
  hw/mips/mips_malta: Create IDE hard drive array dynamically
  piix4: Add a MC146818 RTC Controller as specified in datasheet
  piix4: Add an i8254 PIT Controller as specified in datasheet
  piix4: Add an i8257 DMA Controller as specified in datasheet
  piix4: Rename PIIX4 object to piix4-isa
  Revert "irq: introduce qemu_irq_proxy()"
  piix4: Add an i8259 Interrupt Controller as specified in datasheet
  piix4: Add the Reset Control Register
  MAINTAINERS: Keep PIIX4 South Bridge separate from PC Chipsets
  ...
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

'the' has a tendency to double up; squash them back down.
Signed-off-by: NDr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: NAlex Bennée <alex.bennee@linaro.org>
Reviewed-by: NLaurent Vivier <laurent@vivier.eu>
Reviewed-by: NPhilippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20191104185202.102504-1-dgilbert@redhat.com>
[lv: removed disas/libvixl/vixl/invalset.h change]
Signed-off-by: NLaurent Vivier <laurent@vivier.eu>

Fix q800 memory map

# gpg: Signature made Tue 05 Nov 2019 18:05:46 GMT
# gpg:                using RSA key CD2F75DDC8E3A4DC2E4F5173F30C38BD3F2FBE3C
# gpg:                issuer "laurent@vivier.eu"
# gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" [full]
# gpg:                 aka "Laurent Vivier <laurent@vivier.eu>" [full]
# gpg:                 aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" [full]
# Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F  5173 F30C 38BD 3F2F BE3C

* remotes/vivier/tags/q800-branch-pull-request:
  q800: fix I/O memory map
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

Pull request

Let's get the image fuzzer Python 3 changes merged in QEMU 4.2.

# gpg: Signature made Tue 05 Nov 2019 15:43:16 GMT
# gpg:                using RSA key 8695A8BFD3F97CDAAC35775A9CA4ABB381AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>" [full]
# gpg:                 aka "Stefan Hajnoczi <stefanha@gmail.com>" [full]
# Primary key fingerprint: 8695 A8BF D3F9 7CDA AC35  775A 9CA4 ABB3 81AB 73C8

* remotes/stefanha/tags/block-pull-request:
  image-fuzzer: Use OSerror.strerror instead of tuple subscript
  image-fuzzer: Use errors parameter of subprocess.Popen()
  image-fuzzer: Run using python3
  image-fuzzer: Encode file name and file format to bytes
  image-fuzzer: Use bytes constant for field values
  image-fuzzer: Return bytes objects on string fuzzing functions
  image-fuzzer: Use %r for all fiels at Field.__repr__()
  image-fuzzer: Use io.StringIO
  image-fuzzer: Explicitly use integer division operator
  image-fuzzer: Write bytes instead of string to image file
  image-fuzzer: Open image files in binary mode
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

This value is not, as far as I know, used by any linux software,
but it is set by the kernel and is part of the ABI.
Signed-off-by: NRichard Henderson <richard.henderson@linaro.org>
Reviewed-by: NLaurent Vivier <laurent@vivier.eu>
Message-Id: <20191106113318.10226-13-richard.henderson@linaro.org>
Signed-off-by: NLaurent Vivier <laurent@vivier.eu>

We failed to set the secondary return value in %o1
we failed to advance the PC past the syscall,
we failed to adjust regwptr into the new structure,
we stored the stack pointer into the wrong register.
Signed-off-by: NRichard Henderson <richard.henderson@linaro.org>
Message-Id: <20191106113318.10226-12-richard.henderson@linaro.org>
Signed-off-by: NLaurent Vivier <laurent@vivier.eu>

We will need a target-specific hook for adjusting registers
in the parent during clone.  Add an empty inline function for
each target, and invoke it from the proper places.
Reviewed-by: NLaurent Vivier <laurent@vivier.eu>
Signed-off-by: NRichard Henderson <richard.henderson@linaro.org>
Reviewed-by: NPhilippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20191106113318.10226-11-richard.henderson@linaro.org>
Signed-off-by: NLaurent Vivier <laurent@vivier.eu>

We will need a target-specific hook for adjusting registers
in the parent during clone.  To avoid confusion, rename the
one we have to make it clear it affects the child.

At the same time, pass in the flags from the clone syscall.
We will need them for correct behaviour for Sparc.
Reviewed-by: NLaurent Vivier <laurent@vivier.eu>
Signed-off-by: NRichard Henderson <richard.henderson@linaro.org>
Reviewed-by: NPhilippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20191106113318.10226-10-richard.henderson@linaro.org>
Signed-off-by: NLaurent Vivier <laurent@vivier.eu>

Instructions are always 4 bytes; use uint32_t not abi_ulong.
Signed-off-by: NRichard Henderson <richard.henderson@linaro.org>
Reviewed-by: NLaurent Vivier <laurent@vivier.eu>
Message-Id: <20191106113318.10226-9-richard.henderson@linaro.org>
Signed-off-by: NLaurent Vivier <laurent@vivier.eu>

Use WREG_I0 not WREG_O0 in order to properly save the "ins".
The "outs" were saved separately in setup___siginfo.
Signed-off-by: NRichard Henderson <richard.henderson@linaro.org>
Message-Id: <20191106113318.10226-8-richard.henderson@linaro.org>
Signed-off-by: NLaurent Vivier <laurent@vivier.eu>

s/UREG_FP/WREG_SP/g

This is non-obvious because the UREG_FP constant is fact wrong.
However, the previous search-and-replace patch made it clear that
UREG_FP expands to WREG_O6, and we can see from the enumeration in
target/sparc/cpu.h that WREG_O6 is in fact WREG_SP, the stack pointer.

The UREG_SP define is unused; remove it.
Signed-off-by: NRichard Henderson <richard.henderson@linaro.org>
Reviewed-by: NLaurent Vivier <laurent@vivier.eu>
Message-Id: <20191106113318.10226-7-richard.henderson@linaro.org>
Signed-off-by: NLaurent Vivier <laurent@vivier.eu>

This is non-obvious because the UREG constants are in fact wrong.

s/UREG_I/WREG_O/g
s/UREG_O/WREG_I/g
s/UREG_L/WREG_L/g

These substitutions have identical integer values.
Signed-off-by: NRichard Henderson <richard.henderson@linaro.org>
Reviewed-by: NLaurent Vivier <laurent@vivier.eu>
Message-Id: <20191106113318.10226-6-richard.henderson@linaro.org>
Signed-off-by: NLaurent Vivier <laurent@vivier.eu>

This fixes a naming bug wherein we used "UREG_FP" to access the
stack pointer.  OTOH, the "UREG_FP" constant was also defined
incorrectly such that it *did* reference the stack pointer.

Note that the kernel legitimately uses the name "FP", because it
utilizes the rolled stack window in processing the system call.
Signed-off-by: NRichard Henderson <richard.henderson@linaro.org>
Reviewed-by: NLaurent Vivier <laurent@vivier.eu>
Message-Id: <20191106113318.10226-5-richard.henderson@linaro.org>
Signed-off-by: NLaurent Vivier <laurent@vivier.eu>

Signed-off-by: NRichard Henderson <richard.henderson@linaro.org>
Message-Id: <20191106113318.10226-4-richard.henderson@linaro.org>
Signed-off-by: NLaurent Vivier <laurent@vivier.eu>

The error indicator for this syscall is -1, not 0.

Fixes: e374bfa3 ("shm tests - disabled clone test")
Reviewed-by: NLaurent Vivier <laurent@vivier.eu>
Signed-off-by: NRichard Henderson <richard.henderson@linaro.org>
Reviewed-by: NPhilippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20191106113318.10226-3-richard.henderson@linaro.org>
Signed-off-by: NLaurent Vivier <laurent@vivier.eu>

Also note that we were missing the qemu_target_list entry
for plain sparc; fix that at the same time.
Reviewed-by: NLaurent Vivier <laurent@vivier.eu>
Tested-by: NLaurent Vivier <laurent@vivier.eu>
Signed-off-by: NRichard Henderson <richard.henderson@linaro.org>
Message-Id: <20191106113318.10226-2-richard.henderson@linaro.org>
Signed-off-by: NLaurent Vivier <laurent@vivier.eu>

Commit 65f14ab9 ("usb-host: skip reset for untouched devices")
filters out multiple usb device resets in a row.  While this improves
the situation for usb some devices it doesn't work for others :-(

So go add a config option to make the behavior configurable.

Buglink: https://bugs.launchpad.net/bugs/1846451Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>
Message-id: 20191015064426.19454-1-kraxel@redhat.com

qemu-ga patch queue for hard-freeze

* fix handling of Chinese network device names in
  guest-network-get-interfaces
* add missing blacklist entries for guest-get-memory-block-info for
  w32/non-linux builds

# gpg: Signature made Mon 04 Nov 2019 17:25:54 GMT
# gpg:                using RSA key CEACC9E15534EBABB82D3FA03353C9CEF108B584
# gpg:                issuer "mdroth@linux.vnet.ibm.com"
# gpg: Good signature from "Michael Roth <flukshun@gmail.com>" [full]
# gpg:                 aka "Michael Roth <mdroth@utexas.edu>" [full]
# gpg:                 aka "Michael Roth <mdroth@linux.vnet.ibm.com>" [full]
# Primary key fingerprint: CEAC C9E1 5534 EBAB B82D  3FA0 3353 C9CE F108 B584

* remotes/mdroth/tags/qga-pull-2019-11-04-tag:
  qga: Add "guest-get-memory-block-info" to blacklist
  qga-win: network-get-interfaces command name field bug fix
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

Host notifiers are used in several cases:
1. Traditional ioeventfd where virtqueue notifications are handled in
   the main loop thread.
2. IOThreads (aio_handle_output) where virtqueue notifications are
   handled in an IOThread AioContext.
3. vhost where virtqueue notifications are handled by kernel vhost or
   a vhost-user device backend.

Most virtqueue notifications from the guest use the ioeventfd mechanism,
but there are corner cases where QEMU code calls virtio_queue_notify().
This currently honors the host notifier for the IOThreads
aio_handle_output case, but not for the vhost case.  The result is that
vhost does not receive virtqueue notifications from QEMU when
virtio_queue_notify() is called.

This patch extends virtio_queue_notify() to set the host notifier
whenever it is enabled instead of calling the vq->(aio_)handle_output()
function directly.  We track the host notifier state for each virtqueue
separately since some devices may use it only for certain virtqueues.

This fixes the vhost case although it does add a trip through the
eventfd for the traditional ioeventfd case.  I don't think it's worth
adding a fast path for the traditional ioeventfd case because calling
virtio_queue_notify() is rare when ioeventfd is enabled.
Reported-by: NFelipe Franciosi <felipe@nutanix.com>
Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20191105140946.165584-1-stefanha@redhat.com>
Reviewed-by: NMichael S. Tsirkin <mst@redhat.com>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>

The virtual address that is provided by the guest in post_send and
post_recv operations is related to the guest address space. This address
space is unknown to the HCA resides on host so extra step in these
operations is needed to adjust the address to host virtual address.

This step, which is done in data-path affects performances.

An enhanced verion of MR registration introduced here
https://patchwork.kernel.org/patch/11044467/ can be used so that the
guest virtual address space for this MR is known to the HCA in host.

This will save the data-path adjustment.
Signed-off-by: NYuval Shaia <yuval.shaia@oracle.com>
Reviewed-by: NMarcel Apfelbaum <marcel.apfelbaum@gmail.com>
Message-Id: <20190818132107.18181-3-yuval.shaia@oracle.com>
Signed-off-by: NMarcel Apfelbaum <marcel.apfelbaum@gmail.com>

The function reg_mr_iova is an enhanced version of ibv_reg_mr function
that can help to easly register and use guest's MRs.

Add check in 'configure' phase to detect if we have libibverbs with this
support.
Signed-off-by: NYuval Shaia <yuval.shaia@oracle.com>
Reviewed-by: NMarcel Apfelbaum <marcel.apfelbaum@gmail.com>
Message-Id: <20190818132107.18181-2-yuval.shaia@oracle.com>
Signed-off-by: NMarcel Apfelbaum <marcel.apfelbaum@gmail.com>