Add more useful error information to failure paths in vpc_open
Signed-off-by: NJeff Cody <jcody@redhat.com>
Reviewed-by: NStefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

The check on the max_table_size field not being larger than required is
valid, and in accordance with the VHD spec.  However, there have been
VHD images encountered in the wild that have an out-of-spec max table
size that is technically too large.

There is no issue in allowing this larger table size, as we also
later verify that the computed size (used for the pagetable) is
large enough to fit all sectors.  In addition, max_table_entries
is bounds checked against SIZE_MAX and INT_MAX.

Remove the strict check, so that we can accomodate these sorts of
images that are benignly out of spec.
Reported-by: NStefan Hajnoczi <stefanha@redhat.com>
Reported-by: NGrant Wu <grantwwu@gmail.com>
Signed-off-by: NJeff Cody <jcody@redhat.com>
Reviewed-by: NStefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

The old VHD_MAX_SECTORS value is incorrect, and is a throwback
to the CHS calculations.  The VHD specification allows images up to 2040
GiB, which (using 512 byte sectors) corresponds to a maximum number of
sectors of 0xff000000, rather than the old value of 0xfe0001ff.

Update VHD_MAX_SECTORS to reflect the correct value.

Also, update comment references to the actual size limit, and correct
one compare so that we can have sizes up to the limit.
Signed-off-by: NJeff Cody <jcody@redhat.com>
Reviewed-by: NStefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

XenConverter VHD images are another VHD image where current_size is
different from the CHS values in the the format header.  Use
current_size as the default, by looking at the creator_app signature
field.
Signed-off-by: NJeff Cody <jcody@redhat.com>
Reviewed-by: NStefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

The vpc driver has two methods of determining virtual disk size.  The
correct one to use depends on the software that generated the image
file.  Add the XenServer creator_app signature so that image size is
correctly detected for those images.
Reported-by: NGrant Wu <grantwwu@gmail.com>
Reported-by: NSpencer Baugh <sbaugh@catern.com>
Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: NJeff Cody <jcody@redhat.com>
Reviewed-by: NStefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

Add more useful error information to failure paths in vpc_create().
Signed-off-by: NJeff Cody <jcody@redhat.com>
Reviewed-by: NStefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

Commit 57d6a428 broke blk_aio_write_zeroes() because in some write
functions in the call path don't have an explicit length argument but
reuse qiov->size instead. Which is great, except that write_zeroes
doesn't have a qiov, which this commit interprets as 0 bytes.
Consequently, blk_aio_write_zeroes() didn't effectively do anything.

This patch introduces an explicit acb->bytes in BlkAioEmAIOCB and uses
that instead of acb->rwco.size.

The synchronous version of the function is okay because it does pass a
qiov (with the right size and a NULL pointer as its base).
Signed-off-by: NKevin Wolf <kwolf@redhat.com>
Reviewed-by: NMax Reitz <mreitz@redhat.com>

This allows testing blk_aio_write_zeroes().
Signed-off-by: NKevin Wolf <kwolf@redhat.com>
Reviewed-by: NMax Reitz <mreitz@redhat.com>

qemu-sparc update

# gpg: Signature made Fri 15 Apr 2016 09:30:58 BST using RSA key ID AE0F321F
# gpg: Good signature from "Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>"

* remotes/mcayland/tags/qemu-sparc-signed:
  target-sparc: fix Trap Based Address Register behavior for sparc64
  target-sparc: fix Nucleus quad LDD 128 bit access for windowed registers
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

Accoding the chapter 7.6 Trap Processing of the SPARC Architecture Manual v9,
the Trap Based Address Register is not modified as a trap is taken.

This fix allows booting FreeBSD-10.3-RELEASE-sparc64.
Signed-off-by: NArtyom Tarasenko <atar4qemu@gmail.com>
Reviewed-by: NMark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: NMark Cave-Ayland <mark.cave-ayland@ilande.co.uk>

Fix register offset calculation when regwptr is used.
Signed-off-by: NArtyom Tarasenko <atar4qemu@gmail.com>
Reviewed-by: NMark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: NMark Cave-Ayland <mark.cave-ayland@ilande.co.uk>

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

tpm, vhost, virtio: fixes for 2.6

Minor fixes all over the place.
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>

# gpg: Signature made Thu 14 Apr 2016 14:45:55 BST using RSA key ID D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>"
# gpg:                 aka "Michael S. Tsirkin <mst@redhat.com>"

* remotes/mst/tags/for_upstream:
  hw/virtio/balloon: Replace TARGET_PAGE_SIZE with BALLOON_PAGE_SIZE
  tpm: Fix write to file descriptor function
  tpm: acpi: remove IRQ from TPM's CRS to make Windows not see conflict
  pc: acpi: tpm: add missing MMIO resource to PCI0._CRS
  specs/vhost-user: spelling fix
  specs/vhost-user: improve VHOST_SET_VRING_NUM documentation
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

The balloon code currently calls madvise() with TARGET_PAGE_SIZE as
length parameter. Since the virtio-balloon protocol is always based
on 4k pages, no matter what the host and guest are using as page size,
this could cause problems: If TARGET_PAGE_SIZE is bigger than 4k, the
madvise call also destroys the 4k areas after the current one - which
might be wrong since the guest did not want free that area yet (in
case the guest used as smaller MMU page size than the hard-coded
TARGET_PAGE_SIZE). So to fix this issue, introduce a proper define
called BALLOON_PAGE_SIZE (which is 4096) to use this as the size
parameter for the madvise() call instead.
Signed-off-by: NThomas Huth <thuth@redhat.com>
Reviewed-by: NMichael S. Tsirkin <mst@redhat.com>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>

virtio-input; live migration support, various bugfixes.

# gpg: Signature made Wed 13 Apr 2016 16:41:27 BST using RSA key ID D3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>"
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>"
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>"

* remotes/kraxel/tags/pull-input-20160413-1:
  virtio-input: support absolute axis config in pass-through
  input-linux: refine mouse detection
  virtio-input: fix emulated tablet axis ranges
  virtio-input: add live migration support
  virtio-input: implement pass-through evdev writes
  virtio-input: retrieve EV_LED host config bits
  virtio-input: add missing key mappings
  move const_le{16, 23} to qemu/bswap.h, add comment
  virtio-input: add parenthesis to const_le{16, 32}
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

# gpg: Signature made Wed 13 Apr 2016 11:04:51 BST using RSA key ID 75969CE5
# gpg: Good signature from "Marc-André Lureau <marcandre.lureau@redhat.com>"
# gpg:                 aka "Marc-André Lureau <marcandre.lureau@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: 87A9 BD93 3F87 C606 D276  F62D DAE8 E109 7596 9CE5

* remotes/elmarco/tags/ivshmem-fix-pull-request:
  ivshmem: fix ivshmem-{plain,doorbell} crash without arg
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

Fix a bug introduced in commit 46f296cd while moving send_all to the
tpm_passthrough code. Fix the name of the variable used in the loop.
Signed-off-by: NStefan Berger <stefanb@linux.vnet.ibm.com>
Acked-by: NMichael S. Tsirkin <mst@redhat.com>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>

IRQ 5 used by TPM conflicts with PNP0C0F IRQs,
as result Windows fails driver initialization with reason
  'device cannot find enough free resources'
But if TPM._CRS.IRQ entry is commented out, Windows
seems to initialize driver without errors as it doesn't
notice possible conflict and it seems to work
probably due to a link with IRQ 5 being unused/disabled.

So temporary comment out TPM._CRS.IRQ to 'fix'
regression in TPM, with intent to fix it correctly
later i.e.:
  1. pick unused IRQ as default one for TPM
  2. fetch IRQ value from device model so that user
     could override default one if it conflicts with
     some other device.
Signed-off-by: NIgor Mammedov <imammedo@redhat.com>
Reviewed-by: NMichael S. Tsirkin <mst@redhat.com>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>

Windows will fail initialize TMP driver with the reason:
  'device cannot find enough free resources'
That happens because parent BUS doesn't describe
MMIO resources used by TPM child device.
Fix it by describing it in top-most parent bus scope PCI0.

It was 'regressed' by commit
  5cb18b3d TPM2 ACPI table support
with following fixup
  9e472263 acpi: add missing ssdt
which did the right thing by moving TPM to BUS
it belongs to but lacked a proper resource declaration.
Signed-off-by: NIgor Mammedov <imammedo@redhat.com>
Reviewed-by: NMichael S. Tsirkin <mst@redhat.com>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>

Signed-off-by: NMarc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: NMichael S. Tsirkin <mst@redhat.com>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>

"number of vrings" doesn't help me understand the purpose of this
message. My understanding is that it is rather the size of the queue (in
modern terms).
Signed-off-by: NMarc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: NMichael S. Tsirkin <mst@redhat.com>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>

# gpg: Signature made Wed 13 Apr 2016 00:32:22 BST using RSA key ID AAFC390E
# gpg: Good signature from "John Snow (John Huston) <jsnow@redhat.com>"

* remotes/jnsnow/tags/ide-pull-request:
  ide: really restart pending and in-flight atapi dma
  ide: restart atapi dma by re-evaluating command packet
  ide: don't lose pending dma state
  xen: Fix IDE unplug
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

VIRTIO_INPUT_CFG_ABS_INFO was not implemented for pass-through input
devices. This patch follows the existing design and pre-fetches the
config for all absolute axes using EVIOCGABS at realize time.
Signed-off-by: NLadi Prosek <lprosek@redhat.com>
Message-id: 1460558603-18331-1-git-send-email-lprosek@redhat.com
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

Read absolute and relative axis information, only classify
devices as mouse/tablet in case the x axis is present.
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

The reported maximum was wrong. The X and Y coordinates are 0-based
so if size is 8000 maximum must be 7FFF.
Signed-off-by: NLadi Prosek <lprosek@redhat.com>
Message-id: 1460128893-10244-1-git-send-email-lprosek@redhat.com
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

virtio-input is simple enough that it doesn't need to xfer any state.
Still we have to wire up savevm manually, so the generic pci and virtio
are saved correctly.

Additionally we need to do some post-load processing to figure whenever
the guest uses the device or not, so we can give input routing hints to
the qemu input layer using qemu_input_handler_{activate,deactivate}.
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>
Message-id: 1459859501-16965-1-git-send-email-kraxel@redhat.com

The write path for pass-through devices, commonly used for controlling
keyboard LEDs via EV_LED, was not implemented. This commit adds the
necessary plumbing to connect the status virtio queue to the host evdev
file descriptor.
Signed-off-by: NLadi Prosek <lprosek@redhat.com>
Message-id: 1459511146-12060-1-git-send-email-lprosek@redhat.com
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

VIRTIO_INPUT_CFG_EV_BITS with subsel of EV_LED was always
returning an empty bitmap for pass-through input devices.
Signed-off-by: NLadi Prosek <lprosek@redhat.com>
Message-id: 1459418028-7473-1-git-send-email-lprosek@redhat.com
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

KEY_PAUSE is flat out missing. KEY_SYSRQ already has a keycode
assigned but it's not what I'm seeing on my system. The mapping
doesn't appear to have to be unique so both keycodes now map to
KEY_SYSRQ which is what the "Keyboard PrintScreen", HID usage ID
0x46, translates to.
Signed-off-by: NLadi Prosek <lprosek@redhat.com>
Message-id: 1459343240-19483-1-git-send-email-lprosek@redhat.com
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>
Reviewed-by: NEric Blake <eblake@redhat.com>
Message-id: 1460441239-867-1-git-send-email-kraxel@redhat.com

"_x" must be "(_x)" otherwise things fail if you pass in expressions.
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>
Reviewed-by: NEric Blake <eblake@redhat.com>
Message-id: 1460440299-26654-1-git-send-email-kraxel@redhat.com

"qemu -device ivshmem-{plain,doorbell}" will crash, because the device
doesn't check that the required argument is provided. (screwed up in
commit 5400c02b)
Signed-off-by: NMarc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: NMarkus Armbruster <armbru@redhat.com>

Restart of ATAPI DMA used to be unreachable, because the request to do
so wasn't indicated in bus->error_status due to the lack of spare bits, and
ide_restart_bh() would return early doing nothing.

This patch makes use of the observation that not all bit combinations were
possible in ->error_status. In particular, IDE_RETRY_READ only made sense
together with IDE_RETRY_DMA or IDE_RETRY_PIO. This allows to re-use
IDE_RETRY_READ alone as an indicator of ATAPI DMA restart request.

To makes things more uniform, ATAPI DMA gets its own value for ->dma_cmd.
As a means against confusion, macros are added to test the state of
->error_status.

The patch fixes the restart of both in-flight and pending ATAPI DMA,
following the scheme similar to that of IDE DMA.

[Including a fixup patch:
Message-id: 1460465594-15777-1-git-send-email-pbutsykin@virtuozzo.com
--js]
Signed-off-by: NPavel Butsykin <pbutsykin@virtuozzo.com>
Signed-off-by: NDenis V. Lunev <den@openvz.org>
Reviewed-by: NRoman Kagan <rkagan@virtuozzo.com>
Reviewed-by: NJohn Snow <jsnow@redhat.com>
Message-id: 1459924806-306-4-git-send-email-den@openvz.org
Signed-off-by: NJohn Snow <jsnow@redhat.com>

ide_atapi_dma_restart() used to just complete the DMA with an error,
under the assumption that there isn't enough information to restart it.

However, as the contents of the ->io_buffer is preserved, it looks safe to
just re-evaluate it and dispatch the ATAPI command again.
Signed-off-by: NPavel Butsykin <pbutsykin@virtuozzo.com>
Reviewed-by: NRoman Kagan <rkagan@virtuozzo.com>
Signed-off-by: NDenis V. Lunev <den@openvz.org>
Reviewed-by: NJohn Snow <jsnow@redhat.com>
Message-id: 1459924806-306-3-git-send-email-den@openvz.org
Signed-off-by: NJohn Snow <jsnow@redhat.com>

If the migration occurs after the IDE DMA has been set up but before it
has been initiated, the state gets lost upon save/restore. Specifically,
->dma_cb callback gets cleared, so, when the guest eventually starts bus
mastering, the DMA never completes, causing the guest to time out the
operation.

OTOH all the infrastructure is already in place to restart the DMA if
the migration happens while the DMA is in progress.

So reuse that infrastructure, by setting bus->error_status based on
->dma_cmd in pre_save if ->dma_cb callback is already set but DMAING is
clear. This will indicate the need for restart and make sure ->dma_cb
is restored in ide_restart_bh(); howeover since DMAING is clear the state
upon restore will be exactly "ready for DMA" as before the save.
Signed-off-by: NPavel Butsykin <pbutsykin@virtuozzo.com>
Reviewed-by: NRoman Kagan <rkagan@virtuozzo.com>
Signed-off-by: NDenis V. Lunev <den@openvz.org>
Reviewed-by: NJohn Snow <jsnow@redhat.com>
Message-id: 1459924806-306-2-git-send-email-den@openvz.org
Signed-off-by: NJohn Snow <jsnow@redhat.com>

After commit e5e78550 (blockdev: Separate BB name management), starting a
guest with PVHVM support result in this assert:
qemu-system-i386: block/block-backend.c:173: blk_delete: Assertion `!blk->name' failed.

A backtrace show that a caller is pci_piix3_xen_ide_unplug().

This patch fix it.
Signed-off-by: NAnthony PERARD <anthony.perard@citrix.com>
Message-id: 1460382666-29885-1-git-send-email-anthony.perard@citrix.com
Signed-off-by: NJohn Snow <jsnow@redhat.com>

Block layer patches for 2.6

# gpg: Signature made Tue 12 Apr 2016 17:10:29 BST using RSA key ID C88F2FD6
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>"

* remotes/kevin/tags/for-upstream:
  qemu-iotests: iotests.py: get rid of __all__
  qemu-iotests: 068: don't require KVM
  qemu-iotests: 148: properly skip test if quorum support is missing
  qemu-iotests: iotests.VM: remove qtest socket on error
  qemu-iotests: fix 051 on non-PC architectures
  qemu-iotests: check: don't place files with predictable names in /tmp
  MAINTAINERS: Block layer core, qcow2 and blkdebug
  qcow2: Prevent backing file names longer than 1023
  vpc: fix return value check for blk_pwrite
  iotests: Make 150 use qemu-img map instead of du
  block: initialize qcrypto API at startup
  qemu-img: fix formatting of error message
  iotests: fix the broken 026.nocache output
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

Block patches for 2.6-rc2.

# gpg: Signature made Tue Apr 12 18:08:20 2016 CEST using RSA key ID E838ACAD
# gpg: Good signature from "Max Reitz <mreitz@redhat.com>"

* mreitz/tags/pull-block-for-kevin-2016-04-12:
  qemu-iotests: iotests.py: get rid of __all__
  qemu-iotests: 068: don't require KVM
  qemu-iotests: 148: properly skip test if quorum support is missing
  qemu-iotests: iotests.VM: remove qtest socket on error
  qemu-iotests: fix 051 on non-PC architectures
  qemu-iotests: check: don't place files with predictable names in /tmp
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

The __all__ list contained a typo for as long as the iotests module
existed. That typo prevented "from iotests import *" (which is the
only case where iotests.__all__ is used at all) from ever working.

The names used by iotests are highly prone to name collisions, so
importing them all unconditionally is a bad idea anyway. Since __all__
is not adding any value, let's just get rid of it.

Fixes: f345cfd0 ("qemu-iotests: add iotests Python module")
Signed-off-by: NSascha Silbe <silbe@linux.vnet.ibm.com>
Reviewed-by: NBo Tu <tubo@linux.vnet.ibm.com>
Message-id: 1459848109-29756-8-git-send-email-silbe@linux.vnet.ibm.com
Reviewed-by: NMax Reitz <mreitz@redhat.com>
Signed-off-by: NMax Reitz <mreitz@redhat.com>

None of the other test cases explicitly enable KVM and there's no
obvious reason for 068 to require it. Drop this so all test cases can be
executed in environments where KVM is not available (e.g. because the
user doesn't have sufficient permissions to access /dev/kvm).
Signed-off-by: NSascha Silbe <silbe@linux.vnet.ibm.com>
Reviewed-by: NBo Tu <tubo@linux.vnet.ibm.com>
Message-id: 1459848109-29756-6-git-send-email-silbe@linux.vnet.ibm.com
Signed-off-by: NMax Reitz <mreitz@redhat.com>