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Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging
Block layer patches
# gpg: Signature made Tue 18 Jul 2017 14:29:59 BST
# gpg: using RSA key 0x7F09B272C88F2FD6
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>"
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74 56FE 7F09 B272 C88F 2FD6
* remotes/kevin/tags/for-upstream: (21 commits)
qemu-img: Check for backing image if specified during create
blockdev: move BDRV_O_NO_BACKING option forward
block/vvfat: Fix compiler warning with gcc 7
vvfat: initialize memory after allocating it
vvfat: correctly parse non-ASCII short and long file names
vvfat: add a constant for bootsector name
vvfat: add constants for special values of name[0]
qemu-iotests: Test unplug of -device without drive
qemu-iotests: Test 'info block'
scsi-disk: bdrv_attach_dev() for empty CD-ROM
ide: bdrv_attach_dev() for empty CD-ROM
block: List anonymous device BBs in query-block
block/qapi: Use blk_all_next() for query-block
block: Make blk_all_next() public
block/qapi: Add qdev device name to query-block
block: Make blk_get_attached_dev_id() public
block/vpc.c: Handle write failures in get_image_offset()
block/vmdk: Report failures in vmdk_read_cid()
block: remove timer canceling in throttle_config()
block: add clock_type field to ThrottleGroup
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
- add a CPU model for the IBM z14 which was announced on July 17th 2017
- update linux headers to 4.13-rc0 to get a fix for an ioctl definition
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Merge remote-tracking branch 'remotes/borntraeger/tags/s390x-20170718' into staging
s390: add z14 cpu model
- add a CPU model for the IBM z14 which was announced on July 17th 2017
- update linux headers to 4.13-rc0 to get a fix for an ioctl definition
# gpg: Signature made Tue 18 Jul 2017 09:56:24 BST
# gpg: using RSA key 0x117BBC80B5A61C7C
# gpg: Good signature from "Christian Borntraeger (IBM) <borntraeger@de.ibm.com>"
# Primary key fingerprint: F922 9381 A334 08F9 DBAB FBCA 117B BC80 B5A6 1C7C
* remotes/borntraeger/tags/s390x-20170718:
s390x/cpumodel: z14 cpu models
linux header sync against v4.13-rc1
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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Merge remote-tracking branch 'remotes/ehabkost/tags/x86-and-machine-pull-request' into staging
x86 and machine queue, 2017-07-17
# gpg: Signature made Mon 17 Jul 2017 19:46:14 BST
# gpg: using RSA key 0x2807936F984DC5A6
# gpg: Good signature from "Eduardo Habkost <ehabkost@redhat.com>"
# Primary key fingerprint: 5A32 2FD5 ABC4 D3DB ACCF D1AA 2807 936F 984D C5A6
* remotes/ehabkost/tags/x86-and-machine-pull-request:
qmp: Include parent type on 'qom-list-types' output
qmp: Include 'abstract' field on 'qom-list-types' output
tests: Simplify abstract-interfaces check with a helper
i386: add Skylake-Server cpu model
i386: Update comment about XSAVES on Skylake-Client
i386: expose "TCGTCGTCGTCG" in the 0x40000000 CPUID leaf
fw_cfg: move QOM type defines and fw_cfg types into fw_cfg.h
fw_cfg: move qdev_init_nofail() from fw_cfg_init1() to callers
fw_cfg: switch fw_cfg_find() to locate the fw_cfg device by type rather than path
qom: Fix ambiguous path detection when ambiguous=NULL
Revert "machine: Convert abstract typename on compat_props to subclass names"
test-qdev-global-props: Test global property ordering
qdev: fix the order compat and global properties are applied
tests: Test case for object_resolve_path*()
device-crash-test: Fix regexp on whitelist
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Or, rather, force the open of a backing image if one was specified
for creation. Using a similar -unsafe option as rebase, allow qemu-img
to ignore the backing file validation if possible.
It may not always be possible, as in the existing case when a filesize
for the new image was not specified.
This is accomplished by shifting around the conditionals in
bdrv_img_create, such that a backing file is always opened unless we
provide BDRV_O_NO_BACKING. qemu-img is adjusted to pass this new flag
when -u is provided to create.
Sorry for the heinous looking diffstat, but it's mostly whitespace.
Inspired by: https://bugzilla.redhat.com/show_bug.cgi?id=1213786
Signed-off-by: John Snow <jsnow@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
For both external_snapshot_prepare and qmp_drive_mirror, we eventually
append the option BDRV_O_NO_BACKING. However, we generally do so after
we create the image.
To accommodate image creation wanting to verify that a backing file
exists or not, add this option prior to create to override checking
the existence of the backing file. This prevents QEMU from trying to
re-open a backing file that's already in use (thanks to qcow2 locking).
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
gcc 7 complains that the sprintf() might write a null byte beyond the
end of the tail buffer. That is wrong, but we can silence it by making
i unsigned (it can never be negative anyway, see the if condition right
before). For some reason, this allows gcc to suddenly accurately
calculate the range of i so we can give the tail[] array the exact size
it needs to have (which is 8 bytes) without gcc complaining.
In addition, let us convert the sprintf() to snprintf(), because that is
always nicer, and add an assertion about the range of the return value
afterwards so we can see that "8 - len" will never be negative and thus
"entry->name + MIN(j, 8 - len)" will never be out of bounds.
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This prevents some host to guest memory content leaks.
Fixes: https://bugs.launchpad.net/qemu/+bug/1599539
Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Write support works again when image contains non-ASCII names. It is either the
case when user created a non-ASCII filename, or when initial directory contained
a non-ASCII filename (since 0c36111f57)
Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Also add links to related compatibility problems.
Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This caused an assertion failure until recently because the BlockBackend
would be detached on unplug, but was in fact never attached in the first
place. Add a regression test.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
This test makes sure that all block devices show up on 'info block',
with all of the expected information, in different configurations.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
If no drive=... option is passed (for an empty drive), we don't only
lack the BlockBackend normally created by parse_drive(), but we also
need to manually call blk_attach_dev().
This fixes at least a segfault when unplugging such devices, the bug
that they didn't show up in query-block, and probably some more
problems.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
If no drive=... option is passed (for an empty drive), we don't only
lack the BlockBackend normally created by parse_drive(), but we also
need to manually call blk_attach_dev().
IDE does not support hot unplug, but if it did, qdev would take care to
call the matching blk_detach_dev() on unplug.
This fixes at least the bug that such devices didn't show up in
query-block, and probably some more problems.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Instead of listing only monitor-owned BlockBackends in query-block, also
add those anonymous BlockBackends that are owned by a qdev device and as
such under the control of the user.
This allows using query-block to inspect BlockBackends for the modern
configuration syntax with -blockdev and -device.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
This patch replaces the blk_next() loop in query-block by a
blk_all_next() one so that we also get access to BlockBackends that
aren't owned by the monitor. For now, the next thing we do is check
whether each BB has a name, so there is no semantic difference.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
With -blockdev/-device, users can indirectly create anonymous
BlockBackends, while the state of such backends is still of interest. As
a preparation for making such BBs visible in query-block, make sure that
they can be identified even without a name by adding the ID/QOM path of
their qdev device to BlockInfo.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Coverity (CID 1355236) points out that get_image_offset() doesn't check that
it actually succeeded in writing the updated block bitmap to the file.
Check the error return from bdrv_pwrite_sync() and propagate an error
response back up to the function which calls get_image_offset() for
a write so that it can return the error to its caller.
get_sector_offset() is only used for reads, but we move it to the
same API for consistency.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
The function vmdk_read_cid() can fail if the read on the underlying
block device fails, or if there's a format error in the VMDK file.
However its API doesn't provide a mechanism to report these errors,
and in some cases we were returning a CID of 0 and in some cases a
CID of 0xffffffff, either of which might potentially be valid values.
Change the function to return 0 on success or a negative errno, and
return the CID via a uint32_t* argument. Update the callsites to
handle and propagate the error appropriately.
This fixes in passing a Coverity-spotted issue (CID 1350038) where
we weren't checking the return value from sscanf().
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
throttle_config() cancels the timers of the calling BlockBackend. This
doesn't make sense because other BlockBackends in the group remain
untouched. There's no need to cancel the timers in the one specific
BlockBackend so let's not do that. Throttled requests will run as
scheduled and future requests will follow the new configuration. This
also allows a throttle group's configuration to be changed even when it
has no members.
Signed-off-by: Manos Pitsidianakis <el13635@mail.ntua.gr>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Clock type in throttling is currently inferred by the ThrottleTimer's
clock type even though it is a per-ThrottleGroup property; it doesn't
make sense to have different clock types in the same group. Moving this
to a field in ThrottleGroup can simplify some of the throttle functions.
Signed-off-by: Manos Pitsidianakis <el13635@mail.ntua.gr>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
I can't see how overlay_bs could become NULL with the current code, but
other code in this function already checks it and we can make Coverity
happy with this check, so let's add it.
Cc: qemu-stable@nongnu.org
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
* new command: qemu-get-osinfo
* build fix for OpenBSD
* better error-reporting for failure on keyfile dump
* remove redundant initialization of qa_state global
* include libpcre in w32 package
* w32 localization fixes for service installation/registration
v2:
* fix build issue with older GCCs introduced with guest_get_osinfo
* relocated some declarations in guest_get_osinfo
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Merge remote-tracking branch 'remotes/mdroth/tags/qga-pull-2017-07-17-v2-tag' into staging
qemu-ga patch queue
* new command: qemu-get-osinfo
* build fix for OpenBSD
* better error-reporting for failure on keyfile dump
* remove redundant initialization of qa_state global
* include libpcre in w32 package
* w32 localization fixes for service installation/registration
v2:
* fix build issue with older GCCs introduced with guest_get_osinfo
* relocated some declarations in guest_get_osinfo
# gpg: Signature made Tue 18 Jul 2017 11:52:45 BST
# gpg: using RSA key 0x3353C9CEF108B584
# gpg: Good signature from "Michael Roth <flukshun@gmail.com>"
# gpg: aka "Michael Roth <mdroth@utexas.edu>"
# gpg: aka "Michael Roth <mdroth@linux.vnet.ibm.com>"
# Primary key fingerprint: CEAC C9E1 5534 EBAB B82D 3FA0 3353 C9CE F108 B584
* remotes/mdroth/tags/qga-pull-2017-07-17-v2-tag:
test-qga: add test for guest-get-osinfo
test-qga: pass environemnt to qemu-ga
qemu-ga: add guest-get-osinfo command
qga: report error on keyfile dump error
qga-win32: remove a redundancy code
qemu-ga: check if utmpx.h is available on the system
qemu-ga: add missing libpcre to MSI build
qga-win: fix installation on localized windows
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Add test for guest-get-osinfo command.
Qemu-ga was modified to accept QGA_OS_RELEASE environment variable. If
the variable is defined it is interpreted as path to the os-release file
and it is parsed instead of the default paths.
Signed-off-by: Tomáš Golembiovský <tgolembi@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
* move declarations to beginning of functions
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Add a new 'guest-get-osinfo' command for reporting basic information of
the guest operating system. This includes machine architecture,
version and release of the kernel and several fields from os-release
file if it is present (as defined in [1]).
[1] https://www.freedesktop.org/software/systemd/man/os-release.html
Signed-off-by: Vinzenz Feenstra <vfeenstr@redhat.com>
Signed-off-by: Tomáš Golembiovský <tgolembi@redhat.com>
* moved declarations to beginning of functions
* dropped unecessary initialization of struct utsname
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
* new model of the ARM MPS2/MPS2+ FPGA based development board
* clean up DISAS_* exit conditions and fix various regressions
since commits e75449a3468a6b28c7b5 (in particular including
ones which broke OP-TEE guests)
* make Cortex-M3 and M4 correctly default to 8 PMSA regions
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Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20170717' into staging
target-arm queue:
* new model of the ARM MPS2/MPS2+ FPGA based development board
* clean up DISAS_* exit conditions and fix various regressions
since commits e75449a3468a6b28c7b5 (in particular including
ones which broke OP-TEE guests)
* make Cortex-M3 and M4 correctly default to 8 PMSA regions
# gpg: Signature made Mon 17 Jul 2017 13:43:45 BST
# gpg: using RSA key 0x3C2525ED14360CDE
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>"
# gpg: aka "Peter Maydell <pmaydell@gmail.com>"
# gpg: aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>"
# Primary key fingerprint: E1A5 C593 CD41 9DE2 8E83 15CF 3C25 25ED 1436 0CDE
* remotes/pmaydell/tags/pull-target-arm-20170717:
MAINTAINERS: Add entries for MPS2 board
hw/arm/mps2: Add ethernet
hw/arm/mps2: Add SCC
hw/misc/mps2_scc: Implement MPS2 Serial Communication Controller
hw/arm/mps2: Add timers
hw/char/cmsdk-apb-timer: Implement CMSDK APB timer device
hw/arm/mps2: Add UARTs
hw/char/cmsdk-apb-uart.c: Implement CMSDK APB UART
hw/arm/mps2: Implement skeleton mps2-an385 and mps2-an511 board models
target/arm: use DISAS_EXIT for eret handling
target/arm: use gen_goto_tb for ISB handling
target/arm/translate: ensure gen_goto_tb sets exit flags
target/arm/translate.h: expand comment on DISAS_EXIT
target/arm/translate: make DISAS_UPDATE match declared semantics
include/exec/exec-all: document common exit conditions
target/arm: Make Cortex-M3 and M4 default to 8 PMSA regions
qdev: support properties which don't set a default value
qdev-properties.h: Explicitly set the default value for arraylen properties
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This patch introduces the CPU model for z14, along with all base and
optional features.
Signed-off-by: Jason J. Herne <jjherne@linux.vnet.ibm.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Version: GnuPG v1
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Merge remote-tracking branch 'remotes/jasowang/tags/net-pull-request' into staging
# gpg: Signature made Mon 17 Jul 2017 13:17:17 BST
# gpg: using RSA key 0xEF04965B398D6211
# gpg: Good signature from "Jason Wang (Jason Wang on RedHat) <jasowang@redhat.com>"
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 215D 46F4 8246 689E C77F 3562 EF04 965B 398D 6211
* remotes/jasowang/tags/net-pull-request:
virtio-net: fix offload ctrl endian
virtion-net: Prefer is_power_of_2()
docs/colo-proxy.txt: Update colo-proxy usage of net driver with vnet_header
net/filter-rewriter.c: Make filter-rewriter support vnet_hdr_len
net/colo-compare.c: Add vnet packet's tcp/udp/icmp compare
net/colo.c: Add vnet packet parse feature in colo-proxy
net/colo-compare.c: Make colo-compare support vnet_hdr_len
net/colo-compare.c: Introduce parameter for compare_chr_send()
net/colo.c: Make vnet_hdr_len as packet property
net/filter-mirror.c: Add new option to enable vnet support for filter-redirector
net/filter-mirror.c: Make filter mirror support vnet support.
net/filter-mirror.c: Introduce parameter for filter_send()
net/net.c: Add vnet_hdr support in SocketReadState
net: Add vnet_hdr_len arguments in NetClientState
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This patch documents (including their QMP invocations) all the four
major kinds of live block operations:
- `block-stream`
- `block-commit`
- `drive-mirror` (& `blockdev-mirror`)
- `drive-backup` (& `blockdev-backup`)
Things considered while writing this document:
- Use reStructuredText as markup language (with the goal of generating
the HTML output using the Sphinx Documentation Generator). It is
gentler on the eye, and can be trivially converted to different
formats. (Another reason: upstream QEMU is considering to switch to
Sphinx, which uses reStructuredText as its markup language.)
- Raw QMP JSON output vs. 'qmp-shell'. I debated with myself whether
to only show raw QMP JSON output (as that is the canonical
representation), or use 'qmp-shell', which takes key-value pairs. I
settled on the approach of: for the first occurrence of a command,
use raw JSON; for subsequent occurrences, use 'qmp-shell', with an
occasional exception.
- Usage of `-blockdev` command-line.
- Usage of 'node-name' vs. file path to refer to disks. While we have
`blockdev-{mirror, backup}` as 'node-name'-alternatives for
`drive-{mirror, backup}`, the `block-commit` command still operates
on file names for parameters 'base' and 'top'. So I added a caveat
at the beginning to that effect.
Refer this related thread that I started (where I learnt
`block-stream` was recently reworked to accept 'node-name' for 'top'
and 'base' parameters):
https://lists.nongnu.org/archive/html/qemu-devel/2017-05/msg06466.html
"[RFC] Making 'block-stream', and 'block-commit' accept node-name"
All commands showed in this document were tested while documenting.
Thanks: Eric Blake for the section: "A note on points-in-time vs file
names". This useful bit was originally articulated by Eric in his
KVMForum 2015 presentation, so I included that specific bit in this
document.
Signed-off-by: Kashyap Chamarthy <kchamart@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 20170717105205.32639-3-kchamart@redhat.com
Signed-off-by: Jeff Cody <jcody@redhat.com>
This is part of the on-going effort to convert QEMU upstream
documentation syntax to reStructuredText (rST).
The conversion to rST was done using:
$ pandoc -f markdown -t rst bitmaps.md -o bitmaps.rst
Then, make a couple of small syntactical adjustments. While at it,
reword a statement to avoid ambiguity. Addressing the feedback from
this thread:
https://lists.nongnu.org/archive/html/qemu-devel/2017-06/msg05428.html
Signed-off-by: Kashyap Chamarthy <kchamart@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 20170717105205.32639-2-kchamart@redhat.com
Signed-off-by: Jeff Cody <jcody@redhat.com>
In the first line of run_agent,it has set ga_state = s,don't need
set ga_state = s again behind.
Signed-off-by: Peng Hao <peng.hao2@zte.com.cn>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Commit 161a56a906 added command guest-get-users and requires the
utmpx.h (defined by POSIX) to work. It is however not always available
(e.g. on OpenBSD) therefor a check for its existence is necessary.
Signed-off-by: Tomáš Golembiovský <tgolembi@redhat.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
glib depends on libpcre which was not shipped with the MSI, thus
starting of the qemu-ga.exe failed with the respective error message.
Tell WIXL to ship this library with the MSI to avoid this problem.
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
CC: Stefan Weil <sw@weilnetz.de>
CC: Michael Roth <mdroth@linux.vnet.ibm.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Bug: https://bugzilla.redhat.com/show_bug.cgi?id=1357789
Replace hardcoded user and group names ("Administrators", "SYSTEM") with the ones acquired from system. Windows uses localized strings for these names and it may cause the installation to fail.
Windows has Well-known SIDs for "Administrators" group and "SYSTEM" user so they were used to identify required users and groups.
Well-known SIDs: https://support.microsoft.com/en-us/help/243330/well-known-security-identifiers-in-windows-operating-systems
Signed-off-by: Daniel Rempel <daniel@daynix.com>
Signed-off-by: Sameeh Jubran <sjubran@redhat.com>
Reviewed-by: Sameeh Jubran <sameeh@daynix.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
A typo in commit 23e099c set the size of buf[] used in response
to NBD_OPT_EXPORT_NAME according to the length needed for old-style
negotiation (4 bytes of flag information) instead of the intended
2 bytes used in new style. If the client doesn't enable
NBD_FLAG_C_NO_ZEROES, then the server sends two bytes too many,
and is then out of sync in response to the client's next command
(the bug is masked when modern qemu is the client, since we enable
the no zeroes flag).
While touching this code, add some more defines to nbd_internal.h
rather than having quite so many magic numbers in the .c; also,
use "" initialization rather than memset(), and tweak the oldstyle
negotiation to better match the spec description of the layout
(since the spec is big-endian, skipping two bytes as 0 followed by
writing a 2-byte flag is the same as writing a zero-extended 4-byte
flag), to make it a bit easier to follow compared to the spec.
[checkpatch.pl has some false positives in the comments]
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20170717192635.17880-3-eblake@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Make the client trace slightly more legible by including the name
of the command being sent.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-Id: <20170717192635.17880-2-eblake@redhat.com>
The rotation is to the left, but extract shifts to the right.
The computation of the extract parameters needs adjusting.
For the entry condition, simplify
64 - rot + len <= 64
-rot + len <= 0
len <= rot
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Reported-by: David Hildenbrand <david@redhat.com>
Suggested-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
STFL bit 4 and 5 are just indications to the guest, which TLB entries an
IDTE call will clear. These are performance indicators for the guest.
STFL bit 4:
INVALIDATE DAT TABLE ENTRY (IDTE) performs
the invalidation-and-clearing operation by
selectively clearing TLB segment-table entries
when a segment-table entry or entries are
invalidated. IDTE also performs the clearing-by-
ASCE operation. Unless bit 4 is one, IDTE simply
purges all TLBs. Bit 3 is one if bit 4 is one.
We can simply set STFL bit 4 ("idtes") and still purge the complete TLB.
Purging more than advertised is never bad. E.g. Linux doesn't even care
about this bit. We can optimized this later.
This is helpful, as the z9 base model contains this facility.
STFL bit 5 (clearing TLB region-table-entries) was never implemented on
real HW, therefore we can simply ignore it for now.
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20170627161032.5014-1-david@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Peter Maydell