Eric Auger [Wed, 4 Apr 2018 20:30:50 +0000 (22:30 +0200)]
vfio: Use a trace point when a RAM section cannot be DMA mapped
Commit 567b5b309abe ("vfio/pci: Relax DMA map errors for MMIO regions")
added an error message if a passed memory section address or size
is not aligned to the page size and thus cannot be DMA mapped.
This patch fixes the trace by printing the region name and the
memory region section offset within the address space (instead of
offset_within_region).
We also turn the error_report into a trace event. Indeed, In some
cases, the traces can be confusing to non expert end-users and
let think the use case does not work (whereas it works as before).
This is the case where a BAR is successively mapped at different
GPAs and its sections are not compatible with dma map. The listener
is called several times and traces are issued for each intermediate
mapping. The end-user cannot easily match those GPAs against the
final GPA output by lscpi. So let's keep those information to
informed users. In mid term, the plan is to advise the user about
BAR relocation relevance.
Fixes: 567b5b309abe ("vfio/pci: Relax DMA map errors for MMIO regions") Signed-off-by: Eric Auger <[email protected]> Reviewed-by: Philippe Mathieu-Daudé <[email protected]> Reviewed-by: Alexey Kardashevskiy <[email protected]> Signed-off-by: Alex Williamson <[email protected]>
Jeff Cody [Wed, 4 Apr 2018 15:40:45 +0000 (11:40 -0400)]
block/rbd: remove processed options from qdict
Commit 4bfb274 added some QAPIfication of option parsing in
qemu_rbd_open(). We need to remove all the options we processed,
otherwise in bdrv_open_inherit() we will think the remaining options are
invalid.
(This needs to go in 2.12 to avoid a regression that prevents rbd
from being opened.)
Peter Maydell [Wed, 4 Apr 2018 13:00:07 +0000 (14:00 +0100)]
Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging
Block layer patches
# gpg: Signature made Tue 03 Apr 2018 16:48:53 BST
# gpg: using RSA key 7F09B272C88F2FD6
# gpg: Good signature from "Kevin Wolf <[email protected]>"
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74 56FE 7F09 B272 C88F 2FD6
* remotes/kevin/tags/for-upstream:
iotests: Test abnormally large size in compressed cluster descriptor
qemu-iotests: Use ppc64 qemu_arch on ppc64le host
iotests: Test preallocated truncate of 2G image
block/file-posix: Fix fully preallocated truncate
iotests: fix 208 for luks format
iotests: Update 186 after commit ac64273c66ab136c44043259162
iotests: Update 051 and 186 after commit 1454509726719e0933c
block: handle invalid lseek returns gracefully
gluster: Fix blockdev-add with server.N.type=unix
* remotes/cody/tags/block-pull-request:
gluster: Fix blockdev-add with server.N.type=unix
blockjob: use qapi enum helpers
blockjob: leak fix, remove from txn when failing early
Peter Maydell [Tue, 3 Apr 2018 22:23:58 +0000 (23:23 +0100)]
Merge remote-tracking branch 'remotes/cohuck/tags/s390x-20180403' into staging
- fix a memory leak in the ipl code introduced with this release
- increase timeout in the bios to avoid hangs during migration (and
rebuild bios to activate the change)
Peter Maydell [Tue, 3 Apr 2018 18:02:46 +0000 (19:02 +0100)]
Merge remote-tracking branch 'remotes/xtensa/tags/20180402-xtensa' into staging
xtensa-specific fixes for linux-user:
- fix flushing registers for signal processing in call8 and call12 frames;
- fix PC value for restarted syscalls;
- fix sysv IPC structures;
- fix fadvise64 syscall;
generic fixes for linux-user:
- fix QEMU assertion in multithreaded application by calling cpu_copy
under clone_lock;
- fix mq_getsetattr implementation;
- fix error propagation in clock_gettime;
- implement clock_settime.
Kevin Wolf [Tue, 3 Apr 2018 15:48:45 +0000 (17:48 +0200)]
Merge remote-tracking branch 'mreitz/tags/pull-block-2018-04-03' into queue-block
A fix for preallocated truncation, a new iotest, and a fix to make the iotests work more comfortably on ppc64
# gpg: Signature made Tue Apr 3 17:40:57 2018 CEST
# gpg: using RSA key F407DB0061D5CF40
# gpg: Good signature from "Max Reitz <[email protected]>"
# Primary key fingerprint: 91BE B60A 30DB 3E88 57D1 1829 F407 DB00 61D5 CF40
* mreitz/tags/pull-block-2018-04-03:
iotests: Test abnormally large size in compressed cluster descriptor
qemu-iotests: Use ppc64 qemu_arch on ppc64le host
iotests: Test preallocated truncate of 2G image
block/file-posix: Fix fully preallocated truncate
Alberto Garcia [Thu, 29 Mar 2018 12:07:45 +0000 (15:07 +0300)]
iotests: Test abnormally large size in compressed cluster descriptor
L2 entries for compressed clusters have a field that indicates the
number of sectors used to store the data in the image.
That's however not the size of the compressed data itself, just the
number of sectors where that data is located. The actual data size is
usually not a multiple of the sector size, and therefore cannot be
represented with this field.
The way it works is that QEMU reads all the specified sectors and
starts decompressing the data until there's enough to recover the
original uncompressed cluster. If there are any bytes left that
haven't been decompressed they are simply ignored.
One consequence of this is that even if the size field is larger than
it needs to be QEMU can handle it just fine: it will read more data
from disk but it will ignore the extra bytes.
This test creates an image with two compressed clusters that use 5
sectors (2.5 KB) each, increases the size field to the maximum (8192
sectors, or 4 MB) and verifies that the data can be read without
problems.
This test is important because while the decompressed data takes
exactly one cluster, the maximum value allowed in the compressed size
field is twice the cluster size. So although QEMU won't produce images
with such large values we need to make sure that it can handle them.
Another effect of increasing the size field is that it can make
it include data from the following host cluster(s). In this case
'qemu-img check' will detect that the refcounts are not correct, and
we'll need to rebuild them.
Additionally, this patch also tests that decreasing the size corrupts
the image since the original data can no longer be recovered. In this
case QEMU returns an error when trying to read the compressed data,
but 'qemu-img check' doesn't see anything wrong if the refcounts are
consistent.
One possible task for the future is to make 'qemu-img check' verify
the sizes of the compressed clusters, by trying to decompress the data
and checking that the size stored in the L2 entry is correct.
Lukáš Doktor [Thu, 29 Mar 2018 11:20:53 +0000 (13:20 +0200)]
qemu-iotests: Use ppc64 qemu_arch on ppc64le host
The qemu target does not always correspond to the host machine type. For
example ppc64le machine target is ppc64. Let's introduce "qemu_arch"
variable to store the matching qemu architecture related to the current
architecture and use it when auto-detecting the default qemu binary.
Max Reitz [Wed, 28 Feb 2018 13:13:14 +0000 (14:13 +0100)]
block/file-posix: Fix fully preallocated truncate
Storing the lseek() result in an int results in it overflowing when the
file is at least 2 GB big. Then, we have a 50 % chance of the result
being "negative" and thus thinking an error occurred when actually
everything went just fine.
So we should use the correct type for storing the result: off_t.
Peter Maydell [Tue, 3 Apr 2018 14:59:50 +0000 (15:59 +0100)]
Merge remote-tracking branch 'remotes/ericb/tags/pull-nbd-2018-04-02' into staging
nbd patches for 2018-04-02
- Eric Blake: nbd: Fix 32-bit compilation on BLOCK_STATUS
- Eric Blake: nbd/client: Correctly handle bad server REP_META_CONTEXT
- Eric Blake: nbd: trace meta context negotiation
* remotes/ericb/tags/pull-nbd-2018-04-02:
nbd: trace meta context negotiation
nbd/client: Correctly handle bad server REP_META_CONTEXT
nbd: Fix 32-bit compilation on BLOCK_STATUS
Commit ac64273c66ab136c44 modified the output of iotest 186, changing
the QOM path of floppy drives from /machine/unattached/device[17] to
/machine/unattached/device[13].
Instead of updating the test output to reflect this change, this patch
adds a new filter that hides all QOM paths from the 'Attached to:'
line of the 'info block' command.
Kevin Wolf [Tue, 3 Apr 2018 11:08:10 +0000 (13:08 +0200)]
gluster: Fix blockdev-add with server.N.type=unix
The legacy command line interface gets the socket path from an option
called 'socket'. QAPI in contract uses SocketAddress, where the
corresponding option is called 'path'.
Fix the gluster block driver to accept both 'socket' and 'path', with
'path' being the preferred syntax.
blockjob: leak fix, remove from txn when failing early
This fixes leaks found by ASAN such as:
GTESTER tests/test-blockjob
=================================================================
==31442==ERROR: LeakSanitizer: detected memory leaks
Direct leak of 24 byte(s) in 1 object(s) allocated from:
#0 0x7f88483cba38 in __interceptor_calloc (/lib64/libasan.so.4+0xdea38)
#1 0x7f8845e1bd77 in g_malloc0 ../glib/gmem.c:129
#2 0x7f8845e1c04b in g_malloc0_n ../glib/gmem.c:360
#3 0x5584d2732498 in block_job_txn_new /home/elmarco/src/qemu/blockjob.c:172
#4 0x5584d2739b28 in block_job_create /home/elmarco/src/qemu/blockjob.c:973
#5 0x5584d270ae31 in mk_job /home/elmarco/src/qemu/tests/test-blockjob.c:34
#6 0x5584d270b1c1 in do_test_id /home/elmarco/src/qemu/tests/test-blockjob.c:57
#7 0x5584d270b65c in test_job_ids /home/elmarco/src/qemu/tests/test-blockjob.c:118
#8 0x7f8845e40b69 in test_case_run ../glib/gtestutils.c:2255
#9 0x7f8845e40f29 in g_test_run_suite_internal ../glib/gtestutils.c:2339
#10 0x7f8845e40fd2 in g_test_run_suite_internal ../glib/gtestutils.c:2351
#11 0x7f8845e411e9 in g_test_run_suite ../glib/gtestutils.c:2426
#12 0x7f8845e3fe72 in g_test_run ../glib/gtestutils.c:1692
#13 0x5584d270d6e2 in main /home/elmarco/src/qemu/tests/test-blockjob.c:377
#14 0x7f8843641f29 in __libc_start_main (/lib64/libc.so.6+0x20f29)
Add an assert to make sure that the job doesn't have associated txn before free().
[Jeff Cody: N.B., used updated patch provided by John Snow]
Jeff Cody [Tue, 3 Apr 2018 04:37:26 +0000 (00:37 -0400)]
block: handle invalid lseek returns gracefully
In commit 223a23c198787328ae75bc65d84edf5fde33c0b6, we implemented a
workaround in the gluster driver to handle invalid values returned for
SEEK_DATA or SEEK_HOLE.
In some instances, these same invalid values can be seen in the posix
file handler as well - for example, it has been reported on FUSE gluster
mounts.
Calling assert() for these invalid values is overly harsh; we can safely
return -EIO and allow this case to be treated as a "learned nothing"
case (e.g., D4 / H4, as commented in the code).
This patch does the same thing that 223a23c198787 did for gluster.c,
except in file-posix.c
Kevin Wolf [Tue, 3 Apr 2018 10:58:32 +0000 (12:58 +0200)]
gluster: Fix blockdev-add with server.N.type=unix
The legacy command line interface gets the socket path from an option
called 'socket'. QAPI in contract uses SocketAddress, where the
corresponding option is called 'path'.
Fix the gluster block driver to accept both 'socket' and 'path', with
'path' being the preferred syntax.
Cornelia Huck [Thu, 29 Mar 2018 14:13:37 +0000 (10:13 -0400)]
pc-bios/s390-ccw: update image
Contains the following commits:
- pc-bios/s390-ccw: Move string arrays from bootmap header to .c file
- pc-bios/s390-ccw: Increase virtio timeout to 30 seconds
Thomas Huth [Thu, 29 Mar 2018 09:37:31 +0000 (11:37 +0200)]
pc-bios/s390-ccw: Increase virtio timeout to 30 seconds
The current timeout is set to only three seconds - and considering that
vring_wait_reply() or rather get_second() is not doing any rounding,
the real timeout is likely rather 2 seconds in most cases. When the
host is really badly loaded, it's possible that we hit this timeout by
mistake; it's even more likely if we run the guest in TCG mode instead
of KVM.
So let's increase the timeout to 30 seconds instead to ease this situation
(30 seconds is also the timeout that is used by the Linux SCSI subsystem
for example, so this seems to be a sane value for block IO timeout).
Eric Blake [Thu, 29 Mar 2018 23:18:37 +0000 (18:18 -0500)]
nbd/client: Correctly handle bad server REP_META_CONTEXT
It's never a good idea to blindly read for size bytes as
returned by the server without first validating that the size
is within bounds; a malicious or buggy server could cause us
to hang or get out of sync from reading further messages.
It may be smarter to try and teach the client to cope with
unexpected context ids by silently ignoring them instead of
hanging up on the server, but for now, if the server doesn't
reply with exactly the one context we expect, it's easier to
just give up - however, if we give up for any reason other
than an I/O failure, we might as well try to politely tell
the server we are quitting rather than continuing.
Eric Blake [Tue, 27 Mar 2018 21:05:17 +0000 (16:05 -0500)]
nbd: Fix 32-bit compilation on BLOCK_STATUS
iotests 123 and 209 fail on 32-bit platforms. The culprit:
sizeof(extent) is wrong; we want sizeof(*extent). But since
the struct is 8 bytes, it happened to work on 64-bit platforms
where the pointer is also 8 bytes (nasty).
Max Filippov [Sun, 1 Apr 2018 20:14:04 +0000 (13:14 -0700)]
linux-user: fix error propagation in clock_gettime
host_to_target_timespec may return error if target address could not be
locked, but it is ignored.
Propagate return value of host_to_target_timespec to the caller of
clock_gettime.
- make target_ipc_perm fields match kernel definitions for xtensa;
- add target_semid64_ds with proper order of times and reserved fields
for little/big endian specific for xtensa;
- add missing reserved fields after time fields to the target_shmid_ds;
- fix types of shm_cpid, shm_lpid and shm_nattch fields of
target_shmid_ds to match kernel definitions for xtensa.
These changes fix guest ipcs output and fix glibc testsuite tests
sysvipc/test-sysvsem and sysvipc/test-sysvshm.
Max Filippov [Sat, 31 Mar 2018 15:20:15 +0000 (08:20 -0700)]
linux-user: fix mq_getsetattr implementation
mq_getsetattr implementation does not set errno correctly in case of
error. Also in the presence of both 2nd and 3rd arguments it calls both
mq_getattr and mq_setattr, whereas only the latter call would suffice.
Don't call mq_getattr in the presence of the 2nd argument. Don't copy
output back to user in case of error. Use get_errno to set errno value.
This fixes test rt/tst-mqueue2 from the glibc testsuite.
Max Filippov [Fri, 30 Mar 2018 13:19:58 +0000 (06:19 -0700)]
linux-user: call cpu_copy under clone_lock
cpu_copy adds newly created CPU object to container/machine/unattached,
but does it w/o proper locking. As a result when multiple threads create
threads rapidly QEMU may abort with the following message:
Max Filippov [Wed, 28 Mar 2018 07:25:22 +0000 (00:25 -0700)]
target/xtensa: fix flush_window_regs
flush_window_regs uses wrong stack frame to save overflow registers in
call8 and call12 frames, which results in wrong register values in
callers of a function that received a signal.
Reimplement flush_window_regs closely following window overflow
sequence.
Peter Maydell [Sat, 31 Mar 2018 08:42:33 +0000 (09:42 +0100)]
Merge remote-tracking branch 'remotes/riscv/tags/riscv-qemu-2.12-critical-fixes' into staging
RISC-V: Critical fixes for QEMU 2.12
This series includes changes that are considered release critical,
such as floating point register file corruption under SMP Linux
due to incorrect handling of mstatus.FS.
This workaround will be replaced with a more comprehensive fix
for mstatus.FS handling in QEMU 2.13.
# gpg: Signature made Thu 29 Mar 2018 18:22:42 BST
# gpg: using DSA key 6BF1D7B357EF3E4F
# gpg: Good signature from "Michael Clark <[email protected]>"
# gpg: aka "Michael Clark <[email protected]>"
# gpg: aka "Michael Clark <[email protected]>"
# 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: 7C99 930E B17C D8BA 073D 5EFA 6BF1 D7B3 57EF 3E4F
* remotes/riscv/tags/riscv-qemu-2.12-critical-fixes:
RISC-V: Workaround for critical mstatus.FS bug
Peter Maydell [Sat, 31 Mar 2018 07:39:08 +0000 (08:39 +0100)]
Merge remote-tracking branch 'remotes/jasowang/tags/net-pull-request' into staging
# gpg: Signature made Fri 30 Mar 2018 04:49:42 BST
# gpg: using RSA key EF04965B398D6211
# gpg: Good signature from "Jason Wang (Jason Wang on RedHat) <[email protected]>"
# 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: 215D 46F4 8246 689E C77F 3562 EF04 965B 398D 6211
* remotes/jasowang/tags/net-pull-request:
qemu-doc: Rework the network options chapter to make "-net" less prominent
Peter Maydell [Fri, 30 Mar 2018 22:05:19 +0000 (23:05 +0100)]
Merge remote-tracking branch 'remotes/stefanberger/tags/pull-tpm-2018-03-29-1' into staging
Merge tpm 2018/03/29 v1
# gpg: Signature made Fri 30 Mar 2018 01:04:47 BST
# gpg: using RSA key 75AD65802A0B4211
# gpg: Good signature from "Stefan Berger <[email protected]>"
# 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: B818 B9CA DF90 89C2 D5CE C66B 75AD 6580 2A0B 4211
* remotes/stefanberger/tags/pull-tpm-2018-03-29-1:
tests: Tests more flags of the CRB interface
tpm: CRB: Enforce locality is requested before processing buffer
tpm: CRB: Reset Granted flag when relinquishing locality
tpm: CRB: set the Idle flag by default
Thomas Huth [Mon, 12 Mar 2018 12:20:50 +0000 (13:20 +0100)]
qemu-doc: Rework the network options chapter to make "-net" less prominent
"-net" is clearly a legacy option. Yet we still use it in almost all
examples in the qemu documentation, and many other spots in the network
chapter. We should make it less prominent that users are not lured into
using it so often anymore. So instead of starting the network chapter with
"-net nic" and documenting "-net <backend>" below "-netdev <backend>"
everywhere, all the "-net" related documentation is now moved to the end
of the chapter. The new "-nic" option is moved to the beginning of the
chapter instead, with a new example that should demonstrate how "-nic"
can be used to shortcut "-device" with "-netdev". The examples in this
chapter are changed to use the "-device" and "-netdev" options or
"-nic" instead of "-net nic -net <backend>".
While we're at it, also remove a legacy remark about very old Linux
distributions. Also remove the "[...]" from the examples in this chapter
since we are not using this ellipsis in any other examples in our docu-
mentation.
Stefan Berger [Wed, 28 Mar 2018 19:39:17 +0000 (15:39 -0400)]
tpm: CRB: Enforce locality is requested before processing buffer
Section 5.5.3.2.2 of the CRB specs states that use of the TPM
through the localty control method must first be requested,
otherwise the command will be dropped.
Michael Clark [Fri, 23 Mar 2018 23:49:07 +0000 (16:49 -0700)]
RISC-V: Workaround for critical mstatus.FS bug
This change is a workaround for a bug where mstatus.FS
is not correctly reporting dirty after operations that
modify floating point registers. This a critical bug
or RISC-V in QEMU as it results in floating point
register file corruption when running SMP Linux due to
task migration and possibly uniprocessor Linux if
more than one process is using the FPU.
This workaround will return dirty if mstatus.FS is
switched from off to initial or clean. According to
the specification it is legal for an implementation
to return only off, or dirty.
migration: Don't activate block devices if using -S
Activating the block devices causes the locks to be taken on
the backing file. If we're running with -S and the destination libvirt
hasn't started the destination with 'cont', it's expecting the locks are
still untaken.
Don't activate the block devices if we're not going to autostart the VM;
'cont' already will do that anyway.
Direct leak of 16 byte(s) in 1 object(s) allocated from:
#0 0x7fe1abb80a38 in __interceptor_calloc (/lib64/libasan.so.4+0xdea38)
#1 0x7fe1aaf1bf75 in g_malloc0 ../glib/gmem.c:124
#2 0x7fe1aaf1c249 in g_malloc0_n ../glib/gmem.c:355
#3 0x55f4841cfaa9 in postcopy_ram_fault_thread /home/elmarco/src/qemu/migration/postcopy-ram.c:596
#4 0x55f48479447b in qemu_thread_start /home/elmarco/src/qemu/util/qemu-thread-posix.c:504
#5 0x7fe1a043550a in start_thread (/lib64/libpthread.so.0+0x750a)
Peter Maydell [Wed, 28 Mar 2018 21:13:38 +0000 (22:13 +0100)]
Merge remote-tracking branch 'remotes/riscv/tags/riscv-qemu-2.12-important-fixes' into staging
RISC-V: Important fixes for QEMU 2.12
This series includes changes that are considered important.
i.e. correct user-visible bugs that are exercised by common
operations such as -cpu list (CPU model changes) or -d in_asm
(fix for disassembly of addiw)
# gpg: Signature made Wed 28 Mar 2018 21:34:57 BST
# gpg: using DSA key 6BF1D7B357EF3E4F
# gpg: Good signature from "Michael Clark <[email protected]>"
# gpg: aka "Michael Clark <[email protected]>"
# gpg: aka "Michael Clark <[email protected]>"
# 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: 7C99 930E B17C D8BA 073D 5EFA 6BF1 D7B3 57EF 3E4F
* remotes/riscv/tags/riscv-qemu-2.12-important-fixes:
RISC-V: Fix incorrect disassembly for addiw
RISC-V: Convert cpu definition to future model
Michael Clark [Fri, 23 Mar 2018 08:07:01 +0000 (01:07 -0700)]
RISC-V: Fix incorrect disassembly for addiw
This fixes a bug in the disassembler constraints used
to lift instructions into pseudo-instructions, whereby
addiw instructions are always lifted to sext.w instead
of just lifting addiw with a zero immediate.
An associated fix has been made to the metadata used to
machine generate the disseasembler:
Michael Clark [Thu, 8 Mar 2018 22:12:31 +0000 (11:12 +1300)]
RISC-V: Convert cpu definition to future model
- Model borrowed from target/sh4/cpu.c
- Rewrote riscv_cpu_list to use object_class_get_list
- Dropped 'struct RISCVCPUInfo' and used TypeInfo array
- Replaced riscv_cpu_register_types with DEFINE_TYPES
- Marked base class as abstract
- Fixes -cpu list
Failure to do so results in the tcg optimizer sign-extending
any constant fold from 32-bits. This turns out to be visible
in the RISC-V testsuite using a host that emits these opcodes
(e.g. any non-x86_64).
GDB crashes when qemu exits (at least on sparc-softmmu):
Remote communication error. Target disconnected.: Connection reset by peer.
Quitting: putpkt: write failed: Broken pipe.
So send a packet to exit GDB before we exit QEMU:
[Inferior 1 (Thread 0) exited normally]
Commit 137b5cb6 refactored 'info cpus' output, changing
'thread_id' to 'thread-id'. While HMP is not a stable
interface, it is trivial to keep the spelling consistent
for test frameworks that have not yet updated to using QMP.
This patch just reverts back output format to 'thread_id'.
Peter Xu [Mon, 26 Mar 2018 06:39:01 +0000 (14:39 +0800)]
tests: qmp-test: add test for new "x-oob"
Test the new OOB capability. It's mostly the reverted OOB test
(see commit 4fd78ad7), but differs in that:
- It uses the new qtest_init_without_qmp_handshake() parameter to
create the monitor with "x-oob"
- Squashed the capability tests on greeting message
- Don't use qtest_global any more, instead use self-maintained
QTestState, which is the trend
Eric Blake [Tue, 27 Mar 2018 01:36:19 +0000 (20:36 -0500)]
tests: Add parameter to qtest_init_without_qmp_handshake
Allow callers to choose whether to allow OOB support during a test;
for now, all existing callers pass false, but the next patch will
add a new caller. Also, rewrite the monitor setup to be generic
(using the -qmp shorthand is insufficient for honoring the parameter).
It is not allowed if either MUX or non-QMP is detected, since
Out-Of-Band is currently only for QMP, and non-MUX chardev backends.
Note that the client STILL has to request 'oob' during qmp_capabilities;
in part because the x-oob command line option may disappear in the
future if we decide the capabilities negotiation is sufficient.
Peter Xu [Mon, 26 Mar 2018 06:38:55 +0000 (14:38 +0800)]
qmp: cleanup qmp queues properly
Marc-André Lureau reported that we can have this happen:
1. client1 connects, send command C1
2. client1 disconnects before getting response for C1
3. client2 connects, who might receive response of C1
However client2 should not receive remaining responses for client1.
Basically, we should clean up the request/response queue elements when:
- after a session is closed
- before destroying the queues
Some helpers are introduced to achieve that. We need to make sure we're
with the lock when operating on those queues. This also needed the
declaration of QMPRequest moved earlier.
Peter Xu [Mon, 26 Mar 2018 06:38:58 +0000 (14:38 +0800)]
tests: let qapi-schema tests detect oob
The allow_oob parameter was passed in but not used in tests. Now
reflect that in the tests, so we need to touch up other command testers
with that new change.
Eric Blake [Fri, 23 Mar 2018 20:43:41 +0000 (15:43 -0500)]
tests: Silence false positive warning on generated test name
Running 'make check' on rawhide with gcc 8.0.1 fails:
tests/test-visitor-serialization.c: In function 'main':
tests/test-visitor-serialization.c:1127:34: error: '/primitives/' directive writing 12 bytes into a region of size between 1 and 128 [-Werror=format-overflow=]
The warning is a false positive (we have two buffers of size 128,
so yes, if we FULLY used the first buffer, then sprint'ing it into
the second will overflow the second). But in practice, our first
buffer will not be longer than "/visitor/serialization/String",
so sizing it smaller is enough to let gcc see that we don't
overflow the second.
Stefan Hajnoczi [Mon, 12 Mar 2018 13:22:04 +0000 (13:22 +0000)]
MAINTAINERS: add include/block/aio-wait.h
The include/block/aio-wait.h header file was added by commit 7719f3c968c59e1bcda7e177679dc765b59e578f ("block: extract
AIO_WAIT_WHILE() from BlockDriverState") without updating MAINTAINERS.
Stefan Hajnoczi [Thu, 22 Mar 2018 15:28:33 +0000 (15:28 +0000)]
coroutine: avoid co_queue_wakeup recursion
qemu_aio_coroutine_enter() is (indirectly) called recursively when
processing co_queue_wakeup. This can lead to stack exhaustion.
This patch rewrites co_queue_wakeup in an iterative fashion (instead of
recursive) with bounded memory usage to prevent stack exhaustion.
qemu_co_queue_run_restart() is inlined into qemu_aio_coroutine_enter()
and the qemu_coroutine_enter() call is turned into a loop to avoid
recursion.
There is one change that is worth mentioning: Previously, when
coroutine A queued coroutine B, qemu_co_queue_run_restart() entered
coroutine B from coroutine A. If A was terminating then it would still
stay alive until B yielded. After this patch B is entered by A's parent
so that a A can be deleted immediately if it is terminating.
It is safe to make this change since B could never interact with A if it
was terminating anyway.
Mark Cave-Ayland [Tue, 27 Mar 2018 04:38:00 +0000 (00:38 -0400)]
macio: fix NULL pointer dereference when issuing IDE trim
Commit ef0e64a983 "ide: pass IDEState to trim AIO callback" changed the
IDE trim callback from using a BlockBackend to an IDEState but forgot to update
the dma_blk_io() call in hw/ide/macio.c accordingly.
Without this fix qemu-system-ppc segfaults when issuing an IDE trim command on
any of the PPC Mac machines (easily triggered by running the Debian installer).
Anton Nefedov [Tue, 27 Mar 2018 04:38:00 +0000 (00:38 -0400)]
ide: fix invalid TRIM range abortion for macio
commit 947858b0 "ide: abort TRIM operation for invalid range"
is incorrect for macio; just ide_dma_error() without doing a callback
is not enough for that errorpath.
Instead, pass -EINVAL to the callback and handle it there
(see related motivation for read/write in 58ac32113).
It will however catch possible EINVAL from the block layer too.
Max Filippov [Fri, 23 Mar 2018 12:56:19 +0000 (05:56 -0700)]
target/xtensa: fix timers test
The value of CCOUNT special register is calculated as time elapsed
since CCOUNT == 0 multiplied by the core frequency. In icount mode time
increment between consecutive instructions that don't involve time
warps is constant, but unless the result of multiplication of this
constant by the core frequency is a whole number the CCOUNT increment
between these instructions may not be constant. E.g. with icount=7 each
instruction takes 128ns, with core clock of 10MHz CCOUNT values for
consecutive instructions are:
I.e.the CCOUNT increments depend on the absolute time. This results in
varying CCOUNT differences for consecutive instructions in tests that
involve time warps and don't set CCOUNT explicitly.
Change frequency of the core used in tests so that clock cycle takes
exactly 64ns. Change icount power used in tests to 6, so that each
instruction takes exactly 1 clock cycle. With these changes CCOUNT
increments only depend on the number of executed instructions and that's
what timer tests expect, so they work correctly.
yuchenlin [Thu, 22 Mar 2018 13:33:37 +0000 (21:33 +0800)]
vmdk: return ERROR when cluster sector is larger than vmdk limitation
VMDK has a hard limitation of extent size, which is due to the size of grain
table entry is 32 bits. It means it can only point to a grain located at
offset = 2^32. To avoid writing the user data beyond limitation and record a useless offset
in grain table. We should return ERROR here.
qcow2: fix bitmaps loading when bitmaps already exist
On reopen with existing bitmaps, instead of loading bitmaps, lets
reopen them if needed. This also fixes bitmaps migration through
shared storage.
Consider the case. Persistent bitmaps are stored on bdrv_inactivate.
Then, on destination process_incoming_migration_bh() calls
bdrv_invalidate_cache_all() which leads to
qcow2_load_autoloading_dirty_bitmaps() which fails if bitmaps are
already loaded on destination start.
Add version of qcow2_reopen_bitmaps_rw, which do the same work but
also return a hint about was header updated or not. This will be
used in the following fix for bitmaps reloading after migration.
Peter Maydell [Mon, 26 Mar 2018 16:13:31 +0000 (17:13 +0100)]
Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging
Block layer patches
# gpg: Signature made Mon 26 Mar 2018 15:33:01 BST
# gpg: using RSA key 7F09B272C88F2FD6
# gpg: Good signature from "Kevin Wolf <[email protected]>"
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74 56FE 7F09 B272 C88F 2FD6
* remotes/kevin/tags/for-upstream:
qemu-iotests: Test vhdx image creation with QMP
vhdx: Check for 4 GB maximum log size on creation
vhdx: Don't use error_setg_errno() with constant errno
vhdx: Require power-of-two block size on create
qemu-iotests: Test parallels image creation with QMP
parallels: Check maximum cluster size on create
qemu-iotests: Test invalid resize on luks
luks: Turn another invalid assertion into check
qemu-iotests: Enable 025 for luks
qemu-iotests: Test vdi image creation with QMP
vdi: Fix build with CONFIG_VDI_DEBUG
vdi: Change 'static' create option to 'preallocation' in QMP
qcow2: Reset free_cluster_index when allocating a new refcount block
include/block/block_int: Document protocol related functions
block/blkreplay: Remove protocol-related fields
block/throttle: Remove protocol-related fields
block/quorum: Remove protocol-related fields
block/replication: Remove protocol_name field
iotests: 163 is not quick
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