Commit Graph

87710 Commits

Author SHA1 Message Date
Bruno Larsen (billionai)
a3f5c31539 target/ppc: moved ppc_store_lpcr and ppc_store_msr to cpu.c
These functions are used in hw/ppc logic, during machine startup, which
means it must be compiled when --disable-tcg is selected, and so it has
been moved into a common code file

Signed-off-by: Bruno Larsen (billionai) <bruno.larsen@eldorado.org.br>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Message-Id: <20210521201759.85475-3-bruno.larsen@eldorado.org.br>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-06-03 13:22:06 +10:00
Bruno Larsen (billionai)
dbf2e70a30 target/ppc: cleaned error_report from ppc_store_sdr1
Changed how the function ppc_store_sdr1, from error_report(...) to
qemu_log_mask(LOG_GUEST_ERROR, ...).

Signed-off-by: Bruno Larsen (billionai) <bruno.larsen@eldorado.org.br>
Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210521201759.85475-2-bruno.larsen@eldorado.org.br>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-06-03 13:22:06 +10:00
Peter Maydell
8e6dad2028 Block layer patches
- NBD server: Fix crashes related to switching between AioContexts
 - file-posix: Workaround for discard/write_zeroes on buggy filesystems
 - Follow-up fixes for the reopen vs. permission changes
 - quorum: Fix error handling for flush
 - block-copy: Refactor copy_range handling
 - docs: Describe how to use 'null-co' block driver
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Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging

Block layer patches

- NBD server: Fix crashes related to switching between AioContexts
- file-posix: Workaround for discard/write_zeroes on buggy filesystems
- Follow-up fixes for the reopen vs. permission changes
- quorum: Fix error handling for flush
- block-copy: Refactor copy_range handling
- docs: Describe how to use 'null-co' block driver

# gpg: Signature made Wed 02 Jun 2021 14:44:15 BST
# gpg:                using RSA key DC3DEB159A9AF95D3D7456FE7F09B272C88F2FD6
# gpg:                issuer "kwolf@redhat.com"
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>" [full]
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74  56FE 7F09 B272 C88F 2FD6

* remotes/kevin/tags/for-upstream:
  docs/secure-coding-practices: Describe how to use 'null-co' block driver
  block-copy: refactor copy_range handling
  block-copy: fix block_copy_task_entry() progress update
  nbd/server: Use drained block ops to quiesce the server
  block-backend: add drained_poll
  block: improve permission conflict error message
  block: simplify bdrv_child_user_desc()
  block/vvfat: inherit child_vvfat_qcow from child_of_bds
  block: improve bdrv_child_get_parent_desc()
  block-backend: improve blk_root_get_parent_desc()
  block: document child argument of bdrv_attach_child_common()
  block/file-posix: Try other fallbacks after invalid FALLOC_FL_ZERO_RANGE
  block/file-posix: Fix problem with fallocate(PUNCH_HOLE) on GPFS
  block: drop BlockBackendRootState::read_only
  block: drop BlockDriverState::read_only
  block: consistently use bdrv_is_read_only()
  block/vvfat: fix vvfat_child_perm crash
  block/vvfat: child_vvfat_qcow: add .get_parent_aio_context, fix crash
  qemu-io-cmds: assert that we don't have .perm requested in no-blk case
  block/quorum: Provide .bdrv_co_flush instead of .bdrv_co_flush_to_disk

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-06-02 19:34:03 +01:00
Peter Maydell
8c345b3e6a * Update the references to some doc files (use *.rst instead of *.txt)
* Bump minimum versions of some requirements after removing CentOS 7 support
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Merge remote-tracking branch 'remotes/thuth-gitlab/tags/pull-request-2021-06-02' into staging

* Update the references to some doc files (use *.rst instead of *.txt)
* Bump minimum versions of some requirements after removing CentOS 7 support

# gpg: Signature made Wed 02 Jun 2021 08:12:18 BST
# gpg:                using RSA key 27B88847EEE0250118F3EAB92ED9D774FE702DB5
# gpg:                issuer "thuth@redhat.com"
# gpg: Good signature from "Thomas Huth <th.huth@gmx.de>" [full]
# gpg:                 aka "Thomas Huth <thuth@redhat.com>" [full]
# gpg:                 aka "Thomas Huth <huth@tuxfamily.org>" [full]
# gpg:                 aka "Thomas Huth <th.huth@posteo.de>" [unknown]
# Primary key fingerprint: 27B8 8847 EEE0 2501 18F3  EAB9 2ED9 D774 FE70 2DB5

* remotes/thuth-gitlab/tags/pull-request-2021-06-02:
  configure: bump min required CLang to 6.0 / XCode 10.0
  configure: bump min required GCC to 7.5.0
  configure: bump min required glib version to 2.56
  tests/docker: drop CentOS 7 container
  tests/vm: convert centos VM recipe to CentOS 8
  crypto: drop used conditional check
  crypto: bump min gnutls to 3.5.18, dropping RHEL-7 support
  crypto: bump min gcrypt to 1.8.0, dropping RHEL-7 support
  crypto: drop back compatibility typedefs for nettle
  crypto: bump min nettle to 3.4, dropping RHEL-7 support
  patchew: move quick build job from CentOS 7 to CentOS 8 container
  block/ssh: Bump minimum libssh version to 0.8.7
  docs: fix references to docs/devel/s390-dasd-ipl.rst
  docs: fix references to docs/specs/tpm.rst
  docs: fix references to docs/devel/build-system.rst
  docs: fix references to docs/devel/atomics.rst
  docs: fix references to docs/devel/tracing.rst

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-06-02 17:08:11 +01:00
Philippe Mathieu-Daudé
b317006a3f docs/secure-coding-practices: Describe how to use 'null-co' block driver
Document that security reports must use 'null-co,read-zeroes=on'
because otherwise the memory is left uninitialized (which is an
on-purpose performance feature).

Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210601162548.2076631-1-philmd@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2021-06-02 14:29:14 +02:00
Vladimir Sementsov-Ogievskiy
bed9523471 block-copy: refactor copy_range handling
Currently we update s->use_copy_range and s->copy_size in
block_copy_do_copy().

It's not very good:

1. block_copy_do_copy() is intended to be a simple function, that wraps
bdrv_co_<io> functions for need of block copy. That's why we don't pass
BlockCopyTask into it. So, block_copy_do_copy() is bad place for
manipulation with generic state of block-copy process

2. We are going to make block-copy thread-safe. So, it's good to move
manipulation with state of block-copy to the places where we'll need
critical sections anyway, to not introduce extra synchronization
primitives in block_copy_do_copy().

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210528141628.44287-3-vsementsov@virtuozzo.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2021-06-02 14:23:20 +02:00
Vladimir Sementsov-Ogievskiy
8146b357d0 block-copy: fix block_copy_task_entry() progress update
Don't report successful progress on failure, when call_state->ret is
set.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210528141628.44287-2-vsementsov@virtuozzo.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2021-06-02 14:23:20 +02:00
Sergio Lopez
fd6afc501a nbd/server: Use drained block ops to quiesce the server
Before switching between AioContexts we need to make sure that we're
fully quiesced ("nb_requests == 0" for every client) when entering the
drained section.

To do this, we set "quiescing = true" for every client on
".drained_begin" to prevent new coroutines from being created, and
check if "nb_requests == 0" on ".drained_poll". Finally, once we're
exiting the drained section, on ".drained_end" we set "quiescing =
false" and call "nbd_client_receive_next_request()" to resume the
processing of new requests.

With these changes, "blk_aio_attach()" and "blk_aio_detach()" can be
reverted to be as simple as they were before f148ae7d36.

RHBZ: https://bugzilla.redhat.com/show_bug.cgi?id=1960137
Suggested-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Sergio Lopez <slp@redhat.com>
Message-Id: <20210602060552.17433-3-slp@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2021-06-02 14:23:20 +02:00
Sergio Lopez
095cc4d0f6 block-backend: add drained_poll
Allow block backends to poll their devices/users to check if they have
been quiesced when entering a drained section.

This will be used in the next patch to wait for the NBD server to be
completely quiesced.

Suggested-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Sergio Lopez <slp@redhat.com>
Message-Id: <20210602060552.17433-2-slp@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2021-06-02 14:23:20 +02:00
Vladimir Sementsov-Ogievskiy
30ebb9aa92 block: improve permission conflict error message
Now permissions are updated as follows:
 1. do graph modifications ignoring permissions
 2. do permission update

 (of course, we rollback [1] if [2] fails)

So, on stage [2] we can't say which users are "old" and which are
"new" and exist only since [1]. And current error message is a bit
outdated. Let's improve it, to make everything clean.

While being here, add also a comment and some good assertions.

iotests 283, 307, qsd-jobs outputs are updated.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210601075218.79249-7-vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2021-06-02 14:23:20 +02:00
Vladimir Sementsov-Ogievskiy
da261b69ae block: simplify bdrv_child_user_desc()
All child classes have this callback. So, drop unreachable code.

Still add an assertion to bdrv_attach_child_common(), to early detect
bad classes.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210601075218.79249-6-vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2021-06-02 14:23:20 +02:00
Vladimir Sementsov-Ogievskiy
8081f064e4 block/vvfat: inherit child_vvfat_qcow from child_of_bds
Recently we've fixed a crash by adding .get_parent_aio_context handler
to child_vvfat_qcow. Now we want it to support .get_parent_desc as
well. child_vvfat_qcow wants to implement own .inherit_options, it's
not bad. But omitting all other handlers is a bad idea. Let's inherit
the class from child_of_bds instead, similar to chain_child_class and
detach_by_driver_cb_class in test-bdrv-drain.c.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210601075218.79249-5-vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2021-06-02 14:23:20 +02:00
Vladimir Sementsov-Ogievskiy
2c0a3acb95 block: improve bdrv_child_get_parent_desc()
We have different types of parents: block nodes, block backends and
jobs. So, it makes sense to specify type together with name.

Next, this handler us used to compose an error message about permission
conflict. And permission conflict occurs in a specific place of block
graph. We shouldn't report name of parent device (as it refers another
place in block graph), but exactly and only the name of the node. So,
use bdrv_get_node_name() directly.

iotest 283 output is updated.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Message-Id: <20210601075218.79249-4-vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2021-06-02 14:23:20 +02:00
Vladimir Sementsov-Ogievskiy
fd240a184b block-backend: improve blk_root_get_parent_desc()
We have different types of parents: block nodes, block backends and
jobs. So, it makes sense to specify type together with name.

While being here also use g_autofree.

iotest 307 output is updated.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Message-Id: <20210601075218.79249-3-vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2021-06-02 14:23:20 +02:00
Vladimir Sementsov-Ogievskiy
f8d2ad7881 block: document child argument of bdrv_attach_child_common()
The logic around **child is not obvious: this reference is used not
only to return resulting child, but also to rollback NULL value on
transaction abort.

So, let's add documentation and some assertions.

While being here, drop extra declaration of bdrv_attach_child_noperm().

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210601075218.79249-2-vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2021-06-02 14:23:20 +02:00
Thomas Huth
fa95e9fbab block/file-posix: Try other fallbacks after invalid FALLOC_FL_ZERO_RANGE
If fallocate(... FALLOC_FL_ZERO_RANGE ...) returns EINVAL, it's likely
an indication that the file system is buggy and does not implement
unaligned accesses right. We still might be lucky with the other
fallback fallocate() calls later in this function, though, so we should
not return immediately and try the others first.
Since FALLOC_FL_ZERO_RANGE could also return EINVAL if the file descriptor
is not a regular file, we ignore this filesystem bug silently, without
printing an error message for the user.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20210527172020.847617-3-thuth@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2021-06-02 14:23:20 +02:00
Thomas Huth
73ebf29729 block/file-posix: Fix problem with fallocate(PUNCH_HOLE) on GPFS
A customer reported that running

 qemu-img convert -t none -O qcow2 -f qcow2 input.qcow2 output.qcow2

fails for them with the following error message when the images are
stored on a GPFS file system :

 qemu-img: error while writing sector 0: Invalid argument

After analyzing the strace output, it seems like the problem is in
handle_aiocb_write_zeroes(): The call to fallocate(FALLOC_FL_PUNCH_HOLE)
returns EINVAL, which can apparently happen if the file system has
a different idea of the granularity of the operation. It's arguably
a bug in GPFS, since the PUNCH_HOLE mode should not result in EINVAL
according to the man-page of fallocate(), but the file system is out
there in production and so we have to deal with it. In commit 294682cc3a
("block: workaround for unaligned byte range in fallocate()") we also
already applied the a work-around for the same problem to the earlier
fallocate(FALLOC_FL_ZERO_RANGE) call, so do it now similar with the
PUNCH_HOLE call. But instead of silently catching and returning
-ENOTSUP (which causes the caller to fall back to writing zeroes),
let's rather inform the user once about the buggy file system and
try the other fallback instead.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20210527172020.847617-2-thuth@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2021-06-02 14:23:20 +02:00
Vladimir Sementsov-Ogievskiy
260242a833 block: drop BlockBackendRootState::read_only
Instead of keeping additional boolean field, let's store the
information in BDRV_O_RDWR bit of BlockBackendRootState::open_flags.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210527154056.70294-4-vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2021-06-02 14:23:20 +02:00
Vladimir Sementsov-Ogievskiy
975da07374 block: drop BlockDriverState::read_only
This variable is just a cache for !(bs->open_flags & BDRV_O_RDWR),
which we have to synchronize everywhere. Let's just drop it and
consistently use bdrv_is_read_only().

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210527154056.70294-3-vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2021-06-02 14:23:20 +02:00
Vladimir Sementsov-Ogievskiy
307261b243 block: consistently use bdrv_is_read_only()
It's better to use accessor function instead of bs->read_only directly.
In some places use bdrv_is_writable() instead of
checking both BDRV_O_RDWR set and BDRV_O_INACTIVE not set.

In bdrv_open_common() it's a bit strange to add one more variable, but
we are going to drop bs->read_only in the next patch, so new ro local
variable substitutes it here.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210527154056.70294-2-vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2021-06-02 14:23:20 +02:00
Vladimir Sementsov-Ogievskiy
39df2c6d57 block/vvfat: fix vvfat_child_perm crash
It's wrong to rely on s->qcow in vvfat_child_perm, as on permission
update during bdrv_open_child() call this field is not set yet.

Still prior to aa5a04c7db, it didn't
crash, as bdrv_open_child passed NULL as child to bdrv_child_perm(),
and NULL was equal to NULL in assertion (still, it was bad guarantee
for child being s->qcow, not backing :).

Since aa5a04c7db
"add bdrv_attach_child_noperm" bdrv_refresh_perms called on parent node
when attaching child, and new correct child pointer is passed to
.bdrv_child_perm. Still, s->qcow is NULL at the moment. Let's rely only
on role instead.

Without that fix,
./build/qemu-system-x86_64 -usb -device usb-storage,drive=fat16 \
    -drive \
    file=fat:rw:fat-type=16:"<path of a host folder>",id=fat16,format=raw,if=none

crashes:
(gdb) bt
0  raise () at /lib64/libc.so.6
1  abort () at /lib64/libc.so.6
2  _nl_load_domain.cold () at /lib64/libc.so.6
3  annobin_assert.c_end () at /lib64/libc.so.6
4  vvfat_child_perm (bs=0x559186f3d690, c=0x559186f1ed20, role=3,
                     reopen_queue=0x0, perm=0, shared=31,
                     nperm=0x7ffe56f28298, nshared=0x7ffe56f282a0) at
    ../block/vvfat.c:3214
5  bdrv_child_perm (bs=0x559186f3d690, child_bs=0x559186f60190,
                    c=0x559186f1ed20, role=3, reopen_queue=0x0,
                    parent_perm=0, parent_shared=31,
                    nperm=0x7ffe56f28298, nshared=0x7ffe56f282a0)
    at ../block.c:2094
6  bdrv_node_refresh_perm (bs=0x559186f3d690, q=0x0,
                           tran=0x559186f65850, errp=0x7ffe56f28530) at
    ../block.c:2336
7  bdrv_list_refresh_perms (list=0x559186db5b90 = {...}, q=0x0,
                            tran=0x559186f65850, errp=0x7ffe56f28530)
    at ../block.c:2358
8  bdrv_refresh_perms (bs=0x559186f3d690, errp=0x7ffe56f28530) at
    ../block.c:2419
9  bdrv_attach_child
    (parent_bs=0x559186f3d690, child_bs=0x559186f60190,
     child_name=0x559184d83e3d "write-target",
     child_class=0x5591852f3b00 <child_vvfat_qcow>, child_role=3,
     errp=0x7ffe56f28530) at ../block.c:2959
10 bdrv_open_child
    (filename=0x559186f5cb80 "/var/tmp/vl.7WYmFU",
     options=0x559186f66c20, bdref_key=0x559184d83e3d "write-target",
     parent=0x559186f3d690, child_class=0x5591852f3b00
     <child_vvfat_qcow>, child_role=3, allow_none=false,
     errp=0x7ffe56f28530) at ../block.c:3351
11 enable_write_target (bs=0x559186f3d690, errp=0x7ffe56f28530) at
    ../block/vvfat.c:3177
12 vvfat_open (bs=0x559186f3d690, options=0x559186f42db0, flags=155650,
               errp=0x7ffe56f28530) at ../block/vvfat.c:1236
13 bdrv_open_driver (bs=0x559186f3d690, drv=0x5591853d97e0
                     <bdrv_vvfat>, node_name=0x0,
                     options=0x559186f42db0, open_flags=155650,
                     errp=0x7ffe56f28640) at ../block.c:1557
14 bdrv_open_common (bs=0x559186f3d690, file=0x0,
                     options=0x559186f42db0, errp=0x7ffe56f28640) at
    ../block.c:1833
...

(gdb) fr 4
 #4  vvfat_child_perm (bs=0x559186f3d690, c=0x559186f1ed20, role=3,
                      reopen_queue=0x0, perm=0, shared=31,
                      nperm=0x7ffe56f28298, nshared=0x7ffe56f282a0) at
    ../block/vvfat.c:3214
3214        assert(c == s->qcow || (role & BDRV_CHILD_COW));
(gdb) p role
 $1 = 3   # BDRV_CHILD_DATA | BDRV_CHILD_METADATA
(gdb) p *c
 $2 = {bs = 0x559186f60190, name = 0x559186f669d0 "write-target", klass
     = 0x5591852f3b00 <child_vvfat_qcow>, role = 3, opaque =
         0x559186f3d690, perm = 3, shared_perm = 4, frozen = false,
         parent_quiesce_counter = 0, next = {le_next = 0x0, le_prev =
             0x559186f41818}, next_parent = {le_next = 0x0, le_prev =
                 0x559186f64320}}
(gdb) p s->qcow
 $3 = (BdrvChild *) 0x0

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210524101257.119377-3-vsementsov@virtuozzo.com>
Tested-by: John Arbuckle <programmingkidx@gmail.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2021-06-02 14:23:20 +02:00
Vladimir Sementsov-Ogievskiy
fb62b58896 block/vvfat: child_vvfat_qcow: add .get_parent_aio_context, fix crash
Commit 3ca1f32257
"block: BdrvChildClass: add .get_parent_aio_context handler" introduced
new handler and commit 228ca37e12
"block: drop ctx argument from bdrv_root_attach_child" made a generic
use of it. But 3ca1f32257 didn't update
child_vvfat_qcow. Fix that.

Before that fix the command

./build/qemu-system-x86_64 -usb -device usb-storage,drive=fat16 \
  -drive file=fat:rw:fat-type=16:"<path of a host folder>",id=fat16,format=raw,if=none

crashes:

1  bdrv_child_get_parent_aio_context (c=0x559d62426d20)
    at ../block.c:1440
2  bdrv_attach_child_common
    (child_bs=0x559d62468190, child_name=0x559d606f9e3d "write-target",
     child_class=0x559d60c58d20 <child_vvfat_qcow>, child_role=3,
     perm=3, shared_perm=4, opaque=0x559d62445690,
     child=0x7ffc74c2acc8, tran=0x559d6246ddd0, errp=0x7ffc74c2ae60)
    at ../block.c:2795
3  bdrv_attach_child_noperm
    (parent_bs=0x559d62445690, child_bs=0x559d62468190,
     child_name=0x559d606f9e3d "write-target",
     child_class=0x559d60c58d20 <child_vvfat_qcow>, child_role=3,
     child=0x7ffc74c2acc8, tran=0x559d6246ddd0, errp=0x7ffc74c2ae60) at
    ../block.c:2855
4  bdrv_attach_child
    (parent_bs=0x559d62445690, child_bs=0x559d62468190,
     child_name=0x559d606f9e3d "write-target",
     child_class=0x559d60c58d20 <child_vvfat_qcow>, child_role=3,
     errp=0x7ffc74c2ae60) at ../block.c:2953
5  bdrv_open_child
    (filename=0x559d62464b80 "/var/tmp/vl.h3TIS4",
     options=0x559d6246ec20, bdref_key=0x559d606f9e3d "write-target",
     parent=0x559d62445690, child_class=0x559d60c58d20
     <child_vvfat_qcow>, child_role=3, allow_none=false,
     errp=0x7ffc74c2ae60) at ../block.c:3351
6  enable_write_target (bs=0x559d62445690, errp=0x7ffc74c2ae60) at
   ../block/vvfat.c:3176
7  vvfat_open (bs=0x559d62445690, options=0x559d6244adb0, flags=155650,
               errp=0x7ffc74c2ae60) at ../block/vvfat.c:1236
8  bdrv_open_driver (bs=0x559d62445690, drv=0x559d60d4f7e0
                     <bdrv_vvfat>, node_name=0x0,
                     options=0x559d6244adb0, open_flags=155650,
                     errp=0x7ffc74c2af70) at ../block.c:1557
9  bdrv_open_common (bs=0x559d62445690, file=0x0,
                     options=0x559d6244adb0, errp=0x7ffc74c2af70) at
...

(gdb) fr 1
 #1  0x0000559d603ea3bf in bdrv_child_get_parent_aio_context
     (c=0x559d62426d20) at ../block.c:1440
1440        return c->klass->get_parent_aio_context(c);
 (gdb) p c->klass
$1 = (const BdrvChildClass *) 0x559d60c58d20 <child_vvfat_qcow>
 (gdb) p c->klass->get_parent_aio_context
$2 = (AioContext *(*)(BdrvChild *)) 0x0

Fixes: 3ca1f32257
Fixes: 228ca37e12
Reported-by: John Arbuckle <programmingkidx@gmail.com>
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210524101257.119377-2-vsementsov@virtuozzo.com>
Tested-by: John Arbuckle <programmingkidx@gmail.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2021-06-02 14:23:20 +02:00
Vladimir Sementsov-Ogievskiy
8eaf10187a qemu-io-cmds: assert that we don't have .perm requested in no-blk case
Coverity thinks blk may be NULL. It's a false-positive, as described in
a new comment.

Fixes: Coverity CID 1453194
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210519090532.3753-1-vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2021-06-02 14:23:20 +02:00
Lukas Straub
5529b02da2 block/quorum: Provide .bdrv_co_flush instead of .bdrv_co_flush_to_disk
The quorum block driver uses a custom flush callback to handle the
case when some children return io errors. In that case it still
returns success if enough children are healthy.
However, it provides it as the .bdrv_co_flush_to_disk callback, not
as .bdrv_co_flush. This causes the block layer to do it's own
generic flushing for the children instead, which doesn't handle
errors properly.

Fix this by providing .bdrv_co_flush instead of
.bdrv_co_flush_to_disk so the block layer uses the custom flush
callback.

Signed-off-by: Lukas Straub <lukasstraub2@web.de>
Reported-by: Minghao Yuan <meeho@qq.com>
Message-Id: <20210518134214.11ccf05f@gecko.fritz.box>
Tested-by: Zhang Chen <chen.zhang@intel.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2021-06-02 14:23:20 +02:00
Peter Maydell
49ba51adec Pull request
V2:
  - Squashed in fixup for
    'Python: add utility function for retrieving port redirection'
  - Rebased on today's upstream
 
 CI here:
 https://gitlab.com/jsnow/qemu/-/pipelines/313202814
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Merge remote-tracking branch 'remotes/jsnow-gitlab/tags/python-pull-request' into staging

Pull request

V2:
 - Squashed in fixup for
   'Python: add utility function for retrieving port redirection'
 - Rebased on today's upstream

CI here:
https://gitlab.com/jsnow/qemu/-/pipelines/313202814

# gpg: Signature made Wed 02 Jun 2021 00:29:55 BST
# gpg:                using RSA key F9B7ABDBBCACDF95BE76CBD07DEF8106AAFC390E
# gpg: Good signature from "John Snow (John Huston) <jsnow@redhat.com>" [full]
# Primary key fingerprint: FAEB 9711 A12C F475 812F  18F2 88A9 064D 1835 61EB
#      Subkey fingerprint: F9B7 ABDB BCAC DF95 BE76  CBD0 7DEF 8106 AAFC 390E

* remotes/jsnow-gitlab/tags/python-pull-request: (44 commits)
  gitlab: add python linters to CI
  python: add tox support
  python: add .gitignore
  python: add Makefile for some common tasks
  python: add avocado-framework and tests
  python: add devel package requirements to setuptools
  python/qemu: add qemu package itself to pipenv
  python/qemu: add isort to pipenv
  python: move .isort.cfg into setup.cfg
  python: add mypy to pipenv
  python: move mypy.ini into setup.cfg
  python: Add flake8 to pipenv
  python: add excluded dirs to flake8 config
  python: move flake8 config to setup.cfg
  python: add pylint to pipenv
  python: move pylintrc into setup.cfg
  python: add pylint import exceptions
  python: Add pipenv support
  python: add MANIFEST.in
  python: add directory structure README.rst files
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-06-02 11:42:23 +01:00
Daniel P. Berrangé
2a85a08c99 configure: bump min required CLang to 6.0 / XCode 10.0
Several distros have been dropped since the last time we bumped the
minimum required CLang version.

Per repology, currently shipping versions are:

             RHEL-8: 10.0.1
      Debian Buster: 7.0.1
 openSUSE Leap 15.2: 9.0.1
   Ubuntu LTS 18.04: 6.0.0
   Ubuntu LTS 20.04: 10.0.0
         FreeBSD 12: 8.0.1
          Fedora 33: 11.0.0
          Fedora 34: 11.1.0

With this list Ubuntu LTS 18.04 is the constraint at 6.0.0

An LLVM version of 6.0.0 corresponds to macOS XCode version of 10.0
which dates from Sept 2018.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20210514120415.1368922-13-berrange@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2021-06-02 09:11:32 +02:00
Daniel P. Berrangé
56208a0d47 configure: bump min required GCC to 7.5.0
Several distros have been dropped since the last time we bumped the
minimum required GCC version.

Per repology, currently shipping versions are:

             RHEL-8: 8.3.1
      Debian Buster: 8.3.0
 openSUSE Leap 15.2: 7.5.0
   Ubuntu LTS 18.04: 7.5.0
   Ubuntu LTS 20.04: 9.3.0
            FreeBSD: 10.3.0
          Fedora 33: 9.2.0
          Fedora 34: 11.0.1
            OpenBSD: 8.4.0
     macOS HomeBrew: 11.1.0

With this list Ubuntu LTS 18.04 / openSUSE Leap 15.2 are the
constraint at 7.5.0

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20210514120415.1368922-12-berrange@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2021-06-02 09:11:32 +02:00
Daniel P. Berrangé
b4c6036faa configure: bump min required glib version to 2.56
The glib version was not previously constrained by RHEL-7 since it
rebases fairly often. Instead SLES 12 and Ubuntu 16.04 were the
constraints in 00f2cfbbec. Both of
these are old enough that they are outside our platform support
matrix now.

Per repology, current shipping versions are:

             RHEL-8: 2.56.4
      Debian Buster: 2.58.3
 openSUSE Leap 15.2: 2.62.6
   Ubuntu LTS 18.04: 2.56.4
   Ubuntu LTS 20.04: 2.64.6
            FreeBSD: 2.66.7
          Fedora 33: 2.66.8
          Fedora 34: 2.68.1
            OpenBSD: 2.68.1
     macOS HomeBrew: 2.68.1

Thus Ubuntu LTS 18.04 / RHEL-8 are the constraint for GLib version
at 2.56

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20210514120415.1368922-11-berrange@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2021-06-02 09:11:32 +02:00
Daniel P. Berrangé
6f0748a048 tests/docker: drop CentOS 7 container
It has been over two years since RHEL-8 was released, and thus per the
platform build policy, we no longer need to support RHEL-7 as a build
target.

Reviewed-by: Thomas Huth <thuth@redhat.com>
Acked-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20210514120415.1368922-10-berrange@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2021-06-02 09:11:32 +02:00
Daniel P. Berrangé
fb1fa97c69 tests/vm: convert centos VM recipe to CentOS 8
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20210514120415.1368922-9-berrange@redhat.com>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2021-06-02 09:11:05 +02:00
Daniel P. Berrangé
fd4eddc3a8 crypto: drop used conditional check
The condition being tested has never been set since the day the code was
first introduced.

Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20210514120415.1368922-8-berrange@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2021-06-02 07:10:45 +02:00
Daniel P. Berrangé
d4c7ee330c crypto: bump min gnutls to 3.5.18, dropping RHEL-7 support
It has been over two years since RHEL-8 was released, and thus per the
platform build policy, we no longer need to support RHEL-7 as a build
target. This lets us increment the minimum required gnutls version

Per repology, current shipping versions are:

             RHEL-8: 3.6.14
      Debian Buster: 3.6.7
 openSUSE Leap 15.2: 3.6.7
   Ubuntu LTS 18.04: 3.5.18
   Ubuntu LTS 20.04: 3.6.13
            FreeBSD: 3.6.15
          Fedora 33: 3.6.16
          Fedora 34: 3.7.1
            OpenBSD: 3.6.15
     macOS HomeBrew: 3.6.15

Ubuntu LTS 18.04 has the oldest version and so 3.5.18 is the new minimum.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20210514120415.1368922-7-berrange@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
[thuth: rebased to use .gitlab-ci.d/buildtest.yml]
Signed-off-by: Thomas Huth <thuth@redhat.com>
2021-06-02 07:10:35 +02:00
Daniel P. Berrangé
b33a84632a crypto: bump min gcrypt to 1.8.0, dropping RHEL-7 support
It has been over two years since RHEL-8 was released, and thus per the
platform build policy, we no longer need to support RHEL-7 as a build
target. This lets us increment the minimum required gcrypt version and
assume that HMAC is always supported

Per repology, current shipping versions are:

             RHEL-8: 1.8.5
      Debian Buster: 1.8.4
 openSUSE Leap 15.2: 1.8.2
   Ubuntu LTS 18.04: 1.8.1
   Ubuntu LTS 20.04: 1.8.5
            FreeBSD: 1.9.2
          Fedora 33: 1.8.6
          Fedora 34: 1.9.3
            OpenBSD: 1.9.3
     macOS HomeBrew: 1.9.3

Ubuntu LTS 18.04 has the oldest version and so 1.8.0 is the new minimum.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20210514120415.1368922-6-berrange@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
[thuth: rebased to use .gitlab-ci.d/buildtest.yml]
Signed-off-by: Thomas Huth <thuth@redhat.com>
2021-06-02 07:10:18 +02:00
Daniel P. Berrangé
115e4b7003 crypto: drop back compatibility typedefs for nettle
Now that we only support modern nettle, we don't need to have local
typedefs to mask the real nettle types.

Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20210514120415.1368922-5-berrange@redhat.com>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2021-06-02 07:04:55 +02:00
Daniel P. Berrangé
20ba7a4a34 crypto: bump min nettle to 3.4, dropping RHEL-7 support
It has been over two years since RHEL-8 was released, and thus per the
platform build policy, we no longer need to support RHEL-7 as a build
target. This lets us increment the minimum required nettle version and
drop a lot of backwards compatibility code for 2.x series of nettle.

Per repology, current shipping versions are:

             RHEL-8: 3.4.1
      Debian Buster: 3.4.1
 openSUSE Leap 15.2: 3.4.1
   Ubuntu LTS 18.04: 3.4
   Ubuntu LTS 20.04: 3.5.1
            FreeBSD: 3.7.2
          Fedora 33: 3.5.1
          Fedora 34: 3.7.2
            OpenBSD: 3.7.2
     macOS HomeBrew: 3.7.2

Ubuntu LTS 18.04 has the oldest version and so 3.4 is the new minimum.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20210514120415.1368922-4-berrange@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
[thuth: rebased to use .gitlab-ci.d/buildtest.yml]
Signed-off-by: Thomas Huth <thuth@redhat.com>
2021-06-02 07:03:25 +02:00
Daniel P. Berrangé
f4d4be8212 patchew: move quick build job from CentOS 7 to CentOS 8 container
It has been over two years since RHEL-8 was released, and thus per the
platform build policy, we no longer need to support RHEL-7 as a build
target.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20210514120415.1368922-3-berrange@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2021-06-02 06:58:46 +02:00
Thomas Huth
b4c10fc6fe block/ssh: Bump minimum libssh version to 0.8.7
It has been over two years since RHEL-8 was released, and thus per the
platform build policy, we no longer need to support RHEL-7 as a build
target. So from the RHEL-7 perspective, we do not have to support
libssh v0.7 anymore now.

Let's look at the versions from other distributions and operating
systems - according to repology.org, current shipping versions are:

             RHEL-8: 0.9.4
      Debian Buster: 0.8.7
 openSUSE Leap 15.2: 0.8.7
   Ubuntu LTS 18.04: 0.8.0 *
   Ubuntu LTS 20.04: 0.9.3
            FreeBSD: 0.9.5
          Fedora 33: 0.9.5
          Fedora 34: 0.9.5
            OpenBSD: 0.9.5
     macOS HomeBrew: 0.9.5
         HaikuPorts: 0.9.5

* The version of libssh in Ubuntu 18.04 claims to be 0.8.0 from the
name of the package, but in reality it is a 0.7 patched up as a
Frankenstein monster with patches from the 0.8 development branch.
This gave us some headaches in the past already and so it never worked
with QEMU. All attempts to get it supported have failed in the past,
patches for QEMU have never been merged and a request to Ubuntu to
fix it in their 18.04 distro has been ignored:

 https://bugs.launchpad.net/ubuntu/+source/libssh/+bug/1847514

Thus we really should ignore the libssh in Ubuntu 18.04 in QEMU, too.

Fix it by bumping the minimum libssh version to something that is
greater than 0.8.0 now. Debian Buster and openSUSE Leap have the
oldest version and so 0.8.7 is the new minimum.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Tested-by: Richard W.M. Jones <rjones@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Acked-by: Richard W.M. Jones <rjones@redhat.com>
Message-Id: <20210519155859.344569-1-thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2021-06-02 06:51:09 +02:00
Stefano Garzarella
13cb12f619 docs: fix references to docs/devel/s390-dasd-ipl.rst
Commit cc3d15a5ea ("docs: rstfy s390 dasd ipl documentation")
converted docs/devel/s390-dasd-ipl.txt to docs/devel/s390-dasd-ipl.rst.

We still have several references to the old file, so let's fix them
with the following command:

  sed -i s/s390-dasd-ipl.txt/s390-dasd-ipl.rst/ \
      $(git grep -l docs/devel/s390-dasd-ipl.txt)

Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Acked-by: Cornelia Huck <cohuck@redhat.com>
Message-Id: <20210517151702.109066-6-sgarzare@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2021-06-02 06:51:09 +02:00
Stefano Garzarella
773c1f1e94 docs: fix references to docs/specs/tpm.rst
Commit 6e8a3ff6ed ("docs/specs/tpm: reST-ify TPM documentation")
converted docs/specs/tpm.txt to docs/specs/tpm.rst.

We still have several references to the old file, so let's fix them
with the following command:

  sed -i s/tpm.txt/tpm.rst/ $(git grep -l docs/specs/tpm.txt)

Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210517151702.109066-5-sgarzare@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2021-06-02 06:51:09 +02:00
Stefano Garzarella
551bdfa079 docs: fix references to docs/devel/build-system.rst
Commit a14f0bf165 ("docs: convert build system documentation to rST")
converted docs/devel/build-system.txt to docs/devel/build-system.rst.

We still have several references to the old file, so let's fix them
with the following command:

  sed -i s/build-system.txt/build-system.rst/ \
      $(git grep -l docs/devel/build-system.txt)

Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Message-Id: <20210517151702.109066-4-sgarzare@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2021-06-02 06:51:09 +02:00
Stefano Garzarella
29f2316761 docs: fix references to docs/devel/atomics.rst
Commit 15e8699f00 ("atomics: convert to reStructuredText") converted
docs/devel/atomics.txt to docs/devel/atomics.rst.

We still have several references to the old file, so let's fix them
with the following command:

  sed -i s/atomics.txt/atomics.rst/ $(git grep -l docs/devel/atomics.txt)

Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210517151702.109066-3-sgarzare@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2021-06-02 06:51:09 +02:00
Stefano Garzarella
d0fb9657a3 docs: fix references to docs/devel/tracing.rst
Commit e50caf4a5c ("tracing: convert documentation to rST")
converted docs/devel/tracing.txt to docs/devel/tracing.rst.

We still have several references to the old file, so let's fix them
with the following command:

  sed -i s/tracing.txt/tracing.rst/ $(git grep -l docs/devel/tracing.txt)

Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210517151702.109066-2-sgarzare@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2021-06-02 06:51:09 +02:00
Peter Maydell
dd2db39d78 x86 queue, 2021-06-01
Features:
 * Add CPU model versions supporting 'xsaves' (Vitaly Kuznetsov)
 * Support AVX512 ZMM regs dump (Robert Hoo)
 
 Bug fixes:
 * Use better matching family/model/stepping for generic CPUs
   (Daniel P. Berrangé)
 
 Cleanups:
 * Hyper-V feature initialization cleanup (Vitaly Kuznetsov)
 * SEV firmware error list touchups (Connor Kuehl)
 * Constify CPUCaches and X86CPUDefinition (Philippe Mathieu-Daudé)
 * Document when features can be added to kvm_default_props
   (Eduardo Habkost)
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Merge remote-tracking branch 'remotes/ehabkost-gl/tags/x86-next-pull-request' into staging

x86 queue, 2021-06-01

Features:
* Add CPU model versions supporting 'xsaves' (Vitaly Kuznetsov)
* Support AVX512 ZMM regs dump (Robert Hoo)

Bug fixes:
* Use better matching family/model/stepping for generic CPUs
  (Daniel P. Berrangé)

Cleanups:
* Hyper-V feature initialization cleanup (Vitaly Kuznetsov)
* SEV firmware error list touchups (Connor Kuehl)
* Constify CPUCaches and X86CPUDefinition (Philippe Mathieu-Daudé)
* Document when features can be added to kvm_default_props
  (Eduardo Habkost)

# gpg: Signature made Tue 01 Jun 2021 19:08:33 BST
# gpg:                using RSA key 5A322FD5ABC4D3DBACCFD1AA2807936F984DC5A6
# gpg:                issuer "ehabkost@redhat.com"
# gpg: Good signature from "Eduardo Habkost <ehabkost@redhat.com>" [full]
# Primary key fingerprint: 5A32 2FD5 ABC4 D3DB ACCF  D1AA 2807 936F 984D C5A6

* remotes/ehabkost-gl/tags/x86-next-pull-request: (24 commits)
  sev: add missing firmware error conditions
  sev: use explicit indices for mapping firmware error codes to strings
  target/i386/sev: add support to query the attestation report
  i386: use global kvm_state in hyperv_enabled() check
  i386: prefer system KVM_GET_SUPPORTED_HV_CPUID ioctl over vCPU's one
  i386: adjust the expected KVM_GET_SUPPORTED_HV_CPUID array size
  i386: switch hyperv_expand_features() to using error_setg()
  i386: move eVMCS enablement to hyperv_init_vcpu()
  i386: split hyperv_handle_properties() into hyperv_expand_features()/hyperv_fill_cpuids()
  i386: introduce hv_cpuid_cache
  i386: drop FEAT_HYPERV feature leaves
  i386: introduce hv_cpuid_get_host()
  i386: introduce hyperv_feature_supported()
  i386: stop using env->features[] for filling Hyper-V CPUIDs
  i386: always fill Hyper-V CPUID feature leaves from X86CPU data
  i386: invert hyperv_spinlock_attempts setting logic with hv_passthrough
  i386: keep hyperv_vendor string up-to-date
  i386: use better matching family/model/stepping for 'max' CPU
  i386: use better matching family/model/stepping for 'qemu64' CPU
  i386/cpu_dump: support AVX512 ZMM regs dump
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-06-01 21:23:26 +01:00
John Snow
6b9c277797 gitlab: add python linters to CI
Add a Python container that has just enough juice for us to run the
Python code quality analysis tools. Base this container on Fedora,
because Fedora has very convenient packaging for testing multiple Python
versions.

We need python3, pip (for pulling packages), pipenv and virtualenv for
creating virtual environments, and tox for running tests. make is needed
for running 'make check-tox' and 'make venv-check' targets. Python3.10
is needed explicitly because the tox package only pulls in 3.6-3.9, but
we wish to test the forthcoming release of Python as well to help
predict any problems. Lastly, we need gcc to compile PyPI packages that
may not have a binary distribution available.

Add two tests:

check-python-pipenv uses pipenv to test a frozen, very explicit set of
packages against our minimum supported python version, Python 3.6. This
test is not allowed to fail. The dependencies this test uses do not
change unless python/Pipfile.lock is changed.

check-python-tox uses tox to install the latest versions of required
python dependencies against a wide array of Python versions from 3.6 to
3.9, even including the yet-to-be-released Python 3.10. This test is
allowed to fail with a warning.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Message-id: 20210527211715.394144-32-jsnow@redhat.com
[Fix rebase conflict over .gitlab-ci.yml --js]
Signed-off-by: John Snow <jsnow@redhat.com>
2021-06-01 16:21:21 -04:00
John Snow
3c8de38c85 python: add tox support
This is intended to be a manually run, non-CI script.

Use tox to test the linters against all python versions from 3.6 to
3.10. This will only work if you actually have those versions installed
locally, but Fedora makes this easy:

> sudo dnf install python3.6 python3.7 python3.8 python3.9 python3.10

Unlike the pipenv tests (make venv-check), this pulls "whichever"
versions of the python packages, so they are unpinned and may break as
time goes on. In the case that breakages are found, setup.cfg should be
amended accordingly to avoid the bad dependant versions, or the code
should be amended to work around the issue.

With confidence that the tests pass on 3.6 through 3.10 inclusive, add
the appropriate classifiers to setup.cfg to indicate which versions we
claim to support.

Tox 3.18.0 or above is required to use the 'allowlist_externals' option.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Tested-by: Cleber Rosa <crosa@redhat.com>
Message-id: 20210527211715.394144-31-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
2021-06-01 16:21:21 -04:00
John Snow
f9c0600f02 python: add .gitignore
Ignore *Python* build and package output (build, dist, qemu.egg-info);
these files are not created as part of a QEMU build. They are created by
running the commands 'python3 setup.py <sdist|bdist>' when preparing
tarballs to upload to e.g. PyPI.

Ignore miscellaneous cached python confetti (mypy, pylint, et al)

Ignore .idea (pycharm) .vscode, and .venv (pipenv et al).

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Message-id: 20210527211715.394144-30-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
2021-06-01 16:21:21 -04:00
John Snow
6560379fac python: add Makefile for some common tasks
Add "make venv" to create the pipenv-managed virtual environment that
contains our explicitly pinned dependencies.

Add "make check" to run the python linters [in the host execution
environment].

Add "make venv-check" which combines the above two: create/update the
venv, then run the linters in that explicitly managed environment.

Add "make develop" which canonizes the runes needed to get both the
linting pre-requisites (the "[devel]" part), and the editable
live-install (the "-e" part) of these python libraries.

make clean: delete miscellaneous python packaging output possibly
created by pipenv, pip, or other python packaging utilities

make distclean: delete the above, the .venv, and the editable "qemu"
package forwarder (qemu.egg-info) if there is one.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Tested-by: Cleber Rosa <crosa@redhat.com>
Message-id: 20210527211715.394144-29-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
2021-06-01 16:21:21 -04:00
John Snow
31622b2a8a python: add avocado-framework and tests
Try using avocado to manage our various tests; even though right now
they're only invoking shell scripts and not really running any
python-native code.

Create tests/, and add shell scripts which call out to mypy, flake8,
pylint and isort to enforce the standards in this directory.

Add avocado-framework to the setup.cfg development dependencies, and add
avocado.cfg to store some preferences for how we'd like the test output
to look.

Finally, add avocado-framework to the Pipfile environment and lock the
new dependencies. We are using avocado >= 87.0 here to take advantage of
some features that Cleber has helpfully added to make the test output
here *very* friendly and easy to read for developers that might chance
upon the output in Gitlab CI.

[Note: ALL of the dependencies get updated to the most modern versions
that exist at the time of this writing. No way around it that I have
seen. Not ideal, but so it goes.]

Provided you have the right development dependencies (mypy, flake8,
isort, pylint, and now avocado-framework) You should be able to run
"avocado --config avocado.cfg run tests/" from the python folder to run
all of these linters with the correct arguments.

(A forthcoming commit adds the much easier 'make check'.)

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Tested-by: Cleber Rosa <crosa@redhat.com>
Message-id: 20210527211715.394144-28-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
2021-06-01 16:21:21 -04:00
John Snow
dbe75f5566 python: add devel package requirements to setuptools
setuptools doesn't have a formal understanding of development requires,
but it has an optional feataures section. Fine; add a "devel" feature
and add the requirements to it.

To avoid duplication, we can modify pipenv to install qemu[devel]
instead. This enables us to run invocations like "pip install -e
.[devel]" and test the package on bleeding-edge packages beyond those
specified in Pipfile.lock.

Importantly, this also allows us to install the qemu development
packages in a non-networked mode: `pip3 install --no-index -e .[devel]`
will now fail if the proper development dependencies are not already
met. This can be useful for automated build scripts where fetching
network packages may be undesirable.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Message-id: 20210527211715.394144-27-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
2021-06-01 16:21:21 -04:00
John Snow
a4dd49d405 python/qemu: add qemu package itself to pipenv
This adds the python qemu packages themselves to the pipenv manifest.
'pipenv sync' will create a virtual environment sufficient to use the SDK.
'pipenv sync --dev' will create a virtual environment sufficient to use
and test the SDK (with pylint, mypy, isort, flake8, etc.)

The qemu packages are installed in 'editable' mode; all changes made to
the python package inside the git tree will be reflected in the
installed package without reinstallation. This includes changes made
via git pull and so on.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Tested-by: Cleber Rosa <crosa@redhat.com>
Message-id: 20210527211715.394144-26-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
2021-06-01 16:21:21 -04:00