Denis V. Lunev [Tue, 17 May 2016 09:15:42 +0000 (12:15 +0300)]
qcow2: fix condition in is_zero_cluster
We should check for (res & BDRV_BLOCK_ZERO) only. The situation when we
will have !(res & BDRV_BLOCK_DATA) and will not have BDRV_BLOCK_ZERO is
not possible for images with bdi.unallocated_blocks_are_zero == true.
For those images where it's false, however, it can happen and we must
not consider the data zeroed then or we would corrupt the image.
Signed-off-by: Denis V. Lunev <den@openvz.org> CC: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Max Reitz [Tue, 17 May 2016 11:38:04 +0000 (13:38 +0200)]
block: Propagate AioContext change to all children
Instead of propagating any change of a BDS's AioContext only to its file
and backing children and letting driver-specific code do the rest, just
propagate it to all and drop the thus superfluous implementations of
bdrv_{at,de}tach_aio_context() in Quorum, blkverify and VMDK.
Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Kevin Wolf [Tue, 22 Mar 2016 17:38:44 +0000 (18:38 +0100)]
block: Remove BlockDriverState.blk
This patch removes the remaining users of bs->blk, which will allow us
to have multiple BBs on top of a single BDS. In the meantime, all checks
that are currently in place to prevent the user from creating such
setups can be switched to bdrv_has_blk() instead of accessing BDS.blk.
Future patches can allow them and e.g. enable users to mirror to a block
device that already has a BlockBackend on it.
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com>
Kevin Wolf [Tue, 22 Mar 2016 19:20:29 +0000 (20:20 +0100)]
block: Don't return throttling info in query-named-block-nodes
query-named-block-nodes should not return information that is related
to the attached BlockBackend rather than the node itself, so throttling
information needs to be removed from it.
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com>
Kevin Wolf [Tue, 22 Mar 2016 17:58:50 +0000 (18:58 +0100)]
block: Avoid bs->blk in bdrv_next()
We need to introduce a separate BdrvNextIterator struct that can keep
more state than just the current BDS in order to avoid using the bs->blk
pointer.
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com>
Kevin Wolf [Mon, 29 Feb 2016 09:50:38 +0000 (10:50 +0100)]
block: Add bdrv_has_blk()
In many cases we just want to know whether a BDS has at least one BB
attached, without needing to know the exact BB that is attached. In
contrast to bs->blk, this is still a valid question when more than one
BB can be attached, so just answer it by checking the parents list.
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com>
Kevin Wolf [Fri, 26 Feb 2016 12:50:43 +0000 (13:50 +0100)]
block: Remove bdrv_aio_multiwrite()
Since virtio-blk implements request merging itself these days, the only
remaining users are test cases for the function. That doesn't make the
function exactly useful any more.
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
Kevin Wolf [Mon, 18 Apr 2016 13:14:11 +0000 (15:14 +0200)]
blockjob: Don't touch BDS iostatus
Block jobs don't actually make use of the iostatus for their BDSes, but
they manage a separate block job iostatus. Still, they require that it
is enabled for the source BDS and they enable it automatically for the
target and set the error handling mode - which ends up never being used
by the job.
This patch removes all of the BDS iostatus handling from the block job,
which removes another few bs->blk accesses.
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com>
Kevin Wolf [Mon, 18 Apr 2016 09:36:38 +0000 (11:36 +0200)]
blockjob: Don't set iostatus of target
When block job errors were introduced, we assigned the iostatus of the
target BDS "just in case". The field has never been accessible for the
user because the target isn't listed in query-block.
Before we can allow the user to have a second BlockBackend on the
target, we need to clean this up. If anything, we would want to set the
iostatus for the internal BB of the job (which we can always do later),
but certainly not for a separate BB which the job doesn't even use.
As a nice side effect, this gets us rid of another bs->blk use.
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com>
Kevin Wolf [Fri, 26 Feb 2016 09:22:16 +0000 (10:22 +0100)]
block: User BdrvChild callback for device name
In order to get rid of bs->blk for bdrv_get_device_name() and
bdrv_get_device_or_node_name(), ask all parents for their name and
simply pick the first one.
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com>
Kevin Wolf [Wed, 24 Feb 2016 14:13:35 +0000 (15:13 +0100)]
block: Use BdrvChild callbacks for change_media/resize
We want to get rid of BlockDriverState.blk in order to allow multiple
BlockBackends per BDS. Converting the device callbacks in block.c (which
assume a single BlockBackend) to per-child callbacks gets us rid of the
first few instances.
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com>
Kevin Wolf [Tue, 22 Mar 2016 15:11:33 +0000 (16:11 +0100)]
block: Don't check throttled reqs in bdrv_requests_pending()
Checking whether there are throttled requests requires going to the
associated BlockBackend, which we want to avoid.
All users of bdrv_requests_pending() in block/io.c already call
bdrv_parent_drained_begin() first, which restarts all throttled
requests, so no throttled requests can be left here and this is removal
of dead code.
The remaining users (assertions during graph manipulation in block.c)
don't care about requests that are still queued in the BlockBackend and
haven't been issued for a BlockDriverState yet.
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Now that I/O throttling is fully done on the BlockBackend level, there
is no reason any more to block I/O throttling for nodes with multiple
parents as the parents don't influence each other any more.
Conflicts:
block.c
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Kevin Wolf [Mon, 29 Feb 2016 12:56:21 +0000 (13:56 +0100)]
block: Remove bdrv_move_feature_fields()
bdrv_move_feature_fields() and swap_feature_fields() are empty now, they
can be removed.
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Kevin Wolf [Tue, 22 Mar 2016 12:00:08 +0000 (13:00 +0100)]
block: Decouple throttling from BlockDriverState
This moves the throttling related part of the BDS life cycle management
to BlockBackend. The throttling group reference is now kept even when no
medium is inserted.
With this commit, throttling isn't disabled and then re-enabled any more
during graph reconfiguration. This fixes the temporary breakage of I/O
throttling when used with live snapshots or block jobs that manipulate
the graph.
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Kevin Wolf [Wed, 11 May 2016 12:57:23 +0000 (14:57 +0200)]
block/io: Quiesce parents between drained_begin/end
So far, bdrv_parent_drained_begin/end() was called for the duration of
the actual bdrv_drain() at the beginning of a drained section, but we
really should keep parents quiesced until the end of the drained
section.
This does not actually change behaviour at this point because the only
user of the .drained_begin/end BdrvChildRole callback is I/O throttling,
which already doesn't send any new requests after flushing its queue in
.drained_begin. The patch merely removes a trap for future users.
Reported-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Kevin Wolf [Tue, 22 Mar 2016 11:05:35 +0000 (12:05 +0100)]
block: Drain throttling queue with BdrvChild callback
This removes the last part of I/O throttling from block/io.c and moves
it to the BlockBackend.
Instead of having knowledge about throttling inside io.c, we can call a
BdrvChild callback .drained_begin/end, which happens to drain the
throttled requests for BlockBackend parents.
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Kevin Wolf [Mon, 21 Mar 2016 11:56:44 +0000 (12:56 +0100)]
block: Move throttling fields from BDS to BB
This patch changes where the throttling state is stored (used to be the
BlockDriverState, now it is the BlockBackend), but it doesn't actually
make it a BB level feature yet. For example, throttling is still
disabled when the BDS is detached from the BB.
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Kevin Wolf [Mon, 21 Mar 2016 10:30:57 +0000 (11:30 +0100)]
block: throttle-groups: Use BlockBackend pointers internally
As a first step towards moving I/O throttling to the BlockBackend level,
this patch changes all pointers in struct ThrottleGroup from referencing
a BlockDriverState to referencing a BlockBackend.
This change is valid because we made sure that throttling can only be
enabled on BDSes which have a BB attached.
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Kevin Wolf [Mon, 21 Mar 2016 10:27:04 +0000 (11:27 +0100)]
block: Introduce BlockBackendPublic
Some features, like I/O throttling, are implemented outside
block-backend.c, but still want to keep information in BlockBackend,
e.g. list entries that allow keeping a list of BlockBackends.
In order to avoid exposing the whole struct layout in the public header
file, this patch introduces an embedded public struct where such
information can be added and a pair of functions to convert between
BlockBackend and BlockBackendPublic.
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Reviewed-by: Eric Blake <eblake@redhat.com> Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Kevin Wolf [Mon, 21 Mar 2016 09:49:51 +0000 (10:49 +0100)]
block: Make sure throttled BDSes always have a BB
It was already true in principle that a throttled BDS always has a BB
attached, except that the order of operations while attaching or
detaching a BDS to/from a BB wasn't careful enough.
This commit breaks graph manipulations while I/O throttling is enabled.
It would have been possible to keep things working with some temporary
hacks, but quite cumbersome, so it's not worth the hassle. We'll fix
things again in a minute.
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Paolo Bonzini [Wed, 16 Mar 2016 09:24:54 +0000 (10:24 +0100)]
hw: clean up hw/hw.h includes
Include qom/object.h and exec/memory.h instead of exec/ioport.h;
exec/ioport.h was almost everywhere required only for those two
includes, not for the content of the header itself.
Remove block/aio.h, everybody is already including it through
another path.
With this change, include/hw/hw.h is freed from qemu-common.h.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Paolo Bonzini [Wed, 16 Mar 2016 09:20:34 +0000 (10:20 +0100)]
hw: remove pio_addr_t
pio_addr_t is almost unused, because these days I/O ports are simply
accessed through the address space. cpu_{in,out}[bwl] themselves are
almost unused; monitor.c and xen-hvm.c could use address_space_read/write
directly, since they have an integer size at hand. This leaves qtest as
the only user of those functions.
On the other hand even portio_* functions use this type; the only
interesting use of pio_addr_t thus is include/hw/sysbus.h. I guess I
could move it there, but I don't see much benefit in that either. Using
uint32_t is enough and avoids the need to include ioport.h everywhere.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Paolo Bonzini [Tue, 15 Mar 2016 12:16:36 +0000 (13:16 +0100)]
exec: extract exec/tb-context.h
TCG backends do not need most of exec-all.h; extract what they actually
need to a separate file or move it directly to tcg.h. The next patch
will stop including exec-all.h from everywhere.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Paolo Bonzini [Tue, 15 Dec 2015 12:49:17 +0000 (13:49 +0100)]
mips: move CP0 functions out of cpu.h
These are here for historical reasons: they are needed from both gdbstub.c
and op_helper.c, and the latter was compiled with fixed AREG0. It is
not needed anymore, so uninline them.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Paolo Bonzini [Fri, 27 Jun 2014 06:33:38 +0000 (08:33 +0200)]
cpu: move endian-dependent load/store functions to cpu-all.h
Disentangle cpu-common.h and memory.h from NEED_CPU_H. Prototypes are
not defined for !NEED_CPU_H, so remove them from poison.h too. Only
macros need poisoning.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Paolo Bonzini [Fri, 4 Dec 2015 10:10:27 +0000 (11:10 +0100)]
explicitly include hw/qdev-core.h
exec/cpu-all.h includes qom/cpu.h, which includes hw/qdev-core.h.
Explicit inclusion will keep things working when cpu.h will not be
included indirectly almost everywhere (either directly or through
qemu-common.h).
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Paolo Bonzini [Fri, 4 Dec 2015 10:10:07 +0000 (11:10 +0100)]
explicitly include qom/cpu.h
exec/cpu-all.h includes qom/cpu.h. Explicit inclusion
will keep things working when cpu.h will not be included
indirectly almost everywhere (either directly or through
qemu-common.h).
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Paolo Bonzini [Tue, 15 Mar 2016 12:49:25 +0000 (13:49 +0100)]
target-xtensa: make cpu-qom.h not target specific
Make XtensaCPU an opaque type within cpu-qom.h, and move all definitions
of private methods, as well as all type definitions that require knowledge
of the layout to cpu.h. Conversely, move all definitions needed to
define a class to cpu-qom.h. This helps making files independent of
NEED_CPU_H if they only need to pass around CPU pointers.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Paolo Bonzini [Tue, 15 Mar 2016 12:49:25 +0000 (13:49 +0100)]
target-unicore32: make cpu-qom.h not target specific
Make UniCore32CPU an opaque type within cpu-qom.h, and move all
definitions of private methods, as well as all type definitions that
require knowledge of the layout to cpu.h. This helps making files
independent of NEED_CPU_H if they only need to pass around CPU pointers.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Paolo Bonzini [Tue, 15 Mar 2016 12:49:25 +0000 (13:49 +0100)]
target-tricore: make cpu-qom.h not target specific
Make TriCoreCPU an opaque type within cpu-qom.h, and move all definitions
of private methods, as well as all type definitions that require knowledge
of the layout to cpu.h. This helps making files independent of NEED_CPU_H
if they only need to pass around CPU pointers.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Paolo Bonzini [Tue, 15 Mar 2016 12:49:25 +0000 (13:49 +0100)]
target-sparc: make cpu-qom.h not target specific
Make SPARCCPU an opaque type within cpu-qom.h, and move all definitions
of private methods, as well as all type definitions that require knowledge
of the layout to cpu.h. This helps making files independent of NEED_CPU_H
if they only need to pass around CPU pointers.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Paolo Bonzini [Tue, 15 Mar 2016 12:49:25 +0000 (13:49 +0100)]
target-sh4: make cpu-qom.h not target specific
Make SuperHCPU an opaque type within cpu-qom.h, and move all definitions
of private methods, as well as all type definitions that require knowledge
of the layout to cpu.h. This helps making files independent of NEED_CPU_H
if they only need to pass around CPU pointers.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Paolo Bonzini [Tue, 15 Mar 2016 12:49:25 +0000 (13:49 +0100)]
target-s390x: make cpu-qom.h not target specific
Make S390XCPU an opaque type within cpu-qom.h, and move all definitions
of private methods, as well as all type definitions that require knowledge
of the layout to cpu.h. This helps making files independent of NEED_CPU_H
if they only need to pass around CPU pointers.
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Paolo Bonzini [Tue, 15 Mar 2016 12:49:25 +0000 (13:49 +0100)]
target-ppc: make cpu-qom.h not target specific
Make PowerPCCPU an opaque type within cpu-qom.h, and move all definitions
of private methods, as well as all type definitions that require knowledge
of the layout to cpu.h. Conversely, move all definitions needed to define
a class to cpu-qom.h. This helps making files independent of NEED_CPU_H
if they only need to pass around CPU pointers.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Paolo Bonzini [Wed, 18 May 2016 11:24:27 +0000 (13:24 +0200)]
target-ppc: do not make PowerPCCPUClass depend on target-specific symbols
Just leave some members in even if they are unused on e.g.
32-bit PPC or user-mode emulation. This avoids complications
when using PowerPCCPUClass in code that is compiled just
once (because it applies to both 32-bit and 64-bit PPC
for example) but still needs to peek at PPC-specific members.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Paolo Bonzini [Tue, 15 Mar 2016 12:49:25 +0000 (13:49 +0100)]
target-mips: make cpu-qom.h not target specific
Make MIPSCPU an opaque type within cpu-qom.h, and move all definitions of
private methods, as well as all type definitions that require knowledge
of the layout to cpu.h. This helps making files independent of NEED_CPU_H
if they only need to pass around CPU pointers.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Paolo Bonzini [Tue, 15 Mar 2016 12:49:25 +0000 (13:49 +0100)]
target-microblaze: make cpu-qom.h not target specific
Make MicroBlazeCPU an opaque type within cpu-qom.h, and move all
definitions of private methods, as well as all type definitions that
require knowledge of the layout to cpu.h. This helps making files
independent of NEED_CPU_H if they only need to pass around CPU pointers.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Paolo Bonzini [Tue, 15 Mar 2016 12:49:25 +0000 (13:49 +0100)]
target-m68k: make cpu-qom.h not target specific
Make M68KCPU an opaque type within cpu-qom.h, and move all definitions of
private methods, as well as all type definitions that require knowledge
of the layout to cpu.h. This helps making files independent of NEED_CPU_H
if they only need to pass around CPU pointers.
Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Paolo Bonzini [Tue, 15 Mar 2016 12:49:25 +0000 (13:49 +0100)]
target-lm32: make cpu-qom.h not target specific
Make LM32CPU an opaque type within cpu-qom.h, and move all definitions of
private methods, as well as all type definitions that require knowledge
of the layout to cpu.h. This helps making files independent of NEED_CPU_H
if they only need to pass around CPU pointers.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Paolo Bonzini [Tue, 15 Mar 2016 12:49:25 +0000 (13:49 +0100)]
target-i386: make cpu-qom.h not target specific
Make X86CPU an opaque type within cpu-qom.h, and move all definitions of
private methods, as well as all type definitions that require knowledge
of the layout to cpu.h. This helps making files independent of NEED_CPU_H
if they only need to pass around CPU pointers.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Paolo Bonzini [Tue, 15 Mar 2016 12:49:25 +0000 (13:49 +0100)]
target-cris: make cpu-qom.h not target specific
Make CRISCPU an opaque type within cpu-qom.h, and move all definitions of
private methods, as well as all type definitions that require knowledge
of the layout to cpu.h. This helps making files independent of NEED_CPU_H
if they only need to pass around CPU pointers.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Paolo Bonzini [Tue, 15 Mar 2016 12:49:25 +0000 (13:49 +0100)]
target-arm: make cpu-qom.h not target specific
Make ARMCPU an opaque type within cpu-qom.h, and move all definitions of
private methods, as well as all type definitions that require knowledge
of the layout to cpu.h. This helps making files independent of NEED_CPU_H
if they only need to pass around CPU pointers.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Paolo Bonzini [Tue, 15 Mar 2016 12:49:25 +0000 (13:49 +0100)]
target-alpha: make cpu-qom.h not target specific
Make AlphaCPU an opaque type within cpu-qom.h, and move all definitions
of private methods, as well as all type definitions that require knowledge
of the layout to cpu.h. This helps making files independent of NEED_CPU_H
if they only need to pass around CPU pointers.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Peter Maydell [Thu, 19 May 2016 08:27:28 +0000 (09:27 +0100)]
Merge remote-tracking branch 'remotes/mjt/tags/pull-trivial-patches-2016-05-18' into staging
trivial patches for 2016-05-18
# gpg: Signature made Wed 18 May 2016 13:04:43 BST using RSA key ID A4C3D7DB
# gpg: Good signature from "Michael Tokarev <mjt@tls.msk.ru>"
# gpg: aka "Michael Tokarev <mjt@corpit.ru>"
# gpg: aka "Michael Tokarev <mjt@debian.org>"
* remotes/mjt/tags/pull-trivial-patches-2016-05-18:
Fix some typos found by codespell
9p: drop unused declaration from coth.h
smbios: fix typo
accel: make configure_accelerator return void
configure: Use uniform description for devel packages
ipack: Update e-mail address
util: fix comment typos
qdict: fix unbounded stack warning for qdict_array_entries
Fix typo in variable name (found and fixed by codespell)
vl: fix comment about when parsing cpu definitions
loader: fix potential memory leak
remove comment for nonexistent structure member
s390: remove misleading comment
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Peter Xu [Tue, 22 Mar 2016 02:37:26 +0000 (10:37 +0800)]
qdict: fix unbounded stack warning for qdict_array_entries
Here we use one g_strdup_printf() to replace the two stack allocated
array, considering it's more convenient, safe, and as long as it's
called rarely only when quorum device opens. This will remove the
unbound stack warning when compiling with "-Wstack-usage=1000000".
Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Peter Xu <peterx@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Peter Maydell [Tue, 17 May 2016 15:49:11 +0000 (16:49 +0100)]
Merge remote-tracking branch 'remotes/cohuck/tags/s390x-20160517' into staging
First batch of s390x patches for 2.7:
- The new machine for 2.7
- Make use of the runtime instrumentation support introduced in
the kernel
- Enhance our ipl (boot) process: We can now start from devices
in subchannel sets > 0 as well. As a bonus, the conversion to
diag308 in the bios allows us to get rid of the gr7 hack.
- Xiaoqiang Zhao's SCLP qomification patches
- Several fixes in the s390x pci implementation
# gpg: Signature made Tue 17 May 2016 15:35:32 BST using RSA key ID C6F02FAF
# gpg: Good signature from "Cornelia Huck <huckc@linux.vnet.ibm.com>"
# gpg: aka "Cornelia Huck <cornelia.huck@de.ibm.com>"
* remotes/cohuck/tags/s390x-20160517:
s390x/pci: remove whitespace
s390x/pci: add length checking for pci sclp handlers
s390x/pci: enhance mpcifc_service_call
s390x/pci: fix s390_pci_sclp_deconfigure
s390x/pci: introduce S390PCIBusDevice.iommu_enabled
s390x/pci: export pci_dereg_ioat and pci_dereg_irqs
s390x/pci: separate s390_pcihost_iommu_configure function
s390x/pci: separate s390_sclp_configure function
s390x/pci: fix reg_irqs()
hw/char: QOM'ify sclpconsole.c
hw/char: QOM'ify sclpconsole-lm.c
s390x/ipl: Remove redundant usage of gr7
s390-ccw.img: rebuild image
pc-bios/s390-ccw: Get device address via diag 308/6
s390x/ipl: Add ssid field to IplParameterBlock
s390x/ipl: Provide ipl parameter block
s390x/ipl: Add type and length checks for IplParameterBlock values
s390x/ipl: Extend the IplParameterBlock struct
s390x: enable runtime instrumentation
s390x: add compat machine for 2.7
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Yi Min Zhao [Wed, 4 May 2016 07:56:53 +0000 (15:56 +0800)]
s390x/pci: add length checking for pci sclp handlers
The configure/deconfigure sclp commands need a SCCB with a length of
at least 16. Indicate in the response code if this is not fulfilled.
Signed-off-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com> Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Yi Min Zhao [Thu, 28 Apr 2016 05:24:07 +0000 (13:24 +0800)]
s390x/pci: enhance mpcifc_service_call
Enhance error handling for mpcifc_service_call() to propagate errors
to guest by setting status codes or triggering program interrupts.
Signed-off-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com> Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Yi Min Zhao [Thu, 28 Apr 2016 05:22:51 +0000 (13:22 +0800)]
s390x/pci: fix s390_pci_sclp_deconfigure
When deconfiguring a s390 pci device, we should deconfigure the
corresponding IOMMU memory region and the IRQs for the device.
Signed-off-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com> Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
We introduce iommu_enabled field for S390PCIBusDevice struct to
track whether the iommu has been enabled for the device. This allows
us to stop temporarily changing ->configured while en/disabling the
iommu and to do conditional cleanup later.
Signed-off-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com> Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Yi Min Zhao [Tue, 26 Apr 2016 06:50:16 +0000 (14:50 +0800)]
s390x/pci: export pci_dereg_ioat and pci_dereg_irqs
dereg_irqs and dereg_ioat are needed by external functions. Let's
rename and export both of them in s390-pci-inst.h.
Signed-off-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com> Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Yi Min Zhao [Wed, 4 May 2016 07:06:44 +0000 (15:06 +0800)]
s390x/pci: separate s390_pcihost_iommu_configure function
Split s390_pcihost_iommu_configure() into separate functions for
configuring and deconfiguring in order to make the code more readable.
Signed-off-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com> Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Yi Min Zhao [Thu, 28 Apr 2016 04:33:53 +0000 (12:33 +0800)]
s390x/pci: separate s390_sclp_configure function
Split s390_sclp_configure() into separate functions for sclp
configuring and deconfiguring in order to make the code more readable.
Signed-off-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com> Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
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