Queued openrisc patches
# gpg: Signature made Mon 13 Feb 2017 21:21:03 GMT
# gpg: using RSA key 0xAD1270CC4DD0279B
# gpg: Good signature from "Richard Henderson <rth7680@gmail.com>"
# gpg: aka "Richard Henderson <rth@redhat.com>"
# gpg: aka "Richard Henderson <rth@twiddle.net>"
# Primary key fingerprint: 9CB1 8DDA F8E8 49AD 2AFC 16A4 AD12 70CC 4DD0 279B
* remotes/rth/tags/pull-or-20170214: (24 commits)
target/openrisc: Optimize for r0 being zero
target/openrisc: Tidy handling of delayed branches
target/openrisc: Tidy ppc/npc implementation
target/openrisc: Optimize l.jal to next
target/openrisc: Fix madd
target/openrisc: Implement muld, muldu, macu, msbu
target/openrisc: Represent MACHI:MACLO as a single unit
target/openrisc: Implement msync
target/openrisc: Enable trap, csync, msync, psync for user mode
target/openrisc: Set flags on helpers
target/openrisc: Use movcond where appropriate
target/openrisc: Keep SR_CY and SR_OV in a separate variables
target/openrisc: Keep SR_F in a separate variable
target/openrisc: Invert the decoding in dec_calc
target/openrisc: Put SR[OVE] in TB flags
target/openrisc: Streamline arithmetic and OVE
target/openrisc: Rationalize immediate extraction
target/openrisc: Tidy insn dumping
target/openrisc: Implement lwa, swa
target/openrisc: Fix exception handling status registers
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The HW does not special-case r0, but the ABI specifies that r0 should
contain 0. If we expose this fact to the optimizer, we can simplify
a lot of the generated code. We must of course verify that r0==0, but
that is trivial to do with a TB flag.
Signed-off-by: Richard Henderson <rth@twiddle.net>
The NPC SPR is really only supposed to be used for FPGA debugging.
It contains the same contents as PC, unless one plays games. Follow
the or1ksim implementation in flushing delayed branch state when it
is changed.
The PPC SPR need not be updated every instruction, merely when we
exit the TB or attempt to read its contents.
Signed-off-by: Richard Henderson <rth@twiddle.net>
This allows the tcg optimizer to see, and fold, all of the
constants involved in a GOT base register load sequence.
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Note that the specification for lf.madd.s is confused. It's
the only mention of supposed FPMADDHI/FPMADDLO special registers.
On the other hand, or1ksim implements a somewhat normal non-fused
multiply and add. Mirror that.
Reviewed-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This avoids having to keep merging and extracting the flag from SR.
Reviewed-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Decoding the opcodes in the right order reduces by 100+ lines.
Also, it happens to put the opcodes in the same order as Chapter 17.
Reviewed-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Fix incorrect overflow calculation. Move overflow exception check
to a helper function, to eliminate inline branches. Remove some
incorrect special casing of R0. Implement multiply inline.
Reviewed-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Signed-off-by: Richard Henderson <rth@twiddle.net>
The architecture manual is consistent in using "I" for signed
fields and "K" for unsigned fields. Mirror that.
Reviewed-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Signed-off-by: Richard Henderson <rth@twiddle.net>
I am working on testing instruction emulation patches for the linux
kernel. During testing I found these 2 issues:
- sets DSX (delay slot exception) but never clears it
- EEAR for illegal insns should point to the bad exception (as per
openrisc spec) but its not
This patch fixes these two issues by clearing the DSX flag when not in a
delay slot and by setting EEAR to exception PC when handling illegal
instruction exceptions.
After this patch the openrisc kernel with latest patches boots great on
qemu and instruction emulation works.
Cc: qemu-trivial@nongnu.org
Cc: openrisc@lists.librecores.org
Signed-off-by: Stafford Horne <shorne@gmail.com>
Message-Id: <20170113220028.29687-1-shorne@gmail.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Threads work much better when you set the TLS register.
This was fixed in the upstream kernel for Linux 4.9.
Signed-off-by: Richard Henderson <rth@twiddle.net>
We need to handle EXCP_DEBUG and EXCP_INTERRUPT.
We need to send signals to the guest using queue_signal.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Migration
Amit: migration: remove myself as maintainer
MAINTAINERS: update my email address
Ashijeet: migrate: Introduce zero RAM checks to skip RAM migration
Pavel: Postcopy release RAM
Halil: consolidate VMStateField.start
Hailiang: COLO: fix setting checkpoint-delay not working properly
COLO: Shutdown related socket fd while do failover
COLO: Don't process failover request while loading VM's state
Me:
migration: Add VMSTATE_UNUSED_VARRAY_UINT32
migration: Add VMSTATE_WITH_TMP
tests/migration: Add test for VMSTATE_WITH_TMP
virtio-net VMState conversion and new VMSTATE macros
# gpg: Signature made Mon 13 Feb 2017 17:36:39 GMT
# gpg: using RSA key 0x0516331EBC5BFDE7
# gpg: Good signature from "Dr. David Alan Gilbert (RH2) <dgilbert@redhat.com>"
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 45F5 C71B 4A0C B7FB 977A 9FA9 0516 331E BC5B FDE7
* remotes/dgilbert/tags/pull-migration-20170213a:
virtio/migration: Migrate virtio-net to VMState
tests/migration: Add test for VMSTATE_WITH_TMP
migration: Add VMSTATE_WITH_TMP
migration: Add VMSTATE_UNUSED_VARRAY_UINT32
COLO: Don't process failover request while loading VM's state
COLO: Shutdown related socket fd while do failover
COLO: fix setting checkpoint-delay not working properly
migration: consolidate VMStateField.start
migrate: Introduce zero RAM checks to skip RAM migration
migration: discard non-dirty ram pages after the start of postcopy
add 'release-ram' migrate capability
migration: add MigrationState arg for ram_save_/compressed_/page()
MAINTAINERS: update my email address
migration: remove myself as maintainer
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
VMSTATE_WITH_TMP is for handling structures where some calculation
or rearrangement of the data needs to be performed before the data
hits the wire.
For example, where the value on the wire is an offset from a
non-migrated base, but the data in the structure is the actual pointer.
To use it, a temporary type is created and a vmsd used on that type.
The first element of the type must be 'parent' a pointer back to the
type of the main structure. VMSTATE_WITH_TMP takes care of allocating
and freeing the temporary before running the child vmsd.
The post_load/pre_save on the child vmsd can copy things from the parent
to the temporary using the parent pointer and do any other calculations
needed; it can then use normal VMSD entries to do the actual data
storage without having to fiddle around with qemu_get_*/qemu_put_*
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Message-Id: <20170203160651.19917-3-dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
VMSTATE_UNUSED_VARRAY_UINT32 is used to skip a chunk of the stream
that's an n-element array; note the array size and the dynamic value
read never get multiplied so there's no overflow risk.
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <20170203160651.19917-2-dgilbert@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
If the net connection between primary host and secondary host breaks
while COLO/COLO incoming threads are doing read() or write().
It will block until connection is timeout, and the failover process
will be blocked because of it.
So it is necessary to shutdown all the socket fds used by COLO
to avoid this situation. Besides, we should close the corresponding
file descriptors after failvoer BH shutdown them,
Or there will be an error.
Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Cc: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <1484657864-21708-3-git-send-email-zhang.zhanghailiang@huawei.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
If we set checkpoint-delay through command 'migrate-set-parameters',
It will not take effect until we finish last sleep chekpoint-delay,
That's will be offensive espeically when we want to change its value
from an extreme big one to a proper value.
Fix it by using timer to realize checkpoint-delay.
Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
Message-Id: <1484657864-21708-2-git-send-email-zhang.zhanghailiang@huawei.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
The member VMStateField.start is used for two things, partial data
migration for VBUFFER data (basically provide migration for a
sub-buffer) and for locating next in QTAILQ.
The implementation of the VBUFFER feature is broken when VMSTATE_ALLOC
is used. This however goes unnoticed because actually partial migration
for VBUFFER is not used at all.
Let's consolidate the usage of VMStateField.start by removing support
for partial migration for VBUFFER.
Signed-off-by: Halil Pasic <pasic@linux.vnet.ibm.com>
Message-Id: <20170203175217.45562-1-pasic@linux.vnet.ibm.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
After the start of postcopy migration there are some non-dirty pages which have
already been migrated. These pages are no longer needed on the source vm so that
we can free them and it doen't hurt to complete the migration.
Signed-off-by: Pavel Butsykin <pbutsykin@virtuozzo.com>
Message-Id: <20170203152321.19739-4-pbutsykin@virtuozzo.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
This feature frees the migrated memory on the source during postcopy-ram
migration. In the second step of postcopy-ram migration when the source vm
is put on pause we can free unnecessary memory. It will allow, in particular,
to start relaxing the memory stress on the source host in a load-balancing
scenario.
Signed-off-by: Pavel Butsykin <pbutsykin@virtuozzo.com>
Message-Id: <20170203152321.19739-3-pbutsykin@virtuozzo.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Manually merged in Pavel's 'migration: madvise error_report fixup!'
We install this file to data dir but since 0ab8ed18 it's no longer
required by any objects during "make". List it explicitly as a depended
target of install and fix the broken "make install" command.
Signed-off-by: Fam Zheng <famz@redhat.com>
Message-id: 20170204143245.15974-1-famz@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Block patches
# gpg: Signature made Sun 12 Feb 2017 01:26:20 GMT
# gpg: using RSA key 0xF407DB0061D5CF40
# gpg: Good signature from "Max Reitz <mreitz@redhat.com>"
# Primary key fingerprint: 91BE B60A 30DB 3E88 57D1 1829 F407 DB00 61D5 CF40
* remotes/maxreitz/tags/pull-block-2017-02-12: (21 commits)
qemu-img: Avoid setting ret to unused value in img_convert()
qemu-img: Use qemu_strtoul() rather than raw strtoul()
qemu-io: don't allow I/O operations larger than BDRV_REQUEST_MAX_BYTES
qcow2: Optimize the refcount-block overlap check
qemu-io: Add failure regression tests
qemu-iotests: Add _unsupported_fmt helper
qemu-io: Return non-zero exit code on failure
block/nfs: fix naming of runtime opts
block/nfs: fix NULL pointer dereference in URI parsing
block: bdrv_invalidate_cache: invalidate children first
block/qapi: reduce the execution time of qmp_query_blockstats
block/qapi: reduce the coupling between the bdrv_query_stats and bdrv_query_bds_stats
qemu-iotest: test to lookup protocol-based image with relative backing
qemu-iotests: Don't create fifos / pidfiles with protocol paths
block: check full backing filename when searching protocol filenames
block/vmdk: Fix the endian problem of buf_len and lba
iotests: record separate timings per format,protocol pair
iotests: Fix reference output for 059
qapi: Tweak error message of bdrv_query_image_info
qemu-img: Improve commit invalid base message
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Coverity points out that we assign the return value from
bdrv_snapshot_load_tmp() to 'ret' in img_convert(), but then
never use that variable. (We check for failure by looking
at local_err instead.) Drop the unused assignment, bringing
the call into line with the following call to
bdrv_snapshot_laod_tmp_by_id_or_name().
(Fixes CID 1247240.)
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1486744104-15590-3-git-send-email-peter.maydell@linaro.org
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Max Reitz <mreitz@redhat.com>
Some of the argument parsing in qemu-img uses strtoul() to parse
integer arguments. This is tricky to get correct and in fact the
code does not get it right, because it assigns the result of
strtoul() to an 'int' variable and then tries to check for > INT_MAX.
Coverity correctly complains that the comparison is always false.
Rewrite to use qemu_strtoul(), which has a saner convention for
reporting conversion failures.
(Fixes CID 1356421, CID 1356422, CID 1356423.)
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1486744104-15590-2-git-send-email-peter.maydell@linaro.org
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Max Reitz <mreitz@redhat.com>
Passing a request size larger than BDRV_REQUEST_MAX_BYTES to any of the
I/O commands results in an error. While 'read' and 'write' handle the
error correctly, 'aio_read' and 'aio_write' hit an assertion:
blk_aio_read_entry: Assertion `rwco->qiov->size == acb->bytes' failed.
The reason is that the QEMU I/O code cannot handle request sizes
larger than BDRV_REQUEST_MAX_BYTES, so this patch makes qemu-io check
that all values are within range.
Signed-off-by: Alberto Garcia <berto@igalia.com>
Message-id: 79f66648c685929a144396bda24d13a207131dcf.1485878688.git.berto@igalia.com
[mreitz: Use BDRV_REQUEST_MAX_BYTES instead of INT_MAX]
Signed-off-by: Max Reitz <mreitz@redhat.com>
