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We forward-declare Object typedef in "qemu/typedefs.h" since commit
ca27b5eb7cd ("qom/object: Move Object typedef to 'qemu/typedefs.h'").
Use it everywhere to make the code simpler.
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20210225182003.3629342-1-philmd@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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These flags cause the output to look strange for 'make check', and
they aren't needed to reproduce bugs, if they reappear.
Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Alexander Bulekov <alxndr@bu.edu>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210216181316.794276-1-alxndr@bu.edu>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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We already got a global function called id_generate() to create unique
IDs within QEMU. Let's use it in the network subsytem, too, instead of
inventing our own ID scheme here.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20210215090225.1046239-1-thuth@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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The qemu-img.rst, qemu-nbd.rst, virtfs-proxy-helper.rst, qemu-trace-stap.rst,
and virtiofsd.rst manuals were moved to docs/tools, so this update MAINTAINERS
accordingly.
Fixes: a08b4a9fe6c ("docs: Move tools documentation to tools manual")
Signed-off-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20210204135425.1380280-1-wainersm@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <20210126124240.2081959-3-armbru@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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When dbus_vmstate_post_load() fails, it complains to stderr. Except
on short read, where it checks with g_return_val_if_fail(). This
fails silently if G_DISABLE_CHECKS is undefined (it should be), or
else pads the short read with uninitialized bytes.
Replace g_return_val_if_fail() by a proper error check.
Fixes: 5010cec2bc87dafab39b3913c8ca91f88df9c540
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20210126124240.2081959-2-armbru@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20210225181507.3624509-1-f4bug@amsat.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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g_mapped_file_new_from_fd()'s parameter is named 'writable'.
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Reviewed-by: David Edmondson <dme@dme.org>
Message-Id: <20210225181344.3623720-1-philmd@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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On Fedora 33, gcc 10.2.1 notes that scsi_cdb_length(buf) can set
len==-1, which in turn overflows g_malloc():
[5/5] Linking target qemu-system-x86_64
In function ‘scsi_disk_new_request_dump’,
inlined from ‘scsi_new_request’ at ../hw/scsi/scsi-disk.c:2608:9:
../hw/scsi/scsi-disk.c:2582:19: warning: argument 1 value ‘18446744073709551612’ exceeds maximum object size 9223372036854775807 [-Walloc-size-larger-than=]
2582 | line_buffer = g_malloc(len * 5 + 1);
| ^
Silence it with a decent assertion, since we only convert a buffer to
bytes when we have a valid cdb length.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210209152350.207958-1-eblake@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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An assorted set of spelling fixes in various places.
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Reviewed-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20210309111510.79495-1-mjt@msgid.tls.msk.ru>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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'remotes/stsquad/tags/pull-testing-docs-xen-updates-100321-2' into staging
Testing, guest-loader and other misc tweaks
- add warning text to quickstart example
- add CFI tests to CI
- use --arch-only for docker pre-requisites
- fix .editorconfig for emacs
- add guest-loader for Xen-like hypervisor testing
- move generic-loader docs into manual proper
- move semihosting out of hw/
# gpg: Signature made Wed 10 Mar 2021 15:35:31 GMT
# gpg: using RSA key 6685AE99E75167BCAFC8DF35FBD0DB095A9E2A44
# gpg: Good signature from "Alex Bennée (Master Work Key) <alex.bennee@linaro.org>" [full]
# Primary key fingerprint: 6685 AE99 E751 67BC AFC8 DF35 FBD0 DB09 5A9E 2A44
* remotes/stsquad/tags/pull-testing-docs-xen-updates-100321-2:
semihosting: Move hw/semihosting/ -> semihosting/
semihosting: Move include/hw/semihosting/ -> include/semihosting/
tests/avocado: add boot_xen tests
docs: add some documentation for the guest-loader
docs: move generic-loader documentation into the main manual
hw/core: implement a guest-loader to support static hypervisor guests
device_tree: add qemu_fdt_setprop_string_array helper
hw/riscv: migrate fdt field to generic MachineState
hw/board: promote fdt from ARM VirtMachineState to MachineState
.editorconfig: update the automatic mode setting for Emacs
tests/docker: Use --arch-only when building Debian cross image
gitlab-ci.yml: Add jobs to test CFI flags
gitlab-ci.yml: Allow custom # of parallel linkers
tests/docker: add a test-tcg for building then running check-tcg
docs/system: add a gentle prompt for the complexity to come
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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With the exception of hw/core/, the hw/ directory only contains
device models used in system emulation. Semihosting is also used
by user emulation. As a generic feature, move it out of hw/ directory.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20210226131356.3964782-3-f4bug@amsat.org>
Message-Id: <20210305135451.15427-3-alex.bennee@linaro.org>
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We want to move the semihosting code out of hw/ in the next patch.
This patch contains the mechanical steps, created using:
$ git mv include/hw/semihosting/ include/
$ sed -i s,hw/semihosting,semihosting, $(git grep -l hw/semihosting)
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20210226131356.3964782-2-f4bug@amsat.org>
Message-Id: <20210305135451.15427-2-alex.bennee@linaro.org>
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These tests make sure we can boot the Xen hypervisor with a Dom0
kernel using the guest-loader. We currently have to use a kernel I
built myself because there are issues using the Debian kernel images.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Cleber Rosa <crosa@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Message-Id: <20210303173642.3805-8-alex.bennee@linaro.org>
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Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20210303173642.3805-7-alex.bennee@linaro.org>
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We might as well surface this useful information in the manual so
users can find it easily. It is a fairly simple conversion to rst with
the only textual fixes being QemuOps to QemuOpts.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20210303173642.3805-6-alex.bennee@linaro.org>
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Hypervisors, especially type-1 ones, need the firmware/bootcode to put
their initial guest somewhere in memory and pass the information to it
via platform data. The guest-loader is modelled after the generic
loader for exactly this sort of purpose:
$QEMU $ARGS -kernel ~/xen.git/xen/xen \
-append "dom0_mem=1G,max:1G loglvl=all guest_loglvl=all" \
-device guest-loader,addr=0x42000000,kernel=Image,bootargs="root=/dev/sda2 ro console=hvc0 earlyprintk=xen" \
-device guest-loader,addr=0x47000000,initrd=rootfs.cpio
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210303173642.3805-5-alex.bennee@linaro.org>
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A string array in device tree is simply a series of \0 terminated
strings next to each other. As libfdt doesn't support that directly
we need to build it ourselves.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20210303173642.3805-4-alex.bennee@linaro.org>
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This is a mechanical change to make the fdt available through
MachineState.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210303173642.3805-3-alex.bennee@linaro.org>
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The use of FDT's is quite common across our various platforms. To
allow the guest loader to tweak it we need to make it available in
the generic state. This creates the field and migrates the initial
user to use the generic field. Other boards will be updated in later
patches.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210303173642.3805-2-alex.bennee@linaro.org>
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It seems the editor specific keywords have been deprecated in the main
editorconfig plugin:
https://github.com/editorconfig/editorconfig-emacs#file-type-file_type_ext-file_type_emacs
Update the keywords to the suggested one and point users at the
extension.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20210305144839.6558-1-alex.bennee@linaro.org>
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When building a Docker image based on debian10.docker on
a non-x86 host, we get:
[2/4] RUN apt update && DEBIAN_FRONTEND=noninteractive eatmydata apt build-dep -yy qemu
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
builddeps:qemu : Depends: gcc-s390x-linux-gnu but it is not installable
Depends: gcc-alpha-linux-gnu but it is not installable
E: Unable to correct problems, you have held broken packages.
Fix by using the --arch-only option suggested here:
https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1866032/comments/1
Suggested-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20210223211115.2971565-1-f4bug@amsat.org>
Message-Id: <20210305092328.31792-10-alex.bennee@linaro.org>
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QEMU has had options to enable control-flow integrity features
for a few months now. Add two sets of build/check/acceptance
jobs to ensure the binary produced is working fine.
The three sets allow testing of x86_64 binaries for x86_64, s390x,
ppc64 and aarch64 targets
[AJB: tweak job names to avoid brands]
Signed-off-by: Daniele Buono <dbuono@linux.vnet.ibm.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210304030948.9367-3-dbuono@linux.vnet.ibm.com>
Message-Id: <20210305092328.31792-9-alex.bennee@linaro.org>
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Define a new variable LD_JOBS, that can be used to select
the maximum number of linking jobs to be executed in parallel.
If the variable is not defined, maintain the default given by
make -j
Currently, make parallelism at build time is based on the number
of cpus available.
This doesn't work well with LTO at linking, because with LTO the
linker has to load in memory all the intermediate object files
for optimization.
The end result is that, if the gitlab runner happens to run two
linking processes at the same time, the job will fail with an
out-of-memory error,
This patch leverages the ability to maintain high parallelism at
compile time, but limit the number of linkers executed in parallel.
Signed-off-by: Daniele Buono <dbuono@linux.vnet.ibm.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20210304030948.9367-2-dbuono@linux.vnet.ibm.com>
Message-Id: <20210305092328.31792-8-alex.bennee@linaro.org>
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This is mostly useful for verifying containers will work on the CI
setup.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210305092328.31792-4-alex.bennee@linaro.org>
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We all know the QEMU command line can become a fiendishly complex
beast. Lets gently prepare our user for the horrors to come by
referencing where other example command lines can be found in the
manual.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20210305092328.31792-3-alex.bennee@linaro.org>
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staging
nbd patches for 2021-03-09
- Add Vladimir as NBD co-maintainer
- Fix reporting of holes in NBD_CMD_BLOCK_STATUS
- Improve command-line parsing accuracy of large numbers (anything going
through qemu_strtosz), including the deprecation of hex+suffix
- Improve some error reporting in the block layer
# gpg: Signature made Tue 09 Mar 2021 15:38:10 GMT
# gpg: using RSA key 71C2CC22B1C4602927D2F3AAA7A16B4A2527436A
# gpg: Good signature from "Eric Blake <eblake@redhat.com>" [full]
# gpg: aka "Eric Blake (Free Software Programmer) <ebb9@byu.net>" [full]
# gpg: aka "[jpeg image of size 6874]" [full]
# Primary key fingerprint: 71C2 CC22 B1C4 6029 27D2 F3AA A7A1 6B4A 2527 436A
* remotes/ericb/tags/pull-nbd-2021-03-09:
block/qcow2: refactor qcow2_update_options_prepare error paths
block/qed: bdrv_qed_do_open: deal with errp
block/qcow2: simplify qcow2_co_invalidate_cache()
block/qcow2: read_cache_sizes: return status value
block/qcow2-bitmap: return status from qcow2_store_persistent_dirty_bitmaps
block/qcow2-bitmap: improve qcow2_load_dirty_bitmaps() interface
block/qcow2: qcow2_get_specific_info(): drop error propagation
blockjob: return status from block_job_set_speed()
block/mirror: drop extra error propagation in commit_active_start()
block: drop extra error propagation for bdrv_set_backing_hd
blockdev: fix drive_backup_prepare() missed error
block: check return value of bdrv_open_child and drop error propagation
utils: Deprecate hex-with-suffix sizes
utils: Improve qemu_strtosz() to have 64 bits of precision
utils: Enhance testsuite for do_strtosz()
nbd: server: Report holes for raw images
MAINTAINERS: add Vladimir as co-maintainer of NBD
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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Keep setting ret close to setting errp and don't merge different error
paths into one. This way it's more obvious that we don't return
error without setting errp.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Message-Id: <20210202124956.63146-15-vsementsov@virtuozzo.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
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Always set errp on failure. The generic bdrv_open_driver supports
driver functions which can return a negative value but forget to set
errp. That's a strange thing. Let's improve bdrv_qed_do_open to not
behave this way. This allows the simplification of code in
bdrv_qed_co_invalidate_cache().
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Message-Id: <20210202124956.63146-14-vsementsov@virtuozzo.com>
[eblake: commit message grammar tweak]
Signed-off-by: Eric Blake <eblake@redhat.com>
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qcow2_do_open correctly sets errp on each failure path. So, we can
simplify code in qcow2_co_invalidate_cache() and drop explicit error
propagation.
Add ERRP_GUARD() as mandated by the documentation in
include/qapi/error.h so that error_prepend() is actually called even if
errp is &error_fatal.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Message-Id: <20210202124956.63146-13-vsementsov@virtuozzo.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
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It's better to return status together with setting errp. It allows to
reduce error propagation.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Message-Id: <20210202124956.63146-12-vsementsov@virtuozzo.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
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It's better to return status together with setting errp. It makes
possible to avoid error propagation.
While being here, put ERRP_GUARD() to fix error_prepend(errp, ...)
usage inside qcow2_store_persistent_dirty_bitmaps() (see the comment
above ERRP_GUARD() definition in include/qapi/error.h)
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Message-Id: <20210202124956.63146-11-vsementsov@virtuozzo.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
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It's recommended for bool functions with errp to return true on success
and false on failure. Non-standard interfaces don't help to understand
the code. The change is also needed to reduce error propagation.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Message-Id: <20210202124956.63146-10-vsementsov@virtuozzo.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
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Don't use error propagation in qcow2_get_specific_info(). For this
refactor qcow2_get_bitmap_info_list, its current interface is rather
weird.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210202124956.63146-9-vsementsov@virtuozzo.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
[eblake: separate local 'tail' variable from 'info_list' parameter]
Signed-off-by: Eric Blake <eblake@redhat.com>
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Better to return status together with setting errp. It allows to avoid
error propagation in the caller.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Message-Id: <20210202124956.63146-8-vsementsov@virtuozzo.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
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Let's check return value of mirror_start_job to check for failure
instead of local_err.
Rename ret to job, as ret is usually integer variable.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Message-Id: <20210202124956.63146-7-vsementsov@virtuozzo.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
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bdrv_set_backing_hd now returns status, let's use it.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Message-Id: <20210202124956.63146-6-vsementsov@virtuozzo.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
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We leak local_err and don't report failure to the caller. It's
definitely wrong, let's fix.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Message-Id: <20210202124956.63146-5-vsementsov@virtuozzo.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
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This patch is generated by cocci script:
@@
symbol bdrv_open_child, errp, local_err;
expression file;
@@
file = bdrv_open_child(...,
- &local_err
+ errp
);
- if (local_err)
+ if (!file)
{
...
- error_propagate(errp, local_err);
...
}
with command
spatch --sp-file x.cocci --macro-file scripts/cocci-macro-file.h \
--in-place --no-show-diff --max-width 80 --use-gitgrep block
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Message-Id: <20210202124956.63146-4-vsementsov@virtuozzo.com>
[eblake: fix qcow2_do_open() to use ERRP_GUARD, necessary as the only
caller to pass allow_none=true]
Signed-off-by: Eric Blake <eblake@redhat.com>
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Supporting '0x20M' looks odd, particularly since we have a 'B' suffix
that is ambiguous for bytes, as well as a less-frequently-used 'E'
suffix for extremely large exibytes. In practice, people using hex
inputs are specifying values in bytes (and would have written
0x2000000, or possibly relied on default_suffix in the case of
qemu_strtosz_MiB), and the use of scaling suffixes makes the most
sense for inputs in decimal (where the user would write 32M). But
rather than outright dropping support for hex-with-suffix, let's
follow our deprecation policy. Sadly, since qemu_strtosz() does not
have an Err** parameter, and plumbing that in would be a much larger
task, we instead go with just directly emitting the deprecation
warning to stderr.
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20210211204438.1184395-4-eblake@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
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We have multiple clients of qemu_strtosz (qemu-io, the opts visitor,
the keyval visitor), and it gets annoying that edge-case testing is
impacted by implicit rounding to 53 bits of precision due to parsing
with strtod(). As an example posted by Rich Jones:
$ nbdkit memory $(( 2**63 - 2**30 )) --run \
'build/qemu-io -f raw "$uri" -c "w -P 3 $(( 2**63 - 2**30 - 512 )) 512" '
write failed: Input/output error
because 9223372035781033472 got rounded to 0x7fffffffc0000000 which is
out of bounds.
It is also worth noting that our existing parser, by virtue of using
strtod(), accepts decimal AND hex numbers, even though test-cutils
previously lacked any coverage of the latter until the previous patch.
We do have existing clients that expect a hex parse to work (for
example, iotest 33 using qemu-io -c "write -P 0xa 0x200 0x400"), but
strtod() parses "08" as 8 rather than as an invalid octal number, so
we know there are no clients that depend on octal. Our use of
strtod() also means that "0x1.8k" would actually parse as 1536 (the
fraction is 8/16), rather than 1843 (if the fraction were 8/10); but
as this was not covered in the testsuite, I have no qualms forbidding
hex fractions as invalid, so this patch declares that the use of
fractions is only supported with decimal input, and enhances the
testsuite to document that.
Our previous use of strtod() meant that -1 parsed as a negative; now
that we parse with strtoull(), negative values can wrap around modulo
2^64, so we have to explicitly check whether the user passed in a '-';
and make it consistent to also reject '-0'. This has the minor effect
of treating negative values as EINVAL (with no change to endptr)
rather than ERANGE (with endptr advanced to what was parsed), visible
in the updated iotest output.
We also had no testsuite coverage of "1.1e0k", which happened to parse
under strtod() but is unlikely to occur in practice; as long as we are
making things more robust, it is easy enough to reject the use of
exponents in a strtod parse.
The fix is done by breaking the parse into an integer prefix (no loss
in precision), rejecting negative values (since we can no longer rely
on strtod() to do that), determining if a decimal or hexadecimal parse
was intended (with the new restriction that a fractional hex parse is
not allowed), and where appropriate, using a floating point fractional
parse (where we also scan to reject use of exponents in the fraction).
The bulk of the patch is then updates to the testsuite to match our
new precision, as well as adding new cases we reject (whether they
were rejected or inadvertently accepted before).
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20210211204438.1184395-3-eblake@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
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Enhance our testsuite coverage of do_strtosz() to cover some things we
know that existing users want to continue working (hex bytes), as well
as some things that accidentally work but shouldn't (hex fractions) or
accidentally fail but that users want to work (64-bit precision on
byte values). This includes fixing a typo in the comment regarding
our parsing near 2^64.
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20210211204438.1184395-2-eblake@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
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When querying image extents for raw image, qemu-nbd reports holes as
zero:
$ qemu-nbd -t -r -f raw empty-6g.raw
$ qemu-img map --output json nbd://localhost
[{ "start": 0, "length": 6442450944, "depth": 0, "zero": true, "data": true, "offset": 0}]
$ qemu-img map --output json empty-6g.raw
[{ "start": 0, "length": 6442450944, "depth": 0, "zero": true, "data": false, "offset": 0}]
Turns out that qemu-img map reports a hole based on BDRV_BLOCK_DATA, but
nbd server reports a hole based on BDRV_BLOCK_ALLOCATED.
The NBD protocol says:
NBD_STATE_HOLE (bit 0): if set, the block represents a hole (and
future writes to that area may cause fragmentation or encounter an
NBD_ENOSPC error); if clear, the block is allocated or the server
could not otherwise determine its status.
qemu-img manual says:
whether the sectors contain actual data or not (boolean field data;
if false, the sectors are either unallocated or stored as
optimized all-zero clusters);
To me, data=false looks compatible with NBD_STATE_HOLE. From user point
of view, getting same results from qemu-nbd and qemu-img is more
important than being more correct about allocation status.
Changing nbd server to report holes using BDRV_BLOCK_DATA makes qemu-nbd
results compatible with qemu-img map:
$ qemu-img map --output json nbd://localhost
[{ "start": 0, "length": 6442450944, "depth": 0, "zero": true, "data": false, "offset": 0}]
Signed-off-by: Nir Soffer <nsoffer@redhat.com>
Message-Id: <20210219160752.1826830-1-nsoffer@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
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Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210304103503.21008-1-vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
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into staging
Aspeed patches :
* New model for the Aspeed LPC controller
* Misc cleanups
# gpg: Signature made Tue 09 Mar 2021 11:54:25 GMT
# gpg: using RSA key A0F66548F04895EBFE6B0B6051A343C7CFFBECA1
# gpg: Good signature from "Cédric Le Goater <clg@kaod.org>" [undefined]
# 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: A0F6 6548 F048 95EB FE6B 0B60 51A3 43C7 CFFB ECA1
* remotes/legoater/tags/pull-aspeed-20210309:
hw/misc: Model KCS devices in the Aspeed LPC controller
hw/misc: Add a basic Aspeed LPC controller model
hw/arm: ast2600: Correct the iBT interrupt ID
hw/arm: ast2600: Set AST2600_MAX_IRQ to value from datasheet
hw/arm: ast2600: Force a multiple of 32 of IRQs for the GIC
hw/arm/aspeed: Fix location of firmware images in documentation
arm/ast2600: Fix SMP booting with -kernel
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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Keyboard-Controller-Style devices for IPMI purposes are exposed via LPC
IO cycles from the BMC to the host.
Expose support on the BMC side by implementing the usual MMIO
behaviours, and expose the ability to inspect the KCS registers in
"host" style by accessing QOM properties associated with each register.
The model caters to the IRQ style of both the AST2600 and the earlier
SoCs (AST2400 and AST2500). The AST2600 allocates an IRQ for each LPC
sub-device, while there is a single IRQ shared across all subdevices on
the AST2400 and AST2500.
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20210302014317.915120-6-andrew@aj.id.au>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
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This is a very minimal framework to access registers which are used to
configure the AHB memory mapping of the flash chips on the LPC HC
Firmware address space.
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Message-Id: <20210302014317.915120-5-andrew@aj.id.au>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
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The AST2600 allocates distinct GIC IRQs for the LPC subdevices such as
the iBT device. Previously on the AST2400 and AST2500 the LPC subdevices
shared a single LPC IRQ.
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20210302014317.915120-4-andrew@aj.id.au>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
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The datasheet says we have 197 IRQs allocated, and we need more than 128
to describe IRQs from LPC devices. Raise the value now to allow
modelling of the LPC devices.
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20210302014317.915120-3-andrew@aj.id.au>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
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This appears to be a requirement of the GIC model. The AST2600 allocates
197 GIC IRQs, which we will adjust shortly.
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20210302014317.915120-2-andrew@aj.id.au>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
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