Highlights:
* Improvements on global property error handling
* Translate -cpu options to global properties
* LMCE support
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=sBs3
-----END PGP SIGNATURE-----
Merge remote-tracking branch 'remotes/ehabkost/tags/x86-pull-request' into staging
x86 and machine queue, 2016-07-07
Highlights:
* Improvements on global property error handling
* Translate -cpu options to global properties
* LMCE support
# gpg: Signature made Thu 07 Jul 2016 20:59:01 BST
# gpg: using RSA key 0x2807936F984DC5A6
# gpg: Good signature from "Eduardo Habkost <ehabkost@redhat.com>"
# Primary key fingerprint: 5A32 2FD5 ABC4 D3DB ACCF D1AA 2807 936F 984D C5A6
* remotes/ehabkost/tags/x86-pull-request:
target-i386: Enable LMCE for '-cpu host' if supported by host
target-i386: Publish advised value of MSR_IA32_FEATURE_CONTROL via fw_cfg
target-i386: kvm: Add basic Intel LMCE support
target-i386: Report hyperv feature words through qom
target-i386: Show host and VM TSC frequencies on mismatch
pc: Parse CPU features only once
arm: virt: Parse cpu_model only once
cpu: Use CPUClass->parse_features() as convertor to global properties
target-i386: Avoid using locals outside their scope
target-i386: TCG can support CPUID.07H:EBX.erms
target-sparc: Use sparc_cpu_parse_features() directly
vl: Set errp to &error_abort on machine compat_props
machine: Add machine_register_compat_props() function
qdev: GlobalProperty.errp field
qdev: Eliminate qemu_add_globals() function
qdev: Don't stop applying globals on first error
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Commit "9d8256e virgl: pass whole GL scanout dimensions" missed the
opengl code path for gtk versions >= 3.16. Update that one too and
fix the build with recent gtk versions.
Reported-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 1467876563-1351-1-git-send-email-kraxel@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
For clang before 3.5, -fno-integrated-as does not exist,
so the workaround in 5f6f0e27fb fails to build.
Use clang's default assembler for linux-user/safe-syscall.S,
and explicitly change to use the system assembler for the
option roms.
Tested-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
In user-mode emulation Translation Block can consist of 2 guest pages.
In that case QEMU also mprotects 2 host pages that are dedicated for
guest memory, containing instructions. QEMU detects self-modifying code
with SEGFAULT signal processing.
In case if instruction in 1st page is modifying memory of 2nd
page (or vice versa) QEMU will mark 2nd page with PAGE_WRITE,
invalidate TB, generate new TB contatining 1 guest instruction and
exit to CPU loop. QEMU won't call mprotect, and new TB will cause
same SEGFAULT. Page will have both PAGE_WRITE_ORG and PAGE_WRITE
flags, so QEMU will handle the signal as guest binary problem,
and exit with guest SEGFAULT.
Solution is to do following: In case if current TB was invalidated
continue to invalidate TBs from remaining guest pages and mark pages
as PAGE_WRITE. After that disable host page protection with mprotect.
If current tb was invalidated longjmp to main loop. That is more
efficient, since we won't get SEGFAULT when executing new TB.
Reviewed-by: Sergey Fedorov <sergey.fedorov@linaro.org>
Signed-off-by: Stanislav Shmarov <snarpix@gmail.com>
Message-Id: <1467880392-1043630-1-git-send-email-snarpix@gmail.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
As it currently stands, QEMU does not properly handle self-modifying code
when the write is unaligned and crosses a page boundary. The procedure
for handling a write to the current translation block is to write-protect
the current translation block, catch the write, split up the translation
block into the current instruction (which remains write-protected so that
the current instruction is not modified) and the remaining instructions
in the translation block, and then restore the CPU state to before the
write occurred so the write will be retried and successfully executed.
However, since unaligned writes across pages are split into one-byte
writes for simplicity, writes to the second page (which is not the
current TB) may succeed before a write to the current TB is attempted,
and since these writes are not invalidated before resuming state after
splitting the TB, these writes will be performed a second time, thus
corrupting the second page. Credit goes to Patrick Hulin for
discovering this.
In recent 64-bit versions of Windows running in emulated mode, this
results in either being very unstable (a BSOD after a couple minutes of
uptime), or being entirely unable to boot. Windows performs one or more
8-byte unaligned self-modifying writes (xors) which intersect the end
of the current TB and the beginning of the next TB, which runs into the
aforementioned issue. This commit fixes that issue by making the
unaligned write loop perform the writes in forwards order, instead of
reverse order. This way, QEMU immediately tries to write to the current
TB, and splits the TB before any write to the second page is executed.
The write then proceeds as intended. With this patch applied, I am able
to boot and use Windows 7 64-bit and Windows 10 64-bit in QEMU without
KVM.
Per Richard Henderson's input, this patch also ensures the second page
is in the TLB before executing the write loop, to ensure the second
page is mapped.
The original discussion of the issue is located at
http://lists.nongnu.org/archive/html/qemu-devel/2014-08/msg02161.html.
Signed-off-by: Samuel Damashek <samuel.damashek@invincea.com>
Message-Id: <20160706182652.16190-1-samuel.damashek@invincea.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
[rth: Split out from the original patch.]
Signed-off-by: Samuel Damashek <samuel.damashek@invincea.com>
Message-Id: <20160706182652.16190-1-samuel.damashek@invincea.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Clang insists that "cmp" is ambiguous with a memory destination,
requiring an explicit size suffix.
There was a true error in the use of .cfi_def_cfa_offset in the
epilogue, but changing to use the proper .cfi_adjust_cfa_offset
runs afoul of a clang bug wrt .cfi_restore_state. Better to
fold the two epilogues so that we don't trigger the bug.
Signed-off-by: Richard Henderson <rth@twiddle.net>
If -cpu host is used, LMCE will be automatically enabled when it's
supported by host.
Signed-off-by: Haozhong Zhang <haozhong.zhang@intel.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
It's a prerequisite that certain bits of MSR_IA32_FEATURE_CONTROL should
be set before some features (e.g. VMX and LMCE) can be used, which is
usually done by the firmware. This patch adds a fw_cfg file
"etc/msr_feature_control" which contains the advised value of
MSR_IA32_FEATURE_CONTROL and can be used by guest firmware (e.g. SeaBIOS).
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Haozhong Zhang <haozhong.zhang@intel.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
This patch adds the support to inject SRAR and SRAO as LMCE, i.e. they
are injected to only one VCPU rather than broadcast to all VCPUs. As KVM
reports LMCE support on Intel platforms, this features is only available
on Intel platforms.
LMCE is disabled by default and can be enabled/disabled by cpu option
'lmce=on/off'.
Signed-off-by: Ashok Raj <ashok.raj@intel.com>
[Haozhong: Enable LMCE only on Intel platforms
Disable LMCE by default and add a cpu option 'lmce'
Handle the error if LMCE is enabled w/o host support
Remove MCG_LMCE_P from MCE_CAP_DEF
Add migration support for LMCE
Minor code style changes]
Signed-off-by: Haozhong Zhang <haozhong.zhang@intel.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
This change adds hyperv feature words report through qom rpc.
When VM is configured with hyperv features enabled
libvirt will check that required feature words are set
in cpuid leaf 40000003 through qom request.
Currently qemu does not report hyperv feature words
which prevents windows guests from starting with libvirt.
To avoid conflicting with current hyperv properties all added feature
words cannot be set directly with -cpu +feature yet.
Signed-off-by: Evgeny Yakovlev <eyakovlev@virtuozzo.com>
Signed-off-by: Denis V. Lunev <den@openvz.org>
CC: Paolo Bonzini <pbonzini@redhat.com>
CC: Richard Henderson <rth@twiddle.net>
CC: Eduardo Habkost <ehabkost@redhat.com>
CC: Marcelo Tosatti <mtosatti@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Improve the TSC frequency mismatch warning to show the host and
VM TSC frequencies.
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Considering that features are converted to global properties and
global properties are automatically applied to every new instance
of created CPU (at object_new() time), there is no point in
parsing cpu_model string every time a CPU created. So move
parsing outside CPU creation loop and do it only once.
Parsing also should be done before any CPU is created so that
features would affect the first CPU a well.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Considering that features are converted to global properties and
global properties are automatically applied to every new instance
of created CPU (at object_new() time), there is no point in
parsing cpu_model string every time a CPU created. So move
parsing outside CPU creation loop and do it only once.
Parsing also should be done before any CPU is created so that
features would affect the first CPU a well.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Currently CPUClass->parse_features() is used to parse -cpu
features string and set properties on created CPU instances.
But considering that features specified by -cpu apply to every
created CPU instance, it doesn't make sense to parse the same
features string for every CPU created. It also makes every target
that cares about parsing features string explicitly call
CPUClass->parse_features() parser, which gets in a way if we
consider using generic device_add for CPU hotplug as device_add
has not a clue about CPU specific hooks.
Turns out we can use global properties mechanism to set
properties on every created CPU instance for a given type. That
way it's possible to convert CPU features into a set of global
properties for CPU type specified by -cpu cpu_model and common
Device.device_post_init() will apply them to CPU of given type
automatically regardless whether it's manually created CPU or CPU
created with help of device_add.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
x86_cpu_parse_featurestr has a "val = num;" assignment just before num
goes out of scope. Push num up to fix the issue.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
ERMS just says "rep movsb" and "rep stosb" are fast. It does not
imply any new instruction, so we can support it easily.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Make SPARC target use sparc_cpu_parse_features() directly
so it won't get in the way of switching other propertified
targets to handling features as global properties.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Use the new GlobalProperty.errp field to handle compat_props
errors.
Example output before this change:
(with an intentionally broken entry added to PC_COMPAT_1_3 just
for testing)
$ qemu-system-x86_64 -machine pc-1.3
qemu-system-x86_64: hw/core/qdev-properties.c:1091: qdev_prop_set_globals_for_type: Assertion `prop->user_provided' failed.
Aborted (core dumped)
After:
$ qemu-system-x86_64 -machine pc-1.3
Unexpected error in x86_cpuid_set_vendor() at /home/ehabkost/rh/proj/virt/qemu/target-i386/cpu.c:1688:
qemu-system-x86_64: can't apply global cpu.vendor=x: Property '.vendor' doesn't take value 'x'
Aborted (core dumped)
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
The new field will allow error handling to be configured by
qdev_prop_register_global() callers: &error_fatal and
&error_abort can be used to make QEMU exit or abort if any errors
are reported when applying the properties.
While doing it, change the error message from "global %s.%s=%s
ignored" to "can't apply global %s.%s=%s".
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
The function is just a helper to handle the -global options, it
can stay in vl.c like most qemu_opts_foreach() calls.
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
qdev_prop_set_globals_for_type() stops applying global properties
on the first error. It is a leftover from when QEMU exited on any
error when applying global property. Commit 25f8dd9 changed the
fatal error to a warning, but neglected to drop the stopping.
Fix that.
For example, the following command-line will not set CPUID level
to 3, but will warn only about "x86_64-cpu.vendor" being ignored.
$ ./x86_64-softmmu/qemu-system-x86_64 \
-global x86_64-cpu.vendor=x \
-global x86_64-cpu.level=3
qemu-system-x86_64: Warning: global x86_64-cpu.vendor=x ignored: Property '.vendor' doesn't take value 'x'
Fix this by not returning from qdev_prop_set_globals_for_type()
on the first error.
Cc: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
* fix a wrong variable type for A64 SYS_HEAPINFO semihosting call
* xlnx_dp: fix iffy xlnx_dp_aux_push_tx_fifo
* aux: fix break that wanted to break two levels out
* aux: Rename aux.[ch] to auxbus.[ch] for the benefit of Windows
* hw/block/m25p80: fix resource leak
* i.MX: split the GPT timer implementation into per SOC definitions
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=uKU5
-----END PGP SIGNATURE-----
Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20160707' into staging
target-arm queue:
* fix a wrong variable type for A64 SYS_HEAPINFO semihosting call
* xlnx_dp: fix iffy xlnx_dp_aux_push_tx_fifo
* aux: fix break that wanted to break two levels out
* aux: Rename aux.[ch] to auxbus.[ch] for the benefit of Windows
* hw/block/m25p80: fix resource leak
* i.MX: split the GPT timer implementation into per SOC definitions
# gpg: Signature made Thu 07 Jul 2016 14:48:09 BST
# gpg: using RSA key 0x3C2525ED14360CDE
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>"
# gpg: aka "Peter Maydell <pmaydell@gmail.com>"
# gpg: aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>"
# Primary key fingerprint: E1A5 C593 CD41 9DE2 8E83 15CF 3C25 25ED 1436 0CDE
* remotes/pmaydell/tags/pull-target-arm-20160707:
i.MX: split the GPT timer implementation into per SOC definitions
hw/block/m25p80: fix resource leak
aux: Rename aux.[ch] to auxbus.[ch] for the benefit of Windows
aux: fix break that wanted to break two levels out
xlnx_dp: fix iffy xlnx_dp_aux_push_tx_fifo
target-arm/arm-semi.c: In SYS_HEAPINFO use correct type for 'limit'
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
In various Freescale SOCs, the GPT timers can be configured to select
its input clock.
Depending on the SOC the set of available input clocks may vary.
The actual single GPT definition was no good enough and because of it
booting the sabrelite board with a i.MX6DL device tree would fail
because of an incorrect input clock definition for the i.MX6DL SOC.
This patch fixes the i.MX6DL boot failure by adding the ability to
define a different set of input clocks depending on the considered SOC.
A different class has been defined for i.MX25, i.MX31 and i.MX6 each with
its specific set of input clocks.
The patch has been tested by booting KZM, i.MX25 PDK, i.MX6Q sabrelite
and i.MX6DL sabrelite.
Signed-off-by: Jean-Christophe Dubois <jcd@tribudubois.net>
Message-id: 1467325619-8374-1-git-send-email-jcd@tribudubois.net
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
[PMM: fixed spacing round '/' operator]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
These two are spot by Coverity 1357232 and 1357233.
Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>
Message-id: 1467684998-12076-1-git-send-email-zhaoshenglong@huawei.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
On Windows 'aux.*' is a reserved name and cannot be used for
filenames; see
https://msdn.microsoft.com/en-gb/library/windows/desktop/aa365247(v=vs.85).aspx
This prevents cloning the QEMU git repo on Windows:
C:\Java\sources\kvm> git clone https://github.com/qemu/qemu.git
Cloning into 'qemu'...
remote: Counting objects: 279563, done.
remote: Total 279563 (delta 0), reused 0 (delta 0), pack-reused 279563R
Receiving objects: 100% (279563/279563), 122.45 MiB | 3.52 MiB/s, done.
Resolving deltas: 100% (221942/221942), done.
Checking connectivity... done.
error: unable to create file hw/misc/aux.c (No such file or directory)
error: unable to create file include/hw/misc/aux.h (No such file or directory)
Checking out files: 100% (4795/4795), done.
fatal: unable to checkout working tree
warning: Clone succeeded, but checkout failed.
You can inspect what was checked out with 'git status'
and retry the checkout with 'git checkout -f HEAD'
(bug https://bugs.launchpad.net/bugs/1595240)
Rename the offending files for the benefit of Windows.
Reported-by: Алексей Курган <akurgan@yandex.ru>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Wei Huang <wei@redhat.com>
Tested-by: KONRAD Frederic <fred.konrad@greensocs.com>
Message-id: 1467377145-32385-1-git-send-email-peter.maydell@linaro.org
The last "ret = AUX_I2C_NACK;" is dead, because it is always overridden
by AUX_I2C_ACK. What really the code wants is to jump out of the switch
statement, and a "return" will not cut it because it would omit a debug
printf.
Change the logic so that we can break out of the while loop. For clarity,
hoist the bus->last_* assignments up, right after i2c_start_transfer.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
xlnx_dp_aux_push_tx_fifo takes an immediate uint8_t and a buffer length,
which must be 1 because that is how many uint8_t's fit in a uint8_t.
Sure enough, that is what xlnx_dp_write passes to it, but the function
is just weird. Therefore, make xlnx_dp_aux_push_tx_fifo look like
xlnx_dp_aux_push_rx_fifo, taking a pointer to the buffer.
Reported by Coverity.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
In commit f5666418c4 most of the SYS_HEAPINFO implementation was
fixed to use target_ulong rather than uint32_t, but the 'limit'
variable was not changed.
Reported-by: Laurent Desnogues <laurent.desnogues@gmail.com>
Reviewed-by: Laurent Desnogues <laurent.desnogues@gmail.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1467650942-28706-1-git-send-email-peter.maydell@linaro.org
Version: GnuPG v1
iQEcBAABAgAGBQJXffbYAAoJEO8Ells5jWIRZnAH/2bleryOC4i6Pwz7cNpX07MQ
YmJ97K6RueVcYjj7pSi4l8nzv18K0k43x04ST6WIpHbRf07RIJIBOVn/f8xUnNo/
EonhPgYWZXZX7h9EWnjUWccKU8ReQO06lUi2H7XX6f6Ba3maG2A4HCvhraE+noIr
pkM4Qj6niD+i6hZsznmhuLWUE+ynt2JdmBIxxG+e12t/Hq5vW7IYPj6Y1IQia9r9
vkz2wWmmiVTty6g5d/pu8yyWt+b2ob8cQ0OoRrqr1uNF/h4uWcUlgUZEe/DJER3M
u+s5xVKLM4FK+w0grBKMCDzmRsjixV42tcS0H8LABpdRce8PINOmpsO3QI+Ul5g=
=YU37
-----END PGP SIGNATURE-----
Merge remote-tracking branch 'remotes/jasowang/tags/net-pull-request' into staging
# gpg: Signature made Thu 07 Jul 2016 07:29:44 BST
# gpg: using RSA key 0xEF04965B398D6211
# gpg: Good signature from "Jason Wang (Jason Wang on RedHat) <jasowang@redhat.com>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 215D 46F4 8246 689E C77F 3562 EF04 965B 398D 6211
* remotes/jasowang/tags/net-pull-request:
tap: vhost busy polling support
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This patch add the capability of basic vhost net busy polling which is
supported by recent kernel. User could configure the maximum number of
us that could be spent on busy polling through a new property of tap
"poll-us".
Cc: Greg Kurz <groug@kaod.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=BgpV
-----END PGP SIGNATURE-----
Merge remote-tracking branch 'remotes/armbru/tags/pull-qapi-2016-07-06' into staging
QAPI patches for 2016-07-06
# gpg: Signature made Wed 06 Jul 2016 10:00:51 BST
# gpg: using RSA key 0x3870B400EB918653
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>"
# gpg: aka "Markus Armbruster <armbru@pond.sub.org>"
# Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867 4E5F 3870 B400 EB91 8653
* remotes/armbru/tags/pull-qapi-2016-07-06:
replay: Use new QAPI cloning
sockets: Use new QAPI cloning
qapi: Add new clone visitor
qapi: Add new visit_complete() function
tests: Factor out common code in qapi output tests
tests: Clean up test-string-output-visitor
qmp-output-visitor: Favor new visit_free() function
string-output-visitor: Favor new visit_free() function
qmp-input-visitor: Favor new visit_free() function
string-input-visitor: Favor new visit_free() function
opts-visitor: Favor new visit_free() function
qapi: Add new visit_free() function
qapi: Add parameter to visit_end_*
qemu-img: Don't leak errors when outputting JSON
qapi: Improve use of qmp/types.h
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Rather than rolling our own clone via an expensive conversion
in and back out of QObject, use the new clone visitor.
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1465490926-28625-16-git-send-email-eblake@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Rather than rolling our own clone via an expensive conversion
in and back out of QObject, use the new clone visitor.
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1465490926-28625-15-git-send-email-eblake@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
We have a couple places in the code base that want to deep-clone
one QAPI object into another, and they were resorting to serializing
the struct out to QObject then reparsing it. A much more efficient
version can be done by adding a new clone visitor.
Since cloning is still relatively uncommon, expose the use of the
new visitor via a QAPI_CLONE() macro that takes care of type-punning
the underlying function pointer, rather than generating lots of
unused functions for types that won't be cloned. And yes, we're
relying on the compiler treating all pointers equally, even though
a strict C program cannot portably do so - but we're not the first
one in the qemu code base to expect it to work (hello, glib!).
The choice of adding a fourth visitor type deserves some explanation.
On the surface, the clone visitor is mostly an input visitor (it
takes arbitrary input - in this case, another QAPI object - and
creates a new QAPI object during the course of the visit). But
ever since commit da72ab0 consolidated enum visits based on the
visitor type, using VISITOR_INPUT would cause us to run
visit_type_str(), even though for cloning there is nothing to do
(we just copy the enum value across, without regards to its mapping
to strings). Also, since our input happens to be a QAPI object,
we can also satisfy the internal checks for VISITOR_OUTPUT. So in
the end, I settled with a new VISITOR_CLONE, and chose its value
such that many internal checks can use 'v->type & mask', sticking
to 'v->type == value' where the difference matters.
Note that we can only clone objects (including alternates) and lists,
not built-ins or enums. The visitor core hides integer width from
the actual visitor (since commit 04e070d), and as long as that's the
case, we can't clone top-level integers. Then again, those can
always be cloned by direct copy, since they are not objects with
deep pointers, so it's no real loss. And restricting cloning to
just objects and lists is cleaner than restricting it to non-integers.
As such, I documented that the clone visitor is for direct use only
by code internal to QAPI, and should not be used on incomplete objects
(other than a hack to work around the fact that we allow NULL in place
of "" in visit_type_str() in other output visitors). Note that as
written, the clone visitor will never fail on a complete object.
Scalars (including enums) not at the root of the clone copy just fine
with no additional effort while visiting the scalar, by virtue of a
g_memdup() each time we push another struct onto the stack. Cloning
a string requires deduplication of a pointer, which means it can also
provide the guarantee of an input visitor of never producing NULL
even when still accepting NULL in place of "" the way the QMP output
visitor does.
Cloning an 'any' type could be possible by incrementing the QObject
refcnt, but it's not obvious whether that is better than implementing
a QObject deep clone. So for now, we document it as unsupported,
and intentionally omit the .type_any() callback to let a developer
know their usage needs implementation.
Add testsuite coverage for several different clone situations, to
ensure that the code is working. I also tested that valgrind was
happy with the test.
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1465490926-28625-14-git-send-email-eblake@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Making each output visitor provide its own output collection
function was the only remaining reason for exposing visitor
sub-types to the rest of the code base. Add a polymorphic
visit_complete() function which is a no-op for input visitors,
and which populates an opaque pointer for output visitors. For
maximum type-safety, also add a parameter to the output visitor
constructors with a type-correct version of the output pointer,
and assert that the two uses match.
This approach was considered superior to either passing the
output parameter only during construction (action at a distance
during visit_free() feels awkward) or only during visit_complete()
(defeating type safety makes it easier to use incorrectly).
Most callers were function-local, and therefore a mechanical
conversion; the testsuite was a bit trickier, but the previous
cleanup patch minimized the churn here.
The visit_complete() function may be called at most once; doing
so lets us use transfer semantics rather than duplication or
ref-count semantics to get the just-built output back to the
caller, even though it means our behavior is not idempotent.
Generated code is simplified as follows for events:
|@@ -26,7 +26,7 @@ void qapi_event_send_acpi_device_ost(ACP
| QDict *qmp;
| Error *err = NULL;
| QMPEventFuncEmit emit;
|- QmpOutputVisitor *qov;
|+ QObject *obj;
| Visitor *v;
| q_obj_ACPI_DEVICE_OST_arg param = {
| info
|@@ -39,8 +39,7 @@ void qapi_event_send_acpi_device_ost(ACP
|
| qmp = qmp_event_build_dict("ACPI_DEVICE_OST");
|
|- qov = qmp_output_visitor_new();
|- v = qmp_output_get_visitor(qov);
|+ v = qmp_output_visitor_new(&obj);
|
| visit_start_struct(v, "ACPI_DEVICE_OST", NULL, 0, &err);
| if (err) {
|@@ -55,7 +54,8 @@ void qapi_event_send_acpi_device_ost(ACP
| goto out;
| }
|
|- qdict_put_obj(qmp, "data", qmp_output_get_qobject(qov));
|+ visit_complete(v, &obj);
|+ qdict_put_obj(qmp, "data", obj);
| emit(QAPI_EVENT_ACPI_DEVICE_OST, qmp, &err);
and for commands:
| {
| Error *err = NULL;
|- QmpOutputVisitor *qov = qmp_output_visitor_new();
| Visitor *v;
|
|- v = qmp_output_get_visitor(qov);
|+ v = qmp_output_visitor_new(ret_out);
| visit_type_AddfdInfo(v, "unused", &ret_in, &err);
|- if (err) {
|- goto out;
|+ if (!err) {
|+ visit_complete(v, ret_out);
| }
|- *ret_out = qmp_output_get_qobject(qov);
|-
|-out:
| error_propagate(errp, err);
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1465490926-28625-13-git-send-email-eblake@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Create a new visitor_get() function to capture common
actions taken in collecting output from an output visitor,
to make it easier to refactor the output visitors in a
later patch.
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1465490926-28625-12-git-send-email-eblake@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Use &error_abort and error_free_or_abort() in more places, use
the generated qapi_free_intList() instead of open-coding it,
reduce the scope of some variables, avoid code duplication
during test setup with visitor_output_setup_internal(), and
copy the visitor_reset() concept from the qmp-output test to
the string-output test.
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1465490926-28625-11-git-send-email-eblake@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Now that we have a polymorphic visit_free(), we no longer need
qmp_output_visitor_cleanup(); however, we still need to
expose the subtype for qmp_output_get_qobject().
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1465490926-28625-10-git-send-email-eblake@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Now that we have a polymorphic visit_free(), we no longer need
string_output_visitor_cleanup(); however, we still need to
expose the subtype for string_output_get_string().
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1465490926-28625-9-git-send-email-eblake@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Now that we have a polymorphic visit_free(), we no longer need
qmp_input_visitor_cleanup(); which in turn means we no longer
need to return a subtype from qmp_input_visitor_new() nor a
public upcast function.
Generated code changes to qmp-marshal.c look like:
|@@ -52,11 +52,10 @@ void qmp_marshal_add_fd(QDict *args, QOb
| {
| Error *err = NULL;
| AddfdInfo *retval;
|- QmpInputVisitor *qiv = qmp_input_visitor_new(QOBJECT(args), true);
| Visitor *v;
| q_obj_add_fd_arg arg = {0};
|
|- v = qmp_input_get_visitor(qiv);
|+ v = qmp_input_visitor_new(QOBJECT(args), true);
| visit_start_struct(v, NULL, NULL, 0, &err);
| if (err) {
| goto out;
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1465490926-28625-8-git-send-email-eblake@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Now that we have a polymorphic visit_free(), we no longer need
string_input_visitor_cleanup(); which in turn means we no longer
need to return a subtype from string_input_visitor_new() nor a
public upcast function.
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1465490926-28625-7-git-send-email-eblake@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Now that we have a polymorphic visit_free(), we no longer need
opts_visitor_cleanup(); which in turn means we no longer need
to return a subtype from opts_visitor_new() nor a public upcast
function.
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1465490926-28625-6-git-send-email-eblake@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
