Right now, users of qemu_co_sleep_ns_wakeable are simply passing
a pointer to QemuCoSleepState by reference to the function. But
QemuCoSleepState really is just a Coroutine*; making the
content of the struct public is just as efficient and lets us
skip the user_state_pointer indirection.
Since the usage is changed, take the occasion to rename the
struct to QemuCoSleep.
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 20210517100548.28806-6-pbonzini@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
All callers of qemu_co_sleep_wake are checking whether they are passing
a NULL argument inside the pointer-to-pointer: do the check in
qemu_co_sleep_wake itself.
As a side effect, qemu_co_sleep_wake can be called more than once and
it will only wake the coroutine once; after the first time, the argument
will be set to NULL via *sleep_state->user_state_pointer. However, this
would not be safe unless co_sleep_cb keeps using the QemuCoSleepState*
directly, so make it go through the pointer-to-pointer instead.
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 20210517100548.28806-4-pbonzini@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
The lifetime of the timer is well-known (it cannot outlive
qemu_co_sleep_ns_wakeable, because it's deleted by the time the
coroutine resumes), so it is not necessary to place it on the heap.
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 20210517100548.28806-2-pbonzini@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Quote docs/devel/style.rst (section "Automatic memory deallocation"):
* Variables declared with g_auto* MUST always be initialized,
otherwise the cleanup function will use uninitialized stack memory
Initialize @name properly to get rid of the compilation error (using
gcc-7.3.0 on CentOS):
../hw/remote/proxy.c: In function 'pci_proxy_dev_realize':
/usr/include/glib-2.0/glib/glib-autocleanups.h:28:3: error: 'name' may be used uninitialized in this function [-Werror=maybe-uninitialized]
g_free (*pp);
^~~~~~~~~~~~
../hw/remote/proxy.c:350:30: note: 'name' was declared here
g_autofree char *name;
^~~~
Signed-off-by: Zenghui Yu <yuzenghui@huawei.com>
Reviewed-by: Jagannathan Raman <jag.raman@oracle.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Miroslav Rezanina <mrezanin@redhat.com>
Message-id: 20210312112143.1369-1-yuzenghui@huawei.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
scripts/simplebench improvements for 2021-05-04
# gpg: Signature made Tue 04 May 2021 09:45:15 BST
# gpg: using RSA key 8B9C26CDB2FD147C880E86A1561F24C1F19F79FB
# gpg: Good signature from "Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>" [unknown]
# 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: 8B9C 26CD B2FD 147C 880E 86A1 561F 24C1 F19F 79FB
* remotes/vsementsov/tags/pull-simplebench-2021-05-04:
MAINTAINERS: update Benchmark util: add git tree
simplebench/bench-backup: add --drop-caches argument
simplebench/bench-backup: add --count and --no-initial-run
simplebench/bench-backup: support qcow2 source files
simplebench/bench_block_job: handle error in BLOCK_JOB_COMPLETED
simplebench/bench-backup: add target-cache argument
simplebench/bench-backup: add --compressed option
simplebench: bench_one(): support count=1
simplebench: bench_one(): add slow_limit argument
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The vdagent protocol allows the guest agent (spice-vdagent) and the
spice client exchange messages to implement features which require
guest cooperation, for example clipboard support.
This is a qemu implementation of the spice client side. This allows
the spice guest agent talk to qemu directly when not using the spice
protocol.
usage: qemu \
-chardev qemu-vdagent,id=vdagent \
-device virtserialport,chardev=vdagent,name=com.redhat.spice.0
This patch adds just the protocol basics: initial handshake and
capability negotiation. The following patches will add actual
functionality and also add fields to the initially empty
ChardevVDAgent qapi struct.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 20210519053940.1888907-1-kraxel@redhat.com
Message-Id: <20210519053940.1888907-5-kraxel@redhat.com>
Xtensa cores may or may not have hardware support for unaligned memory
access. Remove TARGET_ALIGNED_ONLY=y from all xtensa configurations and
pass MO_ALIGN in memory access flags for all operations that would raise
an exception.
Simplify use of gen_load_store_alignment by passing access size and
alignment requirements in single parameter.
Drop condition from xtensa_cpu_do_unaligned_access and replace it with
assertion.
Add a test.
Suggested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
l32ex does memory access as all regular load/store operations at CRING
level. Fix apparent pasto from l32e that caused it to use RING instead.
This is a correctness issue, not a security issue, because in the worst
case the privilege level of memory access may be lowered, resulting in
an exception when the correct implementation would've succeeded.
In no case it would allow memory access that would've raised an
exception in the correct implementation.
Cc: qemu-stable@nongnu.org
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
target/xtensa used to generate an extra EXCP_DEBUG exception before the
first instruction executed after an interrupt or an exception is taken
to allow single-stepping that instruction in the debugger.
This is no longer needed after the following commits:
a7ba744f40 ("tcg/cpu-exec: precise single-stepping after an exception")
ba3c35d9c4 ("tcg/cpu-exec: precise single-stepping after an interrupt")
Drop exception state tracking/extra EXCP_DEBUG generation code.
Cc: qemu-stable@nongnu.org # v5.1, v5.2, v6.0
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
QAPI patches patches for 2021-05-20
# gpg: Signature made Thu 20 May 2021 16:10:21 BST
# gpg: using RSA key 354BC8B3D7EB2A6B68674E5F3870B400EB918653
# gpg: issuer "armbru@redhat.com"
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>" [full]
# gpg: aka "Markus Armbruster <armbru@pond.sub.org>" [full]
# Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867 4E5F 3870 B400 EB91 8653
* remotes/armbru/tags/pull-qapi-2021-05-20:
qapi/parser: add docstrings
qapi/parser: allow 'ch' variable name
qapi/parser: Remove superfluous list comprehension
qapi/parser: add type hint annotations
qapi/parser: Rework _check_pragma_list_of_str as a TypeGuard
qapi/parser: Fix token membership tests when token can be None
qapi: add must_match helper
qapi/parser: Use @staticmethod where appropriate
qapi/parser: assert object keys are strings
qapi/parser: enforce all top-level expressions must be dict in _parse()
qapi/parser: Assert lexer value is a string
qapi/parser: factor parsing routine into method
qapi/source: Remove line number from QAPISourceInfo initializer
qapi: Add test for nonexistent schema file
qapi/parser: Don't try to handle file errors
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
pull-bsd-user-20210511 is the next round of cleanups to bsd-user in merging the
bsd-user fork into qemu. It contains a number of style commits, as well as 3
commits that start to change things: Some unused files are deleted, building the
sparc and sparc64 targets are removed, and a structure is renamed.
The next set of pull requests will start to execute the following plan:
1. Move existing code around to have a structure similar to the bsd-user fork.
2. Incrementally merge groups of system calls, focused on making x86 work.
3. Once the groups of system calls are all merged, additional platforms will
be added back.
4. Concurrently, as changes are requested as part of the merge happen, those
changes will be merged into the fork. An experimental merge to tip of master
is under test and is what will be updated.
5. Eventually, there will be no diference, and the bsd-user fork will only
be a staging area for cutting-edge features prior to upstreaming into
qemu mainline.
The bsd-user code in qemu has a lot of style issues. This cleans up a number in
the files touched. However, the checkpatch.pl detects some incremental issues in
the commits. The following are expected, but are corrected in later hashes in
this branch. MAINTAINERS does not need to be updated, since all the files added
or deleted are covered under existing regexp in MAINTAINERS.
Checking all commits since f9a576a818044133f8564e0d243ebd97df0b3280...
d60c3b932e2fa06aba5d7aa1c451b5d287095dc8:101: ERROR: consider using qemu_strtol in preference to strtol
d60c3b932e2fa06aba5d7aa1c451b5d287095dc8:142: ERROR: braces {} are necessary for all arms of this statement
d60c3b932e2fa06aba5d7aa1c451b5d287095dc8:145: ERROR: braces {} are necessary for all arms of this statement
total: 3 errors, 0 warnings, 119 lines checked
b4bebeee1dee8d333bfa105a6c28fec5eb34b147:148: WARNING: line over 80 characters
b4bebeee1dee8d333bfa105a6c28fec5eb34b147:330: ERROR: braces {} are necessary for all arms of this statement
b4bebeee1dee8d333bfa105a6c28fec5eb34b147:340: ERROR: braces {} are necessary for all arms of this statement
b4bebeee1dee8d333bfa105a6c28fec5eb34b147:381: ERROR: space prohibited between function name and open parenthesis '('
b4bebeee1dee8d333bfa105a6c28fec5eb34b147:390: ERROR: spaces required around that '<' (ctx:VxV)
b4bebeee1dee8d333bfa105a6c28fec5eb34b147:408: WARNING: Block comments use a leading /* on a separate line
b4bebeee1dee8d333bfa105a6c28fec5eb34b147:409: WARNING: Block comments use * on subsequent lines
b4bebeee1dee8d333bfa105a6c28fec5eb34b147:409: WARNING: Block comments use a trailing */ on a separate line
b4bebeee1dee8d333bfa105a6c28fec5eb34b147:441: WARNING: line over 80 characters
b4bebeee1dee8d333bfa105a6c28fec5eb34b147:445: WARNING: line over 80 characters
b4bebeee1dee8d333bfa105a6c28fec5eb34b147:502: ERROR: line over 90 characters
b4bebeee1dee8d333bfa105a6c28fec5eb34b147:551: ERROR: space required after that ',' (ctx:VxV)
b4bebeee1dee8d333bfa105a6c28fec5eb34b147:552: ERROR: space required after that ',' (ctx:VxV)
b4bebeee1dee8d333bfa105a6c28fec5eb34b147:587: ERROR: space required after that ';' (ctx:VxV)
b4bebeee1dee8d333bfa105a6c28fec5eb34b147:623: ERROR: suspect code indent for conditional statements (12, 14)
total: 9 errors, 6 warnings, 664 lines checked
86545e7afe3f822b8561c7ceee7540fc3b19c3f0:31: ERROR: space required after that ';' (ctx:VxV)
86545e7afe3f822b8561c7ceee7540fc3b19c3f0:40: ERROR: space required after that ';' (ctx:VxV)
total: 2 errors, 0 warnings, 60 lines checked
Use of uninitialized value $acpi_testexpected in string eq at scripts/checkpatch.pl line 1529.
65d58c91ef1a15ad945ece367983437576f8e82b:22: WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?
total: 0 errors, 1 warnings, 14 lines checked
Use of uninitialized value $acpi_testexpected in string eq at scripts/checkpatch.pl line 1529.
f8ce39701b5be032fb3f9c05e8adb4055f70eec2:21: WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?
total: 0 errors, 1 warnings, 0 lines checked
FAIL one or more commits failed scripts/checkpatch.pl
Cleaning up file based variables
ERROR: Job failed: exit code 1
# gpg: Signature made Wed 12 May 2021 17:40:34 BST
# gpg: using RSA key 2035F894B00AA3CF7CCDE1B76C1CD1287DB01100
# gpg: Good signature from "Warner Losh <wlosh@netflix.com>" [unknown]
# gpg: aka "Warner Losh <imp@bsdimp.com>" [unknown]
# gpg: aka "Warner Losh <imp@freebsd.org>" [unknown]
# gpg: aka "Warner Losh <imp@village.org>" [unknown]
# gpg: aka "Warner Losh <wlosh@bsdimp.com>" [unknown]
# 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: 2035 F894 B00A A3CF 7CCD E1B7 6C1C D128 7DB0 1100
* remotes/bsdimp/tags/pull-bsd-user-20210511:
bsd-user: rename linux_binprm to bsd_binprm
bsd-user: Stop building the sparc targets
bsd-user: remove target_signal.h, it's unused
bsd-user: style tweak: keyword space (
bsd-user: style tweak: Remove #if 0'd code
bsd-user: style tweak: keyword space (
bsd-user: style tweak: keyword space (
bsd-user: whitespace changes
bsd-user: use qemu_strtoul in preference to strtol
bsd-user: style tweak: use {} consistently in for / if / else statements
bsd-user: style tweak: use {} for all if statements, format else correctly
bsd-user: style tweak: don't assign in if statements
bsd-user: style tweak: Use preferred block comments
bsd-user: style tweak: remove spacing after '*' and add after }
bsd-user: style tweak: move extern to header file
bsd-user: Remove commented out code
bsd-user: style tweak: Use preferred block comments
bsd-user: style tweak: Remove #if 0'd code
bsd-user: style tweak: use C not C++ comments
bsd-user: whitespace changes
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
tb_gen_code() assumes that tb->size must never be zero, otherwise it
may produce spurious exceptions. For x86_64 this may happen when
creating a translation block for the vsyscall page.
Fix by pretending that vsyscall translation blocks have at least one
instruction.
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210519045738.1335210-2-iii@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
The vfio_ccw_unrealize() routine makes an unconditional attempt to
unregister every IRQ notifier, though they may not have been registered
in the first place (when running on an older kernel, for example).
Let's mirror this behavior in the error cleanups in vfio_ccw_realize()
so that if/when new IRQs are added, it is less confusing to recognize
the necessary procedures. The worst case scenario would be some extra
messages about an undefined IRQ, but since this is an error exit that
won't be the only thing to worry about.
And regarding those messages, let's change it to a warning instead of
an error, to better reflect their severity. The existing code in both
paths handles everything anyway.
Signed-off-by: Eric Farman <farman@linux.ibm.com>
Acked-by: Matthew Rosato <mjrosato@linux.ibm.com>
Message-Id: <20210428143652.1571487-1-farman@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Commit 690e29b911 ("vfio-ccw: Refactor ccw irq handler") changed
one of the checks for the IRQ notifier registration from saying
"the host needs to recognize the only IRQ that exists" to saying
"the host needs to recognize ANY IRQ that exists."
And this worked fine, because the subsequent change to support the
CRW IRQ notifier doesn't get into this code when running on an older
kernel, thanks to a guard by a capability region. The later addition
of the REQ(uest) IRQ by commit b2f96f9e4f ("vfio-ccw: Connect the
device request notifier") broke this assumption because there is no
matching capability region. Thus, running new QEMU on an older
kernel fails with:
vfio: unexpected number of irqs 2
Let's adapt the message here so that there's a better clue of what
IRQ is missing.
Furthermore, let's make the REQ(uest) IRQ not fail when attempting
to register it, to permit running vfio-ccw on a newer QEMU with an
older kernel.
Fixes: b2f96f9e4f ("vfio-ccw: Connect the device request notifier")
Signed-off-by: Eric Farman <farman@linux.ibm.com>
Message-Id: <20210421152053.2379873-1-farman@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
If arch-specific code generates a translation block of size 0,
tb_gen_code() may generate a spurious exception. Add an assertion in
order to catch such situations early.
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210416154939.32404-5-iii@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
tb_gen_code() assumes that tb->size must never be zero, otherwise it
may produce spurious exceptions. For xtensa this may happen when
decoding an unknown instruction, when handling a write into the
CCOUNT or CCOMPARE special register and when single-stepping the first
instruction of an exception handler.
Fix by pretending that the size of the respective translation block is
1 in all these cases.
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Tested-by: Max Filippov <jcmvbkbc@gmail.com>
Acked-by: Max Filippov <jcmvbkbc@gmail.com>
Message-Id: <20210416154939.32404-4-iii@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
tb_gen_code() assumes that tb->size must never be zero, otherwise it
may produce spurious exceptions. For ARM this may happen when creating
a translation block for the commpage.
Fix by pretending that commpage translation blocks have at least one
instruction.
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210416154939.32404-3-iii@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Hitting an uretprobe in a s390x TCG guest causes a SIGSEGV. What
happens is:
* uretprobe maps a userspace page containing an invalid instruction.
* uretprobe replaces the target function's return address with the
address of that page.
* When tb_gen_code() is called on that page, tb->size ends up being 0
(because the page starts with the invalid instruction), which causes
virt_page2 to point to the previous page.
* The previous page is not mapped, so this causes a spurious
translation exception.
tb->size must never be 0: even if there is an illegal instruction, the
instruction bytes that have been looked at must count towards tb->size.
So adjust s390x's translate_one() to act this way for both illegal
instructions and instructions that are known to generate exceptions.
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210416154939.32404-2-iii@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
TypeGuards wont exist in Python proper until 3.10. Ah well. We can hack
up our own by declaring this function to return the type we claim it
checks for and using this to safely downcast object -> List[str].
In so doing, I bring this function under _pragma so it can use the
'info' object in its closure. Having done this, _pragma also now no
longer needs to take a 'self' parameter, so drop it.
To help with line-length, and with the context evident from its new
scope, rename the function to the shorter check_list_str().
Signed-off-by: John Snow <jsnow@redhat.com>
Message-Id: <20210519183951.3946870-12-jsnow@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
When the token can be None (EOF), we can't use 'x in "abc"' style
membership tests to group types of tokens together, because 'None in
"abc"' is a TypeError.
Easy enough to fix. (Use a tuple: It's neither a static typing error nor
a runtime error to check for None in Tuple[str, ...])
Add tests to prevent a regression. (Note: they cannot be added prior to
this fix, as the unhandled stack trace will not match test output in the
CI system.)
Signed-off-by: John Snow <jsnow@redhat.com>
Message-Id: <20210519183951.3946870-11-jsnow@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Instead of using get_expr nested=False, allow get_expr to always return
any expression. In exchange, add a new error message to the top-level
parser that explains the semantic error: Top-level expressions must
always be JSON objects.
This helps mypy understand the rest of this function which assumes that
get_expr did indeed return a dict.
The exception type changes from QAPIParseError to QAPISemError as a
result, and the error message in two tests now changes.
Signed-off-by: John Snow <jsnow@redhat.com>
Message-Id: <20210519183951.3946870-7-jsnow@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
The type checker can't narrow the type of the token value to string,
because it's only loosely correlated with the return token.
We know that a token of '#' should always have a "str" value.
Add an assertion.
Signed-off-by: John Snow <jsnow@redhat.com>
Message-Id: <20210519183951.3946870-6-jsnow@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
For the sake of keeping __init__ smaller (and treating it more like a
gallery of what state variables we can expect to see), put the actual
parsing action into a parse method. It remains invoked from the init
method to reduce churn.
To accomplish this, @previously_included becomes the private data
member ._included, and the filename is stashed as ._fname.
Add any missing declarations to the init method, and group them by
function so they can be understood quickly at a glance.
Signed-off-by: John Snow <jsnow@redhat.com>
Message-Id: <20210519183951.3946870-5-jsnow@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
With the QAPISourceInfo(None, None, None) construct gone, there's no
longer any reason to have to specify that a file starts on the first
line. Remove it from the initializer and default it to 1.
Remove the last vestiges where we check for 'line' being unset, that
can't happen, now.
Signed-off-by: John Snow <jsnow@redhat.com>
Message-Id: <20210519183951.3946870-4-jsnow@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Paolo Bonzini