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  1. Feb 02, 2022
    • John Snow's avatar
      python/machine: raise VMLaunchFailure exception from launch() · 50465f94
      John Snow authored 
      
This allows us to pack in some extra information about the failure,
which guarantees that if the caller did not *intentionally* cause a
failure (by capturing this Exception), some pretty good clues will be
printed at the bottom of the traceback information.

This will help make failures in the event of a non-negative return code
more obvious when they go unhandled; the current behavior in
_post_shutdown() is to print a warning message only in the event of
signal-based terminations (for negative return codes).

(Note: In Python, catching BaseException instead of Exception catches a
broader array of Exception events, including SystemExit and
KeyboardInterrupt. We do not want to "wrap" such exceptions as a
VMLaunchFailure, because that will 'downgrade' the exception from a
BaseException to a regular Exception. We do, however, want to perform
cleanup in either case, so catch on the broadest scope and
wrap-and-re-raise only in the more targeted scope.)

Signed-off-by: default avatarJohn Snow <jsnow@redhat.com>
Reviewed-by: default avatarHanna Reitz <hreitz@redhat.com>
Reviewed-by: default avatarKevin Wolf <kwolf@redhat.com>
Message-id: 20220201041134.1237016-3-jsnow@redhat.com
Signed-off-by: default avatarJohn Snow <jsnow@redhat.com>
      50465f94
    • John Snow's avatar
      python/aqmp: Fix negotiation with pre-"oob" QEMU · fa73e6e4
      John Snow authored 
      
QEMU versions prior to the "oob" capability *also* can't accept the
"enable" keyword argument at all. Fix the handshake process with older
QEMU versions.

Signed-off-by: default avatarJohn Snow <jsnow@redhat.com>
Reviewed-by: default avatarHanna Reitz <hreitz@redhat.com>
Reviewed-by: default avatarKevin Wolf <kwolf@redhat.com>
Message-id: 20220201041134.1237016-2-jsnow@redhat.com
Signed-off-by: default avatarJohn Snow <jsnow@redhat.com>
      fa73e6e4
  3. Feb 01, 2022
  5. Jan 31, 2022
    • Peter Maydell's avatar
      Merge remote-tracking branch 'remotes/bsdimp/tags/bsd-user-arm-2022q1-pull-request' into staging · 5cbe6411
      Peter Maydell authored 
      bsd-user: upstream signal implementation

Upstream the bsd-user fork signal implementation, for the most part.  This
series of commits represents nearly all of the infrastructure that surround
signals, except the actual system call glue (that was also reworked in the
fork and needs its own series). In addition, this adds the sigsegv and sigbus
code to arm. Even in the fork, we don't have good x86 signal implementation,
so there's little to upstream for that at the moment.

bsd-user's signal implementation is similar to linux-user's. The full context
can be found in the bsd-user's fork's 'blitz branch' at
https://github.com/qemu-bsd-user/qemu-bsd-user/tree/blitz which shows how these
are used to implement various system calls. Since this was built from
linux-user's stack stuff, evolved for BSD with the passage of a few years, it
no-doubt missed some bug fixes from linux-user (though nothing obvious stood out
in the quick comparison I made). After the first round of reviews, many of these
improvements have been incorporated.

Patchew history: https://patchew.org/QEMU/20220125012947.14974-1-imp@bsdimp.com/



# gpg: Signature made Mon 31 Jan 2022 19:55:51 GMT
# 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/bsd-user-arm-2022q1-pull-request: (40 commits)
  bsd-user/freebsd/target_os_ucontext.h: Prefer env as arg name for CPUArchState args
  bsd-user: Rename arg name for target_cpu_reset to env
  MAINTAINERS: Add tests/vm/*bsd to the list to get reviews on
  bsd-user/signal.c: do_sigaltstack
  bsd-user/signal.c: implement do_sigaction
  bsd-user/signal.c: implement do_sigreturn
  bsd-user/signal.c: process_pending_signals
  bsd-user/signal.c: tswap_siginfo
  bsd-user/signal.c: handle_pending_signal
  bsd-user/signal.c: setup_frame
  bsd-user/signal.c: sigset manipulation routines.
  bsd-user/signal.c: Fill in queue_signal
  bsd-user/signal.c: Implement dump_core_and_abort
  bsd-user/strace.c: print_taken_signal
  bsd-user/signal.c: Implement host_signal_handler
  bsd-user/signal.c: Implement rewind_if_in_safe_syscall
  bsd-user/signal.c: host_to_target_siginfo_noswap
  bsd-user: Add trace events for bsd-user
  bsd-user: Add host signals to the build
  bsd-user/host/x86_64/host-signal.h: Implement host_signal_*
  ...

Signed-off-by: default avatarPeter Maydell <peter.maydell@linaro.org>
      5cbe6411
    • Peter Maydell's avatar
      Merge remote-tracking branch 'remotes/legoater/tags/pull-ppc-20220130' into staging · 804b30d2
      Peter Maydell authored 
      
ppc 7.0 queue:

* Exception and TLB fixes for the 405 CPU (Fabiano and Cedric)
* spapr fixes (Alexey and Daniel)
* PowerNV PHB3/4 fixes (Frederic and Daniel)
* PowerNV XIVE improvements (Cedric)
* 603 CPUs fixes (Christophe)
* Book-E exception fixes (Vitaly)
* Misc compile issues  (Philippe and Fabiano)
* Exception model rework for the BookS CPUs (Fabiano)
* Exception model rework for the 74xx CPUs (Fabiano)
* Removal of 602 CPUs

# gpg: Signature made Sun 30 Jan 2022 17:42:23 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-ppc-20220130: (41 commits)
  target/ppc: Remove support for the PowerPC 602 CPU
  target/ppc: 74xx: Set SRRs directly in exception code
  target/ppc: 74xx: System Reset interrupt cleanup
  target/ppc: 74xx: System Call exception cleanup
  target/ppc: 74xx: Program exception cleanup
  target/ppc: 74xx: External interrupt cleanup
  target/ppc: 74xx: Machine Check exception cleanup
  target/ppc: Simplify powerpc_excp_74xx
  target/ppc: Introduce powerpc_excp_74xx
  target/ppc: books: Program exception cleanup
  target/ppc: books: External interrupt cleanup
  target/ppc: books: Machine Check exception cleanup
  target/ppc: Simplify powerpc_excp_books
  target/ppc: Introduce powerpc_excp_books
  target/ppc: 405: Watchdog timer exception cleanup
  target/ppc: 405: Program exception cleanup
  target/ppc: 405: Instruction storage interrupt cleanup
  target/ppc: 405: Data Storage exception cleanup
  target/ppc: 405: Debug exception cleanup
  target/ppc: 405: Alignment exception cleanup
  ...

Signed-off-by: default avatarPeter Maydell <peter.maydell@linaro.org>
      804b30d2