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27495 commits

Author SHA1 Message Date
Anthony Liguori 51455c59dd QOM CPUState refactorings
* Fix for OpenRISCCPU subclasses
 * Fix for gdbstub CPU selection
 * Move linux-user CPU functions into new header
 * CPUState part 10 refactoring: first_cpu, next_cpu, cpu_single_env et al.
 * Fix some targets to consistently inline TCG code generation
 * Centrally log CPU reset
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Merge remote-tracking branch 'afaerber/tags/qom-cpu-for-anthony' into staging

QOM CPUState refactorings

* Fix for OpenRISCCPU subclasses
* Fix for gdbstub CPU selection
* Move linux-user CPU functions into new header
* CPUState part 10 refactoring: first_cpu, next_cpu, cpu_single_env et al.
* Fix some targets to consistently inline TCG code generation
* Centrally log CPU reset

# gpg: Signature made Wed 10 Jul 2013 07:52:39 AM CDT using RSA key ID 3E7E013F
# gpg: Can't check signature: public key not found

# By Andreas Färber (41) and others
# Via Andreas Färber
* afaerber/tags/qom-cpu-for-anthony: (43 commits)
  cpu: Move reset logging to CPUState
  target-ppc: Change LOG_MMU_STATE() argument to CPUState
  target-i386: Change LOG_PCALL_STATE() argument to CPUState
  log: Change log_cpu_state[_mask]() argument to CPUState
  target-i386: Change do_smm_enter() argument to X86CPU
  target-i386: Change do_interrupt_all() argument to X86CPU
  target-xtensa: Change gen_intermediate_code_internal() arg to XtensaCPU
  target-unicore32: Change gen_intermediate_code_internal() signature
  target-sparc: Change gen_intermediate_code_internal() argument to SPARCCPU
  target-sh4: Change gen_intermediate_code_internal() argument to SuperHCPU
  target-s390x: Change gen_intermediate_code_internal() argument to S390CPU
  target-ppc: Change gen_intermediate_code_internal() argument to PowerPCCPU
  target-mips: Change gen_intermediate_code_internal() argument to MIPSCPU
  target-microblaze: Change gen_intermediate_code_internal() argument types
  target-m68k: Change gen_intermediate_code_internal() argument to M68kCPU
  target-lm32: Change gen_intermediate_code_internal() argument to LM32CPU
  target-i386: Change gen_intermediate_code_internal() argument to X86CPU
  target-cris: Change gen_intermediate_code_internal() argument to CRISCPU
  target-arm: Change gen_intermediate_code_internal() argument to ARMCPU
  target-alpha: Change gen_intermediate_code_internal() argument to AlphaCPU
  ...
2013-07-10 10:54:16 -05:00
Anthony Liguori 9f9a03b981 Merge remote-tracking branch 'riku/linux-user-for-upstream' into staging
# By Andreas Schwab (2) and others
# Via Riku Voipio
* riku/linux-user-for-upstream:
  linux-user: Do not ignore mmap failure from host
  linux-user: improve target_to_host_sock_type conversion
  user-exec.c: Set is_write correctly in the ARM cpu_signal_handler()
  linux-user: Fix sys_utimensat (would not compile on old glibc)
  linux-user: fix signal number range check
  linux-user: add SIOCADDRT/SIOCDELRT support
  linux-user: handle /proc/$$ like /proc/self

Message-id: cover.1373051589.git.riku.voipio@linaro.org
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-07-10 10:54:09 -05:00
Anthony Liguori 6272d17c42 Merge remote-tracking branch 'rth/tcg-next' into staging
# By Richard Henderson
# Via Richard Henderson
* rth/tcg-next:
  tcg-arm: Implement tcg_register_jit
  tcg-i386: Use QEMU_BUILD_BUG_ON instead of assert for frame size
  tcg: Move the CIE and FDE header definitions to common code
  tcg: Fix high_pc fields in .debug_info
  tcg-arm: Use AT_PLATFORM to detect the host ISA
  tcg-arm: Simplify logic in detecting the ARM ISA in use
  tcg-arm: Rename use_armv5_instructions to use_armvt5_instructions
  tcg-arm: Make use of conditional availability of opcodes for divide
  tcg: Simplify logic using TCG_OPF_NOT_PRESENT
  tcg: Allow non-constant control macros
  tcg-ppc64: Don't implement rem
  tcg-ppc: Don't implement rem
  tcg-arm: Don't implement rem
  tcg: Split rem requirement from div requirement
  tcg: Add myself to general TCG maintainership

Message-id: 1373379515-28596-1-git-send-email-rth@twiddle.net
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-07-10 10:53:55 -05:00
Peter Crosthwaite 9d6a3d58e4 qom: Fix class cast of NULL classes
Its clear from the implementation that class casting is supposed to work
with a NULL class argument. Guard all dereferences of the class argument
against NULL accordingly.

Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Message-id: 94cd5ba46b74eea289a7e582635820c1c54e66fa.1371546907.git.peter.crosthwaite@xilinx.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-07-10 10:53:45 -05:00
Andreas Färber 91b1df8cf9 cpu: Move reset logging to CPUState
x86 was using additional CPU_DUMP_* flags, so make that configurable in
CPUClass::reset_dump_flags.

This adds reset logging for alpha, unicore32 and xtensa.

Acked-by: Michael Walle <michael@walle.cc> (for lm32)
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09 21:33:04 +02:00
Andreas Färber 77710e7aec target-ppc: Change LOG_MMU_STATE() argument to CPUState
Choose CPUState rather than PowerPCCPU since doing a CPU() cast on the
macro argument would hide type mismatches.

Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09 21:33:04 +02:00
Andreas Färber 8995b7a083 target-i386: Change LOG_PCALL_STATE() argument to CPUState
Since log_cpu_state_mask() argument was changed to CPUState,
CPUArchState is no longer needed.

Choose CPUState rather than X86CPU to not hide type mismatches with CPU().

Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09 21:33:04 +02:00
Andreas Färber a0762859ae log: Change log_cpu_state[_mask]() argument to CPUState
Since commit 878096eeb2 (cpu: Turn
cpu_dump_{state,statistics}() into CPUState hooks) CPUArchState is no
longer needed.

Add documentation and make the functions available through qemu/log.h
outside NEED_CPU_H to allow use in qom/cpu.c. Moving them to qom/cpu.h
was not yet possible due to convoluted include paths, so that some
devices grow an implicit and unneeded dependency on qom/cpu.h for now.

Acked-by: Michael Walle <michael@walle.cc> (for lm32)
Reviewed-by: Richard Henderson <rth@twiddle.net>
[AF: Simplified mb_cpu_do_interrupt() and do_interrupt_all() changes]
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09 21:33:04 +02:00
Andreas Färber 518e9d7d48 target-i386: Change do_smm_enter() argument to X86CPU
Prepares for log_cpu_state_mask() changing argument to CPUState.

Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09 21:33:04 +02:00
Andreas Färber ca4c810aab target-i386: Change do_interrupt_all() argument to X86CPU
Prepares for log_cpu_state() changing argument to CPUState.

Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09 21:33:04 +02:00
Andreas Färber 90b85b7706 target-xtensa: Change gen_intermediate_code_internal() arg to XtensaCPU
Also use bool type while at it.

Prepares for moving singlestep_enabled field to CPUState.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09 21:33:04 +02:00
Andreas Färber 62a8055936 target-unicore32: Change gen_intermediate_code_internal() signature
Use UniCore32CPU and bool.

Prepares for moving singlestep_enabled field to CPUState.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09 21:33:04 +02:00
Andreas Färber 68a471556d target-sparc: Change gen_intermediate_code_internal() argument to SPARCCPU
Also use bool type while at it.

Prepares for moving singlestep_enabled field to CPUState.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09 21:33:04 +02:00
Andreas Färber 38e308103d target-sh4: Change gen_intermediate_code_internal() argument to SuperHCPU
Also use bool type while at it.

Prepares for moving singlestep_enabled field to CPUState.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09 21:33:04 +02:00
Andreas Färber d9916c23d3 target-s390x: Change gen_intermediate_code_internal() argument to S390CPU
Also use bool type while at it.

Prepares for moving singlestep_enabled field to CPUState.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09 21:33:03 +02:00
Andreas Färber 213fe1f513 target-ppc: Change gen_intermediate_code_internal() argument to PowerPCCPU
Also use bool type while at it.

Prepares for moving singlestep_enabled field to CPUState.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09 21:33:03 +02:00
Andreas Färber 6429db34c1 target-mips: Change gen_intermediate_code_internal() argument to MIPSCPU
Also use bool type while at it.

Prepares for moving singlestep_enabled field to CPUState.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09 21:33:03 +02:00
Andreas Färber 4a274212f0 target-microblaze: Change gen_intermediate_code_internal() argument types
Use MicroBlazeCPU and bool.

Prepares for changing log_cpu_state() argument to CPUState and for
moving singlestep_enabled field to CPUState.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09 21:33:03 +02:00
Andreas Färber c296b15b7c target-m68k: Change gen_intermediate_code_internal() argument to M68kCPU
Also use bool type while at it.

Prepares for moving singlestep_enabled field to CPUState.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09 21:33:03 +02:00
Andreas Färber cd0db97ee0 target-lm32: Change gen_intermediate_code_internal() argument to LM32CPU
Also use bool type while at it.

Prepares for moving singlestep_enabled field to CPUState.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09 21:33:03 +02:00
Andreas Färber 467215c20f target-i386: Change gen_intermediate_code_internal() argument to X86CPU
Also use bool type while at it.

Prepares for moving singlestep_enabled field to CPUState.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09 21:33:03 +02:00
Andreas Färber 7fd2592dbc target-cris: Change gen_intermediate_code_internal() argument to CRISCPU
Also use bool type while at it.

Prepares for moving singlestep_enabled field to CPUState.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09 21:33:03 +02:00
Andreas Färber 5639c3f224 target-arm: Change gen_intermediate_code_internal() argument to ARMCPU
Also use bool type while at it.

Prepares for moving singlestep_enabled field to CPUState.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09 21:33:03 +02:00
Andreas Färber 86a35f7c46 target-alpha: Change gen_intermediate_code_internal() argument to AlphaCPU
Also use bool argument while at it.

Prepares for moving singlestep_enabled field to CPUState.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09 21:33:03 +02:00
Andreas Färber ae06d4988d target-xtensa: gen_intermediate_code_internal() should be inlined
Cc: qemu-stable@nongnu.org
Reported-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09 21:33:02 +02:00
Andreas Färber 13cccc6928 target-moxie: gen_intermediate_code_internal() should be inlined
Cc: qemu-stable@nongnu.org
Reported-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09 21:33:02 +02:00
Andreas Färber fd327f48f7 target-microblaze: gen_intermediate_code_internal() should be inlined
Cc: qemu-stable@nongnu.org
Reported-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09 21:33:02 +02:00
Andreas Färber 28014bcab2 target-lm32: gen_intermediate_code_internal() should be inlined
Cc: qemu-stable@nongnu.org
Reported-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Acked-by: Michael Walle <michael@walle.cc>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09 21:33:02 +02:00
Andreas Färber 6f47ec50db target-cris: gen_intermediate_code_internal() should be inlined
Cc: qemu-stable@nongnu.org
Reported-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09 21:33:02 +02:00
Andreas Färber 369ff018fe target-i386: Don't overuse CPUArchState
Use CPUX86State instead in dump support code.

Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09 21:33:02 +02:00
Andreas Färber 4fd6dd06e6 target-s390x: Change handle_{hypercall,diag}() argument to S390CPU
This allows to get rid of the last remaining ENV_GET_CPU() in
target-s390x/ by using CPU() cast directly on the argument.

Cc: Jason J. Herne <jjherne@us.ibm.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09 21:33:02 +02:00
Andreas Färber 19079e4605 target-s390x: Don't overuse ENV_GET_CPU()
Commit 3474b67948 (Utilize selective
runtime reg sync for hot code paths) introduced two uses of
ENV_GET_CPU() inside target-s390x/ KVM code. In one case we can use a
direct CPU() cast instead.

Cc: Jason J. Herne <jjherne@us.ibm.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09 21:33:02 +02:00
Andreas Färber 09c6a63a61 target-ppc: Don't overuse ENV_GET_CPU()
Commit b632a148b6 (target-ppc: QOM method
dispatch for MMU fault handling) introduced a use of ENV_GET_CPU()
inside target-ppc/ code. Use ppc_env_get_cpu() instead.

Purely cosmetic, non-functional change to aid in locating and removing
ENV_GET_CPU() usages.

Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09 21:33:02 +02:00
Andreas Färber de6db419e5 timer/arm_mptimer: Build arm_mptimer only once
Since current_cpu is CPUState it no longer depends on CPUARMState.

Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09 21:33:02 +02:00
Andreas Färber 2b927571cc intc/openpic: Build openpic only once
Since current_cpu is CPUState it no longer depends on CPUPPCState.

Move ppce500_set_mpic_proxy() to a new hw/ppc/ppc_e500.h because
hw/ppc/ppc.h is too heavily using CPUPPCState and PowerPCCPU.

Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09 21:33:02 +02:00
Andreas Färber dfc080791d intc/arm_gic: Build arm_gic only once
Since current_cpu is CPUState it no longer needs CPUArchState.

Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09 21:33:02 +02:00
Andreas Färber dca1173c20 bsd-user: Change thread_env to CPUState
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09 21:33:01 +02:00
Andreas Färber a2247f8ec9 linux-user: Change thread_env to CPUState
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09 21:33:01 +02:00
Andreas Färber 182735efaf cpu: Make first_cpu and next_cpu CPUState
Move next_cpu from CPU_COMMON to CPUState.
Move first_cpu variable to qom/cpu.h.

gdbstub needs to use CPUState::env_ptr for now.
cpu_copy() no longer needs to save and restore cpu_next.

Acked-by: Paolo Bonzini <pbonzini@redhat.com>
[AF: Rebased, simplified cpu_copy()]
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09 21:32:54 +02:00
Andreas Färber 9b056fcc5b linux-user: Clean up do_syscall() Coding Style for TARGET_NR_exit
In particular fix 6-/10-char indentation.

Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09 21:20:28 +02:00
Andreas Färber 1d5791f4a6 kvm: Change kvm_remove_all_breakpoints() argument to CPUState
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09 21:20:28 +02:00
Andreas Färber 4917cf4432 cpu: Replace cpu_single_env with CPUState current_cpu
Move it to qom/cpu.h.

Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09 21:20:28 +02:00
Andreas Färber 80b7cd7354 kvm: Free current_cpu identifier
Since CPU loops are done as last step in kvm_{insert,remove}_breakpoint()
and kvm_remove_all_breakpoints(), we do not need to distinguish between
invoking CPU and iterated CPUs and can thereby free the identifier for
use as a global variable.

Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09 21:20:28 +02:00
Andreas Färber 6e42be7cd1 cpu: Drop unnecessary dynamic casts in *_env_get_cpu()
A transition from CPUFooState to FooCPU can be considered safe,
just like FooCPU::env access in the opposite direction.
The only benefit of the FOO_CPU() casts would be protection against
bogus CPUFooState pointers, but then surrounding code would likely
break, too.

This should slightly improve interrupt etc. performance when going from
CPUFooState to FooCPU.
For any additional CPU() casts see 3556c233d9
(qom: allow turning cast debugging off).

Reported-by: Anthony Liguori <aliguori@us.ibm.com>
Acked-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09 21:20:28 +02:00
Peter Maydell 6291ad77d7 linux-user: Move cpu_clone_regs() and cpu_set_tls() into linux-user
The functions cpu_clone_regs() and cpu_set_tls() are not purely CPU
related -- they are specific to the TLS ABI for a a particular OS.
Move them into the linux-user/ tree where they belong.

target-lm32 had entirely unused implementations, since it has no
linux-user target; just drop them.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09 21:20:28 +02:00
Andreas Färber aa48dd9319 Revert "gdbstub: Simplify find_cpu()"
This reverts commit c52a6b67c1, which
replaced cpu_index() with cpu_index field, leading to deviation from
thread ID for NTPL and off-by-one otherwise.

Reported-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09 20:50:52 +02:00
Markus Armbruster c1b71b0c03 vl: Tighten parsing of -machine option phandle_start
Make it QEMU_OPT_NUMBER, so it gets parsed by generic code, which
actually bothers to check for errors, rather than its user, which
doesn't.

Cc: Alexander Graf <agraf@suse.de>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Alexander Graf <agraf@suse.de>
Message-id: 1372943363-24081-8-git-send-email-armbru@redhat.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-07-09 13:38:58 -05:00
Markus Armbruster 2ff3de685a Simplify -machine option queries with qemu_get_machine_opts()
The previous two commits fixed bugs in -machine option queries.  I
can't find fault with the remaining queries, but let's use
qemu_get_machine_opts() everywhere, for consistency, simplicity and
robustness.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-id: 1372943363-24081-7-git-send-email-armbru@redhat.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-07-09 13:38:58 -05:00
Markus Armbruster 7bccd94026 microblaze: Fix latent bug with default DTB lookup
microblaze_load_kernel() fails to call
qemu_find_file(QEMU_FILE_TYPE_BIOS, dtb_filename) when no -machine
options are given.  This can't normally happen, because -machine
option kernel is mandatory for this target.  Fix it anyway, by using
qemu_get_machine_opts().

Cc: Peter Crosthwaite <peter.crosthwaite@petalogix.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-id: 1372943363-24081-6-git-send-email-armbru@redhat.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-07-09 13:38:58 -05:00
Markus Armbruster 36ad0e948e Fix -machine options accel, kernel_irqchip, kvm_shadow_mem
Multiple -machine options with the same ID are merged.  All but the
one without an ID are to be silently ignored.

In most places, we query these options with a null ID.  This is
correct.

In some places, we instead query whatever options come first in the
list.  This is wrong.  When the -machine processed first happens to
have an ID, options are taken from that ID, and the ones specified
without ID are silently ignored.

Example:

    $ upstream-qemu -nodefaults -S -display none -monitor stdio -machine id=foo -machine accel=kvm,usb=on
    $ upstream-qemu -nodefaults -S -display none -monitor stdio -machine id=foo,accel=kvm,usb=on -machine accel=xen
    $ upstream-qemu -nodefaults -S -display none -monitor stdio -machine accel=xen -machine id=foo,accel=kvm,usb=on

    $ qemu-system-x86_64 -nodefaults -S -display none -monitor stdio -machine accel=kvm,usb=on
    QEMU 1.5.50 monitor - type 'help' for more information
    (qemu) info kvm
    kvm support: enabled
    (qemu) info usb
    (qemu) q
    $ qemu-system-x86_64 -nodefaults -S -display none -monitor stdio -machine id=foo -machine accel=kvm,usb=on
    QEMU 1.5.50 monitor - type 'help' for more information
    (qemu) info kvm
    kvm support: disabled
    (qemu) info usb
    (qemu) q
    $ qemu-system-x86_64 -nodefaults -S -display none -monitor stdio -machine id=foo,accel=kvm,usb=on -machine accel=xen
    QEMU 1.5.50 monitor - type 'help' for more information
    (qemu) info kvm
    kvm support: enabled
    (qemu) info usb
    USB support not enabled
    (qemu) q
    $ qemu-system-x86_64 -nodefaults -S -display none -monitor stdio -machine accel=xen -machine id=foo,accel=kvm,usb=on
    xc: error: Could not obtain handle on privileged command interface (2 = No such file or directory): Internal error
    xen be core: can't open xen interface
    failed to initialize Xen: Operation not permitted

Option usb is queried correctly, and the one without an ID wins,
regardless of option order.

Option accel is queried incorrectly, and which one wins depends on
option order and ID.

Affected options are accel (and its sugared forms -enable-kvm and
-no-kvm), kernel_irqchip, kvm_shadow_mem.

Additionally, option kernel_irqchip is normally on by default, except
it's off when no -machine options are given.  Bug can't bite, because
kernel_irqchip is used only when KVM is enabled, KVM is off by
default, and enabling always creates -machine options.  Downstreams
that enable KVM by default do get bitten, though.

Use qemu_get_machine_opts() to fix these bugs.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-id: 1372943363-24081-5-git-send-email-armbru@redhat.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-07-09 13:38:58 -05:00