In order to support Linux vdso in Xen.
Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
Handle the hypercall to set a per vcpu info, and also wire up the default
vcpu_info in the shared_info page for the first 32 vCPUs.
To avoid deadlock within KVM a vCPU thread must set its *own* vcpu_info
rather than it being set from the context in which the hypercall is
invoked.
Add the vcpu_info (and default) GPA to the vmstate_x86_cpu for migration,
and restore it in kvm_arch_put_registers() appropriately.
Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
This is simply when guest tries to register a vcpu_info
and since vcpu_info placement is optional in the minimum ABI
therefore we can just fail with -ENOSYS
Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
This is when guest queries for support for HVMOP_pagetable_dying.
Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
Specifically XENMEM_add_to_physmap with space XENMAPSPACE_shared_info to
allow the guest to set its shared_info page.
Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
[dwmw2: Use the xen_overlay device, add compat support]
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
Xen will "latch" the guest's 32-bit or 64-bit ("long mode") setting when
the guest writes the MSR to fill in the hypercall page, or when the guest
sets the event channel callback in HVM_PARAM_CALLBACK_IRQ.
KVM handles the former and sets the kernel's long_mode flag accordingly.
The latter will be handled in userspace. Keep them in sync by noticing
when a hypercall is made in a mode that doesn't match qemu's idea of
the guest mode, and resyncing from the kernel. Do that same sync right
before serialization too, in case the guest has set the hypercall page
but hasn't yet made a system call.
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
They both do the same thing and just call sched_yield. This is enough to
stop the Linux guest panicking when running on a host kernel which doesn't
intercept SCHEDOP_poll and lets it reach userspace.
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
It allows to shutdown itself via hypercall with any of the 3 reasons:
1) self-reboot
2) shutdown
3) crash
Implementing SCHEDOP_shutdown sub op let us handle crashes gracefully rather
than leading to triple faults if it remains unimplemented.
In addition, the SHUTDOWN_soft_reset reason is used for kexec, to reset
Xen shared pages and other enlightenments and leave a clean slate for the
new kernel without the hypervisor helpfully writing information at
unexpected addresses.
Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
[dwmw2: Ditch sched_op_compat which was never available for HVM guests,
Add SCHEDOP_soft_reset]
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
This is just meant to serve as an example on how we can implement
hypercalls. xen_version specifically since Qemu does all kind of
feature controllability. So handling that here seems appropriate.
Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
[dwmw2: Implement kvm_gva_rw() safely]
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
This means handling the new exit reason for Xen but still
crashing on purpose. As we implement each of the hypercalls
we will then return the right return code.
Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
[dwmw2: Add CPL to hypercall tracing, disallow hypercalls from CPL > 0]
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
There are (at least) three different vCPU ID number spaces. One is the
internal KVM vCPU index, based purely on which vCPU was chronologically
created in the kernel first. If userspace threads are all spawned and
create their KVM vCPUs in essentially random order, then the KVM indices
are basically random too.
The second number space is the APIC ID space, which is consistent and
useful for referencing vCPUs. MSIs will specify the target vCPU using
the APIC ID, for example, and the KVM Xen APIs also take an APIC ID
from userspace whenever a vCPU needs to be specified (as opposed to
just using the appropriate vCPU fd).
The third number space is not normally relevant to the kernel, and is
the ACPI/MADT/Xen CPU number which corresponds to cs->cpu_index. But
Xen timer hypercalls use it, and Xen timer hypercalls *really* want
to be accelerated in the kernel rather than handled in userspace, so
the kernel needs to be told.
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
Introduce support for emulating CPUID for Xen HVM guests. It doesn't make
sense to advertise the KVM leaves to a Xen guest, so do Xen unconditionally
when the xen-version machine property is set.
Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
[dwmw2: Obtain xen_version from KVM property, make it automatic]
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
This just initializes the basic Xen support in KVM for now. Only permitted
on TYPE_PC_MACHINE because that's where the sysbus devices for Xen heap
overlay, event channel, grant tables and other stuff will exist. There's
no point having the basic hypercall support if nothing else works.
Provide sysemu/kvm_xen.h and a kvm_xen_get_caps() which will be used
later by support devices.
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
- Various header cleaned up (removing pointless headers)
- Mark various files/code user/system specific
- Make various objects target-independent
- Remove tswapN() calls from dump.o
- Suggest g_assert_not_reached() instead of assert(0)
- qdev / qom
- Replace various container_of() by QOM cast macros
- Declare some QOM macros using OBJECT_DECLARE_TYPE()
- Embed OHCI QOM child in SM501 chipset
- hw (ISA & IDE)
- add some documentation, improve function names
- un-inline, open-code few functions
- have ISA API accessing IRQ/DMA prefer ISABus over ISADevice
- Demote IDE subsystem maintenance to "Odd Fixes"
- ui: Improve Ctrl+Alt hint on Darwin Cocoa
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Merge tag 'buildsys-qom-qdev-ui-20230227' of https://github.com/philmd/qemu into staging
- buildsys
- Various header cleaned up (removing pointless headers)
- Mark various files/code user/system specific
- Make various objects target-independent
- Remove tswapN() calls from dump.o
- Suggest g_assert_not_reached() instead of assert(0)
- qdev / qom
- Replace various container_of() by QOM cast macros
- Declare some QOM macros using OBJECT_DECLARE_TYPE()
- Embed OHCI QOM child in SM501 chipset
- hw (ISA & IDE)
- add some documentation, improve function names
- un-inline, open-code few functions
- have ISA API accessing IRQ/DMA prefer ISABus over ISADevice
- Demote IDE subsystem maintenance to "Odd Fixes"
- ui: Improve Ctrl+Alt hint on Darwin Cocoa
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# gpg: Signature made Mon 27 Feb 2023 21:34:24 GMT
# gpg: using RSA key FAABE75E12917221DCFD6BB2E3E32C2CDEADC0DE
# gpg: Good signature from "Philippe Mathieu-Daudé (F4BUG) <f4bug@amsat.org>" [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: FAAB E75E 1291 7221 DCFD 6BB2 E3E3 2C2C DEAD C0DE
* tag 'buildsys-qom-qdev-ui-20230227' of https://github.com/philmd/qemu: (125 commits)
ui/cocoa: user friendly characters for release mouse
dump: Add create_win_dump() stub for non-x86 targets
dump: Simplify compiling win_dump.o by introducing win_dump_available()
dump: Clean included headers
dump: Replace TARGET_PAGE_SIZE -> qemu_target_page_size()
dump: Replace tswapN() -> cpu_to_dumpN()
hw/ide/pci: Add PCIIDEState::isa_irq[]
hw/ide/via: Replace magic 2 value by ARRAY_SIZE / MAX_IDE_DEVS
hw/ide/piix: Refactor pci_piix_init_ports as pci_piix_init_bus per bus
hw/ide/piix: Pass Error* to pci_piix_init_ports() for better error msg
hw/ide/piix: Remove unused includes
hw/ide/pci: Unexport bmdma_active_if()
hw/ide/ioport: Remove unnecessary includes
hw/ide: Declare ide_get_[geometry/bios_chs_trans] in 'hw/ide/internal.h'
hw/ide: Rename idebus_active_if() -> ide_bus_active_if()
hw/ide: Rename ide_init2() -> ide_bus_init_output_irq()
hw/ide: Rename ide_exec_cmd() -> ide_bus_exec_cmd()
hw/ide: Rename ide_register_restart_cb -> ide_bus_register_restart_cb
hw/ide: Rename ide_create_drive() -> ide_bus_create_drive()
hw/ide: Rename ide_set_irq() -> ide_bus_set_irq()
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The ioapic sources reside in hw/intc already. Move the headers there
as well.
Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230213173033.98762-11-shentey@gmail.com>
[PMD: Keep ioapic_internal.h in hw/intc/, not under include/]
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Remove dead code:
- unused fields in CPUTriCoreState
- (unexisting) tricore_def_t structure
- forward declaration of tricore_boot_info structure
(declared in "hw/tricore/tricore.h", used once in
hw/tricore/tricore_testboard.c).
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Message-Id: <20230117184217.83305-1-philmd@linaro.org>
Under system emulation, xtensa_cpu_initfn() calls
memory_region_init_io(), itself declared in "exec/memory.h".
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20221217172907.8364-10-philmd@linaro.org>
Commit caac44a52a ("target/sparc: Make sparc_cpu_tlb_fill sysemu
only") restricted mmu_helper.c to system emulation. Checking
whether CONFIG_USER_ONLY is defined is now pointless.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20221217172907.8364-9-philmd@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20221217172907.8364-7-philmd@linaro.org>
When compiling for windows-arm64 using clang-15, it reports a sometimes
uninitialized variable. This seems to be a false positive, as a default
case guards switch expressions, preventing to return an uninitialized
value, but clang seems unhappy with assert(0) definition.
Change code to g_assert_not_reached() fix the warning.
Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230221153006.20300-5-pierrick.bouvier@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
The 'hwaddr' type is only available / meaningful on system emulation.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20221217172907.8364-5-philmd@linaro.org>
Missed in 0093b9a5ee ("target/loongarch: Adjust functions
and structure to support user-mode") while cleaning commit
f84a2aacf5 ("target/loongarch: Add LoongArch IOCSR instruction").
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20221217172907.8364-4-philmd@linaro.org>
The cpu is used in both user and system emulation context while
sysbus.h is system-only. Remove it since it's not needed anyway.
Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20221217172907.8364-3-philmd@linaro.org>
Likely out of sync: last update is from 2008
(commit d1412eb240), 12 years ago.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20221217172907.8364-2-philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20221217173219.8715-3-philmd@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20221217173219.8715-2-philmd@linaro.org>
x86_cpu_dump_local_apic_state() is called from monitor.c which
is only compiled for system emulation since commit bf95728400
("monitor: remove target-specific code from monitor.c").
Interestingly this stub was added few weeks later in commit
1f871d49e3 ("hmp: added local apic dump state") and was not
necessary by that time.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20221216220158.6317-5-philmd@linaro.org>
NEED_CPU_H is always defined for these target-specific headers.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20221216220158.6317-2-philmd@linaro.org>
The 'hwaddr' type is only available / meaningful on system emulation.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20221216215519.5522-6-philmd@linaro.org>
The 'hwaddr' type is only available / meaningful on system emulation.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20221216215519.5522-5-philmd@linaro.org>
The new CPU model mostly inherits features from Icelake-Server, while
adding new features:
- AMX (Advance Matrix eXtensions)
- Bus Lock Debug Exception
and new instructions:
- AVX VNNI (Vector Neural Network Instruction):
- VPDPBUS: Multiply and Add Unsigned and Signed Bytes
- VPDPBUSDS: Multiply and Add Unsigned and Signed Bytes with Saturation
- VPDPWSSD: Multiply and Add Signed Word Integers
- VPDPWSSDS: Multiply and Add Signed Integers with Saturation
- FP16: Replicates existing AVX512 computational SP (FP32) instructions
using FP16 instead of FP32 for ~2X performance gain
- SERIALIZE: Provide software with a simple way to force the processor to
complete all modifications, faster, allowed in all privilege levels and
not causing an unconditional VM exit
- TSX Suspend Load Address Tracking: Allows programmers to choose which
memory accesses do not need to be tracked in the TSX read set
- AVX512_BF16: Vector Neural Network Instructions supporting BFLOAT16
inputs and conversion instructions from IEEE single precision
- fast zero-length MOVSB (KVM doesn't support yet)
- fast short STOSB (KVM doesn't support yet)
- fast short CMPSB, SCASB (KVM doesn't support yet)
Features that may be added in future versions:
- CET (virtualization support hasn't been merged)
Signed-off-by: Wang, Lei <lei4.wang@intel.com>
Reviewed-by: Robert Hoo <robert.hu@linux.intel.com>
Message-Id: <20220812055751.14553-1-lei4.wang@intel.com>
Reviewed-by: Xiaoyao Li <xiaoyao.li@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
These are just a flag that documents the performance characteristic of
an instruction; it needs no hypervisor support. So include them even
if KVM does not show them. In particular, FZRM/FSRS/FSRC have only
been added very recently, but they are available on Sapphire Rapids
processors.
Reviewed-by: Xiaoyao Li <xiaoyao.li@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
These are three more markers for string operation optimizations.
They can all be added to TCG, whose string operations are more or
less as fast as they can be for short lengths.
Reviewed-by: Xiaoyao Li <xiaoyao.li@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Fast short REP MOVS can be added to TCG, since a trivial translation
of string operation is a good option for short lengths.
Reviewed-by: Xiaoyao Li <xiaoyao.li@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
When TCG is disabled this part of the code should not be reachable, so
wrap it with an ifdef for now.
Signed-off-by: Fabiano Rosas <farosas@suse.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This function is needed by common code (ptw.c), so move it along with
the other regime_* functions in internal.h. When we enable the build
without TCG, the tlb_helper.c file will not be present.
Signed-off-by: Fabiano Rosas <farosas@suse.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The hflags are used only for TCG code, so introduce a new file
hflags.c to keep that code.
Signed-off-by: Fabiano Rosas <farosas@suse.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This is in preparation to moving the hflags code into its own file
under the tcg/ directory.
Signed-off-by: Fabiano Rosas <farosas@suse.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Introduce the target/arm/tcg directory. Its purpose is to hold the TCG
code that is selected by CONFIG_TCG.
Signed-off-by: Claudio Fontana <cfontana@suse.de>
Signed-off-by: Fabiano Rosas <farosas@suse.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The next few patches will move helpers under CONFIG_TCG. We'd prefer
to keep the debug helpers and debug registers close together, so
rearrange the file a bit to be able to wrap the helpers with a TCG
ifdef.
Signed-off-by: Fabiano Rosas <farosas@suse.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This is in preparation for restricting compilation of some parts of
debug_helper.c to TCG only.
Signed-off-by: Fabiano Rosas <farosas@suse.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
* Fix memory corruption in the s390x dump code
* Various s390x TCG clean-ups
* s390x PV support for asynchronous teardown for reboot
* qemu-keymap related fixes
* Improvements for the duration of the gitlab-CI
* Deprecate the "-no-acpi" command line switch
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Merge tag 'pull-request-2023-02-27' of https://gitlab.com/thuth/qemu into staging
* Simplify device casting in w/vfio/ccw.c
* Fix memory corruption in the s390x dump code
* Various s390x TCG clean-ups
* s390x PV support for asynchronous teardown for reboot
* qemu-keymap related fixes
* Improvements for the duration of the gitlab-CI
* Deprecate the "-no-acpi" command line switch
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# gpg: Signature made Mon 27 Feb 2023 11:34:45 GMT
# gpg: using RSA key 27B88847EEE0250118F3EAB92ED9D774FE702DB5
# gpg: issuer "thuth@redhat.com"
# gpg: Good signature from "Thomas Huth <th.huth@gmx.de>" [full]
# gpg: aka "Thomas Huth <thuth@redhat.com>" [full]
# gpg: aka "Thomas Huth <huth@tuxfamily.org>" [full]
# gpg: aka "Thomas Huth <th.huth@posteo.de>" [unknown]
# Primary key fingerprint: 27B8 8847 EEE0 2501 18F3 EAB9 2ED9 D774 FE70 2DB5
* tag 'pull-request-2023-02-27' of https://gitlab.com/thuth/qemu: (33 commits)
Deprecate the "-no-acpi" command line switch
gitlab-ci.d/base: Mark jobs as interruptible by default
gitlab-ci.d: Build with --enable-fdt=system by default
gitlab-ci.d/buildtest-template: Simplify the configure step
gitlab-ci.d/buildtest: Disintegrate the build-coroutine-sigaltstack job
gitlab-ci.d/buildtest: Remove aarch64-softmmu from the build-system-ubuntu job
Updated the FSF address to <https://www.gnu.org/licenses/>
meson: fix dependency on qemu-keymap
qemu-keymap: Silence memory leak warning from Clang's sanitizer
configure: Add 'mkdir build' check
tests/tcg/s390x: Add sam.S
tests/tcg/s390x: Add bal.S
target/s390x: Use tcg_constant_* in translate_vx.c.inc
target/s390x: Use tcg_constant_i32 for fpinst_extract_m34
target/s390x: Use tcg_constant_* for DisasCompare
target/s390x: Use tcg_constant_* in local contexts
s390x/pv: Add support for asynchronous teardown for reboot
target/s390x: Hoist some computation in access_memmove
target/s390x: Inline do_access_{get,set}_byte
target/s390x: Remove TLB_NOTDIRTY workarounds
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
We did not correctly handle N >= operand size.
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1374
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230114233206.3118472-1-richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
