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  1. 17 5月, 2012 1 次提交
  3. 18 2月, 2012 1 次提交
    • J
      kvmvapic: Introduce TPR access optimization for Windows guests · e5ad936b
      由 Jan Kiszka 提交于 
      This enables acceleration for MMIO-based TPR registers accesses of
32-bit Windows guest systems. It is mostly useful with KVM enabled,
either on older Intel CPUs (without flexpriority feature, can also be
manually disabled for testing) or any current AMD processor.

The approach introduced here is derived from the original version of
qemu-kvm. It was refactored, documented, and extended by support for
user space APIC emulation, both with and without KVM acceleration. The
VMState format was kept compatible, so was the ABI to the option ROM
that implements the guest-side para-virtualized driver service. This
enables seamless migration from qemu-kvm to upstream or, one day,
between KVM and TCG mode.

The basic concept goes like this:
 - VAPIC PV interface consisting of I/O port 0x7e and (for KVM in-kernel
   irqchip) a vmcall hypercall is registered
 - VAPIC option ROM is loaded into guest
 - option ROM activates TPR MMIO access reporting via port 0x7e
 - TPR accesses are trapped and patched in the guest to call into option
   ROM instead, VAPIC support is enabled
 - option ROM TPR helpers track state in memory and invoke hypercall to
   poll for pending IRQs if required
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: NAvi Kivity <avi@redhat.com>
      e5ad936b
  5. 15 2月, 2012 1 次提交
  7. 04 2月, 2012 1 次提交
    • A
      qdev: register all types natively through QEMU Object Model · 39bffca2
      由 Anthony Liguori 提交于 
      This was done in a mostly automated fashion.  I did it in three steps and then
rebased it into a single step which avoids repeatedly touching every file in
the tree.

The first step was a sed-based addition of the parent type to the subclass
registration functions.

The second step was another sed-based removal of subclass registration functions
while also adding virtual functions from the base class into a class_init
function as appropriate.

Finally, a python script was used to convert the DeviceInfo structures and
qdev_register_subclass functions to TypeInfo structures, class_init functions,
and type_register_static calls.

We are almost fully converted to QOM after this commit.
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
      39bffca2
  9. 28 1月, 2012 1 次提交
  11. 19 1月, 2012 5 次提交
    • J
      apic: Open-code timer save/restore · 7a380ca3
      由 Jan Kiszka 提交于 
      To enable migration between accelerated and non-accelerated APIC models,
we will need to handle the timer saving and restoring specially and can
no longer rely on the automatics of VMSTATE_TIMER. Specifically,
accelerated model will not start any QEMUTimer.

This patch therefore factors out the generic bits into apic_next_timer
and use a post-load callback to implemented model-specific logic.
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>
      7a380ca3
    • J
      apic: Factor out base class for KVM reuse · dae01685
      由 Jan Kiszka 提交于 
      The KVM in-kernel APIC model will reuse parts of the user space model
while providing the same frontend view to guest and most management
interfaces.

Factor out an APIC base class to encapsulate those parts that will be
shared by user space and KVM model. This class offers callback hooks for
init, base/tpr setting, and the external NMI delivery that will be
set via APICCommonInfo structure and implemented specifically in the
subclasses.
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>
      dae01685
    • J
      apic: Introduce apic_report_irq_delivered · 343270ea
      由 Jan Kiszka 提交于 
      The in-kernel i8259 and IOAPIC backends for KVM will need this, so
encapsulate the shared bits.
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>
      343270ea
    • J
      apic: Inject external NMI events via LINT1 · 02c09195
      由 Jan Kiszka 提交于 
      On real hardware, NMI button events are injected via the LINT1 line of
the APICs. E.g. kdump expect this wiring and gets upset if the per-APIC
LINT1 mask is not respected, i.e. if NMIs are injected to VCPUs that
should not receive them. Change the APIC emulation code to reflect this.

Based on qemu-kvm patch by Lai Jiangshan.

CC: Lai Jiangshan <laijs@cn.fujitsu.com>
Reported-by: NKenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>
      02c09195
    • J
      apic: Stop timer on reset · ab388a98
      由 Jan Kiszka 提交于 
      All LVTs are masked on reset, so the timer becomes ineffective. Letting
it tick nevertheless is harmless, but will at least create a spurious
trace event.
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>
      ab388a98
  13. 28 11月, 2011 1 次提交
  15. 16 10月, 2011 1 次提交
    • J
      pc: Fix and clean up PIC-to-APIC IRQ path · d96e1737
      由 Jan Kiszka 提交于 
      The master PIC is connected to the LINTIN0 of the APICs. As the APIC
currently does not track the state of that line, we have to ask the PIC
to reinject its IRQ after the CPU picked up an event from the APIC.

This introduces pic_get_output to read the master PIC IRQ line state
without changing it. The APIC uses this function to decide if a PIC IRQ
should be reinjected on apic_update_irq. This reflects better how the
real hardware works.

The patch fixes some failures of the kvm unit tests apic and eventinj by
allowing to enable the proper CPU IRQ deassertion when the guest masks
some pending IRQs at PIC level.
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>
      d96e1737
  17. 23 8月, 2011 1 次提交
  19. 22 8月, 2011 1 次提交
  21. 21 3月, 2011 1 次提交
    • P
      change all other clock references to use nanosecond resolution accessors · 74475455
      由 Paolo Bonzini 提交于 
      This was done with:

    sed -i 's/qemu_get_clock\>/qemu_get_clock_ns/' \
        $(git grep -l 'qemu_get_clock\>' )
    sed -i 's/qemu_new_timer\>/qemu_new_timer_ns/' \
        $(git grep -l 'qemu_new_timer\>' )

after checking that get_clock and new_timer never occur twice
on the same line.  There were no missed occurrences; however, even
if there had been, they would have been caught by the compiler.

There was exactly one false positive in qemu_run_timers:

     -    current_time = qemu_get_clock (clock);
     +    current_time = qemu_get_clock_ns (clock);

which is of course not in this patch.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
      74475455
  23. 14 2月, 2011 1 次提交
  25. 04 2月, 2011 1 次提交
  27. 21 12月, 2010 1 次提交
  29. 11 12月, 2010 1 次提交
    • A
      Add endianness as io mem parameter · 2507c12a
      由 Alexander Graf 提交于 
      As stated before, devices can be little, big or native endian. The
target endianness is not of their concern, so we need to push things
down a level.

This patch adds a parameter to cpu_register_io_memory that allows a
device to choose its endianness. For now, all devices simply choose
native endian, because that's the same behavior as before.
Signed-off-by: NAlexander Graf <agraf@suse.de>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>
      2507c12a
  31. 16 11月, 2010 1 次提交
  33. 21 10月, 2010 1 次提交
  35. 19 6月, 2010 5 次提交
  37. 30 5月, 2010 1 次提交
  39. 22 3月, 2010 1 次提交
  41. 04 3月, 2010 1 次提交
    • J
      KVM: Rework VCPU state writeback API · ea375f9a
      由 Jan Kiszka 提交于 
      This grand cleanup drops all reset and vmsave/load related
synchronization points in favor of four(!) generic hooks:

- cpu_synchronize_all_states in qemu_savevm_state_complete
  (initial sync from kernel before vmsave)
- cpu_synchronize_all_post_init in qemu_loadvm_state
  (writeback after vmload)
- cpu_synchronize_all_post_init in main after machine init
- cpu_synchronize_all_post_reset in qemu_system_reset
  (writeback after system reset)

These writeback points + the existing one of VCPU exec after
cpu_synchronize_state map on three levels of writeback:

- KVM_PUT_RUNTIME_STATE (during runtime, other VCPUs continue to run)
- KVM_PUT_RESET_STATE   (on synchronous system reset, all VCPUs stopped)
- KVM_PUT_FULL_STATE    (on init or vmload, all VCPUs stopped as well)

This level is passed to the arch-specific VCPU state writing function
that will decide which concrete substates need to be written. That way,
no writer of load, save or reset functions that interact with in-kernel
KVM states will ever have to worry about synchronization again. That
also means that a lot of reasons for races, segfaults and deadlocks are
eliminated.

cpu_synchronize_state remains untouched, just as Anthony suggested. We
continue to need it before reading or writing of VCPU states that are
also tracked by in-kernel KVM subsystems.

Consequently, this patch removes many cpu_synchronize_state calls that
are now redundant, just like remaining explicit register syncs.
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
      ea375f9a
  43. 07 11月, 2009 1 次提交
    • G
      v3: don't call reset functions on cpu initialization · c1699988
      由 Glauber Costa 提交于 
      There is absolutely no need to call reset functions when initializing
devices. Since we are already registering them, calling qemu_system_reset()
should suffice. Actually, it is what happens when we reboot the machine,
and using the same process instead of a special case semantics will even
allow us to find bugs easier.

Furthermore, the fact that we initialize things like the cpu quite early,
leads to the need to introduce synchronization stuff like qemu_system_cond.
This patch removes it entirely. All we need to do is call qemu_system_reset()
only when we're already sure the system is up and running

I tested it with qemu (with and without io-thread) and qemu-kvm, and it
seems to be doing okay - although qemu-kvm uses a slightly different patch.

[ v2: user mode still needs cpu_reset, so put it in ifdef. ]
[ v3: leave qemu_system_cond for now. ]
Signed-off-by: NGlauber Costa <glommer@redhat.com>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>
      c1699988
  45. 05 10月, 2009 1 次提交
  47. 02 10月, 2009 2 次提交
  49. 11 9月, 2009 1 次提交
  51. 10 9月, 2009 1 次提交
  53. 28 8月, 2009 2 次提交
  55. 26 8月, 2009 1 次提交
  57. 17 7月, 2009 1 次提交
  59. 30 6月, 2009 1 次提交