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[Qemu-devel] [PATCH v3 00/20] GICv3 emulation

From: Peter Maydell
Subject: [Qemu-devel] [PATCH v3 00/20] GICv3 emulation
Date: Tue, 14 Jun 2016 15:38:12 +0100

This series implements emulation of the GICv3 interrupt controller.
It is based to some extent on previous patches from Shlomo and
Pavel, but the bulk of it has turned out to be new code. (The
combination of changing the underlying data structures, adding
support for TrustZone and implementing proper GICv3 behaviour rather
than borrowing fragments of GICv2 emulation code meant there wasn't
much left to reuse.) I've tried to reflect this in the various
authorship credits on the patches, but please let me know if you
feel I got anything miscredited one way or the other.

Key points about the GICv3 emulated here:
 * "non-legacy" only, ie system registers and affinity routing
 * TrustZone is implemented
 * no virtualization support
 * only the "core" GICv3, so no LPI support (via ITS or otherwise)
 * no attempt to work around the Linux guest kernel bug fixed
   in commit 7c9b973061b0 (so you need that fix for your guest to
   boot with this GICv3)

Changes v2->v3: (all pretty minor)
 * add missing blank lines in tests/test-bitops.c
 * fixed erroneous comment
 * fixed missing shift in gicv3_cache_target_cpustate()
 * tweaked assertion in gicv3_set_irq()
 * corrected condition governing when GICD_NSACR and GICR_NSACR are RAZ/WI
 * dropped the RFC KVM save/restore patches for now
   (they wouldn't have changed and aren't going to get into QEMU 2.7
   since the kernel side of the interface is not going to hit the
   kernel's merge window; will pick them back up later)

The following patches are the only ones that still need review:

08    hw/intc/arm_gicv3: Add vmstate descriptors
10    hw/intc/arm_gicv3: Implement functions to identify next pending irq
11    hw/intc/arm_gicv3: Implement GICv3 distributor registers
12    hw/intc/arm_gicv3: Implement GICv3 redistributor registers
15    hw/intc/arm_gicv3: Implement GICv3 CPU interface registers
16    hw/intc/arm_gicv3: Implement gicv3_cpuif_update()
18    hw/intc/arm_gicv3: Add IRQ handling CPU interface registers

-- PMM

Pavel Fedin (3):
  target-arm: Add mp-affinity property for ARM CPU class
  hw/intc/arm_gicv3: Add state information
  hw/intc/arm_gicv3: Add vmstate descriptors

Peter Maydell (14):
  migration: Define VMSTATE_UINT64_2DARRAY
  bitops.h: Implement half-shuffle and half-unshuffle ops
  target-arm: Define new arm_is_el3_or_mon() function
  target-arm: Provide hook to tell GICv3 about changes of security state
  hw/intc/arm_gicv3: Move irq lines into GICv3CPUState structure
  hw/intc/arm_gicv3: Implement functions to identify next pending irq
  hw/intc/arm_gicv3: Wire up distributor and redistributor MMIO regions
  hw/intc/arm_gicv3: Implement gicv3_set_irq()
  hw/intc/arm_gicv3: Implement GICv3 CPU interface registers
  hw/intc/arm_gicv3: Implement gicv3_cpuif_update()
  hw/intc/arm_gicv3: Implement CPU i/f SGI generation registers
  hw/intc/arm_gicv3: Add IRQ handling CPU interface registers
  target-arm/machine.c: Allow user to request GICv3 emulation
  target-arm/monitor.c: Advertise emulated GICv3 in capabilities

Shlomo Pongratz (3):
  hw/intc/arm_gicv3: ARM GICv3 device framework
  hw/intc/arm_gicv3: Implement GICv3 distributor registers
  hw/intc/arm_gicv3: Implement GICv3 redistributor registers

 hw/intc/Makefile.objs              |    4 +
 hw/intc/arm_gicv3.c                |  400 +++++++++++
 hw/intc/arm_gicv3_common.c         |  225 +++++-
 hw/intc/arm_gicv3_cpuif.c          | 1346 ++++++++++++++++++++++++++++++++++++
 hw/intc/arm_gicv3_dist.c           |  879 +++++++++++++++++++++++
 hw/intc/arm_gicv3_kvm.c            |    7 +
 hw/intc/arm_gicv3_redist.c         |  562 +++++++++++++++
 hw/intc/gicv3_internal.h           |  331 +++++++++
 include/hw/intc/arm_gicv3.h        |   32 +
 include/hw/intc/arm_gicv3_common.h |  215 +++++-
 include/migration/vmstate.h        |    6 +
 include/qemu/bitops.h              |  108 +++
 target-arm/cpu.c                   |   10 +
 target-arm/cpu.h                   |   47 +-
 target-arm/helper.c                |    2 +
 target-arm/internals.h             |    8 +
 target-arm/machine.c               |    3 +-
 target-arm/monitor.c               |    3 +-
 target-arm/op_helper.c             |    4 +
 tests/test-bitops.c                |   72 ++
 trace-events                       |   41 ++
 21 files changed, 4285 insertions(+), 20 deletions(-)
 create mode 100644 hw/intc/arm_gicv3.c
 create mode 100644 hw/intc/arm_gicv3_cpuif.c
 create mode 100644 hw/intc/arm_gicv3_dist.c
 create mode 100644 hw/intc/arm_gicv3_redist.c
 create mode 100644 hw/intc/gicv3_internal.h
 create mode 100644 include/hw/intc/arm_gicv3.h


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