The architected timer integration with the VGIC had some shortcomings in
that certain guest operations weren't fully supported.
This series tries to address these problems in providing level-triggered
semantics for the arch timer and VGIC integration and seeks to clarify
the behavior when setting/clearing the active state on the physical
distributor.
It also fixes a few other bugs in the VGIC code and finally adds support
for edge-triggered forwarded interrupts.
The edge-triggered forwarded interrupts code is untested but probably
better to clearly do something wrong and raise a warning.
Changes since v2:
- Various spelling and comment fixes
- Clarified timer example in Documentation and fixed EOIMode=1 explanation
- Added spin lock around process_queued_irq as pointed out by Andre.
Changes since v1:
- Sent out bug fixes for active state and UEFI reset as separate
patches.
- Fixed various spelling nits
- Rewrote proposed documentation file trying to address Eric's and
Marc's comments
- Rewrote kvm_timer_update_irq and kvm_timer_update_state according to
Marc's suggestion (thanks!)
- Added additional patch to support edge-triggered forwarded
interrupts.
Christoffer Dall (8):
KVM: Add kvm_arch_vcpu_{un}blocking callbacks
arm/arm64: KVM: arch_timer: Only schedule soft timer on vcpu_block
arm/arm64: KVM: vgic: Factor out level irq processing on guest exit
arm/arm64: KVM: Implement GICD_ICFGR as RO for PPIs
arm/arm64: KVM: Use appropriate define in VGIC reset code
arm/arm64: KVM: Add forwarded physical interrupts documentation
arm/arm64: KVM: Rework the arch timer to use level-triggered semantics
arm/arm64: KVM: Support edge-triggered forwarded interrupts
Documentation/virtual/kvm/arm/vgic-mapped-irqs.txt | 186 +++++++++++++++++++++
arch/arm/kvm/arm.c | 21 ++-
arch/mips/include/asm/kvm_host.h | 2 +
arch/powerpc/include/asm/kvm_host.h | 2 +
arch/s390/include/asm/kvm_host.h | 2 +
arch/x86/include/asm/kvm_host.h | 3 +
include/kvm/arm_arch_timer.h | 4 +-
include/kvm/arm_vgic.h | 3 -
include/linux/kvm_host.h | 2 +
virt/kvm/arm/arch_timer.c | 149 +++++++++++------
virt/kvm/arm/vgic.c | 172 +++++++++----------
virt/kvm/kvm_main.c | 3 +
12 files changed, 408 insertions(+), 141 deletions(-)
create mode 100644 Documentation/virtual/kvm/arm/vgic-mapped-irqs.txt
--
2.1.2.330.g565301e.dirty
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