This patch series adds support for the architected timer for the
guest. It relies on the VGIC code to inject timer interrupts.
Some of the aspects are quite ugly, like the offloading of the host
interrupt handler to KVM, and the host switch from virtual to physical
timer. If someone has a better idea, I'm all ears.
It is also available as a branch there:
git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git kvm-arm-timer-3.4-rc7
Marc Zyngier (10):
ARM: arch_timers: enable the use of the virtual timer
ARM: arch_timers: register a time/cycle counter
ARM: arch_timers: give the virtual timer its own interrupt handler
ARM: arch_timers: dynamic switch to physical timer and virtual timer
offloading
ARM: KVM: Allow the host to use the physical timer from PL1
ARM: KVM: VGIC: Implement kvm_vgic_get_current_vcpu()
ARM: KVM: arch_timers: Add minimal infrastructure
ARM: KVM: arch_timers: Add guest timer core support
ARM: KVM: arch_timers: Add timer world switch
ARM: KVM: arch_timers: Wire the init code and config option
arch/arm/include/asm/arch_timer.h | 14 ++
arch/arm/include/asm/kvm_arch_timer.h | 59 ++++++
arch/arm/include/asm/kvm_host.h | 5 +
arch/arm/include/asm/kvm_vgic.h | 6 +
arch/arm/kernel/arch_timer.c | 330 +++++++++++++++++++++++++++------
arch/arm/kernel/asm-offsets.c | 8 +
arch/arm/kvm/Kconfig | 7 +
arch/arm/kvm/Makefile | 1 +
arch/arm/kvm/arm.c | 13 ++
arch/arm/kvm/init.S | 5 +
arch/arm/kvm/interrupts.S | 66 +++++++-
arch/arm/kvm/timer.c | 158 ++++++++++++++++
arch/arm/kvm/vgic.c | 9 +
13 files changed, 620 insertions(+), 61 deletions(-)
create mode 100644 arch/arm/include/asm/kvm_arch_timer.h
create mode 100644 arch/arm/kvm/timer.c
--
1.7.7.1
