Re: [PATCH v6 43/64] KVM: arm64: nv: arch_timer: Support hyp timer emulation
From: Alexandru Elisei <hidden>
Date: 2022-03-07 15:24:26
Also in:
kvm, kvmarm
Hi, On Fri, Jan 28, 2022 at 12:18:51PM +0000, Marc Zyngier wrote:
From: Christoffer Dall <redacted> Emulating EL2 also means emulating the EL2 timers. To do so, we expand our timer framework to deal with at most 4 timers. At any given time, two timers are using the HW timers, and the two others are purely emulated. The role of deciding which is which at any given time is left to a mapping function which is called every time we need to make such a decision. Signed-off-by: Christoffer Dall <redacted> [maz: added CNTVOFF support, general reworking for v4.8] Signed-off-by: Marc Zyngier <maz@kernel.org> --- arch/arm64/include/asm/kvm_host.h | 4 + arch/arm64/kvm/arch_timer.c | 165 ++++++++++++++++++++++++++++-- arch/arm64/kvm/sys_regs.c | 7 +- arch/arm64/kvm/trace_arm.h | 6 +- arch/arm64/kvm/vgic/vgic.c | 15 +++ include/kvm/arm_arch_timer.h | 8 +- include/kvm/arm_vgic.h | 1 + 7 files changed, 194 insertions(+), 12 deletions(-)
[..]
quoted hunk ↗ jump to hunk
@@ -1301,6 +1445,7 @@ static void set_timer_irqs(struct kvm *kvm, int vtimer_irq, int ptimer_irq) kvm_for_each_vcpu(i, vcpu, kvm) { vcpu_vtimer(vcpu)->irq.irq = vtimer_irq; vcpu_ptimer(vcpu)->irq.irq = ptimer_irq; + /* TODO: Add support for hv/hp timers */ } }@@ -1311,6 +1456,8 @@ int kvm_arm_timer_set_attr(struct kvm_vcpu *vcpu, struct kvm_device_attr *attr) struct arch_timer_context *ptimer = vcpu_ptimer(vcpu); int irq; + /* TODO: Add support for hv/hp timers */
Is the patch unfinished? Thanks, Alex _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel