[PATCH 55/59] arm64: KVM: nv: Add handling of EL2-specific timer registers

Marc Zyngier
2019-06-21T09:40:51Z

Add the required handling for EL2 and EL02 registers, as
well as EL1 registers used in the E2H context.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
---
arch/arm64/kvm/sys_regs.c | 72 +++++++++++++++++++++++++++++++++++++++
1 file changed, 72 insertions(+)

diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
index ba3bcd29c02d..0bd6a66b621e 100644
--- a/arch/arm64/kvm/sys_regs.c
+++ b/arch/arm64/kvm/sys_regs.c
@@ -1361,20 +1361,92 @@ static bool access_arch_timer(struct kvm_vcpu *vcpu,

switch (reg) {
case SYS_CNTP_TVAL_EL0:
+ if (vcpu_mode_el2(vcpu) && vcpu_el2_e2h_is_set(vcpu))
+ tmr = TIMER_HPTIMER;
+ else
+ tmr = TIMER_PTIMER;
+ treg = TIMER_REG_TVAL;
+ break;
+
case SYS_AARCH32_CNTP_TVAL:
+ case SYS_CNTP_TVAL_EL02:
tmr = TIMER_PTIMER;
treg = TIMER_REG_TVAL;
break;
+
+ case SYS_CNTV_TVAL_EL02:
+ tmr = TIMER_VTIMER;
+ treg = TIMER_REG_TVAL;
+ break;
+
+ case SYS_CNTHP_TVAL_EL2:
+ tmr = TIMER_HPTIMER;
+ treg = TIMER_REG_TVAL;
+ break;
+
+ case SYS_CNTHV_TVAL_EL2:
+ tmr = TIMER_HVTIMER;
+ treg = TIMER_REG_TVAL;
+ break;
+
case SYS_CNTP_CTL_EL0:
+ if (vcpu_mode_el2(vcpu) && vcpu_el2_e2h_is_set(vcpu))
+ tmr = TIMER_HPTIMER;
+ else
+ tmr = TIMER_PTIMER;
+ treg = TIMER_REG_CTL;
+ break;
+
case SYS_AARCH32_CNTP_CTL:
+ case SYS_CNTP_CTL_EL02:
tmr = TIMER_PTIMER;
treg = TIMER_REG_CTL;
break;
+
+ case SYS_CNTV_CTL_EL02:
+ tmr = TIMER_VTIMER;
+ treg = TIMER_REG_CTL;
+ break;
+
+ case SYS_CNTHP_CTL_EL2:
+ tmr = TIMER_HPTIMER;
+ treg = TIMER_REG_CTL;
+ break;
+
+ case SYS_CNTHV_CTL_EL2:
+ tmr = TIMER_HVTIMER;
+ treg = TIMER_REG_CTL;
+ break;
+
case SYS_CNTP_CVAL_EL0:
+ if (vcpu_mode_el2(vcpu) && vcpu_el2_e2h_is_set(vcpu))
+ tmr = TIMER_HPTIMER;
+ else
+ tmr = TIMER_PTIMER;
+ treg = TIMER_REG_CVAL;
+ break;
+
case SYS_AARCH32_CNTP_CVAL:
+ case SYS_CNTP_CVAL_EL02:
tmr = TIMER_PTIMER;
treg = TIMER_REG_CVAL;
break;
+
+ case SYS_CNTV_CVAL_EL02:
+ tmr = TIMER_VTIMER;
+ treg = TIMER_REG_CVAL;
+ break;
+
+ case SYS_CNTHP_CVAL_EL2:
+ tmr = TIMER_HPTIMER;
+ treg = TIMER_REG_CVAL;
+ break;
+
+ case SYS_CNTHV_CVAL_EL2:
+ tmr = TIMER_HVTIMER;
+ treg = TIMER_REG_CVAL;
+ break;
+
case SYS_CNTVOFF_EL2:
tmr = TIMER_VTIMER;
treg = TIMER_REG_VOFF;
--
2.20.1