Commit aca18585 authored by Marc Zyngier's avatar Marc Zyngier Committed by Oliver Upton

KVM: arm64: Program the timer traps with VHE layout in hVHE mode

Just like the rest of the timer code, we need to shift the enable
bits around when HCR_EL2.E2H is set, which is the case in hVHE mode.
Signed-off-by: default avatarMarc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20230609162200.2024064-15-maz@kernel.orgSigned-off-by: default avatarOliver Upton <oliver.upton@linux.dev>
parent 75c76ab5
......@@ -17,21 +17,24 @@ void __kvm_timer_set_cntvoff(u64 cntvoff)
}
/*
* Should only be called on non-VHE systems.
* Should only be called on non-VHE or hVHE setups.
* VHE systems use EL2 timers and configure EL1 timers in kvm_timer_init_vhe().
*/
void __timer_disable_traps(struct kvm_vcpu *vcpu)
{
u64 val;
u64 val, shift = 0;
if (has_hvhe())
shift = 10;
/* Allow physical timer/counter access for the host */
val = read_sysreg(cnthctl_el2);
val |= CNTHCTL_EL1PCTEN | CNTHCTL_EL1PCEN;
val |= (CNTHCTL_EL1PCTEN | CNTHCTL_EL1PCEN) << shift;
write_sysreg(val, cnthctl_el2);
}
/*
* Should only be called on non-VHE systems.
* Should only be called on non-VHE or hVHE setups.
* VHE systems use EL2 timers and configure EL1 timers in kvm_timer_init_vhe().
*/
void __timer_enable_traps(struct kvm_vcpu *vcpu)
......@@ -50,5 +53,10 @@ void __timer_enable_traps(struct kvm_vcpu *vcpu)
else
clr |= CNTHCTL_EL1PCTEN;
if (has_hvhe()) {
clr <<= 10;
set <<= 10;
}
sysreg_clear_set(cnthctl_el2, clr, set);
}
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