We can trap access to ACTLR_EL1 which we can later defer to only save/restore during vcpu_load and vcpu_put, so let's read the value directly from the CPU when necessary. Signed-off-by: Christoffer Dall <christoffer.dall@xxxxxxxxxx> --- arch/arm64/kvm/sys_regs_generic_v8.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/arch/arm64/kvm/sys_regs_generic_v8.c b/arch/arm64/kvm/sys_regs_generic_v8.c index 969ade1..348f227 100644 --- a/arch/arm64/kvm/sys_regs_generic_v8.c +++ b/arch/arm64/kvm/sys_regs_generic_v8.c @@ -38,7 +38,10 @@ static bool access_actlr(struct kvm_vcpu *vcpu, if (p->is_write) return ignore_write(vcpu, p); - p->regval = vcpu_sys_reg(vcpu, ACTLR_EL1); + if (vcpu->arch.sysregs_loaded_on_cpu) + read_sysreg(actlr_el1); + else + p->regval = vcpu_sys_reg(vcpu, ACTLR_EL1); return true; } -- 2.9.0
