| Message ID | 20171207170630.592-24-christoffer.dall@linaro.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/arch/arm64/kvm/sys_regs_generic_v8.c b/arch/arm64/kvm/sys_regs_generic_v8.c index 969ade1d333d..8df4b4301696 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) + p->regval = read_sysreg(actlr_el1); + else + p->regval = vcpu_sys_reg(vcpu, ACTLR_EL1); return true; }
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@linaro.org> --- Notes: Changes since v1: - Fix bug in access_actlr that read the actlr_el1 and threw away the value. Whoops. arch/arm64/kvm/sys_regs_generic_v8.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)