On 22/12/15 08:08, Shannon Zhao wrote:
> From: Shannon Zhao <shannon.zhao@xxxxxxxxxx>
>
> Since the reset value of PMSELR_EL0 is UNKNOWN, use reset_unknown for
> its reset handler. When reading PMSELR, return the PMSELR.SEL field to
> guest.
>
> Signed-off-by: Shannon Zhao <shannon.zhao@xxxxxxxxxx>
> ---
> arch/arm64/kvm/sys_regs.c | 16 ++++++++++++++--
> 1 file changed, 14 insertions(+), 2 deletions(-)
>
> diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
> index c60047e..f9985fc 100644
> --- a/arch/arm64/kvm/sys_regs.c
> +++ b/arch/arm64/kvm/sys_regs.c
> @@ -474,6 +474,18 @@ static bool access_pmcr(struct kvm_vcpu *vcpu, struct sys_reg_params *p,
> return true;
> }
>
> +static bool access_pmselr(struct kvm_vcpu *vcpu, struct sys_reg_params *p,
> + const struct sys_reg_desc *r)
> +{
> + if (p->is_write)
> + vcpu_sys_reg(vcpu, r->reg) = p->regval;
> + else
> + /* return PMSELR.SEL field */
> + p->regval = vcpu_sys_reg(vcpu, r->reg) & ARMV8_COUNTER_MASK;
Same 32bit bug again.
M.
--
Jazz is not dead. It just smells funny...
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