On 22/12/15 08:08, Shannon Zhao wrote:
> From: Shannon Zhao <shannon.z...@linaro.org>
>
> Since the reset value of PMINTENSET and PMINTENCLR is UNKNOWN, use
> reset_unknown for its reset handler. Add a handler to emulate writing
> PMINTENSET or PMINTENCLR register.
>
> Signed-off-by: Shannon Zhao <shannon.z...@linaro.org>
> ---
> arch/arm64/kvm/sys_regs.c | 27 +++++++++++++++++++++++----
> 1 file changed, 23 insertions(+), 4 deletions(-)
>
> diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
> index 3416881..24ce4fe 100644
> --- a/arch/arm64/kvm/sys_regs.c
> +++ b/arch/arm64/kvm/sys_regs.c
> @@ -644,6 +644,25 @@ static bool access_pmcnten(struct kvm_vcpu *vcpu, struct
> sys_reg_params *p,
> return true;
> }
>
> +static bool access_pminten(struct kvm_vcpu *vcpu, struct sys_reg_params *p,
> + const struct sys_reg_desc *r)
> +{
> + u64 mask = kvm_pmu_valid_counter_mask(vcpu);
> +
> + if (p->is_write) {
> + if (r->Op2 & 0x1)
> + /* accessing PMINTENSET_EL1 */
> + vcpu_sys_reg(vcpu, r->reg) |= (p->regval & mask);
> + else
> + /* accessing PMINTENCLR_EL1 */
> + vcpu_sys_reg(vcpu, r->reg) &= ~(p->regval & mask);
> + } else {
> + p->regval = vcpu_sys_reg(vcpu, r->reg) & mask;
> + }
> +
> + return true;
> +}
> +
Same bug again.
M.
--
Jazz is not dead. It just smells funny...
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