On Tue, Apr 17, 2018 at 09:23:56AM +0100, Marc Zyngier wrote:
> While generating a message about guests probing for SVE/LORegions
> is a useful debugging tool, considering it an error is slightly
> over the top, as this is the only way the guest can find out
> about the presence of the feature.
>
> Let's turn these message into kvm_debug so that they can only
> be seen if CONFIG_DYNAMIC_DEBUG, and kept quiet otherwise.
>
> Signed-off-by: Marc Zyngier <marc.zyngier@xxxxxxx>
Acked-by: Christoffer Dall <christoffer.dall@xxxxxxx>
> ---
> arch/arm64/kvm/sys_regs.c | 6 ++----
> 1 file changed, 2 insertions(+), 4 deletions(-)
>
> diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
> index 806b0b126a64..6e3b969391fd 100644
> --- a/arch/arm64/kvm/sys_regs.c
> +++ b/arch/arm64/kvm/sys_regs.c
> @@ -996,14 +996,12 @@ static u64 read_id_reg(struct sys_reg_desc const *r, bool raz)
>
> if (id == SYS_ID_AA64PFR0_EL1) {
> if (val & (0xfUL << ID_AA64PFR0_SVE_SHIFT))
> - pr_err_once("kvm [%i]: SVE unsupported for guests, suppressing\n",
> - task_pid_nr(current));
> + kvm_debug("SVE unsupported for guests, suppressing\n");
>
> val &= ~(0xfUL << ID_AA64PFR0_SVE_SHIFT);
> } else if (id == SYS_ID_AA64MMFR1_EL1) {
> if (val & (0xfUL << ID_AA64MMFR1_LOR_SHIFT))
> - pr_err_once("kvm [%i]: LORegions unsupported for guests, suppressing\n",
> - task_pid_nr(current));
> + kvm_debug("LORegions unsupported for guests, suppressing\n");
>
> val &= ~(0xfUL << ID_AA64MMFR1_LOR_SHIFT);
> }
> --
> 2.14.2
>
