On Fri, Sep 09, 2022 at 07:45:52AM -0700, Elliot Berman wrote:
> Do not switch kvm_mode to KVM_MODE_PROTECTED if hypervisor mode is not
> available. This prevents "Protected KVM" cpu capability being reported
> when Linux is booting in EL1 and would not have KVM enabled.
>
> Signed-off-by: Elliot Berman <quic_eberman@xxxxxxxxxxx>
> ---
> arch/arm64/kvm/arm.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c
> index 8fe73ee5fa84..861f4b388879 100644
> --- a/arch/arm64/kvm/arm.c
> +++ b/arch/arm64/kvm/arm.c
> @@ -2272,7 +2272,9 @@ static int __init early_kvm_mode_cfg(char *arg)
> return -EINVAL;
>
> if (strcmp(arg, "protected") == 0) {
> - if (!is_kernel_in_hyp_mode())
> + if (!is_hyp_mode_available())
> + kvm_mode = KVM_MODE_DEFAULT;
I think kvm_mode is already KVM_MODE_DEFAULT at this point. You may want
to print a warning instead.
--
Catalin
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