Hi Isaku,
On 2/16/21 3:12 AM, Isaku Yamahata wrote:
> Switch to making a VM ioctl() call for KVM_CAP_READONLY_MEM, which may
> be conditional on VM type in recent versions of KVM, e.g. when TDX is
> supported.
>
> Signed-off-by: Isaku Yamahata <isaku.yamahata@xxxxxxxxx>
> ---
> accel/kvm/kvm-all.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c
> index 47516913b7..351c25a5cb 100644
> --- a/accel/kvm/kvm-all.c
> +++ b/accel/kvm/kvm-all.c
> @@ -2164,7 +2164,7 @@ static int kvm_init(MachineState *ms)
> }
>
> kvm_readonly_mem_allowed =
> - (kvm_check_extension(s, KVM_CAP_READONLY_MEM) > 0);
> + (kvm_vm_check_extension(s, KVM_CAP_READONLY_MEM) > 0);
Can this check with "recent KVM" be a problem with older ones?
Maybe for backward compatibility we need:
= (kvm_vm_check_extension(s, KVM_CAP_READONLY_MEM) > 0) ||
(kvm_check_extension(s, KVM_CAP_READONLY_MEM) > 0);
> kvm_eventfds_allowed =
> (kvm_check_extension(s, KVM_CAP_IOEVENTFD) > 0);
>
