Re: [RFC PATCH v3 06/36] i386/tdx: Get tdx_capabilities via KVM_TDX_CAPABILITIES

[Isaku Yamahata]

On Thu, Mar 17, 2022 at 09:58:43PM +0800,
Xiaoyao Li <xiaoyao.li@intel.com> wrote:

> diff --git a/target/i386/kvm/tdx.c b/target/i386/kvm/tdx.c
> index e3b94373b316..bed337e5ba18 100644
> --- a/target/i386/kvm/tdx.c
> +++ b/target/i386/kvm/tdx.c
> @@ -14,10 +14,77 @@
>  #include "qemu/osdep.h"
>  #include "qapi/error.h"
>  #include "qom/object_interfaces.h"
> +#include "sysemu/kvm.h"
>  
>  #include "hw/i386/x86.h"
>  #include "tdx.h"
>  
> +enum tdx_ioctl_level{
> +    TDX_VM_IOCTL,
> +    TDX_VCPU_IOCTL,
> +};
> +
> +static int __tdx_ioctl(void *state, enum tdx_ioctl_level level, int cmd_id,
> +                        __u32 metadata, void *data)
> +{
> +    struct kvm_tdx_cmd tdx_cmd;
> +    int r;
> +
> +    memset(&tdx_cmd, 0x0, sizeof(tdx_cmd));
> +
> +    tdx_cmd.id = cmd_id;
> +    tdx_cmd.metadata = metadata;
> +    tdx_cmd.data = (__u64)(unsigned long)data;
> +
> +    switch (level) {
> +    case TDX_VM_IOCTL:
> +        r = kvm_vm_ioctl(kvm_state, KVM_MEMORY_ENCRYPT_OP, &tdx_cmd);
> +        break;
> +    case TDX_VCPU_IOCTL:
> +        r = kvm_vcpu_ioctl(state, KVM_MEMORY_ENCRYPT_OP, &tdx_cmd);
> +        break;
> +    default:
> +        error_report("Invalid tdx_ioctl_level %d", level);
> +        exit(1);
> +    }
> +
> +    return r;
> +}
> +
> +#define tdx_vm_ioctl(cmd_id, metadata, data) \
> +        __tdx_ioctl(NULL, TDX_VM_IOCTL, cmd_id, metadata, data)
> +
> +#define tdx_vcpu_ioctl(cpu, cmd_id, metadata, data) \
> +        __tdx_ioctl(cpu, TDX_VCPU_IOCTL, cmd_id, metadata, data)

No point to use macro.  Normal (inline) function can works.

-- 
Isaku Yamahata <isaku.yamahata@gmail.com>