Re: [PATCH 5/7] qmp: Add the qmp_query_sgx_capabilities()

[Philippe Mathieu-Daudé]

On 9/8/21 10:19 AM, Yang Zhong wrote:
> Libvirt can use qmp_query_sgx_capabilities() to get the host
> sgx capabilities.
> 
> Signed-off-by: Yang Zhong <yang.zhong@intel.com>
> ---
>  hw/i386/sgx.c              | 66 ++++++++++++++++++++++++++++++++++++++
>  include/hw/i386/sgx.h      |  1 +
>  qapi/misc-target.json      | 18 +++++++++++
>  target/i386/monitor.c      |  5 +++
>  tests/qtest/qmp-cmd-test.c |  1 +
>  5 files changed, 91 insertions(+)

> +SGXInfo *sgx_get_capabilities(Error **errp)
> +{
> +    SGXInfo *info = NULL;
> +    uint32_t eax, ebx, ecx, edx;
> +
> +    int fd = qemu_open_old("/dev/sgx_vepc", O_RDWR);
> +    if (fd < 0) {
> +        error_setg(errp, "SGX is not enabled in KVM");
> +        return NULL;
> +    }

Is this Linux specific?