Re: [RFC PATCH v4 06/36] i386/tdx: Get tdx_capabilities via KVM_TDX_CAPABILITIES

[Gerd Hoffmann]

  Hi,

> +    do {
> +        size = sizeof(struct kvm_tdx_capabilities) +
> +               max_ent * sizeof(struct kvm_tdx_cpuid_config);
> +        caps = g_malloc0(size);
> +        caps->nr_cpuid_configs = max_ent;
> +
> +        r = tdx_platform_ioctl(KVM_TDX_CAPABILITIES, 0, caps);
> +        if (r == -E2BIG) {
> +            g_free(caps);
> +            max_ent *= 2;
> +        } else if (r < 0) {
> +            error_report("KVM_TDX_CAPABILITIES failed: %s\n", strerror(-r));
> +            exit(1);
> +        }
> +    }
> +    while (r == -E2BIG);

This should have a limit for the number of loop runs.

take care,
  Gerd