# Re: \[PATCH v3 2/8\] mm: Introduce a function to check for confidential computing features

- From: Borislav Petkov \<bp@alien8.de\>
- Date: 2021-09-10 15:02:26 
- List: kexec
- Page: https://ratatoskr.run/kexec/2021/09/213969
- Thread: https://ratatoskr.run/linuxppc-dev/2021/09/213849/t.md

```text
On Wed, Sep 08, 2021 at 05:58:33PM -0500, Tom Lendacky wrote:
> In prep for other confidential computing technologies, introduce a generic

preparation

> helper function, cc_platform_has(), that can be used to check for specific
> active confidential computing attributes, like memory encryption. This is
> intended to eliminate having to add multiple technology-specific checks to
> the code (e.g. if (sev_active() || tdx_active())).

...

> diff --git a/include/linux/cc_platform.h b/include/linux/cc_platform.h
> new file mode 100644
> index 000000000000..253f3ea66cd8
> --- /dev/null
> +++ b/include/linux/cc_platform.h
> @@ -0,0 +1,88 @@
> +/* SPDX-License-Identifier: GPL-2.0-only */
> +/*
> + * Confidential Computing Platform Capability checks
> + *
> + * Copyright (C) 2021 Advanced Micro Devices, Inc.
> + *
> + * Author: Tom Lendacky [ref]
> + */
> +
> +#ifndef _CC_PLATFORM_H

	_LINUX_CC_PLATFORM_H

> +#define _CC_PLATFORM_H

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette

_______________________________________________
kexec mailing list
kexec@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/kexec
```