# Re: \[PATCH v2 04/12\] powerpc/pseries/svm: Add a powerpc version of prot\_guest\_has()

- From: Michael Ellerman \<mpe@ellerman.id.au\>
- Date: 2021-08-17 12:38:32 
- List: linuxppc-dev
- Page: https://ratatoskr.run/linuxppc-dev/2021/08/212572
- Thread: https://ratatoskr.run/linuxppc-dev/2021/08/212359/t.md

```text
Tom Lendacky [ref] writes:
> Introduce a powerpc version of the prot_guest_has() function. This will
> be used to replace the powerpc mem_encrypt_active() implementation, so
> the implementation will initially only support the PATTR_MEM_ENCRYPT
> attribute.
>
> Cc: Michael Ellerman <mpe@ellerman.id.au>
> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> Cc: Paul Mackerras <redacted>
> Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
> ---
>  arch/powerpc/include/asm/protected_guest.h | 30 ++++++++++++++++++++++
>  arch/powerpc/platforms/pseries/Kconfig     |  1 +
>  2 files changed, 31 insertions(+)
>  create mode 100644 arch/powerpc/include/asm/protected_guest.h
>
> diff --git a/arch/powerpc/include/asm/protected_guest.h b/arch/powerpc/include/asm/protected_guest.h
> new file mode 100644
> index 000000000000..ce55c2c7e534
> --- /dev/null
> +++ b/arch/powerpc/include/asm/protected_guest.h
> @@ -0,0 +1,30 @@
> +/* SPDX-License-Identifier: GPL-2.0-only */
> +/*
> + * Protected Guest (and Host) Capability checks
> + *
> + * Copyright (C) 2021 Advanced Micro Devices, Inc.
> + *
> + * Author: Tom Lendacky [ref]
> + */
> +
> +#ifndef _POWERPC_PROTECTED_GUEST_H
> +#define _POWERPC_PROTECTED_GUEST_H

Minor nit, we would usually use _ASM_POWERPC_PROTECTED_GUEST_H

Otherwise looks OK to me.

Acked-by: Michael Ellerman <mpe@ellerman.id.au>

cheers
```