linux-kernel - Re: [PATCH 01/11] mm: Introduce a function to check for virtualization protection features

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Message-ID: <e7208040-9ccc-b2df-b2d3-a06ed793908b@amd.com>
Date:   Wed, 11 Aug 2021 10:39:54 -0500
From:   Tom Lendacky <thomas.lendacky@....com>
To:     "Kuppuswamy, Sathyanarayanan" 
        <sathyanarayanan.kuppuswamy@...ux.intel.com>,
        linux-kernel@...r.kernel.org, x86@...nel.org,
        linuxppc-dev@...ts.ozlabs.org, linux-s390@...r.kernel.org,
        iommu@...ts.linux-foundation.org, kvm@...r.kernel.org,
        linux-efi@...r.kernel.org, platform-driver-x86@...r.kernel.org,
        linux-graphics-maintainer@...are.com,
        amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        kexec@...ts.infradead.org, linux-fsdevel@...r.kernel.org
Cc:     Borislav Petkov <bp@...en8.de>,
        Brijesh Singh <brijesh.singh@....com>,
        Joerg Roedel <joro@...tes.org>,
        Andi Kleen <ak@...ux.intel.com>,
        Tianyu Lan <Tianyu.Lan@...rosoft.com>
Subject: Re: [PATCH 01/11] mm: Introduce a function to check for
 virtualization protection features

On 8/11/21 9:53 AM, Kuppuswamy, Sathyanarayanan wrote:
> On 7/27/21 3:26 PM, Tom Lendacky wrote:
>> diff --git a/include/linux/protected_guest.h
>> b/include/linux/protected_guest.h
>> new file mode 100644
>> index 000000000000..f8ed7b72967b
>> --- /dev/null
>> +++ b/include/linux/protected_guest.h
>> @@ -0,0 +1,32 @@
>> +/* SPDX-License-Identifier: GPL-2.0-only */
>> +/*
>> + * Protected Guest (and Host) Capability checks
>> + *
>> + * Copyright (C) 2021 Advanced Micro Devices, Inc.
>> + *
>> + * Author: Tom Lendacky<thomas.lendacky@....com>
>> + */
>> +
>> +#ifndef _PROTECTED_GUEST_H
>> +#define _PROTECTED_GUEST_H
>> +
>> +#ifndef __ASSEMBLY__
> 
> Can you include headers for bool type and false definition?

Can do.

Thanks,
Tom

> 
> --- a/include/linux/protected_guest.h
> +++ b/include/linux/protected_guest.h
> @@ -12,6 +12,9 @@
> 
>  #ifndef __ASSEMBLY__
> 
> +#include <linux/types.h>
> +#include <linux/stddef.h>
> 
> Otherwise, I see following errors in multi-config auto testing.
> 
> include/linux/protected_guest.h:40:15: error: unknown type name 'bool'
> include/linux/protected_guest.h:40:63: error: 'false' undeclared (first
> use in this functi
>