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Introduce a powerpc version of the cc_platform_has() function. This will be used to replace the powerpc mem_encrypt_active() implementation, so the implementation will initially only support the CC_ATTR_MEM_ENCRYPT attribute. Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> Signed-off-by: Borislav Petkov <bp@suse.de> Acked-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lkml.kernel.org/r/20210928191009.32551-5-bp@alien8.de
27 lines
496 B
C
27 lines
496 B
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Confidential Computing Platform Capability checks
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*
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* Copyright (C) 2021 Advanced Micro Devices, Inc.
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*
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* Author: Tom Lendacky <thomas.lendacky@amd.com>
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*/
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#include <linux/export.h>
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#include <linux/cc_platform.h>
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#include <asm/machdep.h>
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#include <asm/svm.h>
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bool cc_platform_has(enum cc_attr attr)
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{
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switch (attr) {
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case CC_ATTR_MEM_ENCRYPT:
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return is_secure_guest();
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default:
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return false;
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}
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}
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EXPORT_SYMBOL_GPL(cc_platform_has);
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