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treewide: Replace the use of mem_encrypt_active() with cc_platform_has()

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Replace uses of mem_encrypt_active() with calls to cc_platform_has() with
the CC_ATTR_MEM_ENCRYPT attribute.

Remove the implementation of mem_encrypt_active() across all arches.

For s390, since the default implementation of the cc_platform_has()
matches the s390 implementation of mem_encrypt_active(), cc_platform_has()
does not need to be implemented in s390 (the config option
ARCH_HAS_CC_PLATFORM is not set).

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20210928191009.32551-9-bp@alien8.de
This commit is contained in:
Tom Lendacky
2021-09-08 17:58:39 -05:00
committed by Borislav Petkov
parent 6283f2effb
commit e9d1d2bb75
18 changed files with 36 additions and 40 deletions
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4
include/linux/mem_encrypt.h
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@@ -16,10 +16,6 @@
#include <asm/mem_encrypt.h>
#else /* !CONFIG_ARCH_HAS_MEM_ENCRYPT */
static inline bool mem_encrypt_active(void) { return false; }
#endif /* CONFIG_ARCH_HAS_MEM_ENCRYPT */
#ifdef CONFIG_AMD_MEM_ENCRYPT