Commit 870b4333 authored by Borislav Petkov's avatar Borislav Petkov

x86/ioremap: Fix CONFIG_EFI=n build

In order to use efi_mem_type(), one needs CONFIG_EFI enabled. Otherwise
that function is undefined. Use IS_ENABLED() to check and avoid the
ifdeffery as the compiler optimizes away the following unreachable code
then.

Fixes: 985e537a ("x86/ioremap: Map EFI runtime services data as encrypted for SEV")
Reported-by: default avatarRandy Dunlap <rdunlap@infradead.org>
Signed-off-by: default avatarBorislav Petkov <bp@suse.de>
Tested-by: default avatarRandy Dunlap <rdunlap@infradead.org>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: <stable@vger.kernel.org>
Link: https://lkml.kernel.org/r/7561e981-0d9b-d62c-0ef2-ce6007aff1ab@infradead.org
parent fb33c651
......@@ -115,6 +115,9 @@ static void __ioremap_check_other(resource_size_t addr, struct ioremap_desc *des
if (!sev_active())
return;
if (!IS_ENABLED(CONFIG_EFI))
return;
if (efi_mem_type(addr) == EFI_RUNTIME_SERVICES_DATA)
desc->flags |= IORES_MAP_ENCRYPTED;
}
......
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