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ANDROID: arm64: disable LSE when building the FIPS140 module

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The arm64 LSE atomics implementation uses both alternatives patching and
jump label patching, both of which need to be selectively disabled when
building the FIPS140 module, or the hashing of the .text section no
longer works.

We already disable jump labels in generic code, but this uncovers a
rather nasty circular include dependency, as the jump label fallback
code uses atomics, which are provided by the LSE code if enabled.

So let's disable LSE as well when building the FIPS140 module: this does
not have any impact on the code, as no code patching goes on in this
module anyway, but it avoids #include hell.

Bug: 153614920
Bug: 188620248
Change-Id: Ia3d823fa3a309777f0c955d619ae8b139dc74061
Signed-off-by: Ard Biesheuvel <ardb@google.com>
This commit is contained in:
Ard Biesheuvel
2021-07-12 07:49:03 +00:00
parent 1061ef0493
commit bd7d13c36e
1 changed files with 1 additions and 1 deletions
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2
arch/arm64/include/asm/lse.h
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@@ -4,7 +4,7 @@
#include <asm/atomic_ll_sc.h>
#ifdef CONFIG_ARM64_LSE_ATOMICS
#if defined(CONFIG_ARM64_LSE_ATOMICS) && !defined(BUILD_FIPS140_KO)
#define __LSE_PREAMBLE ".arch_extension lse\n"