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| author |   Mark Brown <broonie@kernel.org> | 2019-12-09 18:12:15 +0000 |
|---|---|---|
| committer |   Will Deacon <will@kernel.org> | 2020-01-15 14:11:17 +0000 |
| commit | c2d92353b28f8542c6b3150900b38c94b1d61480 (patch) | |
| tree | 052c44f61d24b70c1e5a8d303c14f51f8518a5db /arch/arm64/kernel/cpufeature.c | |
| parent | arm64: Add initial support for E0PD (diff) | |
| download | linux-dev-c2d92353b28f8542c6b3150900b38c94b1d61480.tar.xz linux-dev-c2d92353b28f8542c6b3150900b38c94b1d61480.zip | |
arm64: Factor out checks for KASLR in KPTI code into separate function
In preparation for integrating E0PD support with KASLR factor out the
checks for interaction between KASLR and KPTI done in boot context into
a new function kaslr_requires_kpti(), in the process clarifying the
distinction between what we do in boot context and what we do at
runtime.
Signed-off-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'arch/arm64/kernel/cpufeature.c')
| -rw-r--r-- | arch/arm64/kernel/cpufeature.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c index 9d578e720168..88aa5ab02926 100644 --- a/arch/arm64/kernel/cpufeature.c +++ b/arch/arm64/kernel/cpufeature.c @@ -1009,7 +1009,7 @@ static bool unmap_kernel_at_el0(const struct arm64_cpu_capabilities *entry, } /* Useful for KASLR robustness */ - if (IS_ENABLED(CONFIG_RANDOMIZE_BASE) && kaslr_offset() > 0) { + if (kaslr_requires_kpti()) { if (!__kpti_forced) { str = "KASLR"; __kpti_forced = 1; |