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| author |   Vincenzo Frascino <vincenzo.frascino@arm.com> | 2021-03-15 13:20:16 +0000 |
|---|---|---|
| committer |   Catalin Marinas <catalin.marinas@arm.com> | 2021-04-11 10:56:40 +0100 |
| commit | d8969752cc4e3294074ff0582de42d0e3c982eba (patch) | |
| tree | 7a4c0fa0bc616b1a300a6b9906182019e3480c8f /arch/arm64 | |
| parent | arm64: mte: Enable TCO in functions that can read beyond buffer limits (diff) | |
| download | linux-dev-d8969752cc4e3294074ff0582de42d0e3c982eba.tar.xz linux-dev-d8969752cc4e3294074ff0582de42d0e3c982eba.zip | |
arm64: mte: Conditionally compile mte_enable_kernel_*()
mte_enable_kernel_*() are not needed if KASAN_HW is disabled.
Add ash defines around the functions to conditionally compile the
functions.
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Link: https://lore.kernel.org/r/20210315132019.33202-7-vincenzo.frascino@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64')
| -rw-r--r-- | arch/arm64/kernel/mte.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm64/kernel/mte.c b/arch/arm64/kernel/mte.c index 9362928ba0d5..50f0724c8d8f 100644 --- a/arch/arm64/kernel/mte.c +++ b/arch/arm64/kernel/mte.c @@ -26,9 +26,11 @@ u64 gcr_kernel_excl __ro_after_init; static bool report_fault_once = true; +#ifdef CONFIG_KASAN_HW_TAGS /* Whether the MTE asynchronous mode is enabled. */ DEFINE_STATIC_KEY_FALSE(mte_async_mode); EXPORT_SYMBOL_GPL(mte_async_mode); +#endif static void mte_sync_page_tags(struct page *page, pte_t *ptep, bool check_swap) { @@ -120,6 +122,7 @@ static inline void __mte_enable_kernel(const char *mode, unsigned long tcf) pr_info_once("MTE: enabled in %s mode at EL1\n", mode); } +#ifdef CONFIG_KASAN_HW_TAGS void mte_enable_kernel_sync(void) { /* @@ -147,6 +150,7 @@ void mte_enable_kernel_async(void) if (!system_uses_mte_async_mode()) static_branch_enable(&mte_async_mode); } +#endif void mte_set_report_once(bool state) { |