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| author | Catalin Marinas <catalin.marinas@arm.com> | 2020-07-31 19:09:50 +0200 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2020-07-31 19:09:50 +0200 |
| commit | 18aa3bd58b1428d1927fe11f85ad444423d4fc59 (patch) | |
| tree | 40171776fd498d9ae9378c9559fcada83c92ee17 /arch/arm64/Kconfig | |
| parent | Merge branches 'for-next/misc', 'for-next/vmcoreinfo', 'for-next/cpufeature',... (diff) | |
| parent | arm64: tlb: Use the TLBI RANGE feature in arm64 (diff) | |
| download | linux-18aa3bd58b1428d1927fe11f85ad444423d4fc59.tar.xz linux-18aa3bd58b1428d1927fe11f85ad444423d4fc59.zip | |
Merge branch 'for-next/tlbi' into for-next/core
* for-next/tlbi:
: Support for TTL (translation table level) hint in the TLB operations
arm64: tlb: Use the TLBI RANGE feature in arm64
arm64: enable tlbi range instructions
arm64: tlb: Detect the ARMv8.4 TLBI RANGE feature
arm64: tlb: don't set the ttl value in flush_tlb_page_nosync
arm64: Shift the __tlbi_level() indentation left
arm64: tlb: Set the TTL field in flush_*_tlb_range
arm64: tlb: Set the TTL field in flush_tlb_range
tlb: mmu_gather: add tlb_flush_*_range APIs
arm64: Add tlbi_user_level TLB invalidation helper
arm64: Add level-hinted TLB invalidation helper
arm64: Document SW reserved PTE/PMD bits in Stage-2 descriptors
arm64: Detect the ARMv8.4 TTL feature
Diffstat (limited to 'arch/arm64/Kconfig')
| -rw-r--r-- | arch/arm64/Kconfig | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 0cecb2b01476..73aee7290cdf 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -1601,6 +1601,20 @@ config ARM64_AMU_EXTN correctly reflect reality. Most commonly, the value read will be 0, indicating that the counter is not enabled. +config AS_HAS_ARMV8_4 + def_bool $(cc-option,-Wa$(comma)-march=armv8.4-a) + +config ARM64_TLB_RANGE + bool "Enable support for tlbi range feature" + default y + depends on AS_HAS_ARMV8_4 + help + ARMv8.4-TLBI provides TLBI invalidation instruction that apply to a + range of input addresses. + + The feature introduces new assembly instructions, and they were + support when binutils >= 2.30. + endmenu menu "ARMv8.5 architectural features" |