arm64: mm: Implicitly invalidate user ASID based on TLBI operation

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When kpti is enabled, separate ASIDs are used for userspace and
kernelspace, requiring ASID-qualified TLB invalidation by virtual
address to invalidate both of them.

Push the logic for invalidating the two ASIDs down into the low-level
tlbi-op-specific functions and remove the burden from the caller to
handle the kpti-specific behaviour.

Co-developed-by: Will Deacon <will@kernel.org>
Signed-off-by: Will Deacon <will@kernel.org>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Signed-off-by: Ryan Roberts <ryan.roberts@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

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Ryan Roberts 2026-03-02 13:55:50 +00:00 • committed by Catalin Marinas

parent d2bf322695

commit edc55b7abb

1 changed files with 13 additions and 17 deletions

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arch/arm64/include/asm/tlbflush.h

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