arm64: Add ESR decoding for exceptions involving translation level -1

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The LPA2 feature introduces new FSC values to report abort exceptions
related to translation level -1. Define these and wire them up.

Reuse the new ESR FSC classification helpers that arrived via the KVM
arm64 tree, and update the one for translation faults to check
specifically for a translation fault at level -1. (Access flag or
permission faults cannot occur at level -1 because they alway involve a
descriptor at the superior level so changing those helpers is not
needed).

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20240214122845.2033971-73-ardb+git@google.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

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Ard Biesheuvel 2024-02-14 13:29:14 +01:00 • committed by Catalin Marinas

parent 60d043c101

commit 7ac8d5b242

3 changed files with 18 additions and 35 deletions

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13

arch/arm64/include/asm/esr.h

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10

arch/arm64/include/asm/kvm_emulate.h

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30

arch/arm64/mm/fault.c

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