arm64/mm: Stop using ESR_ELx_FSC_TYPE during fault

Fault status codes at page table level 0, 1, 2 and 3 for access, permission
and translation faults are architecturally organized in a way, that masking
out ESR_ELx_FSC_TYPE, fetches Level 0 status code for the respective fault.

Helpers like esr_fsc_is_[translation|permission|access_flag]_fault() mask
out ESR_ELx_FSC_TYPE before comparing against corresponding Level 0 status
code as the kernel does not yet care about the page table level, where in
the fault really occurred previously.

This scheme is starting to crumble after FEAT_LPA2 when level -1 got added.
Fault status code for translation fault at level -1 is 0x2B which does not
follow ESR_ELx_FSC_TYPE, requiring esr_fsc_is_translation_fault() changes.

This changes above helpers to compare against individual fault status code
values for each page table level and stop using ESR_ELx_FSC_TYPE, which is
losing its value as a common mask.

Cc: Will Deacon <[email protected]>
Cc: Marc Zyngier <[email protected]>
Cc: [email protected]
Cc: [email protected]
Signed-off-by: Anshuman Khandual <[email protected]>
Reviewed-by: Marc Zyngier <[email protected]>
Reviewed-by: Ryan Roberts <[email protected]>
Acked-by: Mark Rutland <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Catalin Marinas <[email protected]>

0 files changed, 0 insertions, 0 deletions