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generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2024-11-02 14:30:50 +0000
cture revisions, and make use of it when reading the number of wired entries. Since commit e710d6668309 ("MIPS: tlb-r4k: If there are wired entries, don't use TLBINVF") we have been using a non-zero number of wired entries to determine whether we should avoid use of the tlbinvf instruction (which would invalidate wired entries) and instead loop over TLB entries in local_flush_tlb_all(). This loop begins with the number of wired entries, or before this patch some large bogus TLB index on MIPSr6 systems. Thus since the aforementioned commit some MIPSr6 systems with FTLBs have been prone to leaving stale address translations in the FTLB & crashing in various weird & wonderful ways when we later observe the wrong memory. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Matt Redfearn <matt.redfearn@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/14557/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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