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[0/9] cputlb: Various cleanups

Message ID 20200109024907.2730-1-richard.henderson@linaro.org
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Series cputlb: Various cleanups | expand

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Richard Henderson Jan. 9, 2020, 2:48 a.m. UTC 
I had a conversation with Alistair Francis at KVM forum about
being able to represent ASIDs "properly".  This lead to the idea
that target-specific code might be able to cache TLBs outside of
the "main" NB_MMU_MODES -- possibly thousands of them.

This goes nowhere near that far.  But it does begin edging toward
the possibility of having a

    struct CPUTLBSaved {
        CPUTLBDesc d;
        CPUTLBDescFast f;
    };

by moving some of the most basic routines to use CPUTLBDesc and
CPUTLBDescFast directly instead of always using an mmu_idx.

I'm not sure how much time I'll have to go further along these
lines, but what I have so far still looks like a cleanup.


r~


Richard Henderson (9):
  cputlb: Merge tlb_table_flush_by_mmuidx into
    tlb_flush_one_mmuidx_locked
  cputlb: Make tlb_n_entries private to cputlb.c
  cputlb: Pass CPUTLBDescFast to tlb_n_entries and sizeof_tlb
  cputlb: Hoist tlb portions in tlb_mmu_resize_locked
  cputlb: Hoist tlb portions in tlb_flush_one_mmuidx_locked
  cputlb: Split out tlb_mmu_flush_locked
  cputlb: Partially merge tlb_dyn_init into tlb_init
  cputlb: Initialize tlbs as flushed
  cputlb: Hoist timestamp outside of loops over tlbs

 include/exec/cpu_ldst.h |   5 --
 accel/tcg/cputlb.c      | 120 +++++++++++++++++++++-------------------
 2 files changed, 64 insertions(+), 61 deletions(-)

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2.20.1