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Re: [PATCH 0/9] cputlb: Various cleanups
From: |
Alistair Francis |
Subject: |
Re: [PATCH 0/9] cputlb: Various cleanups |
Date: |
Tue, 21 Jan 2020 09:03:43 +1000 |
On Thu, Jan 9, 2020 at 12:49 PM Richard Henderson
<address@hidden> wrote:
>
> 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.
Thanks for helping with this!
Unfortunately I haven't had a chance to dig into this myself.
Alistair
>
>
> 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(-)
>
> --
> 2.20.1
>
>
- Re: [PATCH 6/9] cputlb: Split out tlb_mmu_flush_locked, (continued)