From: Alistair Francis <alistair23@gmail.com>
To: Richard Henderson <richard.henderson@linaro.org>
Cc: Alistair Francis <alistair.francis@wdc.com>,
"qemu-devel@nongnu.org Developers" <qemu-devel@nongnu.org>
Subject: Re: [PATCH 0/9] cputlb: Various cleanups
Date: Tue, 21 Jan 2020 09:03:43 +1000 [thread overview]
Message-ID: <CAKmqyKPDWFu9orMOiRW=NS7qu74kU_dovRo1BzSyeb8o=77PiA@mail.gmail.com> (raw)
In-Reply-To: <20200109024907.2730-1-richard.henderson@linaro.org>
On Thu, Jan 9, 2020 at 12:49 PM Richard Henderson
<richard.henderson@linaro.org> 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
>
>
prev parent reply other threads:[~2020-01-20 23:06 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-09 2:48 [PATCH 0/9] cputlb: Various cleanups Richard Henderson
2020-01-09 2:48 ` [PATCH 1/9] cputlb: Merge tlb_table_flush_by_mmuidx into tlb_flush_one_mmuidx_locked Richard Henderson
2020-01-20 0:34 ` Alistair Francis
2020-01-20 13:34 ` Alex Bennée
2020-01-09 2:49 ` [PATCH 2/9] cputlb: Make tlb_n_entries private to cputlb.c Richard Henderson
2020-01-20 0:36 ` Alistair Francis
2020-01-20 8:53 ` Philippe Mathieu-Daudé
2020-01-20 13:34 ` Alex Bennée
2020-01-09 2:49 ` [PATCH 3/9] cputlb: Pass CPUTLBDescFast to tlb_n_entries and sizeof_tlb Richard Henderson
2020-01-20 0:37 ` Alistair Francis
2020-01-20 8:54 ` Philippe Mathieu-Daudé
2020-01-20 13:36 ` Alex Bennée
2020-01-20 13:39 ` Alex Bennée
2020-01-09 2:49 ` [PATCH 4/9] cputlb: Hoist tlb portions in tlb_mmu_resize_locked Richard Henderson
2020-01-20 8:58 ` Philippe Mathieu-Daudé
2020-01-20 12:05 ` Alistair Francis
2020-01-20 13:40 ` Alex Bennée
2020-01-09 2:49 ` [PATCH 5/9] cputlb: Hoist tlb portions in tlb_flush_one_mmuidx_locked Richard Henderson
2020-01-20 8:58 ` Philippe Mathieu-Daudé
2020-01-20 13:41 ` Alex Bennée
2020-01-20 22:56 ` Alistair Francis
2020-01-09 2:49 ` [PATCH 6/9] cputlb: Split out tlb_mmu_flush_locked Richard Henderson
2020-01-20 8:59 ` Philippe Mathieu-Daudé
2020-01-20 13:41 ` Alex Bennée
2020-01-20 22:58 ` Alistair Francis
2020-01-09 2:49 ` [PATCH 7/9] cputlb: Partially merge tlb_dyn_init into tlb_init Richard Henderson
2020-01-20 9:01 ` Philippe Mathieu-Daudé
2020-01-20 14:33 ` Alex Bennée
2020-01-20 23:00 ` Alistair Francis
2020-01-09 2:49 ` [PATCH 8/9] cputlb: Initialize tlbs as flushed Richard Henderson
2020-01-20 14:33 ` Alex Bennée
2020-01-20 23:01 ` Alistair Francis
2020-01-09 2:49 ` [PATCH 9/9] cputlb: Hoist timestamp outside of loops over tlbs Richard Henderson
2020-01-20 9:02 ` Philippe Mathieu-Daudé
2020-01-20 14:36 ` Alex Bennée
2020-01-20 23:02 ` Alistair Francis
2020-01-20 23:03 ` Alistair Francis [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='CAKmqyKPDWFu9orMOiRW=NS7qu74kU_dovRo1BzSyeb8o=77PiA@mail.gmail.com' \
--to=alistair23@gmail.com \
--cc=alistair.francis@wdc.com \
--cc=qemu-devel@nongnu.org \
--cc=richard.henderson@linaro.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).