From: Richard Henderson <rth@twiddle.net>
To: Artyom Tarasenko <atar4qemu@gmail.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>,
qemu-devel <qemu-devel@nongnu.org>,
Alexander Graf <agraf@suse.de>
Subject: Re: [Qemu-devel] [PATCH v3 0/3] Support more than 8 MMU modes, speedup PPC by 10%
Date: Mon, 15 Jun 2015 09:29:51 -0700 [thread overview]
Message-ID: <557EFD7F.8070804@twiddle.net> (raw)
In-Reply-To: <CACXAS8DEg9bAzD4h15f6MJeo=i8ZENdpBU_Sy_qmuCXR=q9qVg@mail.gmail.com>
On 06/15/2015 09:00 AM, Artyom Tarasenko wrote:
> On Mon, Jun 15, 2015 at 5:50 PM, Richard Henderson <rth@twiddle.net> wrote:
>> On 06/11/2015 01:59 AM, Artyom Tarasenko wrote:
>>>
>>> This is a very promising approach. Would it also work on a large
>>> numbers of MMU modes?
>>> Particulary I wonder if it would work for SPARC, where 32-bit
>>> processors have up to 65536 MMU contexts.
>>
>>
>> No, it wouldn't.
>>
>
> What would be a better approach there? Cache recently used contexts only?
On alpha and arm, we simply ignore Address Space Numbers, which is what I
assume this is for Sparc. I've tried several times to find an efficient way to
do this for Alpha with no success.
r~
prev parent reply other threads:[~2015-06-15 16:30 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-05 7:18 [Qemu-devel] [PATCH v3 0/3] Support more than 8 MMU modes, speedup PPC by 10% Paolo Bonzini
2015-05-05 7:18 ` [Qemu-devel] [PATCH v2 1/3] tcg: add TCG_TARGET_TLB_DISPLACEMENT_BITS Paolo Bonzini
2015-05-05 7:18 ` [Qemu-devel] [PATCH v2 2/3] softmmu: support up to 12 MMU modes Paolo Bonzini
2015-05-18 17:00 ` Alexander Graf
2015-05-05 7:18 ` [Qemu-devel] [PATCH v2 3/3] target-ppc: use separate indices for various translation modes Paolo Bonzini
2015-06-02 16:06 ` Alexander Graf
2015-05-05 15:49 ` [Qemu-devel] [PATCH v3 0/3] Support more than 8 MMU modes, speedup PPC by 10% Richard Henderson
2015-05-08 1:15 ` Alexander Graf
2015-05-07 22:26 ` Alexander Graf
2015-06-11 8:59 ` Artyom Tarasenko
2015-06-15 15:50 ` Richard Henderson
2015-06-15 16:00 ` Artyom Tarasenko
2015-06-15 16:29 ` Richard Henderson [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=557EFD7F.8070804@twiddle.net \
--to=rth@twiddle.net \
--cc=agraf@suse.de \
--cc=atar4qemu@gmail.com \
--cc=pbonzini@redhat.com \
--cc=qemu-devel@nongnu.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).