From: Richard Henderson <rth@twiddle.net>
To: Thomas Huth <thuth@redhat.com>, Paolo Bonzini <pbonzini@redhat.com>
Cc: "Stefan Weil" <sw@weilnetz.de>,
"Peter Maydell" <peter.maydell@linaro.org>,
"Richard Henderson" <richard.henderson@linaro.org>,
"QEMU Developers" <qemu-devel@nongnu.org>,
"Philippe Mathieu-Daudé" <f4bug@amsat.org>
Subject: Re: [Qemu-devel] [PATCH] tcg/tci: do not use ldst label (never implemented)
Date: Fri, 22 Sep 2017 08:31:29 -0500 [thread overview]
Message-ID: <be48c711-10af-c4bc-f129-88a844f3ecc4@twiddle.net> (raw)
In-Reply-To: <125b2e2a-290e-568a-0e33-d40150220912@redhat.com>
On 09/21/2017 04:59 AM, Thomas Huth wrote:
> $ time ppc64-softmmu/qemu-system-ppc64 -nographic -vga none -prom-env
> 'use-nvramrc?=true' -prom-env 'nvramrc=power-off'
> [...]
> real 0m13.953s
> user 0m13.904s
> sys 0m0.046s
>
> That's impressive! Richard, may I ask what's the current state of this?
> Do you plan to merge this soon, or are there still issues (like the ones
> that Paolo mentioned)?
I had been assuming that it would go in via the normal ppc tree.
If I should just merge it with tcg-next, I can do so...
> However, I only see that speed-up with the normal x86 backend. I've also
> tried it with TCI, but I hardly saw any improvements there ... is there
> still something missing in the TCI backend that is required for the
> tcg_gen_lookup_and_goto_ptr feature?
Yes.
r~
next prev parent reply other threads:[~2017-09-22 13:31 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-11 2:28 [Qemu-devel] [PATCH] tcg/tci: do not use ldst label (never implemented) Philippe Mathieu-Daudé
2017-09-11 5:18 ` Stefan Weil
2017-09-11 18:01 ` Richard Henderson
2017-09-11 18:24 ` Peter Maydell
2017-09-11 19:39 ` Stefan Weil
2017-09-11 19:47 ` Philippe Mathieu-Daudé
2017-09-11 19:54 ` Stefan Weil
2017-09-11 20:26 ` Stefan Weil
2017-09-11 21:06 ` Philippe Mathieu-Daudé
2017-09-12 8:52 ` Stefan Weil
2017-09-12 9:20 ` Stefan Weil
2017-09-12 14:56 ` Thomas Huth
2017-09-12 15:13 ` Paolo Bonzini
2017-09-21 9:59 ` Thomas Huth
2017-09-22 13:31 ` Richard Henderson [this message]
2017-09-11 18:13 ` Philippe Mathieu-Daudé
2017-09-11 18:14 ` Peter Maydell
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