From: Peter Maydell <peter.maydell@linaro.org>
To: Yeongkyoon Lee <yeongkyoon.lee@samsung.com>
Cc: laurent.desnogues@gmail.com, e.voevodin@samsung.com,
qemu-devel@nongnu.org, chenwj@iis.sinica.edu.tw
Subject: Re: [Qemu-devel] [RFC][PATCH v2 4/4] configure: add CONFIG_QEMU_LDST_OPTIMIZATION for TCG qemu_ld/st optimization
Date: Thu, 5 Jul 2012 15:06:18 +0100 [thread overview]
Message-ID: <CAFEAcA9rwUXmt2b9DaVpm70zHWHeaGsGCyr3R96RMrj60CdDmg@mail.gmail.com> (raw)
In-Reply-To: <1341494619-4714-5-git-send-email-yeongkyoon.lee@samsung.com>
On 5 July 2012 14:23, Yeongkyoon Lee <yeongkyoon.lee@samsung.com> wrote:
> Add an option "--enable-ldst-optimization" to enable CONFIG_QEMU_LDST_OPTIMIZATION macro for TCG qemu_ld/st optimization. It only works with CONFIG_SOFTMMU and doesn't work with CONFIG_TCG_PASS_AREG0.
This shouldn't be a user settable config option -- we should
just identify what the optimal setting is for the guest/target
combination and use it.
> case "$target_arch2" in
> alpha | sparc* | xtensa* | ppc*)
> echo "CONFIG_TCG_PASS_AREG0=y" >> $config_target_mak
> + # qemu_ld/st optimization is not available with CONFIG_TCG_PASS_AREG0
> + target_ldst_optimization="no"
PASS_AREG0 is the way of the future -- you need to fix the ldst
optimization to work with it.
-- PMM
next prev parent reply other threads:[~2012-07-05 14:06 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-05 13:23 [Qemu-devel] [RFC][PATCH v2 0/4] tcg: enhance code generation quality for qemu_ld/st IRs Yeongkyoon Lee
2012-07-05 13:23 ` [Qemu-devel] [RFC][PATCH v2 1/4] tcg: add declarations and templates of extended MMU helpers Yeongkyoon Lee
2012-07-05 13:40 ` Peter Maydell
2012-07-06 10:30 ` Yeongkyoon Lee
2012-07-06 10:35 ` 陳韋任 (Wei-Ren Chen)
2012-07-05 13:23 ` [Qemu-devel] [RFC][PATCH v2 2/4] tcg: add extended MMU helpers to softmmu targets Yeongkyoon Lee
2012-07-05 13:43 ` Peter Maydell
2012-07-05 18:49 ` Blue Swirl
2012-07-06 12:16 ` Yeongkyoon Lee
2012-07-05 13:23 ` [Qemu-devel] [RFC][PATCH v2 3/4] tcg: add optimized TCG qemu_ld/st generation Yeongkyoon Lee
2012-07-05 14:04 ` Peter Maydell
2012-07-06 11:20 ` Yeongkyoon Lee
2012-07-06 11:28 ` Peter Maydell
2012-07-05 13:23 ` [Qemu-devel] [RFC][PATCH v2 4/4] configure: add CONFIG_QEMU_LDST_OPTIMIZATION for TCG qemu_ld/st optimization Yeongkyoon Lee
2012-07-05 13:55 ` Andreas Färber
2012-07-06 3:13 ` Evgeny Voevodin
2012-07-05 14:06 ` Peter Maydell [this message]
2012-07-05 14:26 ` Laurent Desnogues
2012-07-06 11:43 ` Yeongkyoon Lee
2012-07-07 7:51 ` Blue Swirl
2012-07-08 8:35 ` Yeongkyoon Lee
2012-07-10 9:12 ` [Qemu-devel] [RFC][PATCH v2 0/4] tcg: enhance code generation quality for qemu_ld/st IRs Yeongkyoon Lee
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