From: Tom Musta <tommusta@gmail.com>
To: Paolo Bonzini <pbonzini@redhat.com>, qemu-devel@nongnu.org
Cc: dgibson@redhat.com, qemu-ppc@nongnu.org
Subject: Re: [Qemu-devel] [RFT/RFH PATCH 00/16] PPC speedup patches for TCG
Date: Thu, 28 Aug 2014 13:05:13 -0500 [thread overview]
Message-ID: <53FF6F59.5090003@gmail.com> (raw)
In-Reply-To: <1409246113-6519-1-git-send-email-pbonzini@redhat.com>
On 8/28/2014 12:14 PM, Paolo Bonzini wrote:
> Hi everyone,
>
> these patches provide a speedup around 20% when running PPC softmmu
> emulation on x86 machines (10% for user-mode emulation). There are
> actually two separate speedups here:
>
> * avoiding TLB flushing on every kernel<->user transition (patches 1-2)
>
> * rewriting CR handling to use 32 1-bit registers instead of 8
> 4-bit registers (patches 3-16)
>
> They must not be too shoddy; they boot a Linux guest fine. :) And the
> speedup is very interesting of course. The three problems with it are:
>
> * I don't have a good testsuite. So floating-point, decimal and SPE
> are mostly untested
>
> * I don't have much time to work on them (they are about a year old and
> I have just rebased them).
>
> * Patch 15 is a monster and hard to review, but I have no idea how to
> split it.
>
> Please take a look and if you are interested help in any way you can. :)
Paolo: I will carve out some time to help with both testing and review.
>
[ ... ]
prev parent reply other threads:[~2014-08-28 18:05 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-28 17:14 [Qemu-devel] [RFT/RFH PATCH 00/16] PPC speedup patches for TCG Paolo Bonzini
2014-08-28 17:14 ` [Qemu-devel] [PATCH 01/17] ppc: do not look at the MMU index Paolo Bonzini
2014-08-28 17:14 ` [Qemu-devel] [PATCH 02/17] ppc: avoid excessive TLB flushing Paolo Bonzini
2014-08-28 17:30 ` Peter Maydell
2014-08-28 19:35 ` Paolo Bonzini
2014-09-05 6:00 ` David Gibson
2014-09-05 7:10 ` [Qemu-devel] [Qemu-ppc] " Alexander Graf
2014-09-05 12:11 ` Paolo Bonzini
2014-09-09 16:42 ` Paolo Bonzini
2014-09-09 20:51 ` Alexander Graf
2014-08-28 17:14 ` [Qemu-devel] [PATCH 03/17] ppc: fix monitor access to CR Paolo Bonzini
2014-09-03 18:21 ` Tom Musta
2014-09-05 7:10 ` [Qemu-devel] [Qemu-ppc] " Alexander Graf
2014-08-28 17:15 ` [Qemu-devel] [PATCH 04/17] ppc: use ARRAY_SIZE in gdbstub.c Paolo Bonzini
2014-09-03 18:21 ` Tom Musta
2014-08-28 17:15 ` [Qemu-devel] [PATCH 05/17] ppc: use CRF_* in fpu_helper.c Paolo Bonzini
2014-09-03 18:21 ` Tom Musta
2014-08-28 17:15 ` [Qemu-devel] [PATCH 06/17] ppc: use CRF_* in int_helper.c Paolo Bonzini
2014-09-03 18:28 ` Tom Musta
2014-09-05 7:12 ` [Qemu-devel] [Qemu-ppc] " Alexander Graf
2014-08-28 17:15 ` [Qemu-devel] [PATCH 07/17] ppc: fix result of DLMZB when no zero bytes are found Paolo Bonzini
2014-09-03 18:28 ` Tom Musta
2014-09-05 7:26 ` [Qemu-devel] [Qemu-ppc] " Alexander Graf
2014-08-28 17:15 ` [Qemu-devel] [PATCH 08/17] ppc: introduce helpers for mfocrf/mtocrf Paolo Bonzini
2014-09-03 18:28 ` Tom Musta
2014-08-28 17:15 ` [Qemu-devel] [PATCH 09/17] ppc: reorganize gen_compute_fprf Paolo Bonzini
2014-09-03 18:29 ` Tom Musta
2014-08-28 17:15 ` [Qemu-devel] [PATCH 10/17] ppc: introduce gen_op_mfcr/gen_op_mtcr Paolo Bonzini
2014-09-03 18:58 ` Tom Musta
2014-08-28 17:15 ` [Qemu-devel] [PATCH 11/17] ppc: rename gen_set_cr6_from_fpscr Paolo Bonzini
2014-09-03 19:41 ` Tom Musta
2014-09-05 7:27 ` [Qemu-devel] [Qemu-ppc] " Alexander Graf
2014-08-28 17:15 ` [Qemu-devel] [PATCH 12/17] ppc: use movcond for isel Paolo Bonzini
2014-08-29 18:30 ` Richard Henderson
2014-09-03 19:41 ` Tom Musta
2014-09-15 13:39 ` Paolo Bonzini
2014-08-28 17:15 ` [Qemu-devel] [PATCH 13/17] ppc: compute mask from BI using right shift Paolo Bonzini
2014-09-03 20:59 ` Tom Musta
2014-09-05 7:29 ` [Qemu-devel] [Qemu-ppc] " Alexander Graf
2014-08-28 17:15 ` [Qemu-devel] [PATCH 14/17] ppc: introduce ppc_get_crf and ppc_set_crf Paolo Bonzini
2014-09-04 18:26 ` Tom Musta
2014-08-28 17:15 ` [Qemu-devel] [PATCH 15/17] ppc: store CR registers in 32 1-bit registers Paolo Bonzini
2014-09-04 18:27 ` Tom Musta
2014-09-09 15:44 ` Paolo Bonzini
2014-09-09 16:41 ` Paolo Bonzini
2014-09-09 16:03 ` Richard Henderson
2014-09-09 16:26 ` Paolo Bonzini
2014-08-28 17:15 ` [Qemu-devel] [PATCH 16/17] ppc: inline ppc_get_crf/ppc_set_crf when clearer Paolo Bonzini
2014-08-28 17:15 ` [Qemu-devel] [PATCH 17/17] ppc: dump all 32 CR bits Paolo Bonzini
2014-08-28 18:05 ` Tom Musta [this message]
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