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From: "Cédric Le Goater" <clg@kaod.org>
To: Daniel Henrique Barboza <danielhb413@gmail.com>, <qemu-devel@nongnu.org>
Cc: richard.henderson@linaro.org, qemu-ppc@nongnu.org,
	david@gibson.dropbear.id.au
Subject: Re: [PATCH v9 00/10] PMU-EBB support for PPC64 TCG
Date: Wed, 15 Dec 2021 17:54:49 +0100	[thread overview]
Message-ID: <687eb5f0-3232-7c8f-e3c6-877bbb214656@kaod.org> (raw)
In-Reply-To: <20211201151734.654994-1-danielhb413@gmail.com>

On 12/1/21 16:17, Daniel Henrique Barboza wrote:
> Hi,
> 
> In this new version the most significant change is in patch 6,
> where a new hflag allows us to not call the instruction helper
> inside translate.c unless we're absolutely certain that there
> is an instruction count event being sampled and active in the
> PMU. This change turned out to be a big boost in performance
> in the PMU emulation overall, most notably when dealing with
> cycle events that were calling the helper needlessly.
> 
> This and all other changes were suggested by David in his review
> of the previous version.
> 
> 
> Changes from v8:
> - patch 5:
>    * overflow timer of PMC5 is now marked as NULL instead of absent
> - patch 6:
>    * new hflags HFLAGS_INSN_CNT added to track instruction count state
>    * previous HFLAGS_MMCR0FC flag removed
>    * pmu_count_insns() now works partially with user mode
> - patch 9:
>    * fixed interrupt comment
> - v8 link: https://lists.gnu.org/archive/html/qemu-devel/2021-11/msg05160.html
Applied patches 1-8 to ppc-next.


Thanks,

C.


      parent reply	other threads:[~2021-12-15 17:07 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-12-01 15:17 [PATCH v9 00/10] PMU-EBB support for PPC64 TCG Daniel Henrique Barboza
2021-12-01 15:17 ` [PATCH v9 01/10] target/ppc: introduce PMUEventType and PMU overflow timers Daniel Henrique Barboza
2021-12-01 15:17 ` [PATCH v9 02/10] target/ppc: PMU basic cycle count for pseries TCG Daniel Henrique Barboza
2021-12-01 15:17 ` [PATCH v9 03/10] target/ppc: PMU: update counters on PMCs r/w Daniel Henrique Barboza
2021-12-01 15:17 ` [PATCH v9 04/10] target/ppc: PMU: update counters on MMCR1 write Daniel Henrique Barboza
2021-12-01 15:17 ` [PATCH v9 05/10] target/ppc: enable PMU counter overflow with cycle events Daniel Henrique Barboza
2021-12-01 15:17 ` [PATCH v9 06/10] target/ppc: enable PMU instruction count Daniel Henrique Barboza
2021-12-02  2:42   ` David Gibson
2021-12-01 15:17 ` [PATCH v9 07/10] target/ppc/power8-pmu.c: add PM_RUN_INST_CMPL (0xFA) event Daniel Henrique Barboza
2021-12-01 15:17 ` [PATCH v9 08/10] PPC64/TCG: Implement 'rfebb' instruction Daniel Henrique Barboza
2021-12-01 15:17 ` [PATCH v9 09/10] target/ppc: PMU Event-Based exception support Daniel Henrique Barboza
2021-12-03  9:27   ` Cédric Le Goater
2021-12-09  1:51   ` David Gibson
2021-12-01 15:17 ` [PATCH v9 10/10] target/ppc/excp_helper.c: EBB handling adjustments Daniel Henrique Barboza
2021-12-09  1:52   ` David Gibson
2021-12-14 20:05     ` Daniel Henrique Barboza
2021-12-03  9:37 ` [PATCH v9 00/10] PMU-EBB support for PPC64 TCG Cédric Le Goater
2021-12-03 13:03   ` Fabiano Rosas
2021-12-15 16:54 ` Cédric Le Goater [this message]

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