From: Peter Maydell <peter.maydell@linaro.org>
To: Leif Lindholm <leif@nuviainc.com>
Cc: Marcin Juszkiewicz <marcin.juszkiewicz@linaro.org>,
qemu-arm <qemu-arm@nongnu.org>,
QEMU Developers <qemu-devel@nongnu.org>
Subject: Re: [PATCH] arm: bump amount of PMU counters to pass SBSA ACS
Date: Wed, 3 Mar 2021 18:06:46 +0000 [thread overview]
Message-ID: <CAFEAcA-KFF_An50h8JKy68_Y3J4j=kQCOFyGoySKyh53E7KGYg@mail.gmail.com> (raw)
In-Reply-To: <20210303174849.GF1664@vanye>
On Wed, 3 Mar 2021 at 17:48, Leif Lindholm <leif@nuviainc.com> wrote:
> It would be good if we could get 6.0 closer to SBSA compliance.
How far away are we at the moment ?
> Would it be worth the effort to make this controllable per cpu model?
I don't have a strong opinion on whether we should, but if we do then the
right way to implement that would be to have the PMCR reset value
as a reset_pmcr_el0 field in struct ARMCPU (like the existing reset_fpsid,
reset_sctlr, etc) that gets set per-CPU to whatever the CPU's value for
it is; and then instead of using a PMCR_NUM_COUNTERS value,
extract the PMCR.N field when needed. The hardest part would be
going through all the CPU TRMs to find out the correct reset value.
thanks
-- PMM
next prev parent reply other threads:[~2021-03-03 18:08 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-03 15:16 [PATCH] arm: bump amount of PMU counters to pass SBSA ACS Marcin Juszkiewicz
2021-03-03 17:48 ` Leif Lindholm
2021-03-03 18:06 ` Peter Maydell [this message]
2021-03-03 20:33 ` Marcin Juszkiewicz
2021-03-04 13:53 ` Leif Lindholm
2021-03-04 15:14 ` Peter Maydell
2021-03-04 15:25 ` Leif Lindholm
2021-03-11 17:02 ` Peter Maydell
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='CAFEAcA-KFF_An50h8JKy68_Y3J4j=kQCOFyGoySKyh53E7KGYg@mail.gmail.com' \
--to=peter.maydell@linaro.org \
--cc=leif@nuviainc.com \
--cc=marcin.juszkiewicz@linaro.org \
--cc=qemu-arm@nongnu.org \
--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).