LinuxPPC-Dev Archive on lore.kernel.org
 help / color / mirror / Atom feed
From: Bui Nguyen Nhu Quynh <kaylovefoss@gmail.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: mpe@ellerman.id.au
Subject: [QUESTION] Does PowerVM populate the rtas-sensors device-tree property?
Date: Sun,  1 Nov 2026 21:47:00 +0700	[thread overview]
Message-ID: <20261101144716.119289-1-kaylovefoss@gmail.com> (raw)

Hi,

I am trying to determine whether PowerVM firmware populates the rtas-sensors device-tree property on the /rtas node. The kernel's ppc_rtas_sensors_show() in arch/powerpc/kernel/rtas-proc.c reads it, but I have found no producer in QEMU, SLOF, or the kernel documentation.

On any PowerVM system, the answer is one command:

    ls -l /proc/device-tree/rtas/rtas-sensors
    od -An -tx1 /proc/device-tree/rtas/rtas-sensors

If the file exists, could you report the byte output? If it does not exist, that also answers the question.

I have a QEMU patch and a local reproducer if useful, but the firmware-side answer is the only thing I cannot determine locally.

Thanks.


                 reply	other threads:[~2026-11-01 14:47 UTC|newest]

Thread overview: [no followups] expand[flat|nested]  mbox.gz  Atom feed

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=20261101144716.119289-1-kaylovefoss@gmail.com \
    --to=kaylovefoss@gmail.com \
    --cc=linuxppc-dev@lists.ozlabs.org \
    --cc=mpe@ellerman.id.au \
    /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