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<blockquote style="position: relative; padding-left: 55px;"><section><a href="https://mastodon.social/users/cks/statuses/113108440360297181">Chris Siebenmann (cks@mastodon.social)'s status on Tuesday, 10-Sep-2024 05:54:58 JST</a><a href="https://mastodon.social/@cks" title="cks@mastodon.social"><img src="https://gnusocial.jp/avatar/97051-48-20230210172853.webp" width="48" height="48" alt="Chris Siebenmann" style="position: absolute; left: 0; top: 0;">Chris Siebenmann</a><div><a href="https://infosec.exchange/@0x0ddc0ffee/113106432459547616" rel="in-reply-to">in reply to</a><ul><li></ul></div></section><article><p><a href="https://infosec.exchange/@0x0ddc0ffee">@0x0ddc0ffee</a> <a href="https://oldbytes.space/@drscriptt">@drscriptt</a> Per <a href="https://tacobelllabs.net/@arrjay/113105614521811597" rel="nofollow noreferrer">https://tacobelllabs.net/@arrjay/113105614521811597</a> desktops handle this in the PCH. I suspect the core handling is there even on servers with a BMC and the BMC talks to the PCH over the 1x PCI lane shown in the diagram. I think BMC management via shared NICs is lower level (and weirder) than the PCH, but really you want dedicated and thus separately powered management NICs.</p><p>(Powering the BMC portion of the board must also be fun times. Hopefully it's very low power.)</p></article><footer><a rel="bookmark" href="https://gnusocial.jp/conversation/3640616#notice-7135387">In conversation</a><time datetime="2024-09-10T05:54:58+09:00" title="Tuesday, 10-Sep-2024 05:54:58 JST">about 3 months ago</time> <span>from <span><a href="https://mastodon.social/@cks/113108440360297181" rel="external" title="Sent from mastodon.social via ActivityPub">mastodon.social</a></span></span><a href="https://mastodon.social/@cks/113108440360297181">permalink</a><h4>Attachments</h4><ol><li><article><header><div>No result found on File_thumbnail lookup.</div><h5><a href="https://tacobelllabs.net/@arrjay/113105614521811597">rj (@arrjay@tacobelllabs.net)</a></h5><div> from <span>rj</span></div></header><div>@cks@mastodon.social the southbridge/ich/pch handled this for a long time - see https://www.intel.com/content/dam/doc/datasheet/io-controller-hub-10-family-datasheet.pdf pg 142I’d imagine this is the sort of thing that still logically goes there, but it may also be shuttled over to whatever’s running AMT/vPro or another BMC type thing.</div><footer></footer></article></li></ol></footer></blockquote>

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Chris Siebenmann (cks@mastodon.social)'s status on Tuesday, 10-Sep-2024 05:54:58 JSTChris Siebenmann
in reply to
- Field Replaceable Unit
@0x0ddc0ffee @drscriptt Per https://tacobelllabs.net/@arrjay/113105614521811597 desktops handle this in the PCH. I suspect the core handling is there even on servers with a BMC and the BMC talks to the PCH over the 1x PCI lane shown in the diagram. I think BMC management via shared NICs is lower level (and weirder) than the PCH, but really you want dedicated and thus separately powered management NICs.
(Powering the BMC portion of the board must also be fun times. Hopefully it's very low power.)
In conversationabout 3 months ago from mastodon.socialpermalink
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  rj (@arrjay@tacobelllabs.net)
  from rj
  @cks@mastodon.social the southbridge/ich/pch handled this for a long time - see https://www.intel.com/content/dam/doc/datasheet/io-controller-hub-10-family-datasheet.pdf pg 142 I’d imagine this is the sort of thing that still logically goes there, but it may also be shuttled over to whatever’s running AMT/vPro or another BMC type thing.

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