From: Ingo Molnar <mingo@elte.hu>
To: "Siddha, Suresh B" <suresh.b.siddha@intel.com>
Cc: Andi Kleen <ak@suse.de>, Andrew Morton <akpm@osdl.org>,
linux-kernel@vger.kernel.org, ashok.raj@intel.com
Subject: Re: [patch] genapic: optimize & fix APIC mode setup
Date: Mon, 13 Nov 2006 09:43:16 +0100 [thread overview]
Message-ID: <20061113084315.GB25604@elte.hu> (raw)
In-Reply-To: <20061112175050.A17720@unix-os.sc.intel.com>
* Siddha, Suresh B <suresh.b.siddha@intel.com> wrote:
> There is an issue of using clustered mode along with cpu hotplug. More
> details are at the below link.
>
> http://marc.theaimsgroup.com/?l=linux-kernel&m=113261865814107&w=2
ok, to make sure i understand this right: it is not safe to switch any
local APIC in the system into clustered APIC mode on the E850x chipset
/at all/, because if one of the CPUs gets an INIT/startup IPI message
its local APIC will default to logical flat mode and might confuse the
chipset?
on large systems that have their APIC IDs set up to group CPUs amongst
different clusters and hence triggered cluster mode, the chipset does
not get confused by this, correct?
Ingo
next prev parent reply other threads:[~2006-11-13 8:44 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-11-11 15:14 Ingo Molnar
2006-11-11 15:20 ` Andi Kleen
2006-11-11 15:27 ` Ingo Molnar
2006-11-11 15:39 ` Ingo Molnar
2006-11-13 1:50 ` Siddha, Suresh B
2006-11-13 2:32 ` Andi Kleen
2006-11-13 8:16 ` Ingo Molnar
2006-11-13 9:08 ` Andi Kleen
2006-11-13 14:05 ` Ingo Molnar
2006-11-13 14:29 ` Andi Kleen
2006-11-13 15:04 ` Ingo Molnar
2006-11-13 16:10 ` Andi Kleen
2006-11-13 16:32 ` Ingo Molnar
2006-11-13 18:03 ` Siddha, Suresh B
2006-11-13 18:42 ` Ingo Molnar
2006-11-13 18:30 ` Siddha, Suresh B
2006-11-13 19:04 ` Ingo Molnar
2006-11-13 18:58 ` Siddha, Suresh B
2006-11-13 19:31 ` Ashok Raj
2006-11-13 19:08 ` Ingo Molnar
2006-11-13 14:14 ` Ingo Molnar
2006-11-13 8:43 ` Ingo Molnar [this message]
2006-11-13 17:34 ` Siddha, Suresh B
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=20061113084315.GB25604@elte.hu \
--to=mingo@elte.hu \
--cc=ak@suse.de \
--cc=akpm@osdl.org \
--cc=ashok.raj@intel.com \
--cc=linux-kernel@vger.kernel.org \
--cc=suresh.b.siddha@intel.com \
/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
all inboxes | Powered by JetHome®