linux-kernel - Re: [patch] genapic: optimize & fix APIC mode setup

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20061113190857.GA29904@elte.hu>
Date:	Mon, 13 Nov 2006 20:08:57 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Andi Kleen <ak@...e.de>
Cc:	"Siddha, Suresh B" <suresh.b.siddha@...el.com>,
	Andrew Morton <akpm@...l.org>, linux-kernel@...r.kernel.org,
	ashok.raj@...el.com
Subject: Re: [patch] genapic: optimize & fix APIC mode setup


* Ingo Molnar <mingo@...e.hu> wrote:

> [...] If something is cheap then other costs added to (such as 
> cpu-mask scanning, and passing around the cpumask) definitely do 
> matter.

btw., i dont claim this is a big issue - we could solve this for the 
common case even in physical delivery mode by adding a 'single IPI 
delivery' callback to the genapic methods. That could be used by the 
reschedule IPI for example.

	Ingo
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/