netdev - Re: [RFC PATCH 0/2] remove netpoll rx support

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]

Date:	Tue, 11 Mar 2014 12:49:07 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	ebiederm@...ssion.com
Cc:	eric.dumazet@...il.com, netdev@...r.kernel.org,
	xiyou.wangcong@...il.com, mpm@...enic.com, satyam.sharma@...il.com
Subject: Re: [RFC PATCH 0/2] remove netpoll rx support

From: ebiederm@...ssion.com (Eric W. Biederman)
Date: Tue, 11 Mar 2014 01:43:10 -0700

> Furthermore netpoll by it's design depends on the ability to receive
> packets in netpoll_poll_dev.  It is a capability I don't think we have
> ever used in the mainline kernel but it is a capability that is there
> deliberately.  Which means if we want netpoll to not mess with the rx
> path we need to change netpoll.

This breaks kdump, and any other users of netpoll_rx() et al.

Make the zero budget depend upon us being invoked from hardware
irq context, or something like that.

Thanks.
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html