| 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
| ||
|
Message-ID: <m1oc8vetru.fsf@fess.ebiederm.org> Date: Wed, 08 Dec 2010 15:20:37 -0800 From: ebiederm@...ssion.com (Eric W. Biederman) To: Don Zickus <dzickus@...hat.com> Cc: Peter Zijlstra <peterz@...radead.org>, Vivek Goyal <vgoyal@...hat.com>, Yinghai Lu <yinghai@...nel.org>, Ingo Molnar <mingo@...e.hu>, Jason Wessel <jason.wessel@...driver.com>, "linux-kernel\@vger.kernel.org" <linux-kernel@...r.kernel.org>, Haren Myneni <hbabu@...ibm.com> Subject: Re: perf hw in kexeced kernel broken in tip Don Zickus <dzickus@...hat.com> writes: > On Wed, Dec 08, 2010 at 03:59:16PM +0100, Peter Zijlstra wrote: >> On Wed, 2010-12-08 at 15:20 +0100, Peter Zijlstra wrote: >> >> > > I wonder if you should reverse these checks. If the bios has the perf >> > > counter enabled, there might be a high chance that it fails the first >> > > check and never gets to the actually bios checks. >> > >> > Ah, good point. >> >> Something like so.. > > This seems to work correctly on my Nehalem and broken bios machines during > boot and kexec. As expected it fails during kdump. My p4 box failed > during kexec for some reason. But p4 has other issues. Does the kdump kernel still boot? It looks like it should I just want to double check. Eric -- 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/
Powered by blists - more mailing lists