| 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
| ||
|
Date: Fri, 29 Oct 2010 00:26:55 -0700 From: Yinghai Lu <yinghai@...nel.org> To: Suresh Siddha <suresh.b.siddha@...el.com> CC: Thomas Gleixner <tglx@...utronix.de>, "H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...e.hu>, Andrew Morton <akpm@...ux-foundation.org>, Len Brown <lenb@...nel.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org> Subject: Re: [PATCH -v3] x86: Disable x2apic if nox2apic is specified On 10/28/2010 10:53 PM, Suresh Siddha wrote: > On Tue, 2010-10-26 at 23:27 -0700, Yinghai Lu wrote: >> For >> 1. x2apic preenabled system >> 2. first kernel have x2apic enabled, and try to kexec second kernel with "nox2apic" >> >> Will put back cpu with apic id < 255 into xapic mode, instead of panic. >> >> -v2: use x2apic_disabled instead of nox2apic, Suggested by Thomas >> update x2apic_supported with x2apic_disabled, Suggested by Thomas >> >> -v3: add checking for boot cpu apic id > 255. in that case will just panic >> --- pointed out by Suresh. >> > > Can we please hold off in merging this patch for a bit? There are some > subtleties in going back to xapic when the platform/cpu's are in x2apic > mode. I will check and get back to you on this after KS. sure. take you time. Yinghai -- 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