linux-kernel - RE: [PATCH][EFI] Run EFI in physical mode

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: <987664A83D2D224EAE907B061CE93D53015B2DAD87@orsmsx505.amr.corp.intel.com>
Date:	Fri, 13 Aug 2010 15:33:56 -0700
From:	"Luck, Tony" <tony.luck@...el.com>
To:	"H. Peter Anvin" <hpa@...or.com>,
	Takao Indoh <indou.takao@...fujitsu.com>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"kexec@...ts.infradead.org" <kexec@...ts.infradead.org>,
	"ebiederm@...ssion.com" <ebiederm@...ssion.com>,
	"tglx@...utronix.de" <tglx@...utronix.de>,
	"mingo@...hat.com" <mingo@...hat.com>,
	"vgoyal@...hat.com" <vgoyal@...hat.com>,
	"nhorman@...driver.com" <nhorman@...driver.com>
Subject: RE: [PATCH][EFI] Run EFI in physical mode

> does this affect ia64 in any way?

I remember Eric complaining that set_virtual_address_map() was a one
way trap door with no way to get back to physical mode ... and thus
this was a big problem to support kexec on ia64. And yet we still call
it, and ia64 can do kexec. So some other work around must have been
found. Can't immediately remember what it was though.

-Tony
--
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/