From: Andi Kleen <andi@firstfloor.org>
To: Ingo Molnar <mingo@elte.hu>
Cc: "Cihula, Joseph" <joseph.cihula@intel.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"arjan@linux.intel.com" <arjan@linux.intel.com>,
"hpa@zytor.com" <hpa@zytor.com>,
"andi@firstfloor.org" <andi@firstfloor.org>,
"chrisw@sous-sol.org" <chrisw@sous-sol.org>,
"jmorris@namei.org" <jmorris@namei.org>,
"jbeulich@novell.com" <jbeulich@novell.com>,
"peterm@redhat.com" <peterm@redhat.com>,
"Wei, Gang" <gang.wei@intel.com>,
"Wang, Shane" <shane.wang@intel.com>
Subject: Re: [RFC v3][PATCH 2/2] intel_txt: Intel(R) TXT and tboot kernel support
Date: Tue, 12 May 2009 11:55:28 +0200 [thread overview]
Message-ID: <20090512095528.GG19296@one.firstfloor.org> (raw)
In-Reply-To: <20090512094544.GE32292@elte.hu>
> > > > + ((void(*)(void))(long)tboot_shared->shutdown_entry)();
>
> be better? Or is shutdown_entry always mapped into [0..2GB) on
0..4GB and this code runs in a identity mapping.
> 64-bit? Even then, not sign-extending RIP addresses is wrong and
> invites bugs/restrictions.
You never have to sign extend when going from 32bit to 64bit
on x86-64.
-andi
--
ak@linux.intel.com -- Speaking for myself only.
next prev parent reply other threads:[~2009-05-12 9:50 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-08 4:49 [RFC v3][PATCH 2/2] intel_txt: Intel(R) TXT and tboot kernel support Joseph Cihula
2009-05-08 6:53 ` Andrew Morton
2009-05-29 1:02 ` Cihula, Joseph
2009-05-08 9:57 ` Ingo Molnar
2009-05-12 5:26 ` Cihula, Joseph
2009-05-12 9:45 ` Ingo Molnar
2009-05-12 9:55 ` Andi Kleen [this message]
2009-05-12 21:01 ` Theodore Tso
2009-05-14 15:52 ` Heinz Diehl
2009-05-15 0:17 ` James Morris
2009-05-15 1:45 ` Cihula, Joseph
2009-05-15 1:51 ` Joe Perches
2009-05-15 2:49 ` Cihula, Joseph
2009-05-28 1:12 ` James Morris
2009-05-15 12:07 ` Theodore Tso
2009-05-15 12:26 ` Theodore Tso
2009-05-24 19:42 ` Pavel Machek
2009-05-24 19:42 ` Pavel Machek
[not found] ` <E1M8kJQ-0000W3-TE@fencepost.gnu.org>
2009-05-26 2:31 ` Theodore Tso
[not found] ` <E1M9Mig-0003Q4-S1@fencepost.gnu.org>
2009-05-29 9:47 ` Pavel Machek
2009-05-19 20:30 ` Pavel Machek
2009-05-22 16:59 ` H. Peter Anvin
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