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From: James Bottomley <James.Bottomley@HansenPartnership.com>
To: Gabriel Paubert <paubert@iram.es>
Cc: Ingo Molnar <mingo@elte.hu>,
	James Bottomley <James.Bottomley@HansenPartnership.com>,
	linux-kernel@vger.kernel.org,
	Linus Torvalds <torvalds@transmeta.com>
Subject: Re: Boot failure in 2.5.31 BK with new TLS patch
Date: Sat, 17 Aug 2002 12:20:44 -0500	[thread overview]
Message-ID: <200208171720.g7HHKim03809@localhost.localdomain> (raw)
In-Reply-To: Message from Gabriel Paubert <paubert@iram.es>  of "Sat, 17 Aug 2002 19:09:26 +0200." <3D5E8346.5010101@iram.es>

paubert@iram.es said:
> Hey no, it's cpu_gdt_table that must be aligned. That one does not
> matter,  it's only used once for the lgdt instruction... 

Actually, the intel manual recommends (but doesn't require) a wierd alignment 
for the descriptors.  It recommends aligning them at an address which is 2 MOD 
4 to avoid possible alignment check faults in user mode.  Not that I think we 
can ever run into the problem, but we should probably obey the recommendation. 
 I'll fix this up as well.

James



  parent reply	other threads:[~2002-08-17 17:16 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-08-17  0:31 Boot failure in 2.5.31 BK with new TLS patch James Bottomley
2002-08-17  6:51 ` Ingo Molnar
2002-08-17 15:16   ` James Bottomley
2002-08-17 16:17     ` Ingo Molnar
2001-11-02  8:20       ` Pavel Machek
2002-08-17 17:09       ` Gabriel Paubert
2002-08-17 17:18         ` Ingo Molnar
2002-08-17 17:20         ` James Bottomley [this message]
2002-08-17 18:26           ` Gabriel Paubert
2002-08-17 18:36             ` Linus Torvalds
2002-08-17 18:42               ` Ingo Molnar
2002-08-17 18:50               ` Gabriel Paubert
2002-08-17 18:53               ` Ingo Molnar
2002-08-17 21:42                 ` Ingo Molnar
2002-08-18  3:29                 ` Linus Torvalds
2002-08-17 22:34               ` James Bottomley
2002-08-18  8:35                 ` Ingo Molnar

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