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From: "H. Peter Anvin" <hpa@zytor.com>
To: Keith Packard <keithp@keithp.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
	Matt Fleming <matt@console-pimps.org>,
	linux-kernel@vger.kernel.org, Matthew Garrett <mjg@redhat.com>,
	Zhang Rui <rui.zhang@intel.com>,
	Huang Ying <huang.ying.caritas@gmail.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Ingo Molnar <mingo@elte.hu>
Subject: Re: [PATCH] Revert "x86, efi: Calling __pa() with an ioremap()ed address is invalid"
Date: Mon, 12 Dec 2011 09:29:06 -0800	[thread overview]
Message-ID: <4EE639E2.6060307@zytor.com> (raw)
In-Reply-To: <86mxaxiu34.fsf@sumi.keithp.com>

On 12/12/2011 09:21 AM, Keith Packard wrote:
> On Mon, 12 Dec 2011 08:50:52 -0800, Linus Torvalds
> <torvalds@linux-foundation.org> wrote:
> 
>> Ahh. And the reason it works for me is that I don't even have 
>> "CONFIG_EFI" enabled, much less EFI debugging. So I never trigger
>> the buggy code at all.
> 
> I foolishly assumed that an EFI machine required CONFIG_EFI...
> 

Machines with EFI only do.

Machines which support BIOS emulation don't (and are generally better
off booted in that mode...)

It depends mostly if you have and EFI or a BIOS bootloader.

	-hpa


-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.


  reply	other threads:[~2011-12-12 17:29 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-12-12  0:12 [PATCH] Revert "x86, efi: Calling __pa() with an ioremap()ed address is invalid" Keith Packard
2011-12-12  2:59 ` Linus Torvalds
2011-12-12  3:01   ` H. Peter Anvin
2011-12-12  3:11     ` Ingo Molnar
2011-12-12  3:31   ` Keith Packard
2011-12-12  3:32     ` H. Peter Anvin
2011-12-12  3:43       ` Keith Packard
2011-12-12 10:01         ` Matt Fleming
2011-12-12 16:35           ` Keith Packard
2011-12-12 16:50             ` Linus Torvalds
2011-12-12 17:09               ` H. Peter Anvin
2011-12-12 17:21               ` Keith Packard
2011-12-12 17:29                 ` H. Peter Anvin [this message]
2011-12-12 17:37                   ` Linus Torvalds
2011-12-15 15:29             ` Matt Fleming
2012-01-16  9:22               ` Matt Fleming
2012-01-16  9:31                 ` Ingo Molnar
2012-01-16  9:49                   ` Matt Fleming
2012-01-16  9:55                     ` Ingo Molnar
2012-01-16 10:16                       ` Matt Fleming
2012-01-16 14:54                         ` [tip:x86/efi] x86/efi: Delete efi_ioremap() and fix CONFIG_X86_32 oops tip-bot for Matt Fleming
2012-02-08 12:46                         ` [PATCH] Revert "x86, efi: Calling __pa() with an ioremap()ed address is invalid" Matt Fleming
2012-02-08 17:15                           ` Keith Packard
2012-02-15 12:13                             ` Matt Fleming
2012-02-17 11:21                               ` Ingo Molnar
2011-12-12 10:01   ` Matt Fleming
2011-12-12 17:09     ` H. Peter Anvin
2011-12-12 17:26       ` Ingo Molnar
2011-12-12  3:06 ` Ingo Molnar

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