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From: "Jonathan Barkelew" <debtech@gmail.com>
To: linux-kernel@vger.kernel.org
Subject: Re: [RFC PATCH] x86: make 64bit efi to use ioremap_cache for efi_ioremap
Date: Thu, 11 Dec 2008 15:41:08 -0500	[thread overview]
Message-ID: <88e91b480812111241s14332db2vbba68b0aeb73bb65@mail.gmail.com> (raw)

>> then how about use ioremap directly to replace fixed mapping in 64bit
>> with efi_ioremap?
>
> Because for kexec to work, EFI runtime memory area should be mapped to
> same virtual address across reboot.

Why would this require a separate function for 64-bit systems?
Wouldn't the 32-bit function have to take this into consideration as well?

Also, why is the fixed address space so limited? What about EFI runtime services
that are larger than 1MB?

Thanks,
Jonathan Barkelew

             reply	other threads:[~2008-12-11 20:41 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-12-11 20:41 Jonathan Barkelew [this message]
  -- strict thread matches above, loose matches on Subject: below --
2008-10-04  6:23 Yinghai Lu
2008-10-04  8:46 ` Ingo Molnar
2008-10-04  9:35 ` huang ying
2008-10-04 17:44   ` Yinghai Lu
2008-10-05  8:56     ` huang ying
2008-10-05 10:04       ` Ingo Molnar
2008-10-06  1:47         ` Huang Ying
2008-10-05 18:04       ` Yinghai Lu
2008-10-06  1:50         ` Huang Ying

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