Messages in this thread | | | Date | Tue, 24 May 2011 20:44:57 -0400 (EDT) | From | Nicolas Pitre <> | Subject | Re: [PATCH v6 00/18] ARM: Add support for the Large Physical Address Extensions |
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On Tue, 24 May 2011, David Brown wrote:
> On Tue, May 24 2011, Catalin Marinas wrote: > > > This set of patches adds support for the Large Physical Extensions on > > the ARM architecture (available with the Cortex-A15 processor). LPAE > > comes with a 3-level page table format (compared to 2-level for the > > classic one), allowing up to 40-bit physical address space. > > Do you expect non LPAE targets to be able to boot with these changes > applied (and LPAE enabled)? I am able to build this tree for the > MSM8660 (with a minor patch below), but it fails to boot with LPAE > enabled. It seems to work fine with LPAE not enabled.
I wouldn't expect a LPAE kernel to boot on non LPAE capable hardware.
And I don't think we'll ever try to support both LPAE and non-LPAE modes in the same kernel binary either since this has implications all over the place in core kernel mm code.
Nicolas
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