[haiku-bugs] Re: [Haiku] #11896: ARM loader: arch_mmu positioning dynamic va start incorrectly.
- From: "pulkomandy" <trac@xxxxxxxxxxxx>
- Date: Thu, 12 Mar 2015 13:11:45 -0000
#11896: ARM loader: arch_mmu positioning dynamic va start incorrectly.
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Reporter: kallisti5 | Owner: pdziepak
Type: bug | Status: new
Priority: normal | Milestone: Unscheduled
Component: System/Boot | Version: R1/Development
Loader | Keywords: ARM MMU pfoetchen mmu_man rpi2
Resolution: | Blocking:
Blocked By: | Platform: arm
Has a Patch: 1 |
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Comment (by pulkomandy):
This address is the start of the dynamically allocated RAM. We are
apparently trying to identity-map it (va==pa) but we also want it to be in
kernel space (>= KERNEL_LOAD_BASE). This isn't possible with the Pi memory
map.
So, KERNEL_LOAD_BASE + kMaxKernelSize would make sense. It makes sure we
don't erase the kernel with allocated memory, and moves the virtual
addresses to kernel-side address space.
--
Ticket URL: <https://dev.haiku-os.org/ticket/11896#comment:13>
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