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Commit 53b87cf0 authored by Matt Fleming's avatar Matt Fleming
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x86, mm: Include the entire kernel memory map in trampoline_pgd


There are various pieces of code in arch/x86 that require a page table
with an identity mapping. Make trampoline_pgd a proper kernel page
table, it currently only includes the kernel text and module space
mapping.

One new feature of trampoline_pgd is that it now has mappings for the
physical I/O device addresses, which are inserted at ioremap()
time. Some broken implementations of EFI firmware require these
mappings to always be around.

Acked-by: default avatarJan Beulich <jbeulich@suse.com>
Signed-off-by: default avatarMatt Fleming <matt.fleming@intel.com>
parent e913ca7d
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