ARM: Section based HYP idmap

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Add a method (hyp_idmap_setup) to populate a hyp pgd with an
identity mapping of the code contained in the .hyp.idmap.text
section.

Offer a method to drop this identity mapping through
hyp_idmap_teardown.

Make all the above depend on CONFIG_ARM_VIRT_EXT and CONFIG_ARM_LPAE.

Reviewed-by: Will Deacon <will.deacon@arm.com>
Reviewed-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <c.dall@virtualopensystems.com>

...

This commit is contained in:

Christoffer Dall 2013-01-20 18:43:10 -05:00

parent cc577c26e2

commit 9e9a367c29

4 changed files with 51 additions and 12 deletions

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1

arch/arm/include/asm/idmap.h

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1

arch/arm/include/asm/pgtable-3level-hwdef.h

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6

arch/arm/kernel/vmlinux.lds.S

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55

arch/arm/mm/idmap.c

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