diff options
| author | Christoffer Dall | 2013-01-20 18:43:10 -0500 |
|---|---|---|
| committer | Christoffer Dall | 2013-01-23 13:29:09 -0500 |
| commit | 9e9a367c29cebd25a356d53414612e115efdadcf (patch) | |
| tree | cca8b98c33597179e5cbc50118b1cf86e6299ed0 /arch/arm/kernel | |
| parent | cc577c26e2e9740b046591a72e77213c556bff19 (diff) | |
ARM: Section based HYP idmap
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>
Diffstat (limited to 'arch/arm/kernel')
| -rw-r--r-- | arch/arm/kernel/vmlinux.lds.S | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S index 11c1785bf63e..b571484e9f03 100644 --- a/arch/arm/kernel/vmlinux.lds.S +++ b/arch/arm/kernel/vmlinux.lds.S @@ -19,7 +19,11 @@ ALIGN_FUNCTION(); \ VMLINUX_SYMBOL(__idmap_text_start) = .; \ *(.idmap.text) \ - VMLINUX_SYMBOL(__idmap_text_end) = .; + VMLINUX_SYMBOL(__idmap_text_end) = .; \ + ALIGN_FUNCTION(); \ + VMLINUX_SYMBOL(__hyp_idmap_text_start) = .; \ + *(.hyp.idmap.text) \ + VMLINUX_SYMBOL(__hyp_idmap_text_end) = .; #ifdef CONFIG_HOTPLUG_CPU #define ARM_CPU_DISCARD(x) |