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authorChristoffer Dall <c.dall@virtualopensystems.com>2013-01-20 18:43:10 -0500
committerChristoffer Dall <c.dall@virtualopensystems.com>2013-01-23 13:29:09 -0500
commit9e9a367c29cebd25a356d53414612e115efdadcf (patch)
treecca8b98c33597179e5cbc50118b1cf86e6299ed0 /arch/arm/kernel/vmlinux.lds.S
parentcc577c26e2e9740b046591a72e77213c556bff19 (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/vmlinux.lds.S')
-rw-r--r--arch/arm/kernel/vmlinux.lds.S6
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 @@
19 ALIGN_FUNCTION(); \ 19 ALIGN_FUNCTION(); \
20 VMLINUX_SYMBOL(__idmap_text_start) = .; \ 20 VMLINUX_SYMBOL(__idmap_text_start) = .; \
21 *(.idmap.text) \ 21 *(.idmap.text) \
22 VMLINUX_SYMBOL(__idmap_text_end) = .; 22 VMLINUX_SYMBOL(__idmap_text_end) = .; \
23 ALIGN_FUNCTION(); \
24 VMLINUX_SYMBOL(__hyp_idmap_text_start) = .; \
25 *(.hyp.idmap.text) \
26 VMLINUX_SYMBOL(__hyp_idmap_text_end) = .;
23 27
24#ifdef CONFIG_HOTPLUG_CPU 28#ifdef CONFIG_HOTPLUG_CPU
25#define ARM_CPU_DISCARD(x) 29#define ARM_CPU_DISCARD(x)