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authorMarc Zyngier <marc.zyngier@arm.com>2013-04-12 19:12:03 +0100
committerChristoffer Dall <cdall@cs.columbia.edu>2013-04-28 22:23:08 -0700
commit2fb410596ca917fe6419be61ee5bc1782b17d947 (patch)
tree9b17527736eb0d7936c9d720721d946768ab5361 /arch/arm/mm/idmap.c
parent3562c76dcb9ce84853c835eec12a911bf3a8e2da (diff)
downloadop-kernel-dev-2fb410596ca917fe6419be61ee5bc1782b17d947.zip
op-kernel-dev-2fb410596ca917fe6419be61ee5bc1782b17d947.tar.gz
ARM: KVM: move to a KVM provided HYP idmap
After the HYP page table rework, it is pretty easy to let the KVM code provide its own idmap, rather than expecting the kernel to provide it. It takes actually less code to do so. Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Christoffer Dall <cdall@cs.columbia.edu>
Diffstat (limited to 'arch/arm/mm/idmap.c')
-rw-r--r--arch/arm/mm/idmap.c32
1 files changed, 1 insertions, 31 deletions
diff --git a/arch/arm/mm/idmap.c b/arch/arm/mm/idmap.c
index 5ee505c..83cb3ac 100644
--- a/arch/arm/mm/idmap.c
+++ b/arch/arm/mm/idmap.c
@@ -8,7 +8,6 @@
#include <asm/pgtable.h>
#include <asm/sections.h>
#include <asm/system_info.h>
-#include <asm/virt.h>
pgd_t *idmap_pgd;
@@ -83,37 +82,10 @@ static void identity_mapping_add(pgd_t *pgd, const char *text_start,
} while (pgd++, addr = next, addr != end);
}
-#if defined(CONFIG_ARM_VIRT_EXT) && defined(CONFIG_ARM_LPAE)
-pgd_t *hyp_pgd;
-
-extern char __hyp_idmap_text_start[], __hyp_idmap_text_end[];
-
-static int __init init_static_idmap_hyp(void)
-{
- hyp_pgd = kzalloc(PTRS_PER_PGD * sizeof(pgd_t), GFP_KERNEL);
- if (!hyp_pgd)
- return -ENOMEM;
-
- pr_info("Setting up static HYP identity map for 0x%p - 0x%p\n",
- __hyp_idmap_text_start, __hyp_idmap_text_end);
- identity_mapping_add(hyp_pgd, __hyp_idmap_text_start,
- __hyp_idmap_text_end, PMD_SECT_AP1);
-
- return 0;
-}
-#else
-static int __init init_static_idmap_hyp(void)
-{
- return 0;
-}
-#endif
-
extern char __idmap_text_start[], __idmap_text_end[];
static int __init init_static_idmap(void)
{
- int ret;
-
idmap_pgd = pgd_alloc(&init_mm);
if (!idmap_pgd)
return -ENOMEM;
@@ -123,12 +95,10 @@ static int __init init_static_idmap(void)
identity_mapping_add(idmap_pgd, __idmap_text_start,
__idmap_text_end, 0);
- ret = init_static_idmap_hyp();
-
/* Flush L1 for the hardware to see this page table content */
flush_cache_louis();
- return ret;
+ return 0;
}
early_initcall(init_static_idmap);
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