diff options
| -rw-r--r-- | arch/arm/include/asm/idmap.h | 1 | ||||
| -rw-r--r-- | arch/arm/include/asm/kvm_mmu.h | 1 | ||||
| -rw-r--r-- | arch/arm/kvm/mmu.c | 24 | ||||
| -rw-r--r-- | arch/arm/mm/idmap.c | 32 |
4 files changed, 24 insertions, 34 deletions
diff --git a/arch/arm/include/asm/idmap.h b/arch/arm/include/asm/idmap.h index 1a66f907e5c..bf863edb517 100644 --- a/arch/arm/include/asm/idmap.h +++ b/arch/arm/include/asm/idmap.h @@ -8,7 +8,6 @@ #define __idmap __section(.idmap.text) noinline notrace extern pgd_t *idmap_pgd; -extern pgd_t *hyp_pgd; void setup_mm_for_reboot(void); diff --git a/arch/arm/include/asm/kvm_mmu.h b/arch/arm/include/asm/kvm_mmu.h index 970f3b5fa10..3c71a1d4b7a 100644 --- a/arch/arm/include/asm/kvm_mmu.h +++ b/arch/arm/include/asm/kvm_mmu.h @@ -21,7 +21,6 @@ #include <asm/cacheflush.h> #include <asm/pgalloc.h> -#include <asm/idmap.h> /* * We directly use the kernel VA for the HYP, as we can directly share diff --git a/arch/arm/kvm/mmu.c b/arch/arm/kvm/mmu.c index 96d61daa23b..bfc59279de1 100644 --- a/arch/arm/kvm/mmu.c +++ b/arch/arm/kvm/mmu.c @@ -32,6 +32,7 @@ extern char __hyp_idmap_text_start[], __hyp_idmap_text_end[]; +static pgd_t *hyp_pgd; static DEFINE_MUTEX(kvm_hyp_pgd_mutex); static void kvm_tlb_flush_vmid_ipa(struct kvm *kvm, phys_addr_t ipa) @@ -715,12 +716,33 @@ phys_addr_t kvm_mmu_get_httbr(void) int kvm_mmu_init(void) { + unsigned long hyp_idmap_start = virt_to_phys(__hyp_idmap_text_start); + unsigned long hyp_idmap_end = virt_to_phys(__hyp_idmap_text_end); + int err; + + hyp_pgd = kzalloc(PTRS_PER_PGD * sizeof(pgd_t), GFP_KERNEL); if (!hyp_pgd) { kvm_err("Hyp mode PGD not allocated\n"); - return -ENOMEM; + err = -ENOMEM; + goto out; + } + + /* Create the idmap in the boot page tables */ + err = __create_hyp_mappings(boot_hyp_pgd, + hyp_idmap_start, hyp_idmap_end, + __phys_to_pfn(hyp_idmap_start), + PAGE_HYP); + + if (err) { + kvm_err("Failed to idmap %lx-%lx\n", + hyp_idmap_start, hyp_idmap_end); + goto out; } return 0; +out: + kfree(hyp_pgd); + return err; } /** diff --git a/arch/arm/mm/idmap.c b/arch/arm/mm/idmap.c index 5ee505c937d..83cb3ac2709 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); |