arm/arm64: KVM: Kill free_boot_hyp_pgd

There is no way to free the boot PGD, because it doesn't exist
anymore as a standalone entity.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>

4 files changed, 7 insertions, 29 deletions

diff --git a/arch/arm/include/asm/kvm_mmu.h b/arch/arm/include/asm/kvm_mmu.h
index 5d161d13b471..d5fd9fb8550b 100644
--- a/arch/arm/include/asm/kvm_mmu.h
+++ b/arch/arm/include/asm/kvm_mmu.h
@@ -51,7 +51,6 @@
 
 int create_hyp_mappings(void *from, void *to, pgprot_t prot);
 int create_hyp_io_mappings(void *from, void *to, phys_addr_t);
-void free_boot_hyp_pgd(void);
 void free_hyp_pgds(void);
 
 void stage2_unmap_vm(struct kvm *kvm);
diff --git a/arch/arm/kvm/arm.c b/arch/arm/kvm/arm.c
index 0887cc12b401..9b8c53798f50 100644
--- a/arch/arm/kvm/arm.c
+++ b/arch/arm/kvm/arm.c
@@ -1323,10 +1323,6 @@ static int init_hyp_mode(void)
                 }
         }
 
-#ifndef CONFIG_HOTPLUG_CPU
-        free_boot_hyp_pgd();
-#endif
-
         /* set size of VMID supported by CPU */
         kvm_vmid_bits = kvm_get_vmid_bits();
         kvm_info("%d-bit VMID\n", kvm_vmid_bits);
diff --git a/arch/arm/kvm/mmu.c b/arch/arm/kvm/mmu.c
index dd4ccc7f7baf..0b36dd52af62 100644
--- a/arch/arm/kvm/mmu.c
+++ b/arch/arm/kvm/mmu.c
@@ -482,27 +482,6 @@ static void unmap_hyp_range(pgd_t *pgdp, phys_addr_t start, u64 size)
 }
 
 /**
- * free_boot_hyp_pgd - free HYP boot page tables
- *
- * Free the HYP boot page tables. The bounce page is also freed.
- */
-void free_boot_hyp_pgd(void)
-{
-        mutex_lock(&kvm_hyp_pgd_mutex);
-
-        if (boot_hyp_pgd) {
-                unmap_hyp_range(boot_hyp_pgd, hyp_idmap_start, PAGE_SIZE);
-                free_pages((unsigned long)boot_hyp_pgd, hyp_pgd_order);
-                boot_hyp_pgd = NULL;
-        }
-
-        if (hyp_pgd)
-                unmap_hyp_range(hyp_pgd, hyp_idmap_start, PAGE_SIZE);
-
-        mutex_unlock(&kvm_hyp_pgd_mutex);
-}
-
-/**
  * free_hyp_pgds - free Hyp-mode page tables
  *
  * Assumes hyp_pgd is a page table used strictly in Hyp-mode and
@@ -516,11 +495,16 @@ void free_hyp_pgds(void)
 {
         unsigned long addr;
 
-        free_boot_hyp_pgd();
-
         mutex_lock(&kvm_hyp_pgd_mutex);
 
+        if (boot_hyp_pgd) {
+                unmap_hyp_range(boot_hyp_pgd, hyp_idmap_start, PAGE_SIZE);
+                free_pages((unsigned long)boot_hyp_pgd, hyp_pgd_order);
+                boot_hyp_pgd = NULL;
+        }
+
         if (hyp_pgd) {
+                unmap_hyp_range(hyp_pgd, hyp_idmap_start, PAGE_SIZE);
                 for (addr = PAGE_OFFSET; virt_addr_valid(addr); addr += PGDIR_SIZE)
                         unmap_hyp_range(hyp_pgd, KERN_TO_HYP(addr), PGDIR_SIZE);
                 for (addr = VMALLOC_START; is_vmalloc_addr((void*)addr); addr += PGDIR_SIZE)
diff --git a/arch/arm64/include/asm/kvm_mmu.h b/arch/arm64/include/asm/kvm_mmu.h
index 390acabdb1b2..b89122ed827d 100644
--- a/arch/arm64/include/asm/kvm_mmu.h
+++ b/arch/arm64/include/asm/kvm_mmu.h
@@ -156,7 +156,6 @@ static inline unsigned long __kern_hyp_va(unsigned long v)
 
 int create_hyp_mappings(void *from, void *to, pgprot_t prot);
 int create_hyp_io_mappings(void *from, void *to, phys_addr_t);
-void free_boot_hyp_pgd(void);
 void free_hyp_pgds(void);
 
 void stage2_unmap_vm(struct kvm *kvm);