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>

diff --git a/arch/arm/include/asm/kvm_mmu.h b/arch/arm/include/asm/kvm_mmu.h
index 5d161d1..d5fd9fb 100644 (file)
--- 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 0887cc1..9b8c537 100644 (file)
--- 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 dd4ccc7..0b36dd5 100644 (file)
--- a/arch/arm/kvm/mmu.c
+++ b/arch/arm/kvm/mmu.c
@@ -481,27 +481,6 @@ static void unmap_hyp_range(pgd_t *pgdp, phys_addr_t start, u64 size)
        } while (pgd++, addr = next, addr != end);
 }
 
-/**
- * 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
  *
@@ -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 390acab..b89122e 100644 (file)
--- 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);