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| author | Marc Zyngier <marc.zyngier@arm.com> | 2016-06-30 18:40:46 +0100 |
|---|---|---|
| committer | Christoffer Dall <christoffer.dall@linaro.org> | 2016-07-03 23:41:27 +0200 |
| commit | 26781f9ce16801a9c680dae1a7c1ca2fd3d112bd (patch) | |
| tree | 1a2cde1e17110ea2be33b1221ca63dded101bccf | |
| parent | 12fda8123d74903d1f65fb006fe4964e23ede0d1 (diff) | |
| download | linux-26781f9ce16801a9c680dae1a7c1ca2fd3d112bd.tar.gz linux-26781f9ce16801a9c680dae1a7c1ca2fd3d112bd.tar.xz | |
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>
| -rw-r--r-- | arch/arm/include/asm/kvm_mmu.h | 1 | ||||
| -rw-r--r-- | arch/arm/kvm/arm.c | 4 | ||||
| -rw-r--r-- | arch/arm/kvm/mmu.c | 30 | ||||
| -rw-r--r-- | arch/arm64/include/asm/kvm_mmu.h | 1 |
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); |