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linux-sg2042
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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>
This commit is contained in:
Marc Zyngier 2016-06-30 18:40:46 +01:00 committed by Christoffer Dall
parent 12fda8123d
commit 26781f9ce1
4 changed files with 7 additions and 29 deletions
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1
arch/arm/include/asm/kvm_mmu.h
View File

@ -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);

4
arch/arm/kvm/arm.c
View File

@ -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);

30
arch/arm/kvm/mmu.c
View File

@ -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)

1
arch/arm64/include/asm/kvm_mmu.h
View File

@ -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);