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Diffstat (limited to 'arch/arm64/include/asm/kvm_mmu.h')
-rw-r--r--arch/arm64/include/asm/kvm_mmu.h64
1 files changed, 2 insertions, 62 deletions
diff --git a/arch/arm64/include/asm/kvm_mmu.h b/arch/arm64/include/asm/kvm_mmu.h
index a3c0d05311ef..e3fee0acd1a2 100644
--- a/arch/arm64/include/asm/kvm_mmu.h
+++ b/arch/arm64/include/asm/kvm_mmu.h
@@ -45,18 +45,6 @@
*/
#define TRAMPOLINE_VA (HYP_PAGE_OFFSET_MASK & PAGE_MASK)
-/*
- * KVM_MMU_CACHE_MIN_PAGES is the number of stage2 page table translation
- * levels in addition to the PGD and potentially the PUD which are
- * pre-allocated (we pre-allocate the fake PGD and the PUD when the Stage-2
- * tables use one level of tables less than the kernel.
- */
-#ifdef CONFIG_ARM64_64K_PAGES
-#define KVM_MMU_CACHE_MIN_PAGES 1
-#else
-#define KVM_MMU_CACHE_MIN_PAGES 2
-#endif
-
#ifdef __ASSEMBLY__
#include <asm/alternative.h>
@@ -155,69 +143,21 @@ static inline bool kvm_s2pmd_readonly(pmd_t *pmd)
static inline void *kvm_get_hwpgd(struct kvm *kvm)
{
- pgd_t *pgd = kvm->arch.pgd;
- pud_t *pud;
-
- if (KVM_PREALLOC_LEVEL == 0)
- return pgd;
-
- pud = pud_offset(pgd, 0);
- if (KVM_PREALLOC_LEVEL == 1)
- return pud;
-
- BUG_ON(KVM_PREALLOC_LEVEL != 2);
- return pmd_offset(pud, 0);
+ return kvm->arch.pgd;
}
static inline unsigned int kvm_get_hwpgd_size(void)
{
- if (KVM_PREALLOC_LEVEL > 0)
- return PTRS_PER_S2_PGD * PAGE_SIZE;
return PTRS_PER_S2_PGD * sizeof(pgd_t);
}
-/*
- * Allocate fake pgd for the host kernel page table macros to work.
- * This is not used by the hardware and we have no alignment
- * requirement for this allocation.
- */
static inline pgd_t *kvm_setup_fake_pgd(pgd_t *hwpgd)
{
- int i;
- pgd_t *pgd;
-
- if (!KVM_PREALLOC_LEVEL)
- return hwpgd;
-
- /*
- * When KVM_PREALLOC_LEVEL==2, we allocate a single page for
- * the PMD and the kernel will use folded pud.
- * When KVM_PREALLOC_LEVEL==1, we allocate 2 consecutive PUD
- * pages.
- */
-
- pgd = kmalloc(PTRS_PER_S2_PGD * sizeof(pgd_t),
- GFP_KERNEL | __GFP_ZERO);
- if (!pgd)
- return ERR_PTR(-ENOMEM);
-
- /* Plug the HW PGD into the fake one. */
- for (i = 0; i < PTRS_PER_S2_PGD; i++) {
- if (KVM_PREALLOC_LEVEL == 1)
- pgd_populate(NULL, pgd + i,
- (pud_t *)hwpgd + i * PTRS_PER_PUD);
- else if (KVM_PREALLOC_LEVEL == 2)
- pud_populate(NULL, pud_offset(pgd, 0) + i,
- (pmd_t *)hwpgd + i * PTRS_PER_PMD);
- }
-
- return pgd;
+ return hwpgd;
}
static inline void kvm_free_fake_pgd(pgd_t *pgd)
{
- if (KVM_PREALLOC_LEVEL > 0)
- kfree(pgd);
}
static inline bool kvm_page_empty(void *ptr)
{