KVM: arm64: Remove unused page-table code

Now that KVM is using the generic page-table code to manage the guest
stage-2 page-tables, we can remove a bunch of unused macros, #defines
and static inline functions from the old implementation.

Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Gavin Shan <gshan@redhat.com>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Quentin Perret <qperret@google.com>
Link: https://lore.kernel.org/r/20200911132529.19844-20-will@kernel.org

1 files changed, 0 insertions, 171 deletions

diff --git a/arch/arm64/include/asm/kvm_mmu.h b/arch/arm64/include/asm/kvm_mmu.h
index 42fb50cfe0d8..c490fe8089b3 100644
--- a/arch/arm64/include/asm/kvm_mmu.h
+++ b/arch/arm64/include/asm/kvm_mmu.h
@@ -107,12 +107,6 @@ static __always_inline unsigned long __kern_hyp_va(unsigned long v)
 #define kvm_phys_size(kvm)		(_AC(1, ULL) << kvm_phys_shift(kvm))
 #define kvm_phys_mask(kvm)		(kvm_phys_size(kvm) - _AC(1, ULL))
 
-static inline bool kvm_page_empty(void *ptr)
-{
-	struct page *ptr_page = virt_to_page(ptr);
-	return page_count(ptr_page) == 1;
-}
-
 #include <asm/kvm_pgtable.h>
 #include <asm/stage2_pgtable.h>
 
@@ -135,123 +129,6 @@ int kvm_handle_guest_abort(struct kvm_vcpu *vcpu);
 phys_addr_t kvm_mmu_get_httbr(void);
 phys_addr_t kvm_get_idmap_vector(void);
 int kvm_mmu_init(void);
-#define kvm_mk_pmd(ptep)					\
-	__pmd(__phys_to_pmd_val(__pa(ptep)) | PMD_TYPE_TABLE)
-#define kvm_mk_pud(pmdp)					\
-	__pud(__phys_to_pud_val(__pa(pmdp)) | PMD_TYPE_TABLE)
-#define kvm_mk_p4d(pmdp)					\
-	__p4d(__phys_to_p4d_val(__pa(pmdp)) | PUD_TYPE_TABLE)
-
-#define kvm_set_pud(pudp, pud)		set_pud(pudp, pud)
-
-#define kvm_pfn_pte(pfn, prot)		pfn_pte(pfn, prot)
-#define kvm_pfn_pmd(pfn, prot)		pfn_pmd(pfn, prot)
-#define kvm_pfn_pud(pfn, prot)		pfn_pud(pfn, prot)
-
-#define kvm_pud_pfn(pud)		pud_pfn(pud)
-
-#define kvm_pmd_mkhuge(pmd)		pmd_mkhuge(pmd)
-#define kvm_pud_mkhuge(pud)		pud_mkhuge(pud)
-
-static inline pte_t kvm_s2pte_mkwrite(pte_t pte)
-{
-	pte_val(pte) |= PTE_S2_RDWR;
-	return pte;
-}
-
-static inline pmd_t kvm_s2pmd_mkwrite(pmd_t pmd)
-{
-	pmd_val(pmd) |= PMD_S2_RDWR;
-	return pmd;
-}
-
-static inline pud_t kvm_s2pud_mkwrite(pud_t pud)
-{
-	pud_val(pud) |= PUD_S2_RDWR;
-	return pud;
-}
-
-static inline pte_t kvm_s2pte_mkexec(pte_t pte)
-{
-	pte_val(pte) &= ~PTE_S2_XN;
-	return pte;
-}
-
-static inline pmd_t kvm_s2pmd_mkexec(pmd_t pmd)
-{
-	pmd_val(pmd) &= ~PMD_S2_XN;
-	return pmd;
-}
-
-static inline pud_t kvm_s2pud_mkexec(pud_t pud)
-{
-	pud_val(pud) &= ~PUD_S2_XN;
-	return pud;
-}
-
-static inline void kvm_set_s2pte_readonly(pte_t *ptep)
-{
-	pteval_t old_pteval, pteval;
-
-	pteval = READ_ONCE(pte_val(*ptep));
-	do {
-		old_pteval = pteval;
-		pteval &= ~PTE_S2_RDWR;
-		pteval |= PTE_S2_RDONLY;
-		pteval = cmpxchg_relaxed(&pte_val(*ptep), old_pteval, pteval);
-	} while (pteval != old_pteval);
-}
-
-static inline bool kvm_s2pte_readonly(pte_t *ptep)
-{
-	return (READ_ONCE(pte_val(*ptep)) & PTE_S2_RDWR) == PTE_S2_RDONLY;
-}
-
-static inline bool kvm_s2pte_exec(pte_t *ptep)
-{
-	return !(READ_ONCE(pte_val(*ptep)) & PTE_S2_XN);
-}
-
-static inline void kvm_set_s2pmd_readonly(pmd_t *pmdp)
-{
-	kvm_set_s2pte_readonly((pte_t *)pmdp);
-}
-
-static inline bool kvm_s2pmd_readonly(pmd_t *pmdp)
-{
-	return kvm_s2pte_readonly((pte_t *)pmdp);
-}
-
-static inline bool kvm_s2pmd_exec(pmd_t *pmdp)
-{
-	return !(READ_ONCE(pmd_val(*pmdp)) & PMD_S2_XN);
-}
-
-static inline void kvm_set_s2pud_readonly(pud_t *pudp)
-{
-	kvm_set_s2pte_readonly((pte_t *)pudp);
-}
-
-static inline bool kvm_s2pud_readonly(pud_t *pudp)
-{
-	return kvm_s2pte_readonly((pte_t *)pudp);
-}
-
-static inline bool kvm_s2pud_exec(pud_t *pudp)
-{
-	return !(READ_ONCE(pud_val(*pudp)) & PUD_S2_XN);
-}
-
-static inline pud_t kvm_s2pud_mkyoung(pud_t pud)
-{
-	return pud_mkyoung(pud);
-}
-
-static inline bool kvm_s2pud_young(pud_t pud)
-{
-	return pud_young(pud);
-}
-
 
 struct kvm;
 
@@ -293,30 +170,6 @@ static inline void __invalidate_icache_guest_page(kvm_pfn_t pfn,
 	}
 }
 
-static inline void __kvm_flush_dcache_pte(pte_t pte)
-{
-	if (!cpus_have_const_cap(ARM64_HAS_STAGE2_FWB)) {
-		struct page *page = pte_page(pte);
-		kvm_flush_dcache_to_poc(page_address(page), PAGE_SIZE);
-	}
-}
-
-static inline void __kvm_flush_dcache_pmd(pmd_t pmd)
-{
-	if (!cpus_have_const_cap(ARM64_HAS_STAGE2_FWB)) {
-		struct page *page = pmd_page(pmd);
-		kvm_flush_dcache_to_poc(page_address(page), PMD_SIZE);
-	}
-}
-
-static inline void __kvm_flush_dcache_pud(pud_t pud)
-{
-	if (!cpus_have_const_cap(ARM64_HAS_STAGE2_FWB)) {
-		struct page *page = pud_page(pud);
-		kvm_flush_dcache_to_poc(page_address(page), PUD_SIZE);
-	}
-}
-
 void kvm_set_way_flush(struct kvm_vcpu *vcpu);
 void kvm_toggle_cache(struct kvm_vcpu *vcpu, bool was_enabled);
 
@@ -477,30 +330,6 @@ static inline int hyp_map_aux_data(void)
 
 #define kvm_phys_to_vttbr(addr)		phys_to_ttbr(addr)
 
-/*
- * Get the magic number 'x' for VTTBR:BADDR of this KVM instance.
- * With v8.2 LVA extensions, 'x' should be a minimum of 6 with
- * 52bit IPS.
- */
-static inline int arm64_vttbr_x(u32 ipa_shift, u32 levels)
-{
-	int x = ARM64_VTTBR_X(ipa_shift, levels);
-
-	return (IS_ENABLED(CONFIG_ARM64_PA_BITS_52) && x < 6) ? 6 : x;
-}
-
-static inline u64 vttbr_baddr_mask(u32 ipa_shift, u32 levels)
-{
-	unsigned int x = arm64_vttbr_x(ipa_shift, levels);
-
-	return GENMASK_ULL(PHYS_MASK_SHIFT - 1, x);
-}
-
-static inline u64 kvm_vttbr_baddr_mask(struct kvm *kvm)
-{
-	return vttbr_baddr_mask(kvm_phys_shift(kvm), kvm_stage2_levels(kvm));
-}
-
 static __always_inline u64 kvm_get_vttbr(struct kvm_s2_mmu *mmu)
 {
 	struct kvm_vmid *vmid = &mmu->vmid;