1 files changed, 0 insertions, 435 deletions
diff --git a/arch/arm/include/asm/kvm_mmu.h b/arch/arm/include/asm/kvm_mmu.h
deleted file mode 100644
index 0d84d50bf9ba..000000000000
--- a/arch/arm/include/asm/kvm_mmu.h
+++ /dev/null
@@ -1,435 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Copyright (C) 2012 - Virtual Open Systems and Columbia University
- * Author: Christoffer Dall <c.dall@virtualopensystems.com>
- */
-
-#ifndef __ARM_KVM_MMU_H__
-#define __ARM_KVM_MMU_H__
-
-#include <asm/memory.h>
-#include <asm/page.h>
-
-/*
- * We directly use the kernel VA for the HYP, as we can directly share
- * the mapping (HTTBR "covers" TTBR1).
- */
-#define kern_hyp_va(kva)	(kva)
-
-/* Contrary to arm64, there is no need to generate a PC-relative address */
-#define hyp_symbol_addr(s)						\
-	({								\
-		typeof(s) *addr = &(s);					\
-		addr;							\
-	})
-
-#ifndef __ASSEMBLY__
-
-#include <linux/highmem.h>
-#include <asm/cacheflush.h>
-#include <asm/cputype.h>
-#include <asm/kvm_arm.h>
-#include <asm/kvm_hyp.h>
-#include <asm/pgalloc.h>
-#include <asm/stage2_pgtable.h>
-
-/* Ensure compatibility with arm64 */
-#define VA_BITS			32
-
-#define kvm_phys_shift(kvm)		KVM_PHYS_SHIFT
-#define kvm_phys_size(kvm)		(1ULL << kvm_phys_shift(kvm))
-#define kvm_phys_mask(kvm)		(kvm_phys_size(kvm) - 1ULL)
-#define kvm_vttbr_baddr_mask(kvm)	VTTBR_BADDR_MASK
-
-#define stage2_pgd_size(kvm)		(PTRS_PER_S2_PGD * sizeof(pgd_t))
-
-int create_hyp_mappings(void *from, void *to, pgprot_t prot);
-int create_hyp_io_mappings(phys_addr_t phys_addr, size_t size,
-			   void __iomem **kaddr,
-			   void __iomem **haddr);
-int create_hyp_exec_mappings(phys_addr_t phys_addr, size_t size,
-			     void **haddr);
-void free_hyp_pgds(void);
-
-void stage2_unmap_vm(struct kvm *kvm);
-int kvm_alloc_stage2_pgd(struct kvm *kvm);
-void kvm_free_stage2_pgd(struct kvm *kvm);
-int kvm_phys_addr_ioremap(struct kvm *kvm, phys_addr_t guest_ipa,
-			  phys_addr_t pa, unsigned long size, bool writable);
-
-int kvm_handle_guest_abort(struct kvm_vcpu *vcpu, struct kvm_run *run);
-
-void kvm_mmu_free_memory_caches(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);
-void kvm_clear_hyp_idmap(void);
-
-#define kvm_mk_pmd(ptep)	__pmd(__pa(ptep) | PMD_TYPE_TABLE)
-#define kvm_mk_pud(pmdp)	__pud(__pa(pmdp) | PMD_TYPE_TABLE)
-#define kvm_mk_pgd(pudp)	({ BUILD_BUG(); 0; })
-
-#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)	(__pud(0))
-
-#define kvm_pud_pfn(pud)	({ WARN_ON(1); 0; })
-
-
-#define kvm_pmd_mkhuge(pmd)	pmd_mkhuge(pmd)
-/* No support for pud hugepages */
-#define kvm_pud_mkhuge(pud)	( {WARN_ON(1); pud; })
-
-/*
- * The following kvm_*pud*() functions are provided strictly to allow
- * sharing code with arm64. They should never be called in practice.
- */
-static inline void kvm_set_s2pud_readonly(pud_t *pud)
-{
-	WARN_ON(1);
-}
-
-static inline bool kvm_s2pud_readonly(pud_t *pud)
-{
-	WARN_ON(1);
-	return false;
-}
-
-static inline void kvm_set_pud(pud_t *pud, pud_t new_pud)
-{
-	WARN_ON(1);
-}
-
-static inline pud_t kvm_s2pud_mkwrite(pud_t pud)
-{
-	WARN_ON(1);
-	return pud;
-}
-
-static inline pud_t kvm_s2pud_mkexec(pud_t pud)
-{
-	WARN_ON(1);
-	return pud;
-}
-
-static inline bool kvm_s2pud_exec(pud_t *pud)
-{
-	WARN_ON(1);
-	return false;
-}
-
-static inline pud_t kvm_s2pud_mkyoung(pud_t pud)
-{
-	BUG();
-	return pud;
-}
-
-static inline bool kvm_s2pud_young(pud_t pud)
-{
-	WARN_ON(1);
-	return false;
-}
-
-static inline pte_t kvm_s2pte_mkwrite(pte_t pte)
-{
-	pte_val(pte) |= L_PTE_S2_RDWR;
-	return pte;
-}
-
-static inline pmd_t kvm_s2pmd_mkwrite(pmd_t pmd)
-{
-	pmd_val(pmd) |= L_PMD_S2_RDWR;
-	return pmd;
-}
-
-static inline pte_t kvm_s2pte_mkexec(pte_t pte)
-{
-	pte_val(pte) &= ~L_PTE_XN;
-	return pte;
-}
-
-static inline pmd_t kvm_s2pmd_mkexec(pmd_t pmd)
-{
-	pmd_val(pmd) &= ~PMD_SECT_XN;
-	return pmd;
-}
-
-static inline void kvm_set_s2pte_readonly(pte_t *pte)
-{
-	pte_val(*pte) = (pte_val(*pte) & ~L_PTE_S2_RDWR) | L_PTE_S2_RDONLY;
-}
-
-static inline bool kvm_s2pte_readonly(pte_t *pte)
-{
-	return (pte_val(*pte) & L_PTE_S2_RDWR) == L_PTE_S2_RDONLY;
-}
-
-static inline bool kvm_s2pte_exec(pte_t *pte)
-{
-	return !(pte_val(*pte) & L_PTE_XN);
-}
-
-static inline void kvm_set_s2pmd_readonly(pmd_t *pmd)
-{
-	pmd_val(*pmd) = (pmd_val(*pmd) & ~L_PMD_S2_RDWR) | L_PMD_S2_RDONLY;
-}
-
-static inline bool kvm_s2pmd_readonly(pmd_t *pmd)
-{
-	return (pmd_val(*pmd) & L_PMD_S2_RDWR) == L_PMD_S2_RDONLY;
-}
-
-static inline bool kvm_s2pmd_exec(pmd_t *pmd)
-{
-	return !(pmd_val(*pmd) & PMD_SECT_XN);
-}
-
-static inline bool kvm_page_empty(void *ptr)
-{
-	struct page *ptr_page = virt_to_page(ptr);
-	return page_count(ptr_page) == 1;
-}
-
-#define kvm_pte_table_empty(kvm, ptep) kvm_page_empty(ptep)
-#define kvm_pmd_table_empty(kvm, pmdp) kvm_page_empty(pmdp)
-#define kvm_pud_table_empty(kvm, pudp) false
-
-#define hyp_pte_table_empty(ptep) kvm_page_empty(ptep)
-#define hyp_pmd_table_empty(pmdp) kvm_page_empty(pmdp)
-#define hyp_pud_table_empty(pudp) false
-
-struct kvm;
-
-#define kvm_flush_dcache_to_poc(a,l)	__cpuc_flush_dcache_area((a), (l))
-
-static inline bool vcpu_has_cache_enabled(struct kvm_vcpu *vcpu)
-{
-	return (vcpu_cp15(vcpu, c1_SCTLR) & 0b101) == 0b101;
-}
-
-static inline void __clean_dcache_guest_page(kvm_pfn_t pfn, unsigned long size)
-{
-	/*
-	 * Clean the dcache to the Point of Coherency.
-	 *
-	 * We need to do this through a kernel mapping (using the
-	 * user-space mapping has proved to be the wrong
-	 * solution). For that, we need to kmap one page at a time,
-	 * and iterate over the range.
-	 */
-
-	VM_BUG_ON(size & ~PAGE_MASK);
-
-	while (size) {
-		void *va = kmap_atomic_pfn(pfn);
-
-		kvm_flush_dcache_to_poc(va, PAGE_SIZE);
-
-		size -= PAGE_SIZE;
-		pfn++;
-
-		kunmap_atomic(va);
-	}
-}
-
-static inline void __invalidate_icache_guest_page(kvm_pfn_t pfn,
-						  unsigned long size)
-{
-	u32 iclsz;
-
-	/*
-	 * If we are going to insert an instruction page and the icache is
-	 * either VIPT or PIPT, there is a potential problem where the host
-	 * (or another VM) may have used the same page as this guest, and we
-	 * read incorrect data from the icache.  If we're using a PIPT cache,
-	 * we can invalidate just that page, but if we are using a VIPT cache
-	 * we need to invalidate the entire icache - damn shame - as written
-	 * in the ARM ARM (DDI 0406C.b - Page B3-1393).
-	 *
-	 * VIVT caches are tagged using both the ASID and the VMID and doesn't
-	 * need any kind of flushing (DDI 0406C.b - Page B3-1392).
-	 */
-
-	VM_BUG_ON(size & ~PAGE_MASK);
-
-	if (icache_is_vivt_asid_tagged())
-		return;
-
-	if (!icache_is_pipt()) {
-		/* any kind of VIPT cache */
-		__flush_icache_all();
-		return;
-	}
-
-	/*
-	 * CTR IminLine contains Log2 of the number of words in the
-	 * cache line, so we can get the number of words as
-	 * 2 << (IminLine - 1).  To get the number of bytes, we
-	 * multiply by 4 (the number of bytes in a 32-bit word), and
-	 * get 4 << (IminLine).
-	 */
-	iclsz = 4 << (read_cpuid(CPUID_CACHETYPE) & 0xf);
-
-	while (size) {
-		void *va = kmap_atomic_pfn(pfn);
-		void *end = va + PAGE_SIZE;
-		void *addr = va;
-
-		do {
-			write_sysreg(addr, ICIMVAU);
-			addr += iclsz;
-		} while (addr < end);
-
-		dsb(ishst);
-		isb();
-
-		size -= PAGE_SIZE;
-		pfn++;
-
-		kunmap_atomic(va);
-	}
-
-	/* Check if we need to invalidate the BTB */
-	if ((read_cpuid_ext(CPUID_EXT_MMFR1) >> 28) != 4) {
-		write_sysreg(0, BPIALLIS);
-		dsb(ishst);
-		isb();
-	}
-}
-
-static inline void __kvm_flush_dcache_pte(pte_t pte)
-{
-	void *va = kmap_atomic(pte_page(pte));
-
-	kvm_flush_dcache_to_poc(va, PAGE_SIZE);
-
-	kunmap_atomic(va);
-}
-
-static inline void __kvm_flush_dcache_pmd(pmd_t pmd)
-{
-	unsigned long size = PMD_SIZE;
-	kvm_pfn_t pfn = pmd_pfn(pmd);
-
-	while (size) {
-		void *va = kmap_atomic_pfn(pfn);
-
-		kvm_flush_dcache_to_poc(va, PAGE_SIZE);
-
-		pfn++;
-		size -= PAGE_SIZE;
-
-		kunmap_atomic(va);
-	}
-}
-
-static inline void __kvm_flush_dcache_pud(pud_t pud)
-{
-}
-
-#define kvm_virt_to_phys(x)		virt_to_idmap((unsigned long)(x))
-
-void kvm_set_way_flush(struct kvm_vcpu *vcpu);
-void kvm_toggle_cache(struct kvm_vcpu *vcpu, bool was_enabled);
-
-static inline bool __kvm_cpu_uses_extended_idmap(void)
-{
-	return false;
-}
-
-static inline unsigned long __kvm_idmap_ptrs_per_pgd(void)
-{
-	return PTRS_PER_PGD;
-}
-
-static inline void __kvm_extend_hypmap(pgd_t *boot_hyp_pgd,
-				       pgd_t *hyp_pgd,
-				       pgd_t *merged_hyp_pgd,
-				       unsigned long hyp_idmap_start) { }
-
-static inline unsigned int kvm_get_vmid_bits(void)
-{
-	return 8;
-}
-
-/*
- * We are not in the kvm->srcu critical section most of the time, so we take
- * the SRCU read lock here. Since we copy the data from the user page, we
- * can immediately drop the lock again.
- */
-static inline int kvm_read_guest_lock(struct kvm *kvm,
-				      gpa_t gpa, void *data, unsigned long len)
-{
-	int srcu_idx = srcu_read_lock(&kvm->srcu);
-	int ret = kvm_read_guest(kvm, gpa, data, len);
-
-	srcu_read_unlock(&kvm->srcu, srcu_idx);
-
-	return ret;
-}
-
-static inline int kvm_write_guest_lock(struct kvm *kvm, gpa_t gpa,
-				       const void *data, unsigned long len)
-{
-	int srcu_idx = srcu_read_lock(&kvm->srcu);
-	int ret = kvm_write_guest(kvm, gpa, data, len);
-
-	srcu_read_unlock(&kvm->srcu, srcu_idx);
-
-	return ret;
-}
-
-static inline void *kvm_get_hyp_vector(void)
-{
-	switch(read_cpuid_part()) {
-#ifdef CONFIG_HARDEN_BRANCH_PREDICTOR
-	case ARM_CPU_PART_CORTEX_A12:
-	case ARM_CPU_PART_CORTEX_A17:
-	{
-		extern char __kvm_hyp_vector_bp_inv[];
-		return kvm_ksym_ref(__kvm_hyp_vector_bp_inv);
-	}
-
-	case ARM_CPU_PART_BRAHMA_B15:
-	case ARM_CPU_PART_CORTEX_A15:
-	{
-		extern char __kvm_hyp_vector_ic_inv[];
-		return kvm_ksym_ref(__kvm_hyp_vector_ic_inv);
-	}
-#endif
-	default:
-	{
-		extern char __kvm_hyp_vector[];
-		return kvm_ksym_ref(__kvm_hyp_vector);
-	}
-	}
-}
-
-static inline int kvm_map_vectors(void)
-{
-	return 0;
-}
-
-static inline int hyp_map_aux_data(void)
-{
-	return 0;
-}
-
-#define kvm_phys_to_vttbr(addr)		(addr)
-
-static inline void kvm_set_ipa_limit(void) {}
-
-static __always_inline u64 kvm_get_vttbr(struct kvm *kvm)
-{
-	struct kvm_vmid *vmid = &kvm->arch.vmid;
-	u64 vmid_field, baddr;
-
-	baddr = kvm->arch.pgd_phys;
-	vmid_field = (u64)vmid->vmid << VTTBR_VMID_SHIFT;
-	return kvm_phys_to_vttbr(baddr) | vmid_field;
-}
-
-#endif	/* !__ASSEMBLY__ */
-
-#endif /* __ARM_KVM_MMU_H__ */