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[92.145.124.62]) by smtp.gmail.com with ESMTPSA id 9-20020a05600c234900b00401d8181f8bsm7491028wmq.25.2023.10.02.08.14.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 02 Oct 2023 08:14:42 -0700 (PDT) From: Alexandre Ghiti To: Ryan Roberts , Alexander Potapenko , Marco Elver , Dmitry Vyukov , Paul Walmsley , Palmer Dabbelt , Albert Ou , Anup Patel , Atish Patra , Ard Biesheuvel , Andrey Ryabinin , Andrey Konovalov , Vincenzo Frascino , kasan-dev@googlegroups.com, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-efi@vger.kernel.org, linux-mm@kvack.org Cc: Alexandre Ghiti Subject: [PATCH 4/5] riscv: Suffix all page table entry pointers with 'p' Date: Mon, 2 Oct 2023 17:10:30 +0200 Message-Id: <20231002151031.110551-5-alexghiti@rivosinc.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231002151031.110551-1-alexghiti@rivosinc.com> References: <20231002151031.110551-1-alexghiti@rivosinc.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org That makes it more clear what the underlying type is, no functional changes intended. Signed-off-by: Alexandre Ghiti --- arch/riscv/include/asm/kfence.h | 6 +- arch/riscv/include/asm/kvm_host.h | 2 +- arch/riscv/include/asm/pgalloc.h | 86 +++++++++++++------------- arch/riscv/include/asm/pgtable-64.h | 20 +++--- arch/riscv/kvm/mmu.c | 22 +++---- arch/riscv/mm/fault.c | 38 ++++++------ arch/riscv/mm/hugetlbpage.c | 78 +++++++++++------------ arch/riscv/mm/init.c | 30 ++++----- arch/riscv/mm/kasan_init.c | 96 ++++++++++++++--------------- arch/riscv/mm/pageattr.c | 74 +++++++++++----------- arch/riscv/mm/pgtable.c | 46 +++++++------- 11 files changed, 251 insertions(+), 247 deletions(-) diff --git a/arch/riscv/include/asm/kfence.h b/arch/riscv/include/asm/kfence.h index 0bbffd528096..3b482d0a4633 100644 --- a/arch/riscv/include/asm/kfence.h +++ b/arch/riscv/include/asm/kfence.h @@ -15,12 +15,12 @@ static inline bool arch_kfence_init_pool(void) static inline bool kfence_protect_page(unsigned long addr, bool protect) { - pte_t *pte = virt_to_kpte(addr); + pte_t *ptep = virt_to_kpte(addr); if (protect) - set_pte(pte, __pte(pte_val(*pte) & ~_PAGE_PRESENT)); + set_pte(ptep, __pte(pte_val(*ptep) & ~_PAGE_PRESENT)); else - set_pte(pte, __pte(pte_val(*pte) | _PAGE_PRESENT)); + set_pte(ptep, __pte(pte_val(*ptep) | _PAGE_PRESENT)); flush_tlb_kernel_range(addr, addr + PAGE_SIZE); diff --git a/arch/riscv/include/asm/kvm_host.h b/arch/riscv/include/asm/kvm_host.h index 1ebf20dfbaa6..510045c05ee8 100644 --- a/arch/riscv/include/asm/kvm_host.h +++ b/arch/riscv/include/asm/kvm_host.h @@ -93,7 +93,7 @@ struct kvm_arch { struct kvm_vmid vmid; /* G-stage page table */ - pgd_t *pgd; + pgd_t *pgdp; phys_addr_t pgd_phys; /* Guest Timer */ diff --git a/arch/riscv/include/asm/pgalloc.h b/arch/riscv/include/asm/pgalloc.h index d169a4f41a2e..1bb3c9fcbe04 100644 --- a/arch/riscv/include/asm/pgalloc.h +++ b/arch/riscv/include/asm/pgalloc.h @@ -16,65 +16,65 @@ #include static inline void pmd_populate_kernel(struct mm_struct *mm, - pmd_t *pmd, pte_t *pte) + pmd_t *pmdp, pte_t *ptep) { - unsigned long pfn = virt_to_pfn(pte); + unsigned long pfn = virt_to_pfn(ptep); - set_pmd(pmd, __pmd((pfn << _PAGE_PFN_SHIFT) | _PAGE_TABLE)); + set_pmd(pmdp, __pmd((pfn << _PAGE_PFN_SHIFT) | _PAGE_TABLE)); } static inline void pmd_populate(struct mm_struct *mm, - pmd_t *pmd, pgtable_t pte) + pmd_t *pmdp, pgtable_t pte) { unsigned long pfn = virt_to_pfn(page_address(pte)); - set_pmd(pmd, __pmd((pfn << _PAGE_PFN_SHIFT) | _PAGE_TABLE)); + set_pmd(pmdp, __pmd((pfn << _PAGE_PFN_SHIFT) | _PAGE_TABLE)); } #ifndef __PAGETABLE_PMD_FOLDED -static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) +static inline void pud_populate(struct mm_struct *mm, pud_t *pudp, pmd_t *pmdp) { - unsigned long pfn = virt_to_pfn(pmd); + unsigned long pfn = virt_to_pfn(pmdp); - set_pud(pud, __pud((pfn << _PAGE_PFN_SHIFT) | _PAGE_TABLE)); + set_pud(pudp, __pud((pfn << _PAGE_PFN_SHIFT) | _PAGE_TABLE)); } -static inline void p4d_populate(struct mm_struct *mm, p4d_t *p4d, pud_t *pud) +static inline void p4d_populate(struct mm_struct *mm, p4d_t *p4dp, pud_t *pudp) { if (pgtable_l4_enabled) { - unsigned long pfn = virt_to_pfn(pud); + unsigned long pfn = virt_to_pfn(pudp); - set_p4d(p4d, __p4d((pfn << _PAGE_PFN_SHIFT) | _PAGE_TABLE)); + set_p4d(p4dp, __p4d((pfn << _PAGE_PFN_SHIFT) | _PAGE_TABLE)); } } -static inline void p4d_populate_safe(struct mm_struct *mm, p4d_t *p4d, - pud_t *pud) +static inline void p4d_populate_safe(struct mm_struct *mm, p4d_t *p4dp, + pud_t *pudp) { if (pgtable_l4_enabled) { - unsigned long pfn = virt_to_pfn(pud); + unsigned long pfn = virt_to_pfn(pudp); - set_p4d_safe(p4d, + set_p4d_safe(p4dp, __p4d((pfn << _PAGE_PFN_SHIFT) | _PAGE_TABLE)); } } -static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, p4d_t *p4d) +static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgdp, p4d_t *p4dp) { if (pgtable_l5_enabled) { - unsigned long pfn = virt_to_pfn(p4d); + unsigned long pfn = virt_to_pfn(p4dp); - set_pgd(pgd, __pgd((pfn << _PAGE_PFN_SHIFT) | _PAGE_TABLE)); + set_pgd(pgdp, __pgd((pfn << _PAGE_PFN_SHIFT) | _PAGE_TABLE)); } } -static inline void pgd_populate_safe(struct mm_struct *mm, pgd_t *pgd, - p4d_t *p4d) +static inline void pgd_populate_safe(struct mm_struct *mm, pgd_t *pgdp, + p4d_t *p4dp) { if (pgtable_l5_enabled) { - unsigned long pfn = virt_to_pfn(p4d); + unsigned long pfn = virt_to_pfn(p4dp); - set_pgd_safe(pgd, + set_pgd_safe(pgdp, __pgd((pfn << _PAGE_PFN_SHIFT) | _PAGE_TABLE)); } } @@ -89,13 +89,13 @@ static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr) } #define pud_free pud_free -static inline void pud_free(struct mm_struct *mm, pud_t *pud) +static inline void pud_free(struct mm_struct *mm, pud_t *pudp) { if (pgtable_l4_enabled) - __pud_free(mm, pud); + __pud_free(mm, pudp); } -#define __pud_free_tlb(tlb, pud, addr) pud_free((tlb)->mm, pud) +#define __pud_free_tlb(tlb, pudp, addr) pud_free((tlb)->mm, pudp) #define p4d_alloc_one p4d_alloc_one static inline p4d_t *p4d_alloc_one(struct mm_struct *mm, unsigned long addr) @@ -111,52 +111,52 @@ static inline p4d_t *p4d_alloc_one(struct mm_struct *mm, unsigned long addr) return NULL; } -static inline void __p4d_free(struct mm_struct *mm, p4d_t *p4d) +static inline void __p4d_free(struct mm_struct *mm, p4d_t *p4dp) { - BUG_ON((unsigned long)p4d & (PAGE_SIZE-1)); - free_page((unsigned long)p4d); + BUG_ON((unsigned long)p4dp & (PAGE_SIZE-1)); + free_page((unsigned long)p4dp); } #define p4d_free p4d_free -static inline void p4d_free(struct mm_struct *mm, p4d_t *p4d) +static inline void p4d_free(struct mm_struct *mm, p4d_t *p4dp) { if (pgtable_l5_enabled) - __p4d_free(mm, p4d); + __p4d_free(mm, p4dp); } #define __p4d_free_tlb(tlb, p4d, addr) p4d_free((tlb)->mm, p4d) #endif /* __PAGETABLE_PMD_FOLDED */ -static inline void sync_kernel_mappings(pgd_t *pgd) +static inline void sync_kernel_mappings(pgd_t *pgdp) { - memcpy(pgd + USER_PTRS_PER_PGD, + memcpy(pgdp + USER_PTRS_PER_PGD, init_mm.pgd + USER_PTRS_PER_PGD, (PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t)); } static inline pgd_t *pgd_alloc(struct mm_struct *mm) { - pgd_t *pgd; + pgd_t *pgdp; - pgd = (pgd_t *)__get_free_page(GFP_KERNEL); - if (likely(pgd != NULL)) { - memset(pgd, 0, USER_PTRS_PER_PGD * sizeof(pgd_t)); + pgdp = (pgd_t *)__get_free_page(GFP_KERNEL); + if (likely(pgdp != NULL)) { + memset(pgdp, 0, USER_PTRS_PER_PGD * sizeof(pgd_t)); /* Copy kernel mappings */ - sync_kernel_mappings(pgd); + sync_kernel_mappings(pgdp); } - return pgd; + return pgdp; } #ifndef __PAGETABLE_PMD_FOLDED -#define __pmd_free_tlb(tlb, pmd, addr) pmd_free((tlb)->mm, pmd) +#define __pmd_free_tlb(tlb, pmdp, addr) pmd_free((tlb)->mm, pmdp) #endif /* __PAGETABLE_PMD_FOLDED */ -#define __pte_free_tlb(tlb, pte, buf) \ -do { \ - pagetable_pte_dtor(page_ptdesc(pte)); \ - tlb_remove_page_ptdesc((tlb), page_ptdesc(pte));\ +#define __pte_free_tlb(tlb, ptep, buf) \ +do { \ + pagetable_pte_dtor(page_ptdesc(ptep)); \ + tlb_remove_page_ptdesc((tlb), page_ptdesc(ptep)); \ } while (0) #endif /* CONFIG_MMU */ diff --git a/arch/riscv/include/asm/pgtable-64.h b/arch/riscv/include/asm/pgtable-64.h index a65a352dcfbf..c5f608fe9980 100644 --- a/arch/riscv/include/asm/pgtable-64.h +++ b/arch/riscv/include/asm/pgtable-64.h @@ -303,10 +303,10 @@ static inline int p4d_bad(p4d_t p4d) return 0; } -static inline void p4d_clear(p4d_t *p4d) +static inline void p4d_clear(p4d_t *p4dp) { if (pgtable_l4_enabled) - set_p4d(p4d, __p4d(0)); + set_p4d(p4dp, __p4d(0)); } static inline p4d_t pfn_p4d(unsigned long pfn, pgprot_t prot) @@ -336,12 +336,12 @@ static inline struct page *p4d_page(p4d_t p4d) #define pud_index(addr) (((addr) >> PUD_SHIFT) & (PTRS_PER_PUD - 1)) #define pud_offset pud_offset -static inline pud_t *pud_offset(p4d_t *p4d, unsigned long address) +static inline pud_t *pud_offset(p4d_t *p4dp, unsigned long address) { if (pgtable_l4_enabled) - return p4d_pgtable(*p4d) + pud_index(address); + return p4d_pgtable(*p4dp) + pud_index(address); - return (pud_t *)p4d; + return (pud_t *)p4dp; } static inline void set_pgd(pgd_t *pgdp, pgd_t pgd) @@ -376,10 +376,10 @@ static inline int pgd_bad(pgd_t pgd) return 0; } -static inline void pgd_clear(pgd_t *pgd) +static inline void pgd_clear(pgd_t *pgdp) { if (pgtable_l5_enabled) - set_pgd(pgd, __pgd(0)); + set_pgd(pgdp, __pgd(0)); } static inline p4d_t *pgd_pgtable(pgd_t pgd) @@ -400,12 +400,12 @@ static inline struct page *pgd_page(pgd_t pgd) #define p4d_index(addr) (((addr) >> P4D_SHIFT) & (PTRS_PER_P4D - 1)) #define p4d_offset p4d_offset -static inline p4d_t *p4d_offset(pgd_t *pgd, unsigned long address) +static inline p4d_t *p4d_offset(pgd_t *pgdp, unsigned long address) { if (pgtable_l5_enabled) - return pgd_pgtable(*pgd) + p4d_index(address); + return pgd_pgtable(*pgdp) + p4d_index(address); - return (p4d_t *)pgd; + return (p4d_t *)pgdp; } #endif /* _ASM_RISCV_PGTABLE_64_H */ diff --git a/arch/riscv/kvm/mmu.c b/arch/riscv/kvm/mmu.c index 068c74593871..35db276bf0c2 100644 --- a/arch/riscv/kvm/mmu.c +++ b/arch/riscv/kvm/mmu.c @@ -101,7 +101,7 @@ static bool gstage_get_leaf_entry(struct kvm *kvm, gpa_t addr, u32 current_level = gstage_pgd_levels - 1; *ptep_level = current_level; - ptep = (pte_t *)kvm->arch.pgd; + ptep = (pte_t *)kvm->arch.pgdp; ptep = &ptep[gstage_pte_index(addr, current_level)]; while (ptep && pte_val(*ptep)) { if (gstage_pte_leaf(ptep)) { @@ -139,7 +139,7 @@ static int gstage_set_pte(struct kvm *kvm, u32 level, gpa_t addr, const pte_t *new_pte) { u32 current_level = gstage_pgd_levels - 1; - pte_t *next_ptep = (pte_t *)kvm->arch.pgd; + pte_t *next_ptep = (pte_t *)kvm->arch.pgdp; pte_t *ptep = &next_ptep[gstage_pte_index(addr, current_level)]; if (current_level < level) @@ -541,7 +541,7 @@ int kvm_arch_prepare_memory_region(struct kvm *kvm, bool kvm_unmap_gfn_range(struct kvm *kvm, struct kvm_gfn_range *range) { - if (!kvm->arch.pgd) + if (!kvm->arch.pgdp) return false; gstage_unmap_range(kvm, range->start << PAGE_SHIFT, @@ -555,7 +555,7 @@ bool kvm_set_spte_gfn(struct kvm *kvm, struct kvm_gfn_range *range) int ret; kvm_pfn_t pfn = pte_pfn(range->arg.pte); - if (!kvm->arch.pgd) + if (!kvm->arch.pgdp) return false; WARN_ON(range->end - range->start != 1); @@ -576,7 +576,7 @@ bool kvm_age_gfn(struct kvm *kvm, struct kvm_gfn_range *range) u32 ptep_level = 0; u64 size = (range->end - range->start) << PAGE_SHIFT; - if (!kvm->arch.pgd) + if (!kvm->arch.pgdp) return false; WARN_ON(size != PAGE_SIZE && size != PMD_SIZE && size != PUD_SIZE); @@ -594,7 +594,7 @@ bool kvm_test_age_gfn(struct kvm *kvm, struct kvm_gfn_range *range) u32 ptep_level = 0; u64 size = (range->end - range->start) << PAGE_SHIFT; - if (!kvm->arch.pgd) + if (!kvm->arch.pgdp) return false; WARN_ON(size != PAGE_SIZE && size != PMD_SIZE && size != PUD_SIZE); @@ -712,7 +712,7 @@ int kvm_riscv_gstage_alloc_pgd(struct kvm *kvm) { struct page *pgd_page; - if (kvm->arch.pgd != NULL) { + if (kvm->arch.pgdp != NULL) { kvm_err("kvm_arch already initialized?\n"); return -EINVAL; } @@ -721,7 +721,7 @@ int kvm_riscv_gstage_alloc_pgd(struct kvm *kvm) get_order(gstage_pgd_size)); if (!pgd_page) return -ENOMEM; - kvm->arch.pgd = page_to_virt(pgd_page); + kvm->arch.pgdp = page_to_virt(pgd_page); kvm->arch.pgd_phys = page_to_phys(pgd_page); return 0; @@ -732,10 +732,10 @@ void kvm_riscv_gstage_free_pgd(struct kvm *kvm) void *pgd = NULL; spin_lock(&kvm->mmu_lock); - if (kvm->arch.pgd) { + if (kvm->arch.pgdp) { gstage_unmap_range(kvm, 0UL, gstage_gpa_size, false); - pgd = READ_ONCE(kvm->arch.pgd); - kvm->arch.pgd = NULL; + pgd = READ_ONCE(kvm->arch.pgdp); + kvm->arch.pgdp = NULL; kvm->arch.pgd_phys = 0; } spin_unlock(&kvm->mmu_lock); diff --git a/arch/riscv/mm/fault.c b/arch/riscv/mm/fault.c index 6115d7514972..6284ef4b644a 100644 --- a/arch/riscv/mm/fault.c +++ b/arch/riscv/mm/fault.c @@ -111,11 +111,11 @@ bad_area(struct pt_regs *regs, struct mm_struct *mm, int code, static inline void vmalloc_fault(struct pt_regs *regs, int code, unsigned long addr) { - pgd_t *pgd, *pgd_k; - pud_t *pud_k; - p4d_t *p4d_k; - pmd_t *pmd_k; - pte_t *pte_k; + pgd_t *pgdp, *pgdp_k; + pud_t *pudp_k; + p4d_t *p4dp_k; + pmd_t *pmdp_k; + pte_t *ptep_k; int index; unsigned long pfn; @@ -133,39 +133,39 @@ static inline void vmalloc_fault(struct pt_regs *regs, int code, unsigned long a */ index = pgd_index(addr); pfn = csr_read(CSR_SATP) & SATP_PPN; - pgd = (pgd_t *)pfn_to_virt(pfn) + index; - pgd_k = init_mm.pgd + index; + pgdp = (pgd_t *)pfn_to_virt(pfn) + index; + pgdp_k = init_mm.pgd + index; - if (!pgd_present(*pgd_k)) { + if (!pgd_present(*pgdp_k)) { no_context(regs, addr); return; } - set_pgd(pgd, *pgd_k); + set_pgd(pgdp, *pgdp_k); - p4d_k = p4d_offset(pgd_k, addr); - if (!p4d_present(*p4d_k)) { + p4dp_k = p4d_offset(pgdp_k, addr); + if (!p4d_present(*p4dp_k)) { no_context(regs, addr); return; } - pud_k = pud_offset(p4d_k, addr); - if (!pud_present(*pud_k)) { + pudp_k = pud_offset(p4dp_k, addr); + if (!pud_present(*pudp_k)) { no_context(regs, addr); return; } - if (pud_leaf(*pud_k)) + if (pud_leaf(*pudp_k)) goto flush_tlb; /* * Since the vmalloc area is global, it is unnecessary * to copy individual PTEs */ - pmd_k = pmd_offset(pud_k, addr); - if (!pmd_present(*pmd_k)) { + pmdp_k = pmd_offset(pudp_k, addr); + if (!pmd_present(*pmdp_k)) { no_context(regs, addr); return; } - if (pmd_leaf(*pmd_k)) + if (pmd_leaf(*pmdp_k)) goto flush_tlb; /* @@ -174,8 +174,8 @@ static inline void vmalloc_fault(struct pt_regs *regs, int code, unsigned long a * addresses. If we don't do this, this will just * silently loop forever. */ - pte_k = pte_offset_kernel(pmd_k, addr); - if (!pte_present(*pte_k)) { + ptep_k = pte_offset_kernel(pmdp_k, addr); + if (!pte_present(*ptep_k)) { no_context(regs, addr); return; } diff --git a/arch/riscv/mm/hugetlbpage.c b/arch/riscv/mm/hugetlbpage.c index 96225a8533ad..7781e83b2f29 100644 --- a/arch/riscv/mm/hugetlbpage.c +++ b/arch/riscv/mm/hugetlbpage.c @@ -33,52 +33,52 @@ pte_t *huge_pte_alloc(struct mm_struct *mm, unsigned long sz) { unsigned long order; - pte_t *pte = NULL; - pgd_t *pgd; - p4d_t *p4d; - pud_t *pud; - pmd_t *pmd; - - pgd = pgd_offset(mm, addr); - p4d = p4d_alloc(mm, pgd, addr); - if (!p4d) + pte_t *ptep = NULL; + pgd_t *pgdp; + p4d_t *p4dp; + pud_t *pudp; + pmd_t *pmdp; + + pgdp = pgd_offset(mm, addr); + p4dp = p4d_alloc(mm, pgdp, addr); + if (!p4dp) return NULL; - pud = pud_alloc(mm, p4d, addr); - if (!pud) + pudp = pud_alloc(mm, p4dp, addr); + if (!pudp) return NULL; if (sz == PUD_SIZE) { - pte = (pte_t *)pud; + ptep = (pte_t *)pudp; goto out; } if (sz == PMD_SIZE) { - if (want_pmd_share(vma, addr) && pud_none(*pud)) - pte = huge_pmd_share(mm, vma, addr, pud); + if (want_pmd_share(vma, addr) && pud_none(*pudp)) + ptep = huge_pmd_share(mm, vma, addr, pudp); else - pte = (pte_t *)pmd_alloc(mm, pud, addr); + ptep = (pte_t *)pmd_alloc(mm, pudp, addr); goto out; } - pmd = pmd_alloc(mm, pud, addr); - if (!pmd) + pmdp = pmd_alloc(mm, pudp, addr); + if (!pmdp) return NULL; for_each_napot_order(order) { if (napot_cont_size(order) == sz) { - pte = pte_alloc_huge(mm, pmd, addr & napot_cont_mask(order)); + ptep = pte_alloc_huge(mm, pmdp, addr & napot_cont_mask(order)); break; } } out: - if (pte) { - pte_t pteval = ptep_get_lockless(pte); + if (ptep) { + pte_t pteval = ptep_get_lockless(ptep); WARN_ON_ONCE(pte_present(pteval) && !pte_huge(pteval)); } - return pte; + return ptep; } pte_t *huge_pte_offset(struct mm_struct *mm, @@ -86,43 +86,43 @@ pte_t *huge_pte_offset(struct mm_struct *mm, unsigned long sz) { unsigned long order; - pte_t *pte = NULL; - pgd_t *pgd; - p4d_t *p4d; - pud_t *pud; - pmd_t *pmd; - - pgd = pgd_offset(mm, addr); - if (!pgd_present(*pgd)) + pte_t *ptep = NULL; + pgd_t *pgdp; + p4d_t *p4dp; + pud_t *pudp; + pmd_t *pmdp; + + pgdp = pgd_offset(mm, addr); + if (!pgd_present(*pgdp)) return NULL; - p4d = p4d_offset(pgd, addr); - if (!p4d_present(*p4d)) + p4dp = p4d_offset(pgdp, addr); + if (!p4d_present(*p4dp)) return NULL; - pud = pud_offset(p4d, addr); + pudp = pud_offset(p4dp, addr); if (sz == PUD_SIZE) /* must be pud huge, non-present or none */ - return (pte_t *)pud; + return (pte_t *)pudp; - if (!pud_present(*pud)) + if (!pud_present(*pudp)) return NULL; - pmd = pmd_offset(pud, addr); + pmdp = pmd_offset(pudp, addr); if (sz == PMD_SIZE) /* must be pmd huge, non-present or none */ - return (pte_t *)pmd; + return (pte_t *)pmdp; - if (!pmd_present(*pmd)) + if (!pmd_present(*pmdp)) return NULL; for_each_napot_order(order) { if (napot_cont_size(order) == sz) { - pte = pte_offset_huge(pmd, addr & napot_cont_mask(order)); + ptep = pte_offset_huge(pmdp, addr & napot_cont_mask(order)); break; } } - return pte; + return ptep; } static pte_t get_clear_contig(struct mm_struct *mm, diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c index 0798bd861dcb..2afd13fd6e18 100644 --- a/arch/riscv/mm/init.c +++ b/arch/riscv/mm/init.c @@ -883,7 +883,7 @@ static void __init relocate_kernel(void) #endif /* CONFIG_RELOCATABLE */ #ifdef CONFIG_XIP_KERNEL -static void __init create_kernel_page_table(pgd_t *pgdir, +static void __init create_kernel_page_table(pgd_t *pgdp, __always_unused bool early) { uintptr_t va, end_va; @@ -891,25 +891,25 @@ static void __init create_kernel_page_table(pgd_t *pgdir, /* Map the flash resident part */ end_va = kernel_map.virt_addr + kernel_map.xiprom_sz; for (va = kernel_map.virt_addr; va < end_va; va += PMD_SIZE) - create_pgd_mapping(pgdir, va, + create_pgd_mapping(pgdp, va, kernel_map.xiprom + (va - kernel_map.virt_addr), PMD_SIZE, PAGE_KERNEL_EXEC); /* Map the data in RAM */ end_va = kernel_map.virt_addr + XIP_OFFSET + kernel_map.size; for (va = kernel_map.virt_addr + XIP_OFFSET; va < end_va; va += PMD_SIZE) - create_pgd_mapping(pgdir, va, + create_pgd_mapping(pgdp, va, kernel_map.phys_addr + (va - (kernel_map.virt_addr + XIP_OFFSET)), PMD_SIZE, PAGE_KERNEL); } #else -static void __init create_kernel_page_table(pgd_t *pgdir, bool early) +static void __init create_kernel_page_table(pgd_t *pgdp, bool early) { uintptr_t va, end_va; end_va = kernel_map.virt_addr + kernel_map.size; for (va = kernel_map.virt_addr; va < end_va; va += PMD_SIZE) - create_pgd_mapping(pgdir, va, + create_pgd_mapping(pgdp, va, kernel_map.phys_addr + (va - kernel_map.virt_addr), PMD_SIZE, early ? @@ -1521,30 +1521,30 @@ static void __init preallocate_pgd_pages_range(unsigned long start, unsigned lon const char *lvl; for (addr = start; addr < end && addr >= start; addr = ALIGN(addr + 1, PGDIR_SIZE)) { - pgd_t *pgd = pgd_offset_k(addr); - p4d_t *p4d; - pud_t *pud; - pmd_t *pmd; + pgd_t *pgdp = pgd_offset_k(addr); + p4d_t *p4dp; + pud_t *pudp; + pmd_t *pmdp; lvl = "p4d"; - p4d = p4d_alloc(&init_mm, pgd, addr); - if (!p4d) + p4dp = p4d_alloc(&init_mm, pgdp, addr); + if (!p4dp) goto failed; if (pgtable_l5_enabled) continue; lvl = "pud"; - pud = pud_alloc(&init_mm, p4d, addr); - if (!pud) + pudp = pud_alloc(&init_mm, p4dp, addr); + if (!pudp) goto failed; if (pgtable_l4_enabled) continue; lvl = "pmd"; - pmd = pmd_alloc(&init_mm, pud, addr); - if (!pmd) + pmdp = pmd_alloc(&init_mm, pudp, addr); + if (!pmdp) goto failed; } return; diff --git a/arch/riscv/mm/kasan_init.c b/arch/riscv/mm/kasan_init.c index 5e39dcf23fdb..ce0cb8e51d0a 100644 --- a/arch/riscv/mm/kasan_init.c +++ b/arch/riscv/mm/kasan_init.c @@ -26,17 +26,17 @@ static pgd_t tmp_pg_dir[PTRS_PER_PGD] __page_aligned_bss; static p4d_t tmp_p4d[PTRS_PER_P4D] __page_aligned_bss; static pud_t tmp_pud[PTRS_PER_PUD] __page_aligned_bss; -static void __init kasan_populate_pte(pmd_t *pmd, unsigned long vaddr, unsigned long end) +static void __init kasan_populate_pte(pmd_t *pmdp, unsigned long vaddr, unsigned long end) { phys_addr_t phys_addr; pte_t *ptep, *p; - if (pmd_none(*pmd)) { + if (pmd_none(*pmdp)) { p = memblock_alloc(PTRS_PER_PTE * sizeof(pte_t), PAGE_SIZE); - set_pmd(pmd, pfn_pmd(PFN_DOWN(__pa(p)), PAGE_TABLE)); + set_pmd(pmdp, pfn_pmd(PFN_DOWN(__pa(p)), PAGE_TABLE)); } - ptep = pte_offset_kernel(pmd, vaddr); + ptep = pte_offset_kernel(pmdp, vaddr); do { if (pte_none(*ptep)) { @@ -47,18 +47,18 @@ static void __init kasan_populate_pte(pmd_t *pmd, unsigned long vaddr, unsigned } while (ptep++, vaddr += PAGE_SIZE, vaddr != end); } -static void __init kasan_populate_pmd(pud_t *pud, unsigned long vaddr, unsigned long end) +static void __init kasan_populate_pmd(pud_t *pudp, unsigned long vaddr, unsigned long end) { phys_addr_t phys_addr; pmd_t *pmdp, *p; unsigned long next; - if (pud_none(*pud)) { + if (pud_none(*pudp)) { p = memblock_alloc(PTRS_PER_PMD * sizeof(pmd_t), PAGE_SIZE); - set_pud(pud, pfn_pud(PFN_DOWN(__pa(p)), PAGE_TABLE)); + set_pud(pudp, pfn_pud(PFN_DOWN(__pa(p)), PAGE_TABLE)); } - pmdp = pmd_offset(pud, vaddr); + pmdp = pmd_offset(pudp, vaddr); do { next = pmd_addr_end(vaddr, end); @@ -76,19 +76,19 @@ static void __init kasan_populate_pmd(pud_t *pud, unsigned long vaddr, unsigned } while (pmdp++, vaddr = next, vaddr != end); } -static void __init kasan_populate_pud(p4d_t *p4d, +static void __init kasan_populate_pud(p4d_t *p4dp, unsigned long vaddr, unsigned long end) { phys_addr_t phys_addr; pud_t *pudp, *p; unsigned long next; - if (p4d_none(*p4d)) { + if (p4d_none(*p4dp)) { p = memblock_alloc(PTRS_PER_PUD * sizeof(pud_t), PAGE_SIZE); - set_p4d(p4d, pfn_p4d(PFN_DOWN(__pa(p)), PAGE_TABLE)); + set_p4d(p4dp, pfn_p4d(PFN_DOWN(__pa(p)), PAGE_TABLE)); } - pudp = pud_offset(p4d, vaddr); + pudp = pud_offset(p4dp, vaddr); do { next = pud_addr_end(vaddr, end); @@ -106,19 +106,19 @@ static void __init kasan_populate_pud(p4d_t *p4d, } while (pudp++, vaddr = next, vaddr != end); } -static void __init kasan_populate_p4d(pgd_t *pgd, +static void __init kasan_populate_p4d(pgd_t *pgdp, unsigned long vaddr, unsigned long end) { phys_addr_t phys_addr; p4d_t *p4dp, *p; unsigned long next; - if (pgd_none(*pgd)) { + if (pgd_none(*pgdp)) { p = memblock_alloc(PTRS_PER_P4D * sizeof(p4d_t), PAGE_SIZE); - set_pgd(pgd, pfn_pgd(PFN_DOWN(__pa(p)), PAGE_TABLE)); + set_pgd(pgdp, pfn_pgd(PFN_DOWN(__pa(p)), PAGE_TABLE)); } - p4dp = p4d_offset(pgd, vaddr); + p4dp = p4d_offset(pgdp, vaddr); do { next = p4d_addr_end(vaddr, end); @@ -162,14 +162,14 @@ static void __init kasan_populate_pgd(pgd_t *pgdp, static void __init kasan_early_clear_pud(p4d_t *p4dp, unsigned long vaddr, unsigned long end) { - pud_t *pudp, *base_pud; + pud_t *pudp, *base_pudp; unsigned long next; if (!pgtable_l4_enabled) { pudp = (pud_t *)p4dp; } else { - base_pud = pt_ops.get_pud_virt(pfn_to_phys(_p4d_pfn(*p4dp))); - pudp = base_pud + pud_index(vaddr); + base_pudp = pt_ops.get_pud_virt(pfn_to_phys(_p4d_pfn(*p4dp))); + pudp = base_pudp + pud_index(vaddr); } do { @@ -187,14 +187,14 @@ static void __init kasan_early_clear_pud(p4d_t *p4dp, static void __init kasan_early_clear_p4d(pgd_t *pgdp, unsigned long vaddr, unsigned long end) { - p4d_t *p4dp, *base_p4d; + p4d_t *p4dp, *base_p4dp; unsigned long next; if (!pgtable_l5_enabled) { p4dp = (p4d_t *)pgdp; } else { - base_p4d = pt_ops.get_p4d_virt(pfn_to_phys(_pgd_pfn(*pgdp))); - p4dp = base_p4d + p4d_index(vaddr); + base_p4dp = pt_ops.get_p4d_virt(pfn_to_phys(_pgd_pfn(*pgdp))); + p4dp = base_p4dp + p4d_index(vaddr); } do { @@ -232,15 +232,15 @@ static void __init kasan_early_populate_pud(p4d_t *p4dp, unsigned long vaddr, unsigned long end) { - pud_t *pudp, *base_pud; + pud_t *pudp, *base_pudp; phys_addr_t phys_addr; unsigned long next; if (!pgtable_l4_enabled) { pudp = (pud_t *)p4dp; } else { - base_pud = pt_ops.get_pud_virt(pfn_to_phys(_p4d_pfn(*p4dp))); - pudp = base_pud + pud_index(vaddr); + base_pudp = pt_ops.get_pud_virt(pfn_to_phys(_p4d_pfn(*p4dp))); + pudp = base_pudp + pud_index(vaddr); } do { @@ -261,7 +261,7 @@ static void __init kasan_early_populate_p4d(pgd_t *pgdp, unsigned long vaddr, unsigned long end) { - p4d_t *p4dp, *base_p4d; + p4d_t *p4dp, *base_p4dp; phys_addr_t phys_addr; unsigned long next; @@ -277,8 +277,8 @@ static void __init kasan_early_populate_p4d(pgd_t *pgdp, if (!pgtable_l5_enabled) { p4dp = (p4d_t *)pgdp; } else { - base_p4d = pt_ops.get_p4d_virt(pfn_to_phys(_pgd_pfn(*pgdp))); - p4dp = base_p4d + p4d_index(vaddr); + base_p4dp = pt_ops.get_p4d_virt(pfn_to_phys(_pgd_pfn(*pgdp))); + p4dp = base_p4dp + p4d_index(vaddr); } do { @@ -371,63 +371,63 @@ static void __init kasan_populate(void *start, void *end) kasan_populate_pgd(pgd_offset_k(vaddr), vaddr, vend); } -static void __init kasan_shallow_populate_pud(p4d_t *p4d, +static void __init kasan_shallow_populate_pud(p4d_t *p4dp, unsigned long vaddr, unsigned long end) { unsigned long next; void *p; - pud_t *pud_k = pud_offset(p4d, vaddr); + pud_t *pudp_k = pud_offset(p4dp, vaddr); do { next = pud_addr_end(vaddr, end); - if (pud_none(*pud_k)) { + if (pud_none(*pudp_k)) { p = memblock_alloc(PAGE_SIZE, PAGE_SIZE); - set_pud(pud_k, pfn_pud(PFN_DOWN(__pa(p)), PAGE_TABLE)); + set_pud(pudp_k, pfn_pud(PFN_DOWN(__pa(p)), PAGE_TABLE)); continue; } BUG(); - } while (pud_k++, vaddr = next, vaddr != end); + } while (pudp_k++, vaddr = next, vaddr != end); } -static void __init kasan_shallow_populate_p4d(pgd_t *pgd, +static void __init kasan_shallow_populate_p4d(pgd_t *pgdp, unsigned long vaddr, unsigned long end) { unsigned long next; void *p; - p4d_t *p4d_k = p4d_offset(pgd, vaddr); + p4d_t *p4dp_k = p4d_offset(pgdp, vaddr); do { next = p4d_addr_end(vaddr, end); - if (p4d_none(*p4d_k)) { + if (p4d_none(*p4dp_k)) { p = memblock_alloc(PAGE_SIZE, PAGE_SIZE); - set_p4d(p4d_k, pfn_p4d(PFN_DOWN(__pa(p)), PAGE_TABLE)); + set_p4d(p4dp_k, pfn_p4d(PFN_DOWN(__pa(p)), PAGE_TABLE)); continue; } - kasan_shallow_populate_pud(p4d_k, vaddr, end); - } while (p4d_k++, vaddr = next, vaddr != end); + kasan_shallow_populate_pud(p4dp_k, vaddr, end); + } while (p4dp_k++, vaddr = next, vaddr != end); } static void __init kasan_shallow_populate_pgd(unsigned long vaddr, unsigned long end) { unsigned long next; void *p; - pgd_t *pgd_k = pgd_offset_k(vaddr); + pgd_t *pgdp_k = pgd_offset_k(vaddr); do { next = pgd_addr_end(vaddr, end); - if (pgd_none(*pgd_k)) { + if (pgd_none(*pgdp_k)) { p = memblock_alloc(PAGE_SIZE, PAGE_SIZE); - set_pgd(pgd_k, pfn_pgd(PFN_DOWN(__pa(p)), PAGE_TABLE)); + set_pgd(pgdp_k, pfn_pgd(PFN_DOWN(__pa(p)), PAGE_TABLE)); continue; } - kasan_shallow_populate_p4d(pgd_k, vaddr, next); - } while (pgd_k++, vaddr = next, vaddr != end); + kasan_shallow_populate_p4d(pgdp_k, vaddr, next); + } while (pgdp_k++, vaddr = next, vaddr != end); } static void __init kasan_shallow_populate(void *start, void *end) @@ -441,7 +441,7 @@ static void __init kasan_shallow_populate(void *start, void *end) static void __init create_tmp_mapping(void) { void *ptr; - p4d_t *base_p4d; + p4d_t *base_p4dp; /* * We need to clean the early mapping: this is hard to achieve "in-place", @@ -455,16 +455,16 @@ static void __init create_tmp_mapping(void) memcpy(tmp_p4d, ptr, sizeof(p4d_t) * PTRS_PER_P4D); set_pgd(&tmp_pg_dir[pgd_index(KASAN_SHADOW_END)], pfn_pgd(PFN_DOWN(__pa(tmp_p4d)), PAGE_TABLE)); - base_p4d = tmp_p4d; + base_p4dp = tmp_p4d; } else { - base_p4d = (p4d_t *)tmp_pg_dir; + base_p4dp = (p4d_t *)tmp_pg_dir; } /* Copy the last pud since it is shared with the kernel mapping. */ if (pgtable_l4_enabled) { ptr = (pud_t *)p4d_page_vaddr(*(base_p4d + p4d_index(KASAN_SHADOW_END))); memcpy(tmp_pud, ptr, sizeof(pud_t) * PTRS_PER_PUD); - set_p4d(&base_p4d[p4d_index(KASAN_SHADOW_END)], + set_p4d(&base_p4dp[p4d_index(KASAN_SHADOW_END)], pfn_p4d(PFN_DOWN(__pa(tmp_pud)), PAGE_TABLE)); } } diff --git a/arch/riscv/mm/pageattr.c b/arch/riscv/mm/pageattr.c index 161d0b34c2cb..ffca6f19dd9c 100644 --- a/arch/riscv/mm/pageattr.c +++ b/arch/riscv/mm/pageattr.c @@ -25,65 +25,65 @@ static unsigned long set_pageattr_masks(unsigned long val, struct mm_walk *walk) return new_val; } -static int pageattr_pgd_entry(pgd_t *pgd, unsigned long addr, +static int pageattr_pgd_entry(pgd_t *pgdp, unsigned long addr, unsigned long next, struct mm_walk *walk) { - pgd_t val = READ_ONCE(*pgd); + pgd_t val = READ_ONCE(*pgdp); if (pgd_leaf(val)) { val = __pgd(set_pageattr_masks(pgd_val(val), walk)); - set_pgd(pgd, val); + set_pgd(pgdp, val); } return 0; } -static int pageattr_p4d_entry(p4d_t *p4d, unsigned long addr, +static int pageattr_p4d_entry(p4d_t *p4dp, unsigned long addr, unsigned long next, struct mm_walk *walk) { - p4d_t val = READ_ONCE(*p4d); + p4d_t val = READ_ONCE(*p4dp); if (p4d_leaf(val)) { val = __p4d(set_pageattr_masks(p4d_val(val), walk)); - set_p4d(p4d, val); + set_p4d(p4dp, val); } return 0; } -static int pageattr_pud_entry(pud_t *pud, unsigned long addr, +static int pageattr_pud_entry(pud_t *pudp, unsigned long addr, unsigned long next, struct mm_walk *walk) { - pud_t val = READ_ONCE(*pud); + pud_t val = READ_ONCE(*pudp); if (pud_leaf(val)) { val = __pud(set_pageattr_masks(pud_val(val), walk)); - set_pud(pud, val); + set_pud(pudp, val); } return 0; } -static int pageattr_pmd_entry(pmd_t *pmd, unsigned long addr, +static int pageattr_pmd_entry(pmd_t *pmdp, unsigned long addr, unsigned long next, struct mm_walk *walk) { - pmd_t val = READ_ONCE(*pmd); + pmd_t val = READ_ONCE(*pmdp); if (pmd_leaf(val)) { val = __pmd(set_pageattr_masks(pmd_val(val), walk)); - set_pmd(pmd, val); + set_pmd(pmdp, val); } return 0; } -static int pageattr_pte_entry(pte_t *pte, unsigned long addr, +static int pageattr_pte_entry(pte_t *ptep, unsigned long addr, unsigned long next, struct mm_walk *walk) { - pte_t val = READ_ONCE(*pte); + pte_t val = READ_ONCE(*ptep); val = __pte(set_pageattr_masks(pte_val(val), walk)); - set_pte(pte, val); + set_pte(ptep, val); return 0; } @@ -209,36 +209,40 @@ void __kernel_map_pages(struct page *page, int numpages, int enable) bool kernel_page_present(struct page *page) { unsigned long addr = (unsigned long)page_address(page); - pgd_t *pgd; - pud_t *pud; - p4d_t *p4d; - pmd_t *pmd; - pte_t *pte; - - pgd = pgd_offset_k(addr); - if (!pgd_present(*pgd)) + pgd_t *pgdp, pgd; + pud_t *pudp, pud; + p4d_t *p4dp, p4d; + pmd_t *pmdp, pmd; + pte_t *ptep; + + pgdp = pgd_offset_k(addr); + pgd = *pgdp; + if (!pgd_present(pgd)) return false; - if (pgd_leaf(*pgd)) + if (pgd_leaf(pgd)) return true; - p4d = p4d_offset(pgd, addr); - if (!p4d_present(*p4d)) + p4dp = p4d_offset(pgdp, addr); + p4d = *p4dp; + if (!p4d_present(p4d)) return false; - if (p4d_leaf(*p4d)) + if (p4d_leaf(p4d)) return true; - pud = pud_offset(p4d, addr); - if (!pud_present(*pud)) + pudp = pud_offset(p4dp, addr); + pud = *pudp; + if (!pud_present(pud)) return false; - if (pud_leaf(*pud)) + if (pud_leaf(pud)) return true; - pmd = pmd_offset(pud, addr); - if (!pmd_present(*pmd)) + pmdp = pmd_offset(pudp, addr); + pmd = *pmdp; + if (!pmd_present(pmd)) return false; - if (pmd_leaf(*pmd)) + if (pmd_leaf(pmd)) return true; - pte = pte_offset_kernel(pmd, addr); - return pte_present(*pte); + ptep = pte_offset_kernel(pmdp, addr); + return pte_present(*ptep); } diff --git a/arch/riscv/mm/pgtable.c b/arch/riscv/mm/pgtable.c index fef4e7328e49..9c93f24d0829 100644 --- a/arch/riscv/mm/pgtable.c +++ b/arch/riscv/mm/pgtable.c @@ -6,77 +6,77 @@ #include #ifdef CONFIG_HAVE_ARCH_HUGE_VMAP -int p4d_set_huge(p4d_t *p4d, phys_addr_t addr, pgprot_t prot) +int p4d_set_huge(p4d_t *p4dp, phys_addr_t addr, pgprot_t prot) { return 0; } -void p4d_clear_huge(p4d_t *p4d) +void p4d_clear_huge(p4d_t *p4dp) { } -int pud_set_huge(pud_t *pud, phys_addr_t phys, pgprot_t prot) +int pud_set_huge(pud_t *pudp, phys_addr_t phys, pgprot_t prot) { pud_t new_pud = pfn_pud(__phys_to_pfn(phys), prot); - set_pud(pud, new_pud); + set_pud(pudp, new_pud); return 1; } -int pud_clear_huge(pud_t *pud) +int pud_clear_huge(pud_t *pudp) { - if (!pud_leaf(READ_ONCE(*pud))) + if (!pud_leaf(READ_ONCE(*pudp))) return 0; - pud_clear(pud); + pud_clear(pudp); return 1; } -int pud_free_pmd_page(pud_t *pud, unsigned long addr) +int pud_free_pmd_page(pud_t *pudp, unsigned long addr) { - pmd_t *pmd = pud_pgtable(*pud); + pmd_t *pmdp = pud_pgtable(*pudp); int i; - pud_clear(pud); + pud_clear(pudp); flush_tlb_kernel_range(addr, addr + PUD_SIZE); for (i = 0; i < PTRS_PER_PMD; i++) { - if (!pmd_none(pmd[i])) { - pte_t *pte = (pte_t *)pmd_page_vaddr(pmd[i]); + if (!pmd_none(pmdp[i])) { + pte_t *ptep = (pte_t *)pmd_page_vaddr(pmdp[i]); - pte_free_kernel(NULL, pte); + pte_free_kernel(NULL, ptep); } } - pmd_free(NULL, pmd); + pmd_free(NULL, pmdp); return 1; } -int pmd_set_huge(pmd_t *pmd, phys_addr_t phys, pgprot_t prot) +int pmd_set_huge(pmd_t *pmdp, phys_addr_t phys, pgprot_t prot) { pmd_t new_pmd = pfn_pmd(__phys_to_pfn(phys), prot); - set_pmd(pmd, new_pmd); + set_pmd(pmdp, new_pmd); return 1; } -int pmd_clear_huge(pmd_t *pmd) +int pmd_clear_huge(pmd_t *pmdp) { - if (!pmd_leaf(READ_ONCE(*pmd))) + if (!pmd_leaf(READ_ONCE(*pmdp))) return 0; - pmd_clear(pmd); + pmd_clear(pmdp); return 1; } -int pmd_free_pte_page(pmd_t *pmd, unsigned long addr) +int pmd_free_pte_page(pmd_t *pmdp, unsigned long addr) { - pte_t *pte = (pte_t *)pmd_page_vaddr(*pmd); + pte_t *ptep = (pte_t *)pmd_page_vaddr(*pmdp); - pmd_clear(pmd); + pmd_clear(pmdp); flush_tlb_kernel_range(addr, addr + PMD_SIZE); - pte_free_kernel(NULL, pte); + pte_free_kernel(NULL, ptep); return 1; }