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Message-ID: <20231012-envision-grooving-e6e0461099f1@spud>
Date: Thu, 12 Oct 2023 12:33:15 +0100
From: Conor Dooley <conor@...nel.org>
To: Alexandre Ghiti <alexghiti@...osinc.com>
Cc: Ryan Roberts <ryan.roberts@....com>,
Alexander Potapenko <glider@...gle.com>,
Marco Elver <elver@...gle.com>,
Dmitry Vyukov <dvyukov@...gle.com>,
Paul Walmsley <paul.walmsley@...ive.com>,
Palmer Dabbelt <palmer@...belt.com>,
Albert Ou <aou@...s.berkeley.edu>,
Anup Patel <anup@...infault.org>,
Atish Patra <atishp@...shpatra.org>,
Ard Biesheuvel <ardb@...nel.org>,
Andrey Ryabinin <ryabinin.a.a@...il.com>,
Andrey Konovalov <andreyknvl@...il.com>,
Vincenzo Frascino <vincenzo.frascino@....com>,
kasan-dev@...glegroups.com, linux-riscv@...ts.infradead.org,
linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
kvm-riscv@...ts.infradead.org, linux-efi@...r.kernel.org,
linux-mm@...ck.org
Subject: Re: [PATCH 4/5] riscv: Suffix all page table entry pointers with 'p'
Hey Alex,
On Mon, Oct 02, 2023 at 05:10:30PM +0200, Alexandre Ghiti wrote:
> That makes it more clear what the underlying type is, no functional
> changes intended.
Scanning through stuff on patchwork, this really doesn't seem worth the
churn. I thought this sort of Hungarian notation-esque stuff was a
relic of a time before I could read & our docs even go as far as to
it call brain damaged:
https://www.kernel.org/doc/html/v4.10/process/coding-style.html#naming
>
> Signed-off-by: Alexandre Ghiti <alexghiti@...osinc.com>
> ---
> 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));
For example this is a 10-line function, where the definition is going to
be visible unless you're coding on a smart-watch...
I dunno, this seems like churn for churns sake /shrug
Conor.
>
> 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 <asm-generic/pgalloc.h>
>
> 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 <linux/pgtable.h>
>
> #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;
> }
>
> --
> 2.39.2
>
>
> _______________________________________________
> linux-riscv mailing list
> linux-riscv@...ts.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-riscv
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