From: Alexandre Ghiti <alexandre.ghiti@canonical.com> To: Jonathan Corbet <corbet@lwn.net>, Paul Walmsley <paul.walmsley@sifive.com>, Palmer Dabbelt <palmer@dabbelt.com>, Albert Ou <aou@eecs.berkeley.edu>, Zong Li <zong.li@sifive.com>, Anup Patel <anup@brainfault.org>, Atish Patra <Atish.Patra@rivosinc.com>, Christoph Hellwig <hch@lst.de>, Andrey Ryabinin <ryabinin.a.a@gmail.com>, Alexander Potapenko <glider@google.com>, Andrey Konovalov <andreyknvl@gmail.com>, Dmitry Vyukov <dvyukov@google.com>, Ard Biesheuvel <ardb@kernel.org>, Arnd Bergmann <arnd@arndb.de>, Kees Cook <keescook@chromium.org>, Guo Ren <guoren@linux.alibaba.com>, Heinrich Schuchardt <heinrich.schuchardt@canonical.com>, Mayuresh Chitale <mchitale@ventanamicro.com>, panqinglin2020@iscas.ac.cn, linux-doc@vger.kernel.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com, linux-efi@vger.kernel.org, linux-arch@vger.kernel.org Cc: Alexandre Ghiti <alexandre.ghiti@canonical.com> Subject: [PATCH v3 06/13] asm-generic: Prepare for riscv use of pud_alloc_one and pud_free Date: Mon, 6 Dec 2021 11:46:50 +0100 [thread overview] Message-ID: <20211206104657.433304-7-alexandre.ghiti@canonical.com> (raw) In-Reply-To: <20211206104657.433304-1-alexandre.ghiti@canonical.com> In the following commits, riscv will almost use the generic versions of pud_alloc_one and pud_free but an additional check is required since those functions are only relevant when using at least a 4-level page table, which will be determined at runtime on riscv. So move the content of those functions into other functions that riscv can use without duplicating code. Signed-off-by: Alexandre Ghiti <alexandre.ghiti@canonical.com> --- include/asm-generic/pgalloc.h | 24 ++++++++++++++++++------ 1 file changed, 18 insertions(+), 6 deletions(-) diff --git a/include/asm-generic/pgalloc.h b/include/asm-generic/pgalloc.h index 02932efad3ab..977bea16cf1b 100644 --- a/include/asm-generic/pgalloc.h +++ b/include/asm-generic/pgalloc.h @@ -147,6 +147,15 @@ static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd) #if CONFIG_PGTABLE_LEVELS > 3 +static inline pud_t *__pud_alloc_one(struct mm_struct *mm, unsigned long addr) +{ + gfp_t gfp = GFP_PGTABLE_USER; + + if (mm == &init_mm) + gfp = GFP_PGTABLE_KERNEL; + return (pud_t *)get_zeroed_page(gfp); +} + #ifndef __HAVE_ARCH_PUD_ALLOC_ONE /** * pud_alloc_one - allocate a page for PUD-level page table @@ -159,20 +168,23 @@ static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd) */ static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr) { - gfp_t gfp = GFP_PGTABLE_USER; - - if (mm == &init_mm) - gfp = GFP_PGTABLE_KERNEL; - return (pud_t *)get_zeroed_page(gfp); + return __pud_alloc_one(mm, addr); } #endif -static inline void pud_free(struct mm_struct *mm, pud_t *pud) +static inline void __pud_free(struct mm_struct *mm, pud_t *pud) { BUG_ON((unsigned long)pud & (PAGE_SIZE-1)); free_page((unsigned long)pud); } +#ifndef __HAVE_ARCH_PUD_FREE +static inline void pud_free(struct mm_struct *mm, pud_t *pud) +{ + __pud_free(mm, pud); +} +#endif + #endif /* CONFIG_PGTABLE_LEVELS > 3 */ #ifndef __HAVE_ARCH_PGD_FREE -- 2.32.0
WARNING: multiple messages have this Message-ID (diff)
From: Alexandre Ghiti <alexandre.ghiti@canonical.com> To: Jonathan Corbet <corbet@lwn.net>, Paul Walmsley <paul.walmsley@sifive.com>, Palmer Dabbelt <palmer@dabbelt.com>, Albert Ou <aou@eecs.berkeley.edu>, Zong Li <zong.li@sifive.com>, Anup Patel <anup@brainfault.org>, Atish Patra <Atish.Patra@rivosinc.com>, Christoph Hellwig <hch@lst.de>, Andrey Ryabinin <ryabinin.a.a@gmail.com>, Alexander Potapenko <glider@google.com>, Andrey Konovalov <andreyknvl@gmail.com>, Dmitry Vyukov <dvyukov@google.com>, Ard Biesheuvel <ardb@kernel.org>, Arnd Bergmann <arnd@arndb.de>, Kees Cook <keescook@chromium.org>, Guo Ren <guoren@linux.alibaba.com>, Heinrich Schuchardt <heinrich.schuchardt@canonical.com>, Mayuresh Chitale <mchitale@ventanamicro.com>, panqinglin2020@iscas.ac.cn, linux-doc@vger.kernel.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com, linux-efi@vger.kernel.org, linux-arch@vger.kernel.org Cc: Alexandre Ghiti <alexandre.ghiti@canonical.com> Subject: [PATCH v3 06/13] asm-generic: Prepare for riscv use of pud_alloc_one and pud_free Date: Mon, 6 Dec 2021 11:46:50 +0100 [thread overview] Message-ID: <20211206104657.433304-7-alexandre.ghiti@canonical.com> (raw) In-Reply-To: <20211206104657.433304-1-alexandre.ghiti@canonical.com> In the following commits, riscv will almost use the generic versions of pud_alloc_one and pud_free but an additional check is required since those functions are only relevant when using at least a 4-level page table, which will be determined at runtime on riscv. So move the content of those functions into other functions that riscv can use without duplicating code. Signed-off-by: Alexandre Ghiti <alexandre.ghiti@canonical.com> --- include/asm-generic/pgalloc.h | 24 ++++++++++++++++++------ 1 file changed, 18 insertions(+), 6 deletions(-) diff --git a/include/asm-generic/pgalloc.h b/include/asm-generic/pgalloc.h index 02932efad3ab..977bea16cf1b 100644 --- a/include/asm-generic/pgalloc.h +++ b/include/asm-generic/pgalloc.h @@ -147,6 +147,15 @@ static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd) #if CONFIG_PGTABLE_LEVELS > 3 +static inline pud_t *__pud_alloc_one(struct mm_struct *mm, unsigned long addr) +{ + gfp_t gfp = GFP_PGTABLE_USER; + + if (mm == &init_mm) + gfp = GFP_PGTABLE_KERNEL; + return (pud_t *)get_zeroed_page(gfp); +} + #ifndef __HAVE_ARCH_PUD_ALLOC_ONE /** * pud_alloc_one - allocate a page for PUD-level page table @@ -159,20 +168,23 @@ static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd) */ static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr) { - gfp_t gfp = GFP_PGTABLE_USER; - - if (mm == &init_mm) - gfp = GFP_PGTABLE_KERNEL; - return (pud_t *)get_zeroed_page(gfp); + return __pud_alloc_one(mm, addr); } #endif -static inline void pud_free(struct mm_struct *mm, pud_t *pud) +static inline void __pud_free(struct mm_struct *mm, pud_t *pud) { BUG_ON((unsigned long)pud & (PAGE_SIZE-1)); free_page((unsigned long)pud); } +#ifndef __HAVE_ARCH_PUD_FREE +static inline void pud_free(struct mm_struct *mm, pud_t *pud) +{ + __pud_free(mm, pud); +} +#endif + #endif /* CONFIG_PGTABLE_LEVELS > 3 */ #ifndef __HAVE_ARCH_PGD_FREE -- 2.32.0 _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv
next prev parent reply other threads:[~2021-12-06 10:53 UTC|newest] Thread overview: 70+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-12-06 10:46 [PATCH v3 00/13] Introduce sv48 support without relocatable kernel Alexandre Ghiti 2021-12-06 10:46 ` Alexandre Ghiti 2021-12-06 10:46 ` [PATCH v3 01/13] riscv: Move KASAN mapping next to the kernel mapping Alexandre Ghiti 2021-12-06 10:46 ` Alexandre Ghiti 2021-12-06 16:18 ` Jisheng Zhang 2021-12-06 16:18 ` Jisheng Zhang 2021-12-06 10:46 ` [PATCH v3 02/13] riscv: Split early kasan mapping to prepare sv48 introduction Alexandre Ghiti 2021-12-06 10:46 ` Alexandre Ghiti 2021-12-06 10:46 ` [PATCH v3 03/13] riscv: Introduce functions to switch pt_ops Alexandre Ghiti 2021-12-06 10:46 ` Alexandre Ghiti 2021-12-06 10:46 ` [PATCH v3 04/13] riscv: Allow to dynamically define VA_BITS Alexandre Ghiti 2021-12-06 10:46 ` Alexandre Ghiti 2021-12-06 10:46 ` [PATCH v3 05/13] riscv: Get rid of MAXPHYSMEM configs Alexandre Ghiti 2021-12-06 10:46 ` Alexandre Ghiti 2021-12-06 10:46 ` Alexandre Ghiti [this message] 2021-12-06 10:46 ` [PATCH v3 06/13] asm-generic: Prepare for riscv use of pud_alloc_one and pud_free Alexandre Ghiti 2021-12-06 10:46 ` [PATCH v3 07/13] riscv: Implement sv48 support Alexandre Ghiti 2021-12-06 10:46 ` Alexandre Ghiti 2021-12-06 11:05 ` Alexandre ghiti 2021-12-06 11:05 ` Alexandre ghiti 2021-12-09 4:32 ` 潘庆霖 2021-12-09 4:32 ` 潘庆霖 2021-12-26 8:59 ` Jisheng Zhang 2021-12-26 8:59 ` Jisheng Zhang 2022-01-04 12:44 ` Alexandre Ghiti 2022-01-04 12:44 ` Alexandre Ghiti 2021-12-29 3:42 ` Guo Ren 2021-12-29 3:42 ` Guo Ren 2022-01-04 12:42 ` Alexandre Ghiti 2022-01-04 12:42 ` Alexandre Ghiti 2022-04-26 5:57 ` Nick Kossifidis 2022-04-26 5:57 ` Nick Kossifidis 2021-12-06 10:46 ` [PATCH v3 08/13] riscv: Use pgtable_l4_enabled to output mmu_type in cpuinfo Alexandre Ghiti 2021-12-06 10:46 ` Alexandre Ghiti 2021-12-06 10:46 ` [PATCH v3 09/13] riscv: Explicit comment about user virtual address space size Alexandre Ghiti 2021-12-06 10:46 ` Alexandre Ghiti 2021-12-06 10:46 ` [PATCH v3 10/13] riscv: Improve virtual kernel memory layout dump Alexandre Ghiti 2021-12-06 10:46 ` Alexandre Ghiti 2021-12-09 4:18 ` 潘庆霖 2021-12-09 9:09 ` Alexandre ghiti 2021-12-06 10:46 ` [PATCH v3 11/13] Documentation: riscv: Add sv48 description to VM layout Alexandre Ghiti 2021-12-06 10:46 ` Alexandre Ghiti 2021-12-06 10:46 ` [PATCH v3 12/13] riscv: Initialize thread pointer before calling C functions Alexandre Ghiti 2021-12-06 10:46 ` Alexandre Ghiti 2021-12-20 9:11 ` Guo Ren 2021-12-20 9:11 ` Guo Ren 2021-12-20 9:17 ` Ard Biesheuvel 2021-12-20 9:17 ` Ard Biesheuvel 2021-12-20 13:40 ` Guo Ren 2021-12-20 13:40 ` Guo Ren 2022-01-10 8:03 ` Alexandre ghiti 2022-01-10 8:03 ` Alexandre ghiti 2021-12-06 10:46 ` [PATCH v3 13/13] riscv: Allow user to downgrade to sv39 when hw supports sv48 if !KASAN Alexandre Ghiti 2021-12-06 10:46 ` Alexandre Ghiti 2021-12-06 11:08 ` [PATCH v3 00/13] Introduce sv48 support without relocatable kernel Alexandre ghiti 2021-12-06 11:08 ` Alexandre ghiti 2022-01-20 4:18 ` Palmer Dabbelt 2022-01-20 4:18 ` Palmer Dabbelt 2022-01-20 7:30 ` Alexandre Ghiti 2022-01-20 7:30 ` Alexandre Ghiti 2022-01-20 10:05 ` Alexandre Ghiti 2022-01-20 10:05 ` Alexandre Ghiti 2022-02-18 10:45 ` Alexandre Ghiti 2022-02-18 10:45 ` Alexandre Ghiti 2022-04-01 12:56 ` Alexandre Ghiti 2022-04-01 12:56 ` Alexandre Ghiti 2022-04-23 1:50 ` Palmer Dabbelt 2022-04-23 1:50 ` Palmer Dabbelt 2022-06-02 3:43 ` Palmer Dabbelt 2022-06-02 3:43 ` Palmer Dabbelt
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