From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mike Rapoport Subject: Re: [PATCH v4 20/34] arm: Convert various functions to use ptdescs Date: Wed, 14 Jun 2023 18:03:27 +0300 Message-ID: <20230614150327.GS52412@kernel.org> References: <20230612210423.18611-1-vishal.moola@gmail.com> <20230612210423.18611-21-vishal.moola@gmail.com> Mime-Version: 1.0 Return-path: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1686755045; bh=9A+PDe1vPCUMDrQYdu5z8EQPSeOjm0q+6tl+clXFAfM=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=j5Ugc1koC28gH2KkEPLkPoTIPNK11ApEJ+qx3mv6eyx57zInMns1iK9e2ZeYWZtaS d6VTROxAYi4QnXIkn3k8NB95BIGVtq/48gNq3/0I/WMA49BRIKydm5cPzbMITNJFuZ ukIwVNbIGFF0ylO7WubZ38JabSGFDmsGB/tgUH9+2GD4DtHbeAr300i11RRFVklrjO zXwlgRZnQv07KKoC7y7mb9Y81PZOH2N9ueNVcmIy2/IhSmwSzwFpOrdGsiFw0fBA3k Xwkm0A1j+e4mOhYVoVB8lslu0VNwTEUQ6zk7ZxZcwqL0ZAjNIDJH5uFFjVn0dxTv++ vvViLh1xvoRTQ== Content-Disposition: inline In-Reply-To: <20230612210423.18611-21-vishal.moola@gmail.com> List-ID: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: "Vishal Moola (Oracle)" Cc: Andrew Morton , Matthew Wilcox , linux-mm@kvack.org, linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-csky@vger.kernel.org, linux-hexagon@vger.kernel.org, loongarch@lists.linux.dev, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, linux-openrisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, linux-um@lists.infradead.org, xen-devel@lists.xenproject.org, kvm@vger.kernel.org, Hugh Dickins , Catalin Marinas On Mon, Jun 12, 2023 at 02:04:09PM -0700, Vishal Moola (Oracle) wrote: > As part of the conversions to replace pgtable constructor/destructors with > ptdesc equivalents, convert various page table functions to use ptdescs. > > late_alloc() also uses the __get_free_pages() helper function. Convert > this to use pagetable_alloc() and ptdesc_address() instead to help > standardize page tables further. > > Signed-off-by: Vishal Moola (Oracle) Acked-by: Mike Rapoport (IBM) One comment below. > --- > arch/arm/include/asm/tlb.h | 12 +++++++----- > arch/arm/mm/mmu.c | 6 +++--- > 2 files changed, 10 insertions(+), 8 deletions(-) > > diff --git a/arch/arm/include/asm/tlb.h b/arch/arm/include/asm/tlb.h > index b8cbe03ad260..f40d06ad5d2a 100644 > --- a/arch/arm/include/asm/tlb.h > +++ b/arch/arm/include/asm/tlb.h > @@ -39,7 +39,9 @@ static inline void __tlb_remove_table(void *_table) > static inline void > __pte_free_tlb(struct mmu_gather *tlb, pgtable_t pte, unsigned long addr) > { > - pgtable_pte_page_dtor(pte); > + struct ptdesc *ptdesc = page_ptdesc(pte); > + > + pagetable_pte_dtor(ptdesc); > > #ifndef CONFIG_ARM_LPAE > /* > @@ -50,17 +52,17 @@ __pte_free_tlb(struct mmu_gather *tlb, pgtable_t pte, unsigned long addr) > __tlb_adjust_range(tlb, addr - PAGE_SIZE, 2 * PAGE_SIZE); > #endif > > - tlb_remove_table(tlb, pte); > + tlb_remove_ptdesc(tlb, ptdesc); > } > > static inline void > __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmdp, unsigned long addr) > { > #ifdef CONFIG_ARM_LPAE > - struct page *page = virt_to_page(pmdp); > + struct ptdesc *ptdesc = virt_to_ptdesc(pmdp); > > - pgtable_pmd_page_dtor(page); > - tlb_remove_table(tlb, page); > + pagetable_pmd_dtor(ptdesc); > + tlb_remove_ptdesc(tlb, ptdesc); > #endif > } > > diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c > index 22292cf3381c..294518fd0240 100644 > --- a/arch/arm/mm/mmu.c > +++ b/arch/arm/mm/mmu.c > @@ -737,11 +737,11 @@ static void __init *early_alloc(unsigned long sz) > > static void *__init late_alloc(unsigned long sz) > { > - void *ptr = (void *)__get_free_pages(GFP_PGTABLE_KERNEL, get_order(sz)); > + void *ptdesc = pagetable_alloc(GFP_PGTABLE_KERNEL, get_order(sz)); > > - if (!ptr || !pgtable_pte_page_ctor(virt_to_page(ptr))) > + if (!ptdesc || !pagetable_pte_ctor(ptdesc)) > BUG(); > - return ptr; > + return ptdesc; should be return ptdesc_to_virt(ptdesc); > } > > static pte_t * __init arm_pte_alloc(pmd_t *pmd, unsigned long addr, > -- > 2.40.1 > > -- Sincerely yours, Mike.