From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id F3A69C64ED8 for ; Wed, 15 Feb 2023 20:09:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229505AbjBOUJf (ORCPT ); Wed, 15 Feb 2023 15:09:35 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36594 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229631AbjBOUJd (ORCPT ); Wed, 15 Feb 2023 15:09:33 -0500 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 17270244AC; Wed, 15 Feb 2023 12:09:32 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=WK7WV98DmqNoEol8pKIPxUYYZ9kR5i0EUBhp91OqSig=; b=i50W5RLoKp2u9dkh3sbtVQHYCW y4vps7i5Zjb9gRIuKQkcVxkB2ZDAJibcvJZTosxgjyG3hUAKblPrrtsj9vVrGxMJYZ72zUaQQqJ4g 82FddwyDg7YViumA8bA3rznbcKchmb7M6R9D0M85AF7H1oJI2+FO5QeKbxtDFjDrDyQsxU11jnDtt 64SCigt+cFtVdBTeqE2xGyWT82tDeJXTKPIHugptpPVoCpe5spakHXlKVf8K/jEPOWv8M7bRUBA4k ZEyndIZz9oMorsB32W9pFxCKwVpaXe+b/dXV6+hykrTOgSI0z5P26m7L9DqJm4/IO/S1d/sKWIXoH /zTE9Kgw==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1pSO5m-007lAU-Rl; Wed, 15 Feb 2023 20:09:26 +0000 From: "Matthew Wilcox (Oracle)" To: linux-mm@kvack.org, linux-m68k@lists.linux-m68k.org, Geert Uytterhoeven , linux-arch@vger.kernel.org Cc: "Matthew Wilcox (Oracle)" Subject: [PATCH 15/17] m68k: Implement the new page table range API Date: Wed, 15 Feb 2023 20:09:18 +0000 Message-Id: <20230215200920.1849567-2-willy@infradead.org> X-Mailer: git-send-email 2.37.1 In-Reply-To: <20230215200920.1849567-1-willy@infradead.org> References: <20230215000446.1655635-1-willy@infradead.org> <20230215200920.1849567-1-willy@infradead.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-arch@vger.kernel.org Add set_ptes(), update_mmu_cache_range(), flush_icache_pages() and flush_dcache_folio(). I'm not entirely certain that the 040/060 case in __flush_pages_to_ram() is correct. Signed-off-by: Matthew Wilcox (Oracle) --- arch/m68k/include/asm/cacheflush_mm.h | 12 ++++++++---- arch/m68k/include/asm/pgtable_mm.h | 21 ++++++++++++++++++--- arch/m68k/mm/motorola.c | 2 +- 3 files changed, 27 insertions(+), 8 deletions(-) diff --git a/arch/m68k/include/asm/cacheflush_mm.h b/arch/m68k/include/asm/cacheflush_mm.h index 1ac55e7b47f0..2244c35178d0 100644 --- a/arch/m68k/include/asm/cacheflush_mm.h +++ b/arch/m68k/include/asm/cacheflush_mm.h @@ -220,13 +220,13 @@ static inline void flush_cache_page(struct vm_area_struct *vma, unsigned long vm /* Push the page at kernel virtual address and clear the icache */ /* RZ: use cpush %bc instead of cpush %dc, cinv %ic */ -static inline void __flush_page_to_ram(void *vaddr) +static inline void __flush_pages_to_ram(void *vaddr, unsigned int nr) { if (CPU_IS_COLDFIRE) { unsigned long addr, start, end; addr = ((unsigned long) vaddr) & ~(PAGE_SIZE - 1); start = addr & ICACHE_SET_MASK; - end = (addr + PAGE_SIZE - 1) & ICACHE_SET_MASK; + end = (addr + nr * PAGE_SIZE - 1) & ICACHE_SET_MASK; if (start > end) { flush_cf_bcache(0, end); end = ICACHE_MAX_ADDR; @@ -249,10 +249,14 @@ static inline void __flush_page_to_ram(void *vaddr) } #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1 -#define flush_dcache_page(page) __flush_page_to_ram(page_address(page)) +#define flush_dcache_page(page) __flush_pages_to_ram(page_address(page), 1) +#define flush_dcache_folio(folio) \ + __flush_pages_to_ram(folio_address(folio), folio_nr_pages(folio)) #define flush_dcache_mmap_lock(mapping) do { } while (0) #define flush_dcache_mmap_unlock(mapping) do { } while (0) -#define flush_icache_page(vma, page) __flush_page_to_ram(page_address(page)) +#define flush_icache_pages(vma, page, nr) \ + __flush_pages_to_ram(page_address(page), nr) +#define flush_icache_page(vma, page) flush_icache_pages(vma, page, 1) extern void flush_icache_user_page(struct vm_area_struct *vma, struct page *page, unsigned long addr, int len); diff --git a/arch/m68k/include/asm/pgtable_mm.h b/arch/m68k/include/asm/pgtable_mm.h index b93c41fe2067..400206c17c97 100644 --- a/arch/m68k/include/asm/pgtable_mm.h +++ b/arch/m68k/include/asm/pgtable_mm.h @@ -31,8 +31,20 @@ do{ \ *(pteptr) = (pteval); \ } while(0) -#define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep,pteval) +static inline void set_ptes(struct mm_struct *mm, unsigned long addr, + pte_t *ptep, pte_t pte, unsigned int nr) +{ + for (;;) { + set_pte(ptep, pte); + if (--nr == 0) + break; + ptep++; + pte_val(pte) += PAGE_SIZE; + } +} + +#define set_pte_at(mm, addr, ptep, pte) set_ptes(mm, addr, ptep, pte, 1) /* PMD_SHIFT determines the size of the area a second-level page table can map */ #if CONFIG_PGTABLE_LEVELS == 3 @@ -138,11 +150,14 @@ extern void kernel_set_cachemode(void *addr, unsigned long size, int cmode); * tables contain all the necessary information. The Sun3 does, but * they are updated on demand. */ -static inline void update_mmu_cache(struct vm_area_struct *vma, - unsigned long address, pte_t *ptep) +static inline void update_mmu_cache_range(struct vm_area_struct *vma, + unsigned long address, pte_t *ptep, unsigned int nr) { } +#define update_mmu_cache(vma, addr, ptep) \ + update_mmu_cache_range(vma, addr, ptep, 1) + #endif /* !__ASSEMBLY__ */ /* MMU-specific headers */ diff --git a/arch/m68k/mm/motorola.c b/arch/m68k/mm/motorola.c index 2a375637e007..7784d0fcdf6e 100644 --- a/arch/m68k/mm/motorola.c +++ b/arch/m68k/mm/motorola.c @@ -81,7 +81,7 @@ static inline void cache_page(void *vaddr) void mmu_page_ctor(void *page) { - __flush_page_to_ram(page); + __flush_pages_to_ram(page, 1); flush_tlb_kernel_page(page); nocache_page(page); } -- 2.39.1