Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751925AbaDRH7Y (ORCPT ); Fri, 18 Apr 2014 03:59:24 -0400 Received: from mailout2.samsung.com ([203.254.224.25]:13878 "EHLO mailout2.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751601AbaDRH7J (ORCPT ); Fri, 18 Apr 2014 03:59:09 -0400 X-AuditID: cbfee68d-b7fcd6d00000315b-26-5350db4bb7b5 From: Jungseok Lee To: linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, Catalin.Marinas@arm.com, Marc Zyngier , Christoffer Dall Cc: linux-kernel@vger.kernel.org, linux-samsung-soc , steve.capper@linaro.org, sungjinn.chung@samsung.com, Arnd Bergmann , kgene.kim@samsung.com, ilho215.lee@samsung.com Subject: [PATCH v3 2/7] arm64: Decouple page size from level of translation tables Date: Fri, 18 Apr 2014 16:59:07 +0900 Message-id: <000301cf5adc$1309d470$391d7d50$@samsung.com> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 7bit X-Mailer: Microsoft Outlook 14.0 Thread-index: Ac9a1H+Goz3LrREMRiqRIL/QFCA9dA== Content-language: ko X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrLIsWRmVeSWpSXmKPExsVy+t8zQ13v2wHBBmt2G1v8nXSM3eL9sh5G ixev/zFaHP23kNGid8FVNouPp46zW2x6fI3V4vKuOWwWM87vY7L4e+cfm8WKecvYLD7MWMno wOOxZt4aRo/fvyYxety5tofN4/ymNcwem5fUe/RtWcXo8XmTXAB7FJdNSmpOZllqkb5dAlfG 4+X/GQse6lS8nbWLvYGxV7WLkYNDQsBE4uPOzC5GTiBTTOLCvfVsILaQwDJGiUvdmhBxE4nW U1tZuxi5gOKLGCV+vJnNBOH8ASravYcdpIpNQFPi0d0edpCEiMAORonJaxeBtTALPGSU+Pl2 PzNIlbBAiMSm5f1gO1gEVCWOH73NBGLzClhKfHp/hQXCFpT4MfkemM0soCWxfudxJghbXmLz mrfMEDcpSOw4+5oRxBYR0JOYvGAnK0SNiMS+F+8YQRZLCHRySGzf8YYRYpmAxLfJh1ggfpaV 2HQAao6kxMEVN1gmMIrNQrJ6FpLVs5CsnoVkxQJGllWMoqkFyQXFSelFhnrFibnFpXnpesn5 uZsYIVHdu4Px9gHrQ4zJQOsnMkuJJucDk0JeSbyhsZmRhamJqbGRuaUZacJK4rxJD5OChATS E0tSs1NTC1KL4otKc1KLDzEycXBKNTDGm589/JB125y8WCWWSNYPSkvtfdNaxG5u9uW90FJX FrDh5bkPkx71XNENmFuVcflGTMCBe/EqRjb+J1qLz6xMuCHCfj3omiKrwpf763+JJmZNO1Kt IlVzRnOWree9VJtFj+cuZuFnedn423ym6J3Q2Ymbl3fUvb00b852b+0fPX2lt7aYrlVUYinO SDTUYi4qTgQAvBL3FQADAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrDKsWRmVeSWpSXmKPExsVy+t9jAV3v2wHBBvfO6Fr8nXSM3eL9sh5G ixev/zFaHP23kNGid8FVNouPp46zW2x6fI3V4vKuOWwWM87vY7L4e+cfm8WKecvYLD7MWMno wOOxZt4aRo/fvyYxety5tofN4/ymNcwem5fUe/RtWcXo8XmTXAB7VAOjTUZqYkpqkUJqXnJ+ SmZeuq2Sd3C8c7ypmYGhrqGlhbmSQl5ibqqtkotPgK5bZg7QpUoKZYk5pUChgMTiYiV9O0wT QkPcdC1gGiN0fUOC4HqMDNBAwjrGjMfL/zMWPNSpeDtrF3sDY69qFyMnh4SAiUTrqa2sELaY xIV769m6GLk4hAQWMUr8eDObCcL5wyhxafcedpAqNgFNiUd3e9hBEiICOxglJq9dxAriMAs8 ZJT4+XY/M0iVsECIxKbl/WwgNouAqsTxo7eZQGxeAUuJT++vsEDYghI/Jt8Ds5kFtCTW7zzO BGHLS2xe85YZ4iYFiR1nXzOC2CICehKTF+xkhagRkdj34h3jBEaBWUhGzUIyahaSUbOQtCxg ZFnFKJpakFxQnJSea6hXnJhbXJqXrpecn7uJEZw2nkntYFzZYHGIUYCDUYmHV0AvIFiINbGs uDL3EKMEB7OSCK9yKVCINyWxsiq1KD++qDQntfgQYzLQpxOZpUST84EpLa8k3tDYxMzI0sjM wsjE3Jw0YSVx3gOt1oFCAumJJanZqakFqUUwW5g4OKUaGNUmawd4r88IWXnh2ea630oLiwR2 emyXjRI5VyJ9vv7oviOrGULVSlOZ0wK3X7huWvc3aeobvXVfFO1c9kXEqYTHWF+/F3Jj9uoH M5f4FRyfLG5+zCJFTahmclKzuZgN49flz/SZlHL3vt4g0ZjzP1PMsfDmucnFBg+VNhTm3ww1 mHv6xMO3NUosxRmJhlrMRcWJADRIoTpfAwAA DLP-Filter: Pass X-MTR: 20000000000000000@CPGS X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch separates page size from level of translation tables in configuration. It facilitates introduction of different options, such as 4KB + 4 levels, 16KB + 4 levels and 64KB + 3 levels, easily. Signed-off-by: Jungseok Lee Reviewed-by: Sungjinn Chung --- arch/arm64/Kconfig | 36 +++++++++++++++++++++++++++++++- arch/arm64/include/asm/page.h | 2 +- arch/arm64/include/asm/pgalloc.h | 4 ++-- arch/arm64/include/asm/pgtable-hwdef.h | 2 +- arch/arm64/include/asm/pgtable.h | 8 +++---- arch/arm64/include/asm/tlb.h | 2 +- 6 files changed, 44 insertions(+), 10 deletions(-) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index e6e4d37..1a2faf9 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -144,14 +144,48 @@ endmenu menu "Kernel Features" +choice + prompt "Page size" + default ARM64_4K_PAGES + help + Allows page size. + +config ARM64_4K_PAGES + bool "4KB" + help + This feature enables 4KB pages support. + config ARM64_64K_PAGES - bool "Enable 64KB pages support" + bool "64KB" help This feature enables 64KB pages support (4KB by default) allowing only two levels of page tables and faster TLB look-up. AArch32 emulation is not available when this feature is enabled. +endchoice + +choice + prompt "Level of translation tables" + default ARM64_3_LEVELS if ARM64_4K_PAGES + default ARM64_2_LEVELS if ARM64_64K_PAGES + help + Allows level of translation tables. + +config ARM64_2_LEVELS + bool "2 level" + depends on ARM64_64K_PAGES + help + This feature enables 2 levels of translation tables. + +config ARM64_3_LEVELS + bool "3 level" + depends on ARM64_4K_PAGES + help + This feature enables 3 levels of translation tables. + +endchoice + config CPU_BIG_ENDIAN bool "Build big-endian kernel" help diff --git a/arch/arm64/include/asm/page.h b/arch/arm64/include/asm/page.h index 46bf666..268e53d 100644 --- a/arch/arm64/include/asm/page.h +++ b/arch/arm64/include/asm/page.h @@ -33,7 +33,7 @@ #ifndef __ASSEMBLY__ -#ifdef CONFIG_ARM64_64K_PAGES +#ifdef CONFIG_ARM64_2_LEVELS #include #else #include diff --git a/arch/arm64/include/asm/pgalloc.h b/arch/arm64/include/asm/pgalloc.h index 9bea6e7..4829837 100644 --- a/arch/arm64/include/asm/pgalloc.h +++ b/arch/arm64/include/asm/pgalloc.h @@ -26,7 +26,7 @@ #define check_pgt_cache() do { } while (0) -#ifndef CONFIG_ARM64_64K_PAGES +#ifndef CONFIG_ARM64_2_LEVELS static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr) { @@ -44,7 +44,7 @@ static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) set_pud(pud, __pud(__pa(pmd) | PMD_TYPE_TABLE)); } -#endif /* CONFIG_ARM64_64K_PAGES */ +#endif /* CONFIG_ARM64_2_LEVELS */ extern pgd_t *pgd_alloc(struct mm_struct *mm); extern void pgd_free(struct mm_struct *mm, pgd_t *pgd); diff --git a/arch/arm64/include/asm/pgtable-hwdef.h b/arch/arm64/include/asm/pgtable-hwdef.h index 5fc8a66..9cd86c6 100644 --- a/arch/arm64/include/asm/pgtable-hwdef.h +++ b/arch/arm64/include/asm/pgtable-hwdef.h @@ -16,7 +16,7 @@ #ifndef __ASM_PGTABLE_HWDEF_H #define __ASM_PGTABLE_HWDEF_H -#ifdef CONFIG_ARM64_64K_PAGES +#ifdef CONFIG_ARM64_2_LEVELS #include #else #include diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h index 90c811f..a64ce5e 100644 --- a/arch/arm64/include/asm/pgtable.h +++ b/arch/arm64/include/asm/pgtable.h @@ -47,7 +47,7 @@ extern void __pmd_error(const char *file, int line, unsigned long val); extern void __pgd_error(const char *file, int line, unsigned long val); #define pte_ERROR(pte) __pte_error(__FILE__, __LINE__, pte_val(pte)) -#ifndef CONFIG_ARM64_64K_PAGES +#ifndef CONFIG_ARM64_2_LEVELS #define pmd_ERROR(pmd) __pmd_error(__FILE__, __LINE__, pmd_val(pmd)) #endif #define pgd_ERROR(pgd) __pgd_error(__FILE__, __LINE__, pgd_val(pgd)) @@ -320,7 +320,7 @@ static inline pte_t *pmd_page_vaddr(pmd_t pmd) */ #define mk_pte(page,prot) pfn_pte(page_to_pfn(page),prot) -#ifndef CONFIG_ARM64_64K_PAGES +#ifndef CONFIG_ARM64_2_LEVELS #define pud_none(pud) (!pud_val(pud)) #define pud_bad(pud) (!(pud_val(pud) & 2)) @@ -342,7 +342,7 @@ static inline pmd_t *pud_page_vaddr(pud_t pud) return __va(pud_val(pud) & PHYS_MASK & (s32)PAGE_MASK); } -#endif /* CONFIG_ARM64_64K_PAGES */ +#endif /* CONFIG_ARM64_2_LEVELS */ /* to find an entry in a page-table-directory */ #define pgd_index(addr) (((addr) >> PGDIR_SHIFT) & (PTRS_PER_PGD - 1)) @@ -353,7 +353,7 @@ static inline pmd_t *pud_page_vaddr(pud_t pud) #define pgd_offset_k(addr) pgd_offset(&init_mm, addr) /* Find an entry in the second-level page table.. */ -#ifndef CONFIG_ARM64_64K_PAGES +#ifndef CONFIG_ARM64_2_LEVELS #define pmd_index(addr) (((addr) >> PMD_SHIFT) & (PTRS_PER_PMD - 1)) static inline pmd_t *pmd_offset(pud_t *pud, unsigned long addr) { diff --git a/arch/arm64/include/asm/tlb.h b/arch/arm64/include/asm/tlb.h index 72cadf5..df378b2 100644 --- a/arch/arm64/include/asm/tlb.h +++ b/arch/arm64/include/asm/tlb.h @@ -90,7 +90,7 @@ static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t pte, tlb_remove_page(tlb, pte); } -#ifndef CONFIG_ARM64_64K_PAGES +#ifndef CONFIG_ARM64_2_LEVELS static inline void __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmdp, unsigned long addr) { -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/