From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mike Rapoport Date: Tue, 14 Apr 2020 15:34:48 +0000 Subject: [PATCH v4 07/14] openrisc: add support for folded p4d page tables Message-Id: <20200414153455.21744-8-rppt@kernel.org> List-Id: References: <20200414153455.21744-1-rppt@kernel.org> In-Reply-To: <20200414153455.21744-1-rppt@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Andrew Morton Cc: Rich Felker , linux-ia64@vger.kernel.org, Geert Uytterhoeven , linux-sh@vger.kernel.org, Benjamin Herrenschmidt , linux-mm@kvack.org, Paul Mackerras , linux-hexagon@vger.kernel.org, Will Deacon , kvmarm@lists.cs.columbia.edu, Jonas Bonn , linux-arch@vger.kernel.org, Brian Cain , Marc Zyngier , Russell King , Ley Foon Tan , Mike Rapoport , Catalin Marinas , uclinux-h8-devel@lists.sourceforge.jp, Fenghua Yu , Arnd Bergmann , kvm-ppc@vger.kernel.org, Stefan Kristiansson , openrisc@lists.librecores.org, Stafford Horne , Guan Xuetao , linux-arm-kernel@lists.infradead.org, Christophe Leroy , Tony Luck , Yoshinori Sato , linux-kernel@vger.kernel.org, Michael Ellerman , nios2-dev@lists.rocketboards.org, linuxppc-dev@lists.ozlabs.org, Mike Rapoport From: Mike Rapoport Implement primitives necessary for the 4th level folding, add walks of p4d level where appropriate and remove usage of __ARCH_USE_5LEVEL_HACK. Signed-off-by: Mike Rapoport --- arch/openrisc/include/asm/pgtable.h | 1 - arch/openrisc/mm/fault.c | 10 ++++++++-- arch/openrisc/mm/init.c | 4 +++- 3 files changed, 11 insertions(+), 4 deletions(-) diff --git a/arch/openrisc/include/asm/pgtable.h b/arch/openrisc/include/asm/pgtable.h index 7f3fb9ceb083..219979e57790 100644 --- a/arch/openrisc/include/asm/pgtable.h +++ b/arch/openrisc/include/asm/pgtable.h @@ -21,7 +21,6 @@ #ifndef __ASM_OPENRISC_PGTABLE_H #define __ASM_OPENRISC_PGTABLE_H -#define __ARCH_USE_5LEVEL_HACK #include #ifndef __ASSEMBLY__ diff --git a/arch/openrisc/mm/fault.c b/arch/openrisc/mm/fault.c index 8af1cc78c4fb..6e0a11ac4c00 100644 --- a/arch/openrisc/mm/fault.c +++ b/arch/openrisc/mm/fault.c @@ -295,6 +295,7 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long address, int offset = pgd_index(address); pgd_t *pgd, *pgd_k; + p4d_t *p4d, *p4d_k; pud_t *pud, *pud_k; pmd_t *pmd, *pmd_k; pte_t *pte_k; @@ -321,8 +322,13 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long address, * it exists. */ - pud = pud_offset(pgd, address); - pud_k = pud_offset(pgd_k, address); + p4d = p4d_offset(pgd, address); + p4d_k = p4d_offset(pgd_k, address); + if (!p4d_present(*p4d_k)) + goto no_context; + + pud = pud_offset(p4d, address); + pud_k = pud_offset(p4d_k, address); if (!pud_present(*pud_k)) goto no_context; diff --git a/arch/openrisc/mm/init.c b/arch/openrisc/mm/init.c index 1f87b524db78..2536aeae0975 100644 --- a/arch/openrisc/mm/init.c +++ b/arch/openrisc/mm/init.c @@ -71,6 +71,7 @@ static void __init map_ram(void) unsigned long v, p, e; pgprot_t prot; pgd_t *pge; + p4d_t *p4e; pud_t *pue; pmd_t *pme; pte_t *pte; @@ -90,7 +91,8 @@ static void __init map_ram(void) while (p < e) { int j; - pue = pud_offset(pge, v); + p4e = p4d_offset(pge, v); + pue = pud_offset(p4e, v); pme = pmd_offset(pue, v); if ((u32) pue != (u32) pge || (u32) pme != (u32) pge) { -- 2.25.1 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 X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id AB463C2BA19 for ; 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a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586878577; bh=xkbNNpqjOY/2hGZwH/WwObtOMNn+18cxwnAyoqrX2sQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=fYuwW1N4wU8UulPGMSdU1k18xfJjLF+VTkBTz0wz2zq1KXk4bCfdtaIGlcZYUkV5g LoeXM5qgNpTh79ZZwbifwgfiMDrkgYYjl3WYl1aX/6D+HS6LPehPEcx4Ch0WoIjU36 DII+TLueqJVKhok5+C4z89YwXoPlqRNjWi8olru0= From: Mike Rapoport To: Andrew Morton Subject: [PATCH v4 07/14] openrisc: add support for folded p4d page tables Date: Tue, 14 Apr 2020 18:34:48 +0300 Message-Id: <20200414153455.21744-8-rppt@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200414153455.21744-1-rppt@kernel.org> References: <20200414153455.21744-1-rppt@kernel.org> MIME-Version: 1.0 Cc: Rich Felker , linux-ia64@vger.kernel.org, Geert Uytterhoeven , linux-sh@vger.kernel.org, Benjamin Herrenschmidt , linux-mm@kvack.org, Paul Mackerras , linux-hexagon@vger.kernel.org, Will Deacon , kvmarm@lists.cs.columbia.edu, Jonas Bonn , linux-arch@vger.kernel.org, Brian Cain , Marc Zyngier , Russell King , Ley Foon Tan , Mike Rapoport , Catalin Marinas , uclinux-h8-devel@lists.sourceforge.jp, Fenghua Yu , Arnd Bergmann , kvm-ppc@vger.kernel.org, Stefan Kristiansson , openrisc@lists.librecores.org, Stafford Horne , Guan Xuetao , linux-arm-kernel@lists.infradead.org, Christophe Leroy , Tony Luck , Yoshinori Sato , linux-kernel@vger.kernel.org, Michael Ellerman , nios2-dev@lists.rocketboards.org, linuxppc-dev@lists.ozlabs.org, Mike Rapoport X-BeenThere: kvmarm@lists.cs.columbia.edu X-Mailman-Version: 2.1.14 Precedence: list List-Id: Where KVM/ARM decisions are made List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu From: Mike Rapoport Implement primitives necessary for the 4th level folding, add walks of p4d level where appropriate and remove usage of __ARCH_USE_5LEVEL_HACK. Signed-off-by: Mike Rapoport --- arch/openrisc/include/asm/pgtable.h | 1 - arch/openrisc/mm/fault.c | 10 ++++++++-- arch/openrisc/mm/init.c | 4 +++- 3 files changed, 11 insertions(+), 4 deletions(-) diff --git a/arch/openrisc/include/asm/pgtable.h b/arch/openrisc/include/asm/pgtable.h index 7f3fb9ceb083..219979e57790 100644 --- a/arch/openrisc/include/asm/pgtable.h +++ b/arch/openrisc/include/asm/pgtable.h @@ -21,7 +21,6 @@ #ifndef __ASM_OPENRISC_PGTABLE_H #define __ASM_OPENRISC_PGTABLE_H -#define __ARCH_USE_5LEVEL_HACK #include #ifndef __ASSEMBLY__ diff --git a/arch/openrisc/mm/fault.c b/arch/openrisc/mm/fault.c index 8af1cc78c4fb..6e0a11ac4c00 100644 --- a/arch/openrisc/mm/fault.c +++ b/arch/openrisc/mm/fault.c @@ -295,6 +295,7 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long address, int offset = pgd_index(address); pgd_t *pgd, *pgd_k; + p4d_t *p4d, *p4d_k; pud_t *pud, *pud_k; pmd_t *pmd, *pmd_k; pte_t *pte_k; @@ -321,8 +322,13 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long address, * it exists. */ - pud = pud_offset(pgd, address); - pud_k = pud_offset(pgd_k, address); + p4d = p4d_offset(pgd, address); + p4d_k = p4d_offset(pgd_k, address); + if (!p4d_present(*p4d_k)) + goto no_context; + + pud = pud_offset(p4d, address); + pud_k = pud_offset(p4d_k, address); if (!pud_present(*pud_k)) goto no_context; diff --git a/arch/openrisc/mm/init.c b/arch/openrisc/mm/init.c index 1f87b524db78..2536aeae0975 100644 --- a/arch/openrisc/mm/init.c +++ b/arch/openrisc/mm/init.c @@ -71,6 +71,7 @@ static void __init map_ram(void) unsigned long v, p, e; pgprot_t prot; pgd_t *pge; + p4d_t *p4e; pud_t *pue; pmd_t *pme; pte_t *pte; @@ -90,7 +91,8 @@ static void __init map_ram(void) while (p < e) { int j; - pue = pud_offset(pge, v); + p4e = p4d_offset(pge, v); + pue = pud_offset(p4e, v); pme = pmd_offset(pue, v); if ((u32) pue != (u32) pge || (u32) pme != (u32) pge) { -- 2.25.1 _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mike Rapoport Subject: [PATCH v4 07/14] openrisc: add support for folded p4d page tables Date: Tue, 14 Apr 2020 18:34:48 +0300 Message-ID: <20200414153455.21744-8-rppt@kernel.org> References: <20200414153455.21744-1-rppt@kernel.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20200414153455.21744-1-rppt@kernel.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu To: Andrew Morton Cc: Rich Felker , linux-ia64@vger.kernel.org, Geert Uytterhoeven , linux-sh@vger.kernel.org, Benjamin Herrenschmidt , linux-mm@kvack.org, Paul Mackerras , linux-hexagon@vger.kernel.org, Will Deacon , kvmarm@lists.cs.columbia.edu, Jonas Bonn , linux-arch@vger.kernel.org, Brian Cain , Marc Zyngier , Russell King , Ley Foon Tan , Mike Rapoport , Catalin Marinas , uclinux-h8-devel@lists.sourceforge.jp, Fenghua Yu , Arnd Bergmann , kvm-ppc@vger.kernel.org, Stefan Kristiansson , openrisc@lists.librecores.org, Stafford Horne , Guan Xuetao List-Id: linux-arch.vger.kernel.org From: Mike Rapoport Implement primitives necessary for the 4th level folding, add walks of p4d level where appropriate and remove usage of __ARCH_USE_5LEVEL_HACK. Signed-off-by: Mike Rapoport --- arch/openrisc/include/asm/pgtable.h | 1 - arch/openrisc/mm/fault.c | 10 ++++++++-- arch/openrisc/mm/init.c | 4 +++- 3 files changed, 11 insertions(+), 4 deletions(-) diff --git a/arch/openrisc/include/asm/pgtable.h b/arch/openrisc/include/asm/pgtable.h index 7f3fb9ceb083..219979e57790 100644 --- a/arch/openrisc/include/asm/pgtable.h +++ b/arch/openrisc/include/asm/pgtable.h @@ -21,7 +21,6 @@ #ifndef __ASM_OPENRISC_PGTABLE_H #define __ASM_OPENRISC_PGTABLE_H -#define __ARCH_USE_5LEVEL_HACK #include #ifndef __ASSEMBLY__ diff --git a/arch/openrisc/mm/fault.c b/arch/openrisc/mm/fault.c index 8af1cc78c4fb..6e0a11ac4c00 100644 --- a/arch/openrisc/mm/fault.c +++ b/arch/openrisc/mm/fault.c @@ -295,6 +295,7 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long address, int offset = pgd_index(address); pgd_t *pgd, *pgd_k; + p4d_t *p4d, *p4d_k; pud_t *pud, *pud_k; pmd_t *pmd, *pmd_k; pte_t *pte_k; @@ -321,8 +322,13 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long address, * it exists. */ - pud = pud_offset(pgd, address); - pud_k = pud_offset(pgd_k, address); + p4d = p4d_offset(pgd, address); + p4d_k = p4d_offset(pgd_k, address); + if (!p4d_present(*p4d_k)) + goto no_context; + + pud = pud_offset(p4d, address); + pud_k = pud_offset(p4d_k, address); if (!pud_present(*pud_k)) goto no_context; diff --git a/arch/openrisc/mm/init.c b/arch/openrisc/mm/init.c index 1f87b524db78..2536aeae0975 100644 --- a/arch/openrisc/mm/init.c +++ b/arch/openrisc/mm/init.c @@ -71,6 +71,7 @@ static void __init map_ram(void) unsigned long v, p, e; pgprot_t prot; pgd_t *pge; + p4d_t *p4e; pud_t *pue; pmd_t *pme; pte_t *pte; @@ -90,7 +91,8 @@ static void __init map_ram(void) while (p < e) { int j; - pue = pud_offset(pge, v); + p4e = p4d_offset(pge, v); + pue = pud_offset(p4e, v); pme = pmd_offset(pue, v); if ((u32) pue != (u32) pge || (u32) pme != (u32) pge) { -- 2.25.1 From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mike Rapoport Date: Tue, 14 Apr 2020 18:34:48 +0300 Subject: [OpenRISC] [PATCH v4 07/14] openrisc: add support for folded p4d page tables In-Reply-To: <20200414153455.21744-1-rppt@kernel.org> References: <20200414153455.21744-1-rppt@kernel.org> Message-ID: <20200414153455.21744-8-rppt@kernel.org> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: openrisc@lists.librecores.org From: Mike Rapoport Implement primitives necessary for the 4th level folding, add walks of p4d level where appropriate and remove usage of __ARCH_USE_5LEVEL_HACK. Signed-off-by: Mike Rapoport --- arch/openrisc/include/asm/pgtable.h | 1 - arch/openrisc/mm/fault.c | 10 ++++++++-- arch/openrisc/mm/init.c | 4 +++- 3 files changed, 11 insertions(+), 4 deletions(-) diff --git a/arch/openrisc/include/asm/pgtable.h b/arch/openrisc/include/asm/pgtable.h index 7f3fb9ceb083..219979e57790 100644 --- a/arch/openrisc/include/asm/pgtable.h +++ b/arch/openrisc/include/asm/pgtable.h @@ -21,7 +21,6 @@ #ifndef __ASM_OPENRISC_PGTABLE_H #define __ASM_OPENRISC_PGTABLE_H -#define __ARCH_USE_5LEVEL_HACK #include #ifndef __ASSEMBLY__ diff --git a/arch/openrisc/mm/fault.c b/arch/openrisc/mm/fault.c index 8af1cc78c4fb..6e0a11ac4c00 100644 --- a/arch/openrisc/mm/fault.c +++ b/arch/openrisc/mm/fault.c @@ -295,6 +295,7 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long address, int offset = pgd_index(address); pgd_t *pgd, *pgd_k; + p4d_t *p4d, *p4d_k; pud_t *pud, *pud_k; pmd_t *pmd, *pmd_k; pte_t *pte_k; @@ -321,8 +322,13 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long address, * it exists. */ - pud = pud_offset(pgd, address); - pud_k = pud_offset(pgd_k, address); + p4d = p4d_offset(pgd, address); + p4d_k = p4d_offset(pgd_k, address); + if (!p4d_present(*p4d_k)) + goto no_context; + + pud = pud_offset(p4d, address); + pud_k = pud_offset(p4d_k, address); if (!pud_present(*pud_k)) goto no_context; diff --git a/arch/openrisc/mm/init.c b/arch/openrisc/mm/init.c index 1f87b524db78..2536aeae0975 100644 --- a/arch/openrisc/mm/init.c +++ b/arch/openrisc/mm/init.c @@ -71,6 +71,7 @@ static void __init map_ram(void) unsigned long v, p, e; pgprot_t prot; pgd_t *pge; + p4d_t *p4e; pud_t *pue; pmd_t *pme; pte_t *pte; @@ -90,7 +91,8 @@ static void __init map_ram(void) while (p < e) { int j; - pue = pud_offset(pge, v); + p4e = p4d_offset(pge, v); + pue = pud_offset(p4e, v); pme = pmd_offset(pue, v); if ((u32) pue != (u32) pge || (u32) pme != (u32) pge) { -- 2.25.1 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 X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 69009C2BA19 for ; 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h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=fYuwW1N4wU8UulPGMSdU1k18xfJjLF+VTkBTz0wz2zq1KXk4bCfdtaIGlcZYUkV5g LoeXM5qgNpTh79ZZwbifwgfiMDrkgYYjl3WYl1aX/6D+HS6LPehPEcx4Ch0WoIjU36 DII+TLueqJVKhok5+C4z89YwXoPlqRNjWi8olru0= From: Mike Rapoport To: Andrew Morton Subject: [PATCH v4 07/14] openrisc: add support for folded p4d page tables Date: Tue, 14 Apr 2020 18:34:48 +0300 Message-Id: <20200414153455.21744-8-rppt@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200414153455.21744-1-rppt@kernel.org> References: <20200414153455.21744-1-rppt@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Rich Felker , linux-ia64@vger.kernel.org, Geert Uytterhoeven , linux-sh@vger.kernel.org, linux-mm@kvack.org, Paul Mackerras , linux-hexagon@vger.kernel.org, Will Deacon , kvmarm@lists.cs.columbia.edu, Jonas Bonn , linux-arch@vger.kernel.org, Brian Cain , Marc Zyngier , Russell King , Ley Foon Tan , Mike Rapoport , Catalin Marinas , Julien Thierry , uclinux-h8-devel@lists.sourceforge.jp, Fenghua Yu , Arnd Bergmann , Suzuki K Poulose , kvm-ppc@vger.kernel.org, Stefan Kristiansson , openrisc@lists.librecores.org, Stafford Horne , Guan Xuetao , linux-arm-kernel@lists.infradead.org, Tony Luck , Yoshinori Sato , linux-kernel@vger.kernel.org, James Morse , nios2-dev@lists.rocketboards.org, linuxppc-dev@lists.ozlabs.org, Mike Rapoport Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" From: Mike Rapoport Implement primitives necessary for the 4th level folding, add walks of p4d level where appropriate and remove usage of __ARCH_USE_5LEVEL_HACK. Signed-off-by: Mike Rapoport --- arch/openrisc/include/asm/pgtable.h | 1 - arch/openrisc/mm/fault.c | 10 ++++++++-- arch/openrisc/mm/init.c | 4 +++- 3 files changed, 11 insertions(+), 4 deletions(-) diff --git a/arch/openrisc/include/asm/pgtable.h b/arch/openrisc/include/asm/pgtable.h index 7f3fb9ceb083..219979e57790 100644 --- a/arch/openrisc/include/asm/pgtable.h +++ b/arch/openrisc/include/asm/pgtable.h @@ -21,7 +21,6 @@ #ifndef __ASM_OPENRISC_PGTABLE_H #define __ASM_OPENRISC_PGTABLE_H -#define __ARCH_USE_5LEVEL_HACK #include #ifndef __ASSEMBLY__ diff --git a/arch/openrisc/mm/fault.c b/arch/openrisc/mm/fault.c index 8af1cc78c4fb..6e0a11ac4c00 100644 --- a/arch/openrisc/mm/fault.c +++ b/arch/openrisc/mm/fault.c @@ -295,6 +295,7 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long address, int offset = pgd_index(address); pgd_t *pgd, *pgd_k; + p4d_t *p4d, *p4d_k; pud_t *pud, *pud_k; pmd_t *pmd, *pmd_k; pte_t *pte_k; @@ -321,8 +322,13 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long address, * it exists. */ - pud = pud_offset(pgd, address); - pud_k = pud_offset(pgd_k, address); + p4d = p4d_offset(pgd, address); + p4d_k = p4d_offset(pgd_k, address); + if (!p4d_present(*p4d_k)) + goto no_context; + + pud = pud_offset(p4d, address); + pud_k = pud_offset(p4d_k, address); if (!pud_present(*pud_k)) goto no_context; diff --git a/arch/openrisc/mm/init.c b/arch/openrisc/mm/init.c index 1f87b524db78..2536aeae0975 100644 --- a/arch/openrisc/mm/init.c +++ b/arch/openrisc/mm/init.c @@ -71,6 +71,7 @@ static void __init map_ram(void) unsigned long v, p, e; pgprot_t prot; pgd_t *pge; + p4d_t *p4e; pud_t *pue; pmd_t *pme; pte_t *pte; @@ -90,7 +91,8 @@ static void __init map_ram(void) while (p < e) { int j; - pue = pud_offset(pge, v); + p4e = p4d_offset(pge, v); + pue = pud_offset(p4e, v); pme = pmd_offset(pue, v); if ((u32) pue != (u32) pge || (u32) pme != (u32) pge) { -- 2.25.1 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 X-Spam-Level: X-Spam-Status: No, score=-10.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A9A6FC352BE for ; 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Tue, 14 Apr 2020 15:36:20 +0000 Received: from aquarius.haifa.ibm.com (nesher1.haifa.il.ibm.com [195.110.40.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id EF28620768; Tue, 14 Apr 2020 15:36:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586878577; bh=xkbNNpqjOY/2hGZwH/WwObtOMNn+18cxwnAyoqrX2sQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=fYuwW1N4wU8UulPGMSdU1k18xfJjLF+VTkBTz0wz2zq1KXk4bCfdtaIGlcZYUkV5g LoeXM5qgNpTh79ZZwbifwgfiMDrkgYYjl3WYl1aX/6D+HS6LPehPEcx4Ch0WoIjU36 DII+TLueqJVKhok5+C4z89YwXoPlqRNjWi8olru0= From: Mike Rapoport To: Andrew Morton Subject: [PATCH v4 07/14] openrisc: add support for folded p4d page tables Date: Tue, 14 Apr 2020 18:34:48 +0300 Message-Id: <20200414153455.21744-8-rppt@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200414153455.21744-1-rppt@kernel.org> References: <20200414153455.21744-1-rppt@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200414_083618_181194_06F50F26 X-CRM114-Status: GOOD ( 12.25 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Rich Felker , linux-ia64@vger.kernel.org, Geert Uytterhoeven , linux-sh@vger.kernel.org, Benjamin Herrenschmidt , linux-mm@kvack.org, Paul Mackerras , linux-hexagon@vger.kernel.org, Will Deacon , kvmarm@lists.cs.columbia.edu, Jonas Bonn , linux-arch@vger.kernel.org, Brian Cain , Marc Zyngier , Russell King , Ley Foon Tan , Mike Rapoport , Catalin Marinas , Julien Thierry , uclinux-h8-devel@lists.sourceforge.jp, Fenghua Yu , Arnd Bergmann , Suzuki K Poulose , kvm-ppc@vger.kernel.org, Stefan Kristiansson , openrisc@lists.librecores.org, Stafford Horne , Guan Xuetao , linux-arm-kernel@lists.infradead.org, Christophe Leroy , Tony Luck , Yoshinori Sato , linux-kernel@vger.kernel.org, James Morse , Michael Ellerman , nios2-dev@lists.rocketboards.org, linuxppc-dev@lists.ozlabs.org, Mike Rapoport Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Mike Rapoport Implement primitives necessary for the 4th level folding, add walks of p4d level where appropriate and remove usage of __ARCH_USE_5LEVEL_HACK. Signed-off-by: Mike Rapoport --- arch/openrisc/include/asm/pgtable.h | 1 - arch/openrisc/mm/fault.c | 10 ++++++++-- arch/openrisc/mm/init.c | 4 +++- 3 files changed, 11 insertions(+), 4 deletions(-) diff --git a/arch/openrisc/include/asm/pgtable.h b/arch/openrisc/include/asm/pgtable.h index 7f3fb9ceb083..219979e57790 100644 --- a/arch/openrisc/include/asm/pgtable.h +++ b/arch/openrisc/include/asm/pgtable.h @@ -21,7 +21,6 @@ #ifndef __ASM_OPENRISC_PGTABLE_H #define __ASM_OPENRISC_PGTABLE_H -#define __ARCH_USE_5LEVEL_HACK #include #ifndef __ASSEMBLY__ diff --git a/arch/openrisc/mm/fault.c b/arch/openrisc/mm/fault.c index 8af1cc78c4fb..6e0a11ac4c00 100644 --- a/arch/openrisc/mm/fault.c +++ b/arch/openrisc/mm/fault.c @@ -295,6 +295,7 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long address, int offset = pgd_index(address); pgd_t *pgd, *pgd_k; + p4d_t *p4d, *p4d_k; pud_t *pud, *pud_k; pmd_t *pmd, *pmd_k; pte_t *pte_k; @@ -321,8 +322,13 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long address, * it exists. */ - pud = pud_offset(pgd, address); - pud_k = pud_offset(pgd_k, address); + p4d = p4d_offset(pgd, address); + p4d_k = p4d_offset(pgd_k, address); + if (!p4d_present(*p4d_k)) + goto no_context; + + pud = pud_offset(p4d, address); + pud_k = pud_offset(p4d_k, address); if (!pud_present(*pud_k)) goto no_context; diff --git a/arch/openrisc/mm/init.c b/arch/openrisc/mm/init.c index 1f87b524db78..2536aeae0975 100644 --- a/arch/openrisc/mm/init.c +++ b/arch/openrisc/mm/init.c @@ -71,6 +71,7 @@ static void __init map_ram(void) unsigned long v, p, e; pgprot_t prot; pgd_t *pge; + p4d_t *p4e; pud_t *pue; pmd_t *pme; pte_t *pte; @@ -90,7 +91,8 @@ static void __init map_ram(void) while (p < e) { int j; - pue = pud_offset(pge, v); + p4e = p4d_offset(pge, v); + pue = pud_offset(p4e, v); pme = pmd_offset(pue, v); if ((u32) pue != (u32) pge || (u32) pme != (u32) pge) { -- 2.25.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel 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 X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 50799C2BA19 for ; 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Tue, 14 Apr 2020 11:36:18 -0400 (EDT) Received: from smtpin06.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id 3C833180AD807 for ; Tue, 14 Apr 2020 15:36:18 +0000 (UTC) X-FDA: 76706862036.06.sign49_5416e7b314501 X-HE-Tag: sign49_5416e7b314501 X-Filterd-Recvd-Size: 5098 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf27.hostedemail.com (Postfix) with ESMTP for ; Tue, 14 Apr 2020 15:36:17 +0000 (UTC) Received: from aquarius.haifa.ibm.com (nesher1.haifa.il.ibm.com [195.110.40.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id EF28620768; Tue, 14 Apr 2020 15:36:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586878577; bh=xkbNNpqjOY/2hGZwH/WwObtOMNn+18cxwnAyoqrX2sQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=fYuwW1N4wU8UulPGMSdU1k18xfJjLF+VTkBTz0wz2zq1KXk4bCfdtaIGlcZYUkV5g LoeXM5qgNpTh79ZZwbifwgfiMDrkgYYjl3WYl1aX/6D+HS6LPehPEcx4Ch0WoIjU36 DII+TLueqJVKhok5+C4z89YwXoPlqRNjWi8olru0= From: Mike Rapoport To: Andrew Morton Cc: Arnd Bergmann , Benjamin Herrenschmidt , Brian Cain , Catalin Marinas , Christophe Leroy , Fenghua Yu , Geert Uytterhoeven , Guan Xuetao , James Morse , Jonas Bonn , Julien Thierry , Ley Foon Tan , Marc Zyngier , Michael Ellerman , Paul Mackerras , Rich Felker , Russell King , Stafford Horne , Stefan Kristiansson , Suzuki K Poulose , Tony Luck , Will Deacon , Yoshinori Sato , kvmarm@lists.cs.columbia.edu, kvm-ppc@vger.kernel.org, linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-hexagon@vger.kernel.org, linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org, linux-sh@vger.kernel.org, nios2-dev@lists.rocketboards.org, openrisc@lists.librecores.org, uclinux-h8-devel@lists.sourceforge.jp, Mike Rapoport , Mike Rapoport Subject: [PATCH v4 07/14] openrisc: add support for folded p4d page tables Date: Tue, 14 Apr 2020 18:34:48 +0300 Message-Id: <20200414153455.21744-8-rppt@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200414153455.21744-1-rppt@kernel.org> References: <20200414153455.21744-1-rppt@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: From: Mike Rapoport Implement primitives necessary for the 4th level folding, add walks of p4= d level where appropriate and remove usage of __ARCH_USE_5LEVEL_HACK. Signed-off-by: Mike Rapoport --- arch/openrisc/include/asm/pgtable.h | 1 - arch/openrisc/mm/fault.c | 10 ++++++++-- arch/openrisc/mm/init.c | 4 +++- 3 files changed, 11 insertions(+), 4 deletions(-) diff --git a/arch/openrisc/include/asm/pgtable.h b/arch/openrisc/include/= asm/pgtable.h index 7f3fb9ceb083..219979e57790 100644 --- a/arch/openrisc/include/asm/pgtable.h +++ b/arch/openrisc/include/asm/pgtable.h @@ -21,7 +21,6 @@ #ifndef __ASM_OPENRISC_PGTABLE_H #define __ASM_OPENRISC_PGTABLE_H =20 -#define __ARCH_USE_5LEVEL_HACK #include =20 #ifndef __ASSEMBLY__ diff --git a/arch/openrisc/mm/fault.c b/arch/openrisc/mm/fault.c index 8af1cc78c4fb..6e0a11ac4c00 100644 --- a/arch/openrisc/mm/fault.c +++ b/arch/openrisc/mm/fault.c @@ -295,6 +295,7 @@ asmlinkage void do_page_fault(struct pt_regs *regs, u= nsigned long address, =20 int offset =3D pgd_index(address); pgd_t *pgd, *pgd_k; + p4d_t *p4d, *p4d_k; pud_t *pud, *pud_k; pmd_t *pmd, *pmd_k; pte_t *pte_k; @@ -321,8 +322,13 @@ asmlinkage void do_page_fault(struct pt_regs *regs, = unsigned long address, * it exists. */ =20 - pud =3D pud_offset(pgd, address); - pud_k =3D pud_offset(pgd_k, address); + p4d =3D p4d_offset(pgd, address); + p4d_k =3D p4d_offset(pgd_k, address); + if (!p4d_present(*p4d_k)) + goto no_context; + + pud =3D pud_offset(p4d, address); + pud_k =3D pud_offset(p4d_k, address); if (!pud_present(*pud_k)) goto no_context; =20 diff --git a/arch/openrisc/mm/init.c b/arch/openrisc/mm/init.c index 1f87b524db78..2536aeae0975 100644 --- a/arch/openrisc/mm/init.c +++ b/arch/openrisc/mm/init.c @@ -71,6 +71,7 @@ static void __init map_ram(void) unsigned long v, p, e; pgprot_t prot; pgd_t *pge; + p4d_t *p4e; pud_t *pue; pmd_t *pme; pte_t *pte; @@ -90,7 +91,8 @@ static void __init map_ram(void) =20 while (p < e) { int j; - pue =3D pud_offset(pge, v); + p4e =3D p4d_offset(pge, v); + pue =3D pud_offset(p4e, v); pme =3D pmd_offset(pue, v); =20 if ((u32) pue !=3D (u32) pge || (u32) pme !=3D (u32) pge) { --=20 2.25.1