From: Nicholas Piggin <npiggin@gmail.com> To: linux-mm@kvack.org, Andrew Morton <akpm@linux-foundation.org> Cc: Nicholas Piggin <npiggin@gmail.com>, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, Zefan Li <lizefan@huawei.com>, Jonathan Cameron <Jonathan.Cameron@Huawei.com>, Christoph Hellwig <hch@infradead.org>, Christophe Leroy <christophe.leroy@csgroup.eu>, Rick Edgecombe <rick.p.edgecombe@intel.com>, Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>, x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com> Subject: [PATCH v9 08/12] x86: inline huge vmap supported functions Date: Sat, 5 Dec 2020 16:57:21 +1000 [thread overview] Message-ID: <20201205065725.1286370-9-npiggin@gmail.com> (raw) In-Reply-To: <20201205065725.1286370-1-npiggin@gmail.com> This allows unsupported levels to be constant folded away, and so p4d_free_pud_page can be removed because it's no longer linked to. Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: x86@kernel.org Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Nicholas Piggin <npiggin@gmail.com> --- arch/x86/include/asm/vmalloc.h | 22 +++++++++++++++++++--- arch/x86/mm/ioremap.c | 19 ------------------- arch/x86/mm/pgtable.c | 13 ------------- 3 files changed, 19 insertions(+), 35 deletions(-) diff --git a/arch/x86/include/asm/vmalloc.h b/arch/x86/include/asm/vmalloc.h index 094ea2b565f3..e714b00fc0ca 100644 --- a/arch/x86/include/asm/vmalloc.h +++ b/arch/x86/include/asm/vmalloc.h @@ -1,13 +1,29 @@ #ifndef _ASM_X86_VMALLOC_H #define _ASM_X86_VMALLOC_H +#include <asm/cpufeature.h> #include <asm/page.h> #include <asm/pgtable_areas.h> #ifdef CONFIG_HAVE_ARCH_HUGE_VMAP -bool arch_vmap_p4d_supported(pgprot_t prot); -bool arch_vmap_pud_supported(pgprot_t prot); -bool arch_vmap_pmd_supported(pgprot_t prot); +static inline bool arch_vmap_p4d_supported(pgprot_t prot) +{ + return false; +} + +static inline bool arch_vmap_pud_supported(pgprot_t prot) +{ +#ifdef CONFIG_X86_64 + return boot_cpu_has(X86_FEATURE_GBPAGES); +#else + return false; +#endif +} + +static inline bool arch_vmap_pmd_supported(pgprot_t prot) +{ + return boot_cpu_has(X86_FEATURE_PSE); +} #endif #endif /* _ASM_X86_VMALLOC_H */ diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c index 762b5ff4edad..12c686c65ea9 100644 --- a/arch/x86/mm/ioremap.c +++ b/arch/x86/mm/ioremap.c @@ -481,25 +481,6 @@ void iounmap(volatile void __iomem *addr) } EXPORT_SYMBOL(iounmap); -bool arch_vmap_p4d_supported(pgprot_t prot) -{ - return false; -} - -bool arch_vmap_pud_supported(pgprot_t prot) -{ -#ifdef CONFIG_X86_64 - return boot_cpu_has(X86_FEATURE_GBPAGES); -#else - return false; -#endif -} - -bool arch_vmap_pmd_supported(pgprot_t prot) -{ - return boot_cpu_has(X86_FEATURE_PSE); -} - /* * Convert a physical pointer to a virtual kernel pointer for /dev/mem * access diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c index dfd82f51ba66..801c418ee97d 100644 --- a/arch/x86/mm/pgtable.c +++ b/arch/x86/mm/pgtable.c @@ -780,14 +780,6 @@ int pmd_clear_huge(pmd_t *pmd) return 0; } -/* - * Until we support 512GB pages, skip them in the vmap area. - */ -int p4d_free_pud_page(p4d_t *p4d, unsigned long addr) -{ - return 0; -} - #ifdef CONFIG_X86_64 /** * pud_free_pmd_page - Clear pud entry and free pmd page. @@ -859,11 +851,6 @@ int pmd_free_pte_page(pmd_t *pmd, unsigned long addr) #else /* !CONFIG_X86_64 */ -int pud_free_pmd_page(pud_t *pud, unsigned long addr) -{ - return pud_none(*pud); -} - /* * Disable free page handling on x86-PAE. This assures that ioremap() * does not update sync'd pmd entries. See vmalloc_sync_one(). -- 2.23.0
WARNING: multiple messages have this Message-ID (diff)
From: Nicholas Piggin <npiggin@gmail.com> To: linux-mm@kvack.org, Andrew Morton <akpm@linux-foundation.org> Cc: linux-arch@vger.kernel.org, "H. Peter Anvin" <hpa@zytor.com>, x86@kernel.org, linux-kernel@vger.kernel.org, Nicholas Piggin <npiggin@gmail.com>, Christoph Hellwig <hch@infradead.org>, Zefan Li <lizefan@huawei.com>, Borislav Petkov <bp@alien8.de>, Jonathan Cameron <Jonathan.Cameron@Huawei.com>, Thomas Gleixner <tglx@linutronix.de>, Rick Edgecombe <rick.p.edgecombe@intel.com>, linuxppc-dev@lists.ozlabs.org, Ingo Molnar <mingo@redhat.com> Subject: [PATCH v9 08/12] x86: inline huge vmap supported functions Date: Sat, 5 Dec 2020 16:57:21 +1000 [thread overview] Message-ID: <20201205065725.1286370-9-npiggin@gmail.com> (raw) In-Reply-To: <20201205065725.1286370-1-npiggin@gmail.com> This allows unsupported levels to be constant folded away, and so p4d_free_pud_page can be removed because it's no longer linked to. Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: x86@kernel.org Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Nicholas Piggin <npiggin@gmail.com> --- arch/x86/include/asm/vmalloc.h | 22 +++++++++++++++++++--- arch/x86/mm/ioremap.c | 19 ------------------- arch/x86/mm/pgtable.c | 13 ------------- 3 files changed, 19 insertions(+), 35 deletions(-) diff --git a/arch/x86/include/asm/vmalloc.h b/arch/x86/include/asm/vmalloc.h index 094ea2b565f3..e714b00fc0ca 100644 --- a/arch/x86/include/asm/vmalloc.h +++ b/arch/x86/include/asm/vmalloc.h @@ -1,13 +1,29 @@ #ifndef _ASM_X86_VMALLOC_H #define _ASM_X86_VMALLOC_H +#include <asm/cpufeature.h> #include <asm/page.h> #include <asm/pgtable_areas.h> #ifdef CONFIG_HAVE_ARCH_HUGE_VMAP -bool arch_vmap_p4d_supported(pgprot_t prot); -bool arch_vmap_pud_supported(pgprot_t prot); -bool arch_vmap_pmd_supported(pgprot_t prot); +static inline bool arch_vmap_p4d_supported(pgprot_t prot) +{ + return false; +} + +static inline bool arch_vmap_pud_supported(pgprot_t prot) +{ +#ifdef CONFIG_X86_64 + return boot_cpu_has(X86_FEATURE_GBPAGES); +#else + return false; +#endif +} + +static inline bool arch_vmap_pmd_supported(pgprot_t prot) +{ + return boot_cpu_has(X86_FEATURE_PSE); +} #endif #endif /* _ASM_X86_VMALLOC_H */ diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c index 762b5ff4edad..12c686c65ea9 100644 --- a/arch/x86/mm/ioremap.c +++ b/arch/x86/mm/ioremap.c @@ -481,25 +481,6 @@ void iounmap(volatile void __iomem *addr) } EXPORT_SYMBOL(iounmap); -bool arch_vmap_p4d_supported(pgprot_t prot) -{ - return false; -} - -bool arch_vmap_pud_supported(pgprot_t prot) -{ -#ifdef CONFIG_X86_64 - return boot_cpu_has(X86_FEATURE_GBPAGES); -#else - return false; -#endif -} - -bool arch_vmap_pmd_supported(pgprot_t prot) -{ - return boot_cpu_has(X86_FEATURE_PSE); -} - /* * Convert a physical pointer to a virtual kernel pointer for /dev/mem * access diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c index dfd82f51ba66..801c418ee97d 100644 --- a/arch/x86/mm/pgtable.c +++ b/arch/x86/mm/pgtable.c @@ -780,14 +780,6 @@ int pmd_clear_huge(pmd_t *pmd) return 0; } -/* - * Until we support 512GB pages, skip them in the vmap area. - */ -int p4d_free_pud_page(p4d_t *p4d, unsigned long addr) -{ - return 0; -} - #ifdef CONFIG_X86_64 /** * pud_free_pmd_page - Clear pud entry and free pmd page. @@ -859,11 +851,6 @@ int pmd_free_pte_page(pmd_t *pmd, unsigned long addr) #else /* !CONFIG_X86_64 */ -int pud_free_pmd_page(pud_t *pud, unsigned long addr) -{ - return pud_none(*pud); -} - /* * Disable free page handling on x86-PAE. This assures that ioremap() * does not update sync'd pmd entries. See vmalloc_sync_one(). -- 2.23.0
next prev parent reply other threads:[~2020-12-05 6:59 UTC|newest] Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-12-05 6:57 [PATCH v9 00/12] huge vmalloc mappings Nicholas Piggin 2020-12-05 6:57 ` Nicholas Piggin 2020-12-05 6:57 ` [PATCH v9 01/12] mm/vmalloc: fix vmalloc_to_page for huge vmap mappings Nicholas Piggin 2020-12-05 6:57 ` Nicholas Piggin 2020-12-05 6:57 ` [PATCH v9 02/12] mm: apply_to_pte_range warn and fail if a large pte is encountered Nicholas Piggin 2020-12-05 6:57 ` Nicholas Piggin 2020-12-05 6:57 ` [PATCH v9 03/12] mm/vmalloc: rename vmap_*_range vmap_pages_*_range Nicholas Piggin 2020-12-05 6:57 ` Nicholas Piggin 2020-12-05 6:57 ` [PATCH v9 04/12] mm/ioremap: rename ioremap_*_range to vmap_*_range Nicholas Piggin 2020-12-05 6:57 ` Nicholas Piggin 2020-12-05 6:57 ` [PATCH v9 05/12] mm: HUGE_VMAP arch support cleanup Nicholas Piggin 2020-12-05 6:57 ` Nicholas Piggin 2020-12-05 6:57 ` Nicholas Piggin 2021-01-04 12:33 ` Ding Tianhong 2021-01-04 12:33 ` Ding Tianhong 2021-01-04 12:33 ` Ding Tianhong 2021-01-24 7:43 ` Nicholas Piggin 2021-01-24 7:43 ` Nicholas Piggin 2021-01-24 7:43 ` Nicholas Piggin 2020-12-05 6:57 ` [PATCH v9 06/12] powerpc: inline huge vmap supported functions Nicholas Piggin 2020-12-05 6:57 ` Nicholas Piggin 2020-12-05 6:57 ` [PATCH v9 07/12] arm64: " Nicholas Piggin 2020-12-05 6:57 ` Nicholas Piggin 2020-12-05 6:57 ` Nicholas Piggin 2020-12-05 6:57 ` Nicholas Piggin [this message] 2020-12-05 6:57 ` [PATCH v9 08/12] x86: " Nicholas Piggin 2020-12-05 6:57 ` [PATCH v9 09/12] mm: Move vmap_range from mm/ioremap.c to mm/vmalloc.c Nicholas Piggin 2020-12-05 6:57 ` Nicholas Piggin 2020-12-05 6:57 ` [PATCH v9 10/12] mm/vmalloc: add vmap_range_noflush variant Nicholas Piggin 2020-12-05 6:57 ` Nicholas Piggin 2020-12-05 6:57 ` [PATCH v9 11/12] mm/vmalloc: Hugepage vmalloc mappings Nicholas Piggin 2020-12-05 6:57 ` Nicholas Piggin 2020-12-25 7:58 ` Ding Tianhong 2020-12-25 7:58 ` Ding Tianhong 2020-12-05 6:57 ` [PATCH v9 12/12] powerpc/64s/radix: Enable huge " Nicholas Piggin 2020-12-05 6:57 ` Nicholas Piggin
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