From: Oliver O'Halloran <oohall@gmail.com> To: linuxppc-dev@lists.ozlabs.org Cc: bsingharora@gmail.com, "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>, arbab@linux.vnet.ibm.com, linux-nvdimm@lists.01.org Subject: [PATCH 3/9] powerpc/mm: Add _PAGE_DEVMAP for ppc64. Date: Wed, 12 Apr 2017 03:42:27 +1000 [thread overview] Message-ID: <20170411174233.21902-4-oohall@gmail.com> (raw) In-Reply-To: <20170411174233.21902-1-oohall@gmail.com> From: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com> Add a _PAGE_DEVMAP bit for PTE and DAX PMD entires. PowerPC doesn't currently support PUD faults so we haven't extended it to the PUD level. Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Oliver O'Halloran <oohall@gmail.com> --- arch/powerpc/include/asm/book3s/64/pgtable.h | 37 +++++++++++++++++++++++++++- 1 file changed, 36 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/include/asm/book3s/64/pgtable.h b/arch/powerpc/include/asm/book3s/64/pgtable.h index fb72ff6b98e6..b5fc6337649e 100644 --- a/arch/powerpc/include/asm/book3s/64/pgtable.h +++ b/arch/powerpc/include/asm/book3s/64/pgtable.h @@ -78,6 +78,9 @@ #define _PAGE_SOFT_DIRTY _RPAGE_SW3 /* software: software dirty tracking */ #define _PAGE_SPECIAL _RPAGE_SW2 /* software: special page */ +#define _PAGE_DEVMAP _RPAGE_SW1 +#define __HAVE_ARCH_PTE_DEVMAP + /* * Drivers request for cache inhibited pte mapping using _PAGE_NO_CACHE * Instead of fixing all of them, add an alternate define which @@ -602,6 +605,16 @@ static inline pte_t pte_mkhuge(pte_t pte) return pte; } +static inline pte_t pte_mkdevmap(pte_t pte) +{ + return __pte(pte_val(pte) | _PAGE_SPECIAL|_PAGE_DEVMAP); +} + +static inline int pte_devmap(pte_t pte) +{ + return !!(pte_raw(pte) & cpu_to_be64(_PAGE_DEVMAP)); +} + static inline pte_t pte_modify(pte_t pte, pgprot_t newprot) { /* FIXME!! check whether this need to be a conditional */ @@ -966,6 +979,9 @@ static inline pte_t *pmdp_ptep(pmd_t *pmd) #define pmd_mk_savedwrite(pmd) pte_pmd(pte_mk_savedwrite(pmd_pte(pmd))) #define pmd_clear_savedwrite(pmd) pte_pmd(pte_clear_savedwrite(pmd_pte(pmd))) +#define pud_pfn(...) (0) +#define pgd_pfn(...) (0) + #ifdef CONFIG_HAVE_ARCH_SOFT_DIRTY #define pmd_soft_dirty(pmd) pte_soft_dirty(pmd_pte(pmd)) #define pmd_mksoft_dirty(pmd) pte_pmd(pte_mksoft_dirty(pmd_pte(pmd))) @@ -1140,7 +1156,6 @@ static inline int pmd_move_must_withdraw(struct spinlock *new_pmd_ptl, return true; } - #define arch_needs_pgtable_deposit arch_needs_pgtable_deposit static inline bool arch_needs_pgtable_deposit(void) { @@ -1149,6 +1164,26 @@ static inline bool arch_needs_pgtable_deposit(void) return true; } +static inline pmd_t pmd_mkdevmap(pmd_t pmd) +{ + return pte_pmd(pte_mkdevmap(pmd_pte(pmd))); +} + +static inline int pmd_devmap(pmd_t pmd) +{ + return pte_devmap(pmd_pte(pmd)); +} + +static inline int pud_devmap(pud_t pud) +{ + return 0; +} + +static inline int pgd_devmap(pgd_t pgd) +{ + return 0; +} + #endif /* CONFIG_TRANSPARENT_HUGEPAGE */ #endif /* __ASSEMBLY__ */ #endif /* _ASM_POWERPC_BOOK3S_64_PGTABLE_H_ */ -- 2.9.3 _______________________________________________ Linux-nvdimm mailing list Linux-nvdimm@lists.01.org https://lists.01.org/mailman/listinfo/linux-nvdimm
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From: Oliver O'Halloran <oohall@gmail.com> To: linuxppc-dev@lists.ozlabs.org Cc: arbab@linux.vnet.ibm.com, bsingharora@gmail.com, linux-nvdimm@lists.01.org, "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>, Oliver O'Halloran <oohall@gmail.com> Subject: [PATCH 3/9] powerpc/mm: Add _PAGE_DEVMAP for ppc64. Date: Wed, 12 Apr 2017 03:42:27 +1000 [thread overview] Message-ID: <20170411174233.21902-4-oohall@gmail.com> (raw) In-Reply-To: <20170411174233.21902-1-oohall@gmail.com> From: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com> Add a _PAGE_DEVMAP bit for PTE and DAX PMD entires. PowerPC doesn't currently support PUD faults so we haven't extended it to the PUD level. Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Oliver O'Halloran <oohall@gmail.com> --- arch/powerpc/include/asm/book3s/64/pgtable.h | 37 +++++++++++++++++++++++++++- 1 file changed, 36 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/include/asm/book3s/64/pgtable.h b/arch/powerpc/include/asm/book3s/64/pgtable.h index fb72ff6b98e6..b5fc6337649e 100644 --- a/arch/powerpc/include/asm/book3s/64/pgtable.h +++ b/arch/powerpc/include/asm/book3s/64/pgtable.h @@ -78,6 +78,9 @@ #define _PAGE_SOFT_DIRTY _RPAGE_SW3 /* software: software dirty tracking */ #define _PAGE_SPECIAL _RPAGE_SW2 /* software: special page */ +#define _PAGE_DEVMAP _RPAGE_SW1 +#define __HAVE_ARCH_PTE_DEVMAP + /* * Drivers request for cache inhibited pte mapping using _PAGE_NO_CACHE * Instead of fixing all of them, add an alternate define which @@ -602,6 +605,16 @@ static inline pte_t pte_mkhuge(pte_t pte) return pte; } +static inline pte_t pte_mkdevmap(pte_t pte) +{ + return __pte(pte_val(pte) | _PAGE_SPECIAL|_PAGE_DEVMAP); +} + +static inline int pte_devmap(pte_t pte) +{ + return !!(pte_raw(pte) & cpu_to_be64(_PAGE_DEVMAP)); +} + static inline pte_t pte_modify(pte_t pte, pgprot_t newprot) { /* FIXME!! check whether this need to be a conditional */ @@ -966,6 +979,9 @@ static inline pte_t *pmdp_ptep(pmd_t *pmd) #define pmd_mk_savedwrite(pmd) pte_pmd(pte_mk_savedwrite(pmd_pte(pmd))) #define pmd_clear_savedwrite(pmd) pte_pmd(pte_clear_savedwrite(pmd_pte(pmd))) +#define pud_pfn(...) (0) +#define pgd_pfn(...) (0) + #ifdef CONFIG_HAVE_ARCH_SOFT_DIRTY #define pmd_soft_dirty(pmd) pte_soft_dirty(pmd_pte(pmd)) #define pmd_mksoft_dirty(pmd) pte_pmd(pte_mksoft_dirty(pmd_pte(pmd))) @@ -1140,7 +1156,6 @@ static inline int pmd_move_must_withdraw(struct spinlock *new_pmd_ptl, return true; } - #define arch_needs_pgtable_deposit arch_needs_pgtable_deposit static inline bool arch_needs_pgtable_deposit(void) { @@ -1149,6 +1164,26 @@ static inline bool arch_needs_pgtable_deposit(void) return true; } +static inline pmd_t pmd_mkdevmap(pmd_t pmd) +{ + return pte_pmd(pte_mkdevmap(pmd_pte(pmd))); +} + +static inline int pmd_devmap(pmd_t pmd) +{ + return pte_devmap(pmd_pte(pmd)); +} + +static inline int pud_devmap(pud_t pud) +{ + return 0; +} + +static inline int pgd_devmap(pgd_t pgd) +{ + return 0; +} + #endif /* CONFIG_TRANSPARENT_HUGEPAGE */ #endif /* __ASSEMBLY__ */ #endif /* _ASM_POWERPC_BOOK3S_64_PGTABLE_H_ */ -- 2.9.3
next prev parent reply other threads:[~2017-04-11 17:43 UTC|newest] Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top 2017-04-11 17:42 ZONE_DEVICE and pmem API support for powerpc Oliver O'Halloran 2017-04-11 17:42 ` Oliver O'Halloran 2017-04-11 17:42 ` [PATCH 1/9] mm/huge_memory: Use zap_deposited_table() more Oliver O'Halloran 2017-04-11 17:42 ` Oliver O'Halloran 2017-04-11 17:42 ` Oliver O'Halloran 2017-04-12 5:44 ` Aneesh Kumar K.V 2017-04-12 5:44 ` Aneesh Kumar K.V 2017-04-18 21:35 ` David Rientjes 2017-04-18 21:35 ` David Rientjes 2017-04-11 17:42 ` [PATCH 2/9] mm/huge_memory: Deposit a pgtable for DAX PMD faults when required Oliver O'Halloran 2017-04-11 17:42 ` Oliver O'Halloran 2017-04-11 17:42 ` Oliver O'Halloran 2017-04-12 5:51 ` Aneesh Kumar K.V 2017-04-12 5:51 ` Aneesh Kumar K.V 2017-04-12 5:51 ` Aneesh Kumar K.V 2017-04-11 17:42 ` Oliver O'Halloran [this message] 2017-04-11 17:42 ` [PATCH 3/9] powerpc/mm: Add _PAGE_DEVMAP for ppc64 Oliver O'Halloran 2017-04-12 0:19 ` Stephen Rothwell 2017-04-12 0:19 ` Stephen Rothwell 2017-04-12 3:07 ` Aneesh Kumar K.V 2017-04-12 3:07 ` Aneesh Kumar K.V 2017-04-13 5:20 ` Aneesh Kumar K.V 2017-04-13 5:20 ` Aneesh Kumar K.V 2017-04-11 17:42 ` [PATCH 4/9] powerpc/mm: Reshuffle vmemmap_free() Oliver O'Halloran 2017-04-11 17:42 ` Oliver O'Halloran 2017-04-12 0:33 ` Stephen Rothwell 2017-04-12 0:33 ` Stephen Rothwell 2017-04-11 17:42 ` [PATCH 5/9] powerpc/vmemmap: Add altmap support Oliver O'Halloran 2017-04-11 17:42 ` Oliver O'Halloran 2017-04-12 0:24 ` Balbir Singh 2017-04-12 0:24 ` Balbir Singh 2017-04-11 17:42 ` [PATCH 6/9] powerpc, mm: Enable ZONE_DEVICE on powerpc Oliver O'Halloran 2017-04-11 17:42 ` Oliver O'Halloran 2017-04-12 0:25 ` Balbir Singh 2017-04-12 0:25 ` Balbir Singh 2017-04-12 0:43 ` Stephen Rothwell 2017-04-12 0:43 ` Stephen Rothwell 2017-04-12 2:03 ` Michael Ellerman 2017-04-12 2:03 ` Michael Ellerman 2017-04-11 17:42 ` [PATCH 7/9] powerpc/mm: Wire up ioremap_cache Oliver O'Halloran 2017-04-11 17:42 ` Oliver O'Halloran 2017-04-23 11:53 ` [7/9] " Michael Ellerman 2017-04-23 11:53 ` Michael Ellerman 2017-04-11 17:42 ` [PATCH 8/9] powerpc/mm: Wire up hpte_removebolted for powernv Oliver O'Halloran 2017-04-11 17:42 ` Oliver O'Halloran [not found] ` <20170411174233.21902-9-oohall-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> 2017-04-11 22:50 ` Anton Blanchard 2017-04-11 22:50 ` Anton Blanchard 2017-04-12 0:18 ` Stephen Rothwell 2017-04-12 0:18 ` Stephen Rothwell 2017-04-12 3:30 ` Rashmica Gupta 2017-04-12 3:30 ` Rashmica Gupta 2017-04-12 1:53 ` Balbir Singh 2017-04-12 1:53 ` Balbir Singh 2017-04-13 4:21 ` Oliver O'Halloran 2017-04-13 4:21 ` Oliver O'Halloran 2017-04-13 10:10 ` Michael Ellerman 2017-04-13 10:10 ` Michael Ellerman 2017-04-11 17:42 ` [PATCH 9/9] powerpc: Add pmem API support Oliver O'Halloran 2017-04-11 17:42 ` Oliver O'Halloran 2017-04-11 18:22 ` ZONE_DEVICE and pmem API support for powerpc Dan Williams 2017-04-11 18:22 ` Dan Williams 2017-04-12 9:14 ` Oliver O'Halloran 2017-04-12 9:14 ` Oliver O'Halloran 2017-04-12 1:10 ` Stephen Rothwell 2017-04-12 1:10 ` Stephen Rothwell
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