| Message ID | 20220414062125.609297-5-anshuman.khandual@arm.com |
|---|---|
| State | New |
| Headers | show |
| Series | mm/mmap: Drop arch_vm_get_page_prot() and arch_filter_pgprot() | expand |
Le 14/04/2022 à 08:21, Anshuman Khandual a écrit : > This defines and exports a platform specific custom vm_get_page_prot() via > subscribing ARCH_HAS_VM_GET_PAGE_PROT. It localizes arch_vm_get_page_prot() > as sparc_vm_get_page_prot() and moves near vm_get_page_prot(). > > Cc: "David S. Miller" <davem@davemloft.net> > Cc: Khalid Aziz <khalid.aziz@oracle.com> > Cc: sparclinux@vger.kernel.org > Cc: linux-kernel@vger.kernel.org > Acked-by: David S. Miller <davem@davemloft.net> > Reviewed-by: Khalid Aziz <khalid.aziz@oracle.com> > Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com> Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu> > --- > arch/sparc/Kconfig | 1 + > arch/sparc/include/asm/mman.h | 6 ------ > arch/sparc/mm/init_64.c | 12 ++++++++++++ > 3 files changed, 13 insertions(+), 6 deletions(-) > > diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig > index 9200bc04701c..85b573643af6 100644 > --- a/arch/sparc/Kconfig > +++ b/arch/sparc/Kconfig > @@ -84,6 +84,7 @@ config SPARC64 > select PERF_USE_VMALLOC > select ARCH_HAVE_NMI_SAFE_CMPXCHG > select HAVE_C_RECORDMCOUNT > + select ARCH_HAS_VM_GET_PAGE_PROT > select HAVE_ARCH_AUDITSYSCALL > select ARCH_SUPPORTS_ATOMIC_RMW > select ARCH_SUPPORTS_DEBUG_PAGEALLOC > diff --git a/arch/sparc/include/asm/mman.h b/arch/sparc/include/asm/mman.h > index 274217e7ed70..af9c10c83dc5 100644 > --- a/arch/sparc/include/asm/mman.h > +++ b/arch/sparc/include/asm/mman.h > @@ -46,12 +46,6 @@ static inline unsigned long sparc_calc_vm_prot_bits(unsigned long prot) > } > } > > -#define arch_vm_get_page_prot(vm_flags) sparc_vm_get_page_prot(vm_flags) > -static inline pgprot_t sparc_vm_get_page_prot(unsigned long vm_flags) > -{ > - return (vm_flags & VM_SPARC_ADI) ? __pgprot(_PAGE_MCD_4V) : __pgprot(0); > -} > - > #define arch_validate_prot(prot, addr) sparc_validate_prot(prot, addr) > static inline int sparc_validate_prot(unsigned long prot, unsigned long addr) > { > diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c > index 8b1911591581..f6174df2d5af 100644 > --- a/arch/sparc/mm/init_64.c > +++ b/arch/sparc/mm/init_64.c > @@ -3184,3 +3184,15 @@ void copy_highpage(struct page *to, struct page *from) > } > } > EXPORT_SYMBOL(copy_highpage); > + > +pgprot_t vm_get_page_prot(unsigned long vm_flags) > +{ > + unsigned long prot = pgprot_val(protection_map[vm_flags & > + (VM_READ|VM_WRITE|VM_EXEC|VM_SHARED)]); > + > + if (vm_flags & VM_SPARC_ADI) > + prot |= _PAGE_MCD_4V; > + > + return __pgprot(prot); > +} > +EXPORT_SYMBOL(vm_get_page_prot);
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig index 9200bc04701c..85b573643af6 100644 --- a/arch/sparc/Kconfig +++ b/arch/sparc/Kconfig @@ -84,6 +84,7 @@ config SPARC64 select PERF_USE_VMALLOC select ARCH_HAVE_NMI_SAFE_CMPXCHG select HAVE_C_RECORDMCOUNT + select ARCH_HAS_VM_GET_PAGE_PROT select HAVE_ARCH_AUDITSYSCALL select ARCH_SUPPORTS_ATOMIC_RMW select ARCH_SUPPORTS_DEBUG_PAGEALLOC diff --git a/arch/sparc/include/asm/mman.h b/arch/sparc/include/asm/mman.h index 274217e7ed70..af9c10c83dc5 100644 --- a/arch/sparc/include/asm/mman.h +++ b/arch/sparc/include/asm/mman.h @@ -46,12 +46,6 @@ static inline unsigned long sparc_calc_vm_prot_bits(unsigned long prot) } } -#define arch_vm_get_page_prot(vm_flags) sparc_vm_get_page_prot(vm_flags) -static inline pgprot_t sparc_vm_get_page_prot(unsigned long vm_flags) -{ - return (vm_flags & VM_SPARC_ADI) ? __pgprot(_PAGE_MCD_4V) : __pgprot(0); -} - #define arch_validate_prot(prot, addr) sparc_validate_prot(prot, addr) static inline int sparc_validate_prot(unsigned long prot, unsigned long addr) { diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c index 8b1911591581..f6174df2d5af 100644 --- a/arch/sparc/mm/init_64.c +++ b/arch/sparc/mm/init_64.c @@ -3184,3 +3184,15 @@ void copy_highpage(struct page *to, struct page *from) } } EXPORT_SYMBOL(copy_highpage); + +pgprot_t vm_get_page_prot(unsigned long vm_flags) +{ + unsigned long prot = pgprot_val(protection_map[vm_flags & + (VM_READ|VM_WRITE|VM_EXEC|VM_SHARED)]); + + if (vm_flags & VM_SPARC_ADI) + prot |= _PAGE_MCD_4V; + + return __pgprot(prot); +} +EXPORT_SYMBOL(vm_get_page_prot);