Khalid Aziz <khalid.aziz@xxxxxxxxxx> writes: > A protection flag may not be valid across entire address space and > hence arch_validate_prot() might need the address a protection bit is > being set on to ensure it is a valid protection flag. For example, sparc > processors support memory corruption detection (as part of ADI feature) > flag on memory addresses mapped on to physical RAM but not on PFN mapped > pages or addresses mapped on to devices. This patch adds address to the > parameters being passed to arch_validate_prot() so protection bits can > be validated in the relevant context. > > Signed-off-by: Khalid Aziz <khalid.aziz@xxxxxxxxxx> > Cc: Khalid Aziz <khalid@xxxxxxxxxxxxxx> > --- > v7: > - new patch > > arch/powerpc/include/asm/mman.h | 2 +- > arch/powerpc/kernel/syscalls.c | 2 +- > include/linux/mman.h | 2 +- > mm/mprotect.c | 2 +- > 4 files changed, 4 insertions(+), 4 deletions(-) > > diff --git a/arch/powerpc/include/asm/mman.h b/arch/powerpc/include/asm/mman.h > index 30922f699341..bc74074304a2 100644 > --- a/arch/powerpc/include/asm/mman.h > +++ b/arch/powerpc/include/asm/mman.h > @@ -40,7 +40,7 @@ static inline bool arch_validate_prot(unsigned long prot) > return false; > return true; > } > -#define arch_validate_prot(prot) arch_validate_prot(prot) > +#define arch_validate_prot(prot, addr) arch_validate_prot(prot) This can be simpler, as just: #define arch_validate_prot arch_validate_prot cheers -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>
