On Fri, Jul 24, 2015 at 03:57:08PM +0100, Will Deacon wrote:
> On Tue, Jul 21, 2015 at 10:59:19PM +0100, Jonathan (Zhixiong) Zhang wrote:
> > diff --git a/arch/arm64/include/asm/acpi.h b/arch/arm64/include/asm/acpi.h
> > +static inline pgprot_t arch_apei_get_mem_attribute(phys_addr_t addr)
> > +{
> > + pgprot_t prot;
> > +
> > + prot = efi_mem_attributes(addr);
> > + if (prot & EFI_MEMORY_UC)
> > + return PROT_DEVICE_nGnRnE;
> > + if (prot & EFI_MEMORY_WC)
> > + return PROT_NORMAL_NC;
>
> Can we not use pgprot_noncached and pgprot_writecombine for these two?
Actually, why do we even use pgprot_t for prot here? EFI_MEMORY_* don't
have anything to do with the arch-specific pgprot_t.
--
Catalin
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