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| author | Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2016-04-29 13:26:21 (GMT) |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2016-05-11 11:53:53 (GMT) |
| commit | d6a9996e84ac4beb7713e9485f4563e100a9b03e (patch) | |
| tree | 58f648711d8a8fa0cc02a47ad19b5e81ceebc8a6 /arch/powerpc/include/asm/book3s/64/pgtable.h | |
| parent | 4dfb88ca9b66690d21030ccacc1cca73db90655e (diff) | |
| download | linux-d6a9996e84ac4beb7713e9485f4563e100a9b03e.tar.xz | |
powerpc/mm: vmalloc abstraction in preparation for radix
The vmalloc range differs between hash and radix config. Hence make
VMALLOC_START and related constants a variable which will be runtime
initialized depending on whether hash or radix mode is active.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
[mpe: Fix missing init of ioremap_bot in pgtable_64.c for ppc64e]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm/book3s/64/pgtable.h')
| -rw-r--r-- | arch/powerpc/include/asm/book3s/64/pgtable.h | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/arch/powerpc/include/asm/book3s/64/pgtable.h b/arch/powerpc/include/asm/book3s/64/pgtable.h index 32a9756..f5628f9 100644 --- a/arch/powerpc/include/asm/book3s/64/pgtable.h +++ b/arch/powerpc/include/asm/book3s/64/pgtable.h @@ -208,6 +208,18 @@ extern unsigned long __pgd_val_bits; #define PUD_MASKED_BITS 0xc0000000000000ffUL /* Bits to mask out from a PGD to get to the PUD page */ #define PGD_MASKED_BITS 0xc0000000000000ffUL + +extern unsigned long __vmalloc_start; +extern unsigned long __vmalloc_end; +#define VMALLOC_START __vmalloc_start +#define VMALLOC_END __vmalloc_end + +extern unsigned long __kernel_virt_start; +extern unsigned long __kernel_virt_size; +#define KERN_VIRT_START __kernel_virt_start +#define KERN_VIRT_SIZE __kernel_virt_size +extern struct page *vmemmap; +extern unsigned long ioremap_bot; #endif /* __ASSEMBLY__ */ #include <asm/book3s/64/hash.h> @@ -220,7 +232,6 @@ extern unsigned long __pgd_val_bits; #endif #include <asm/barrier.h> - /* * The second half of the kernel virtual space is used for IO mappings, * it's itself carved into the PIO region (ISA and PHB IO space) and @@ -239,8 +250,6 @@ extern unsigned long __pgd_val_bits; #define IOREMAP_BASE (PHB_IO_END) #define IOREMAP_END (KERN_VIRT_START + KERN_VIRT_SIZE) -#define vmemmap ((struct page *)VMEMMAP_BASE) - /* Advertise special mapping type for AGP */ #define HAVE_PAGE_AGP |