diff options
| author | Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2017-03-21 22:59:53 +0530 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2017-03-31 23:09:48 +1100 |
| commit | f5bd0fdc0c74dc4cdc5d81319441c4ef9b47cd65 (patch) | |
| tree | 6680be213f706ba5ddcdf6b9d18e4e31a6b62f49 | |
| parent | 98beda74de246520653b42147443292d9814426d (diff) | |
powerpc/mm: Cleanup bits definition between hash and radix.
Define everything based on bits present in pgtable.h. This will help in easily
identifying overlapping bits between hash/radix.
No functional change with this patch.
Reviewed-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
| -rw-r--r-- | arch/powerpc/include/asm/book3s/64/hash-64k.h | 4 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/book3s/64/hash.h | 9 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/book3s/64/pgtable.h | 10 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/book3s/64/radix.h | 6 |
4 files changed, 17 insertions, 12 deletions
diff --git a/arch/powerpc/include/asm/book3s/64/hash-64k.h b/arch/powerpc/include/asm/book3s/64/hash-64k.h index f3dd21efa2ea..b39f0b86405e 100644 --- a/arch/powerpc/include/asm/book3s/64/hash-64k.h +++ b/arch/powerpc/include/asm/book3s/64/hash-64k.h @@ -6,6 +6,10 @@ #define H_PUD_INDEX_SIZE 5 #define H_PGD_INDEX_SIZE 12 +/* + * 64k aligned address free up few of the lower bits of RPN for us + * We steal that here. For more deatils look at pte_pfn/pfn_pte() + */ #define H_PAGE_COMBO 0x00001000 /* this is a combo 4k page */ #define H_PAGE_4K_PFN 0x00002000 /* PFN is for a single 4k page */ /* diff --git a/arch/powerpc/include/asm/book3s/64/hash.h b/arch/powerpc/include/asm/book3s/64/hash.h index f7b721bbf918..ec2828b1db07 100644 --- a/arch/powerpc/include/asm/book3s/64/hash.h +++ b/arch/powerpc/include/asm/book3s/64/hash.h @@ -13,12 +13,13 @@ * We could create separate kernel read-only if we used the 3 PP bits * combinations that newer processors provide but we currently don't. */ -#define H_PAGE_BUSY 0x00800 /* software: PTE & hash are busy */ +#define H_PAGE_BUSY _RPAGE_SW1 /* software: PTE & hash are busy */ #define H_PTE_NONE_MASK _PAGE_HPTEFLAGS #define H_PAGE_F_GIX_SHIFT 57 -#define H_PAGE_F_GIX (7ul << 57) /* HPTE index within HPTEG */ -#define H_PAGE_F_SECOND (1ul << 60) /* HPTE is in 2ndary HPTEG */ -#define H_PAGE_HASHPTE (1ul << 61) /* PTE has associated HPTE */ +/* (7ul << 57) HPTE index within HPTEG */ +#define H_PAGE_F_GIX (_RPAGE_RSV2 | _RPAGE_RSV3 | _RPAGE_RSV4) +#define H_PAGE_F_SECOND _RPAGE_RSV1 /* HPTE is in 2ndary HPTEG */ +#define H_PAGE_HASHPTE _RPAGE_SW0 /* PTE has associated HPTE */ #ifdef CONFIG_PPC_64K_PAGES #include <asm/book3s/64/hash-64k.h> diff --git a/arch/powerpc/include/asm/book3s/64/pgtable.h b/arch/powerpc/include/asm/book3s/64/pgtable.h index 8f4d41936e5a..c39bc4cb9247 100644 --- a/arch/powerpc/include/asm/book3s/64/pgtable.h +++ b/arch/powerpc/include/asm/book3s/64/pgtable.h @@ -44,14 +44,8 @@ #endif #define _PAGE_SPECIAL _RPAGE_SW2 /* software: special page */ -/* - * For P9 DD1 only, we need to track whether the pte's huge. - */ -#define _PAGE_LARGE _RPAGE_RSV1 - - -#define _PAGE_PTE (1ul << 62) /* distinguishes PTEs from pointers */ -#define _PAGE_PRESENT (1ul << 63) /* pte contains a translation */ +#define _PAGE_PTE 0x4000000000000000UL /* distinguishes PTEs from pointers */ +#define _PAGE_PRESENT 0x8000000000000000UL /* pte contains a translation */ /* * Drivers request for cache inhibited pte mapping using _PAGE_NO_CACHE * Instead of fixing all of them, add an alternate define which diff --git a/arch/powerpc/include/asm/book3s/64/radix.h b/arch/powerpc/include/asm/book3s/64/radix.h index 9e0bb7cd6e22..2a2ea47a9bd2 100644 --- a/arch/powerpc/include/asm/book3s/64/radix.h +++ b/arch/powerpc/include/asm/book3s/64/radix.h @@ -11,6 +11,12 @@ #include <asm/book3s/64/radix-4k.h> #endif +/* + * For P9 DD1 only, we need to track whether the pte's huge. + */ +#define _PAGE_LARGE _RPAGE_RSV1 + + #ifndef __ASSEMBLY__ #include <asm/book3s/64/tlbflush-radix.h> #include <asm/cpu_has_feature.h> |