diff options
Diffstat (limited to 'arch/sparc/include/asm/mmu_64.h')
| -rw-r--r-- | arch/sparc/include/asm/mmu_64.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/sparc/include/asm/mmu_64.h b/arch/sparc/include/asm/mmu_64.h index ad4fb93508ba..7e2704c770e9 100644 --- a/arch/sparc/include/asm/mmu_64.h +++ b/arch/sparc/include/asm/mmu_64.h @@ -90,6 +90,20 @@ struct tsb_config { #define MM_NUM_TSBS 1 #endif +/* ADI tags are stored when a page is swapped out and the storage for + * tags is allocated dynamically. There is a tag storage descriptor + * associated with each set of tag storage pages. Tag storage descriptors + * are allocated dynamically. Since kernel will allocate a full page for + * each tag storage descriptor, we can store up to + * PAGE_SIZE/sizeof(tag storage descriptor) descriptors on that page. + */ +typedef struct { + unsigned long start; /* Start address for this tag storage */ + unsigned long end; /* Last address for tag storage */ + unsigned char *tags; /* Where the tags are */ + unsigned long tag_users; /* number of references to descriptor */ +} tag_storage_desc_t; + typedef struct { spinlock_t lock; unsigned long sparc64_ctx_val; @@ -98,6 +112,9 @@ typedef struct { struct tsb_config tsb_block[MM_NUM_TSBS]; struct hv_tsb_descr tsb_descr[MM_NUM_TSBS]; void *vdso; + bool adi; + tag_storage_desc_t *tag_store; + spinlock_t tag_lock; } mm_context_t; #endif /* !__ASSEMBLY__ */ |