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31 | 31 | ||
32 | #include <arch/types.h> |
32 | #include <arch/types.h> |
33 | 33 | ||
34 | typedef __u32 asid_t; |
34 | typedef __u32 asid_t; |
35 | 35 | ||
- | 36 | /** |
|
- | 37 | * This macro eliminates the stealing branch of asid_get(). |
|
- | 38 | */ |
|
- | 39 | #define ASID_STEALING_ENABLED 0 |
|
- | 40 | ||
36 | /** Number of ia64 RIDs (Region Identifiers) per kernel ASID. */ |
41 | /** Number of ia64 RIDs (Region Identifiers) per kernel ASID. */ |
37 | #define RIDS_PER_ASID 7 |
42 | #define RIDS_PER_ASID 7 |
38 | #define RID_OVERFLOW 16777216 /* 2^24 */ |
43 | #define RID_OVERFLOW 16777216 /* 2^24 */ |
39 | 44 | ||
40 | /** |
45 | /** |
41 | * The point is to have ASID_MAX_ARCH big enough |
- | |
42 | * so that it is never reached and the ASID allocation |
46 | * This macro is needed only to compile the kernel. |
43 | * mechanism in asid_get() never resorts to stealing. |
47 | * On ia64, its value is ignored. |
44 | */ |
48 | */ |
45 | #define ASID_MAX_ARCH ((asid_t) -1) /**< This value is never reached. */ |
49 | #define ASID_MAX_ARCH 0 |
46 | 50 | ||
47 | /** |
51 | /** |
48 | * Value used to recognize the situation when all ASIDs were already allocated. |
52 | * Value used to recognize the situation when all ASIDs were already allocated. |
49 | */ |
53 | */ |
50 | #define ASID_OVERFLOW (RID_OVERFLOW/RIDS_PER_ASID) |
54 | #define ASID_OVERFLOW (RID_OVERFLOW/RIDS_PER_ASID) |