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Merge of Wu's GSOC 09 branch (src.20090525.r4372.wu)

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Main changes:
- COW optimization for safecopy.
- safemap, a grant-based interface for sharing memory regions between processes.
- Integration with safemap and complete rework of DS, supporting new data types
  natively (labels, memory ranges, memory mapped ranges).
- For further information:
  http://wiki.minix3.org/en/SummerOfCode2009/MemoryGrants

Additional changes not included in the original Wu's branch:
- Fixed unhandled case in VM when using COW optimization for safecopy in case
  of a block that has already been shared as SMAP.
- Better interface and naming scheme for sys_saferevmap and ds_retrieve_map
  calls.
- Better input checking in syslib: check for page alignment when creating
  memory mapping grants.
- DS notifies subscribers when an entry is deleted.
- Documented the behavior of indirect grants in case of memory mapping.
- Test suite in /usr/src/test/safeperf|safecopy|safemap|ds/* reworked
  and extended.
- Minor fixes and general cleanup.
- TO-DO: Grant ids should be generated and managed the way endpoints are to make
sure grant slots are never misreused.
This commit is contained in:
Cristiano Giuffrida
2010-01-14 15:24:16 +00:00
parent da3b64d8bc
commit c5b309ff07
99 changed files with 3594 additions and 851 deletions
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13
include/unistd.h
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@@ -44,12 +44,13 @@
#define SI_PROC_TAB 2 /* copy of entire process table */
#define SI_DMAP_TAB 3 /* get device <-> driver mappings */
#define SI_MEM_ALLOC 4 /* get memory allocation data */
#define SI_DATA_STORE 5 /* get copy of data store */
#define SI_LOADINFO 6 /* get copy of load average structure */
#define SI_KPROC_TAB 7 /* copy of kernel process table */
#define SI_CALL_STATS 8 /* system call statistics */
#define SI_PCI_INFO 9 /* get kernel info via PM */
#define SI_PROCPUB_TAB 10 /* copy of public entries of process table */
#define SI_DATA_STORE 5 /* get copy of data store mappings */
#define SI_SUBSCRIPTION 6 /* get copy of data store subscriptions */
#define SI_LOADINFO 7 /* get copy of load average structure */
#define SI_KPROC_TAB 8 /* copy of kernel process table */
#define SI_CALL_STATS 9 /* system call statistics */
#define SI_PCI_INFO 10 /* get kernel info via PM */
#define SI_PROCPUB_TAB 11 /* copy of public entries of process table */
/* NULL must be defined in <unistd.h> according to POSIX Sec. 2.7.1. */
#define NULL ((void *)0)