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vm: ignore RS pin (pre-allocate) requests for now

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. done by RS to reduce/remove dependency on VM for recovery
	. RS has the default stack size of 64MB since the nosegments
	  change, using a huge amount of unused memory to pre-allocate
	. ignore these requests until actually required (i.e. being able
	  to survive VM crashes)

Thanks to pikpik for investigating why RS was so huge.
This commit is contained in:
Ben Gras 2012-08-08 15:47:45 +02:00
parent 0ae2e2df94
commit b3f47f5835
1 changed files with 12 additions and 0 deletions
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12
servers/vm/rs.c
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@ -180,8 +180,20 @@ int do_rs_memctl(message *m_ptr)
switch(req) switch(req)
{ {
case VM_RS_MEM_PIN: case VM_RS_MEM_PIN:
/* Do not perform VM_RS_MEM_PIN yet - it costs the full
* size of the RS stack (64MB by default) in memory,
* and it's needed for functionality that isn't complete /
* merged in current Minix (surviving VM crashes).
*/
#if 0
r = map_pin_memory(vmp); r = map_pin_memory(vmp);
return r; return r;
#else
return OK;
#endif
case VM_RS_MEM_MAKE_VM: case VM_RS_MEM_MAKE_VM:
r = rs_memctl_make_vm_instance(vmp); r = rs_memctl_make_vm_instance(vmp);
return r; return r;