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Compare Revisions

• This comparison shows the changes necessary to convert path

  → /kernel/ @ 1416

  → /kernel/ @ 1417

  ↔ Reverse comparison

• Compare Path:	Rev

  With Path:	Rev

Ignore whitespace Rev 1416 → Rev 1417

/kernel/trunk/generic/include/mm/as.h
148,7 → 148,8
extern int as_page_fault(__address page, pf_access_t access, istate_t *istate);
extern void as_switch(as_t *old, as_t *new);
extern void as_free(as_t *as);
extern int as_area_share(as_t *src_as, __address src_base, size_t acc_size, __address dst_base);
extern int as_area_share(as_t *src_as, __address src_base, size_t acc_size,
__address dst_base, int dst_flags_mask);
extern size_t as_get_size(__address base);
extern int used_space_insert(as_area_t *a, __address page, count_t count);
extern int used_space_remove(as_area_t *a, __address page, count_t count);

/kernel/trunk/generic/src/mm/as.c
458,10 → 458,11
* in its pagemap B+tree. The new address space are simply gets the
* sh_info of the source area.
*
* @param src_as Pointer to source address space
* @param src_as Pointer to source address space.
* @param src_base Base address of the source address space area.
* @param acc_size Expected size of the source area
* @param dst_base Target base address
* @param acc_size Expected size of the source area.
* @param dst_base Target base address.
* @param dst_flags_mask Destination address space area flags mask.
*
* @return Zero on success or ENOENT if there is no such task or
* if there is no such address space area,
471,7 → 472,7
* to share non-anonymous address space area is detected.
*/
int as_area_share(as_t *src_as, __address src_base, size_t acc_size,
__address dst_base)
__address dst_base, int dst_flags_mask)
{
ipl_t ipl;
int src_flags;
567,8 → 568,11
* The destination area is created with AS_AREA_ATTR_PARTIAL
* attribute set which prevents race condition with
* preliminary as_page_fault() calls.
* The flags of the source area are masked against dst_flags_mask
* to support sharing in less privileged mode.
*/
dst_area = as_area_create(AS, src_flags, src_size, dst_base, AS_AREA_ATTR_PARTIAL, &anon_backend, NULL);
dst_area = as_area_create(AS, src_flags & dst_flags_mask, src_size, dst_base,
AS_AREA_ATTR_PARTIAL, &anon_backend, NULL);
if (!dst_area) {
/*
* Destination address space area could not be created.

/kernel/trunk/generic/src/ipc/sysipc.c
138,8 → 138,8
spinlock_unlock(&answer->sender->lock);
interrupts_restore(ipl);
return as_area_share(as, IPC_GET_ARG2(*olddata),IPC_GET_ARG3(*olddata),
IPC_GET_ARG1(answer->data));
return as_area_share(as, IPC_GET_ARG1(*olddata), IPC_GET_ARG2(*olddata),
IPC_GET_ARG1(answer->data), IPC_GET_ARG3(*olddata));
}
}
return 0;
165,11 → 165,11
call->private = newphid;
break;
case IPC_M_AS_AREA_SEND:
size = as_get_size(IPC_GET_ARG2(call->data));
size = as_get_size(IPC_GET_ARG1(call->data));
if (!size) {
return EPERM;
}
IPC_SET_ARG3(call->data, size);
IPC_SET_ARG2(call->data, size);
break;
default:
break;