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Compare Revisions

• This comparison shows the changes necessary to convert path

  → /trunk/kernel/generic/src/mm/ @ 2141

  → /trunk/kernel/generic/src/mm/ @ 2140

  ↔ Reverse comparison

• Compare Path:	Rev

  With Path:	Rev

Ignore whitespace Rev 2141 → Rev 2140

/trunk/kernel/generic/src/mm/backend_anon.c
157,6 → 157,21
if (!used_space_insert(area, ALIGN_DOWN(addr, PAGE_SIZE), 1))
panic("Could not insert used space.\n");
#ifdef CONFIG_VIRT_IDX_DCACHE
if (dirty && PAGE_COLOR(PA2KA(frame)) != PAGE_COLOR(addr)) {
/*
* By writing to the frame using kernel virtual address,
* we have created an illegal virtual alias. We now have to
* invalidate cachelines belonging to addr on all processors
* so that they will be reloaded with the new content on next
* read.
*/
dcache_flush_frame(addr, frame);
dcache_shootdown_start(DCACHE_INVL_FRAME, PAGE_COLOR(addr), frame);
dcache_shootdown_finalize();
}
#endif
return AS_PF_OK;
}
225,3 → 240,4
/** @}
*/

/trunk/kernel/generic/src/mm/backend_elf.c
209,6 → 209,21
if (!used_space_insert(area, ALIGN_DOWN(addr, PAGE_SIZE), 1))
panic("Could not insert used space.\n");
#ifdef CONFIG_VIRT_IDX_DCACHE
if (dirty && PAGE_COLOR(PA2KA(frame)) != PAGE_COLOR(addr)) {
/*
* By writing to the frame using kernel virtual address,
* we have created an illegal virtual alias. We now have to
* invalidate cachelines belonging to addr on all processors
* so that they will be reloaded with the new content on next
* read.
*/
dcache_flush_frame(addr, frame);
dcache_shootdown_start(DCACHE_INVL_FRAME, PAGE_COLOR(addr), frame);
dcache_shootdown_finalize();
}
#endif
return AS_PF_OK;
}
340,3 → 355,4
/** @}
*/

/trunk/kernel/generic/src/mm/as.c
613,7 → 613,8
* such address space area, EPERM if there was a problem in accepting the area
* or ENOMEM if there was a problem in allocating destination address space
* area. ENOTSUP is returned if the address space area backend does not support
* sharing.
* sharing or if the kernel detects an attempt to create an illegal address
* alias.
*/
int as_area_share(as_t *src_as, uintptr_t src_base, size_t acc_size,
as_t *dst_as, uintptr_t dst_base, int dst_flags_mask)
666,6 → 667,20
return EPERM;
}
#ifdef CONFIG_VIRT_IDX_DCACHE
if (!(dst_flags_mask & AS_AREA_EXEC)) {
if (PAGE_COLOR(src_area->base) != PAGE_COLOR(dst_base)) {
/*
* Refuse to create an illegal address alias.
*/
mutex_unlock(&src_area->lock);
mutex_unlock(&src_as->lock);
interrupts_restore(ipl);
return ENOTSUP;
}
}
#endif /* CONFIG_VIRT_IDX_DCACHE */
/*
* Now we are committed to sharing the area.
* First, prepare the area for sharing.
886,9 → 901,9
* list of inactive address spaces with assigned
* ASID.
*/
ASSERT(old_as->asid != ASID_INVALID);
list_append(&old_as->inactive_as_with_asid_link,
&inactive_as_with_asid_head);
ASSERT(old_as->asid != ASID_INVALID);
list_append(&old_as->inactive_as_with_asid_link,
&inactive_as_with_asid_head);
}
mutex_unlock(&old_as->lock);