Changeset 59fb782 in mainline for kernel/arch/sparc64/src/mm/sun4u/tlb.c

Timestamp:

2013-03-24T19:38:18Z (11 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

d965dc3

Parents:

119b46e

Message:

Unify the use of virtual addresses and virtual page addresses in mm code.

• as_page_fault() accepts faulting address (if available) and propagates the faulting page further along
• backends' page_fault() handlers assume page fault address
• page_mapping_create/destroy/find() accept addresses, but pass only page and frame addresses along
• as_area_create(), as_area_resize() now test whether the address is page-aligned
• renames of various variables to better fit their purpose (address vs. page)
• no need to align the addresses in mips32 TLB exception handlers now

File:

• kernel/arch/sparc64/src/mm/sun4u/tlb.c (modified) (2 diffs)

kernel/arch/sparc64/src/mm/sun4u/tlb.c

@@ -196 +196 @@
 void fast_instruction_access_mmu_miss(sysarg_t unused, istate_t *istate)
 {
-        uintptr_t page_16k = ALIGN_DOWN(istate->tpc, PAGE_SIZE);
         size_t index = (istate->tpc >> MMU_PAGE_WIDTH) % MMU_PAGES_PER_PAGE;
         pte_t *t;
 
-        t = page_mapping_find(AS, page_16k, true);
+        t = page_mapping_find(AS, istate->tpc, true);
         if (t && PTE_EXECUTABLE(t)) {
                 /*
@@ -216 +215 @@
                  * handler.
                  */
-                as_page_fault(page_16k, PF_ACCESS_EXEC, istate);
+                as_page_fault(istate->tpc, PF_ACCESS_EXEC, istate);
         }
 }