Changeset 8c5586c in mainline for kernel/arch/sparc64/src/mm/sun4u/tlb.c

Timestamp:

2019-04-21T20:53:37Z (5 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

25fb8c6

Parents:

1b1be5f

git-author:

Jakub Jermar <jakub@…> (2019-04-21 20:47:38)

git-committer:

Jakub Jermar <jakub@…> (2019-04-21 20:53:37)

Message:

Demap using primary context for kernel faults

When the protection fault happens because of a kernel mapping, the demap
must not use the secondary context as that belongs to the task in which
the fault happened, but the primary context or nucleus, which contains
kernel's context.

File:

• kernel/arch/sparc64/src/mm/sun4u/tlb.c (modified) (1 diff)

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

@@ -311 +311 @@
                 t.a = true;
                 t.d = true;
-                dtlb_demap(TLB_DEMAP_PAGE, TLB_DEMAP_SECONDARY,
+                dtlb_demap(TLB_DEMAP_PAGE,
+                    (as == AS_KERNEL) ? TLB_DEMAP_PRIMARY : TLB_DEMAP_SECONDARY,
                     page_16k + index * MMU_PAGE_SIZE);
                 dtlb_pte_copy(&t, index, false);