Changeset d70ebffe in mainline for kernel/arch/sparc64/include/arch/mm/sun4u/tlb.h

Timestamp:

2014-10-27T15:10:14Z (10 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

aef669b

Parents:

ec443d5

Message:

Let the fast MMU traps use exc_dispatch() in their slow-path.

In order to get proper exception accounting, the MMU related traps need
to go through the code in exc_dispatch(). To make this possible, we pass
the DTLB Tag Access register in istate_t in order to make way for the
trap type argument, which needs to be passed as the first argument to
exc_dispatch().

As a collateral change, this commit modifies the istate_t structure to
match the SPARC V9 ABI stack frame layout. It gives us a richer istate_t
with more information in it and also simplifies calculation of stack
offsets inside of preemptible_handler.

File:

• kernel/arch/sparc64/include/arch/mm/sun4u/tlb.h (modified) (1 diff)

kernel/arch/sparc64/include/arch/mm/sun4u/tlb.h

@@ -678 +678 @@
 }
 
-extern void fast_instruction_access_mmu_miss(sysarg_t, istate_t *);
-extern void fast_data_access_mmu_miss(tlb_tag_access_reg_t, istate_t *);
-extern void fast_data_access_protection(tlb_tag_access_reg_t , istate_t *);
+extern void fast_instruction_access_mmu_miss(unsigned int, istate_t *);
+extern void fast_data_access_mmu_miss(unsigned int, istate_t *);
+extern void fast_data_access_protection(unsigned int, istate_t *);
 
 extern void dtlb_insert_mapping(uintptr_t, uintptr_t, int, bool, bool);