diff options
| author | David S. Miller <davem@sunset.davemloft.net> | 2006-03-01 22:42:18 -0800 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-03-20 01:14:13 -0800 |
| commit | 45f791eb0f03e760183d30d3f1f18dc2b8e902fe (patch) | |
| tree | 05ef47c68b45202106b70c1f28d4935a2c6115fb /arch/sparc64/kernel/itlb_miss.S | |
| parent | 92daa77e9a829350fd3900ff58d9c69820ad0e3d (diff) | |
| download | op-kernel-dev-45f791eb0f03e760183d30d3f1f18dc2b8e902fe.zip op-kernel-dev-45f791eb0f03e760183d30d3f1f18dc2b8e902fe.tar.gz | |
[SPARC64]: Fix _PAGE_EXEC handling.
First of all, use the known _PAGE_EXEC_{4U,4V} value instead
of loading _PAGE_EXEC from memory. We either know which one
to use by context, or we can code patch the test.
Next, we need to check executability of a PTE in the generic
TSB miss handler.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64/kernel/itlb_miss.S')
| -rw-r--r-- | arch/sparc64/kernel/itlb_miss.S | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/arch/sparc64/kernel/itlb_miss.S b/arch/sparc64/kernel/itlb_miss.S index 6dfe396..ad46e20 100644 --- a/arch/sparc64/kernel/itlb_miss.S +++ b/arch/sparc64/kernel/itlb_miss.S @@ -9,18 +9,18 @@ cmp %g4, %g6 ! Compare TAG /* ITLB ** ICACHE line 2: TSB compare and TLB load */ - sethi %hi(PAGE_EXEC), %g4 ! Setup exec check - ldx [%g4 + %lo(PAGE_EXEC)], %g4 bne,pn %xcc, tsb_miss_itlb ! Miss mov FAULT_CODE_ITLB, %g3 - andcc %g5, %g4, %g0 ! Executable? + andcc %g5, _PAGE_EXEC_4U, %g0 ! Executable? be,pn %xcc, tsb_do_fault nop ! Delay slot, fill me + stxa %g5, [%g0] ASI_ITLB_DATA_IN ! Load TLB + retry ! Trap done nop /* ITLB ** ICACHE line 3: */ - stxa %g5, [%g0] ASI_ITLB_DATA_IN ! Load TLB - retry ! Trap done + nop + nop nop nop nop |
