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| 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/tsb.S | |
| parent | 92daa77e9a829350fd3900ff58d9c69820ad0e3d (diff) | |
| download | blackbird-op-linux-45f791eb0f03e760183d30d3f1f18dc2b8e902fe.tar.gz blackbird-op-linux-45f791eb0f03e760183d30d3f1f18dc2b8e902fe.zip | |
[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/tsb.S')
| -rw-r--r-- | arch/sparc64/kernel/tsb.S | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/sparc64/kernel/tsb.S b/arch/sparc64/kernel/tsb.S index cc225c0563c3..563852bf3594 100644 --- a/arch/sparc64/kernel/tsb.S +++ b/arch/sparc64/kernel/tsb.S @@ -103,6 +103,15 @@ tsb_dtlb_load: mov %g5, %g3 tsb_itlb_load: + /* Executable bit must be set. */ +661: andcc %g5, _PAGE_EXEC_4U, %g0 + .section .sun4v_1insn_patch, "ax" + .word 661b + andcc %g5, _PAGE_EXEC_4V, %g0 + .previous + + be,pn %xcc, tsb_do_fault + nop 661: stxa %g5, [%g0] ASI_ITLB_DATA_IN retry |
