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| author | David S. Miller <davem@davemloft.net> | 2005-08-29 12:44:57 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2005-08-29 12:44:57 -0700 |
| commit | bde4e4ee9f90142d550e2684dec2c8df302f5f8e (patch) | |
| tree | 9ea03bd0e3cfe7ed1de41171dd5a906779b02e72 /arch/sparc64/kernel/entry.S | |
| parent | 5ea68e02766c52c153c62fc423cda659a80e45fa (diff) | |
| download | linux-bde4e4ee9f90142d550e2684dec2c8df302f5f8e.tar.bz2 | |
[SPARC64]: Do not call winfix_dax blindly
Verify we really are taking a data access exception trap, at TL1, from
one of the window spill/fill handlers.
Else call a new function, data_access_exception_tl1, to log the error.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64/kernel/entry.S')
| -rw-r--r-- | arch/sparc64/kernel/entry.S | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/sparc64/kernel/entry.S b/arch/sparc64/kernel/entry.S index 6d0476ff4ff8..214cd0ebe832 100644 --- a/arch/sparc64/kernel/entry.S +++ b/arch/sparc64/kernel/entry.S @@ -701,8 +701,24 @@ __do_data_access_exception_tl1: ldxa [%g5] ASI_DMMU, %g5 ! Get SFAR stxa %g0, [%g3] ASI_DMMU ! Clear SFSR.FaultValid bit membar #Sync + rdpr %tt, %g3 + cmp %g3, 0x80 ! first win spill/fill trap + blu,pn %xcc, 1f + cmp %g3, 0xff ! last win spill/fill trap + bgu,pn %xcc, 1f + nop ba,pt %xcc, winfix_dax rdpr %tpc, %g3 +1: sethi %hi(109f), %g7 + ba,pt %xcc, etraptl1 +109: or %g7, %lo(109b), %g7 + mov %l4, %o1 + mov %l5, %o2 + call data_access_exception_tl1 + add %sp, PTREGS_OFF, %o0 + ba,pt %xcc, rtrap + clr %l6 + __do_data_access_exception: rdpr %pstate, %g4 wrpr %g4, PSTATE_MG|PSTATE_AG, %pstate |