Commit 30a6ecad authored by David S. Miller's avatar David S. Miller Committed by David S. Miller

[SPARC64]: Don't clobber alt-global %g4 on window fixups.

If we are returning back to kernel mode, %g4 could be live
(for example, in the case where we window spill in the etrap
code).  So do not change it's value if going back to kernel.
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 86b81868
...@@ -160,7 +160,7 @@ spill_fixup: ...@@ -160,7 +160,7 @@ spill_fixup:
andcc %g1, TSTATE_PRIV, %g0 andcc %g1, TSTATE_PRIV, %g0
saved saved
and %g1, TSTATE_CWP, %g1 and %g1, TSTATE_CWP, %g1
be,pn %xcc, window_scheisse_from_user_common be,a,pn %xcc, window_scheisse_from_user_common
mov FAULT_CODE_WRITE | FAULT_CODE_DTLB | FAULT_CODE_WINFIXUP, %g4 mov FAULT_CODE_WRITE | FAULT_CODE_DTLB | FAULT_CODE_WINFIXUP, %g4
retry retry
......
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