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authorDave Aldridge <david.j.aldridge@oracle.com>2017-05-09 02:57:35 -0600
committerDavid S. Miller <davem@davemloft.net>2017-05-09 12:16:25 -0700
commit3c7f62212018b904ae17f5636ead18a4dca3a88f (patch)
tree3563b65cdb09b8257fcd890dbab0db14213c97d1 /fs/compat.c
parentaed74ea0a09d2e60e4b3fe45caf30f6365b6c9f3 (diff)
sparc64: fix fault handling in NGbzero.S and GENbzero.S
When any of the functions contained in NGbzero.S and GENbzero.S vector through *bzero_from_clear_user, we may end up taking a fault when executing one of the store alternate address space instructions. If this happens, the exception handler does not restore the %asi register. This commit fixes the issue by introducing a new exception handler that ensures the %asi register is restored when a fault is handled. Orabug: 25577560 Signed-off-by: Dave Aldridge <david.j.aldridge@oracle.com> Reviewed-by: Rob Gardner <rob.gardner@oracle.com> Reviewed-by: Babu Moger <babu.moger@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'fs/compat.c')
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