MIPS: Fix ISA I FP sigcontext access violation handling

Complement commit 0ae8dceaebe3 ("Merge with 2.3.10.") and use the local
`fault' handler to recover from FP sigcontext access violation faults,
like corresponding code does in r4k_fpu.S.  The `bad_stack' handler is
in syscall.c and is not suitable here as we want to propagate the error
condition up through the caller rather than killing the thread outright.

Signed-off-by: Maciej W. Rozycki <macro@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14474/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

diff --git a/arch/mips/kernel/r2300_fpu.S b/arch/mips/kernel/r2300_fpu.S
index b4ac637..c4c8c1b 100644 (file)
--- a/arch/mips/kernel/r2300_fpu.S
+++ b/arch/mips/kernel/r2300_fpu.S
@@ -21,7 +21,7 @@
 #define EX(a,b)                                                        \
 9:     a,##b;                                                  \
        .section __ex_table,"a";                                \
-       PTR     9b,bad_stack;                                   \
+       PTR     9b,fault;                                       \
        .previous
 
        .set    noreorder