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Subject[PATCH 1/4] 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>
---
I guess it hardly ever triggers and code still builds, so it has aged so
well...

Maciej

linux-mips-isa1-sig-fp-context-fault.patch
Index: linux-sfr-test/arch/mips/kernel/r2300_fpu.S
===================================================================
--- linux-sfr-test.orig/arch/mips/kernel/r2300_fpu.S 2016-10-22 02:36:46.000000000 +0100
+++ linux-sfr-test/arch/mips/kernel/r2300_fpu.S 2016-10-22 02:37:20.891186000 +0100
@@ -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
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