Vincent Chen 800149a77c riscv: sifive: Apply errata "cip-453" patch ... Add sign extension to the $badaddr before addressing the instruction page fault and instruction access fault to workaround the issue "cip-453". To avoid affecting the existing code sequence, this patch will creates two trampolines to add sign extension to the $badaddr. By the "alternative" mechanism, these two trampolines will replace the original exception handler of instruction page fault and instruction access fault in the excp_vect_table. In this case, only the specific SiFive CPU core jumps to the do_page_fault and do_trap_insn_fault through these two trampolines. Other CPUs are not affected. Signed-off-by: Vincent Chen <vincent.chen@sifive.com> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>		2021-04-26 08:24:57 -07:00
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sifive	riscv: sifive: Apply errata "cip-453" patch	2021-04-26 08:24:57 -07:00
alternative.c
Makefile