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riscv: Handle supervisor instruction page faults

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We should never take instruction page faults when in the kernel, but by
using the standard page fault code we should get a more-informative
message about faulting on a NOFAULT page rather than branching to the
default case here and printing an "Unknown kernel exception ..."
message.

Reviewed by:	jhb (mentor), markj
Approved by:	jhb (mentor), markj
Differential Revision:	https://reviews.freebsd.org/D26685
This commit is contained in:
Jessica Clarke 2020-10-06 13:02:20 +00:00
parent c300407979
commit 105708ca1c
1 changed files with 1 additions and 0 deletions
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sys/riscv/riscv/trap.c
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@ -290,6 +290,7 @@ do_trap_supervisor(struct trapframe *frame)
break;
case EXCP_STORE_PAGE_FAULT:
case EXCP_LOAD_PAGE_FAULT:
case EXCP_INST_PAGE_FAULT:
page_fault_handler(frame, 0);
break;
case EXCP_BREAKPOINT: