D26990.id78911.diff
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D26990.id78911.diff
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	Index: head/sys/riscv/riscv/vm_machdep.c
	===================================================================
	--- head/sys/riscv/riscv/vm_machdep.c
	+++ head/sys/riscv/riscv/vm_machdep.c
	@@ -132,12 +132,14 @@

	frame = td->td_frame;

	- switch (error) {
	- case 0:
	+ if (__predict_true(error == 0)) {
	frame->tf_a[0] = td->td_retval[0];
	frame->tf_a[1] = td->td_retval[1];
	frame->tf_t[0] = 0; /* syscall succeeded */
	- break;
	+ return;
	+ }
	+
	+ switch (error) {
	case ERESTART:
	frame->tf_sepc -= 4; /* prev instruction */
	break;