bleader <[email protected]> added the comment:
polachok provided a patch (attached) and generated a new iso for me to test.
It seems to have resolved the issue.
-- snip --
npx0: <math processor> on motherboard
npx0: INT 16 interface
-- snip --
_____________________________________________________
DragonFly issue tracker <[email protected]>
<http://bugs.dragonflybsd.org/issue1612>
_____________________________________________________
diff --git a/sys/platform/pc32/isa/npx.c b/sys/platform/pc32/isa/npx.c
index 6f99b4f..f8b7951 100644
--- a/sys/platform/pc32/isa/npx.c
+++ b/sys/platform/pc32/isa/npx.c
@@ -321,6 +321,16 @@ npx_probe1(device_t dev)
#else /* !SMP */
device_set_desc(dev, "math processor");
+ /*
+ * Modern CPUs all have an FPU that uses the INT16 interface
+ * and provide a simple way to verify that, so handle the
+ * common case right away.
+ */
+ if (cpu_feature & CPUID_FPU) {
+ npx_irq13 = 0;
+ npx_ex16 = hw_float = npx_exists = 1;
+ return (0);
+ }
/*
* Don't use fwait here because it might hang.
