Subject: what's this machine check mean?
To: None <firstname.lastname@example.org>
From: der Mouse <mouse@Rodents.Montreal.QC.CA>
Date: 04/15/2000 03:33:09
I wrote, about some machine checks,
> I don't (yet) know what routine that pc falls into; I'm currently
> copying the kernel in question to the 1.4 alpha box, but it's over a
> slow netlink, so it's taking a while.
This finished - yay, it actually finished in finite time! I've now had
three machine checks, two at 0xfffffc000050f3c8 and one at
0xfffffc000050f3c8 is lca_mem_read_1+0x48 (+72)
0xfffffc000050f3e4 is lca_mem_read_1+0x64 (+100)
I don't know much alpha assembly, but here's where they fall in gdb's
disassembly of that code (reformatted for comprehensibility).
jsr ra,(t12),0xfffffc0000510108 <lca_conf_write+40>
blt s0,0xfffffc000050f3d8 <lca_mem_read_1+88>
+72: zapnot v0,0xf,v0
br 0xfffffc000050f3e4 <lca_mem_read_1+100>
+88: addq s0,s1,t0
+100: ldq ra,0(sp)
It clearly means something that they're all in that function, two of
them at the same address even, but darned if I can tell what. What's
this LCA thing? It looks as though it's some kind of bus, but the
comments about "can have only one" make it sound like a semi-fake bus.
But on the other hand it seems to correspond to a real chip.
7D C8 61 52 5D E7 2D 39 4E F1 31 3E E8 B3 27 4B