David Miller wrote: [Tue Sep 16 2014, 05:47:25PM EDT] > From: Bob Picco <bpicco@xxxxxxxxxx> > Date: Tue, 16 Sep 2014 09:26:47 -0400 > > I just looked into this a bit while reviewing this patch. Okay. > > > A more recent one is an ITLB issue with a bad pagesize which could > > be a hardware bug. > > The error is signalled solely by the hypervisor. Let's look at the > PTE it doesn't like. I agree and forgot about this in the context of bus error. Note, I've seen this issue once or twice. Perhaps only on my ~P0 T4-2. I couldn't find the issue in my T5-2 log. > > > This is recent mainline for ITLB: > > [ 3708.179864] SUN4V-ITLB: TPC<0xfffffc010071cefc> > > [ 3708.188866] SUN4V-ITLB: O7[fffffc010071cee8] > > [ 3708.197377] SUN4V-ITLB: O7<0xfffffc010071cee8> > > [ 3708.206539] SUN4V-ITLB: vaddr[e0003] ctx[1a3c] pte[2900000dcc800eeb] error[4] > > Indeed bad pagesize is signalled. The page size bits are in the low > 3 bits of the PTE, which here is 0x3 which should encode a 4MB page. Yes. > > However I notice that 0x8 is set, which is a reserved bit. That > shouldn't happen, and could be what the hypervisor really doesn't > like. Also _PAGE_VALID isn't set. > -- > To unsubscribe from this list: send the line "unsubscribe sparclinux" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
