On Mon, 30 Mar 2015 02:39:53 +0100
AKASHI Takahiro <takahiro.akashi at linaro.org> wrote:
> On 03/28/2015 02:40 AM, Kyle McMartin wrote:
> > On Fri, Mar 27, 2015 at 03:37:04PM +0000, Marc Zyngier wrote:
> >>> [ 236.260863] Kernel panic - not syncing: HYP panic:
> >>> [ 236.260863] PS:600003c9 PC:000003ffffff0830 ESR:0000000096000006
> >>
> >> It would be interesting if you could find out what you have at offset
> >> 0x830 of hyp-init.o (the stack trace is for EL1, and is not going to
> >> help much).
> >>
> >
> > Given the alignment, i'm going to assume i'm looking at the right thing:
> >
> > 0000000000000820 <__kvm_hyp_reset>:
> > 820: d51c2000 msr ttbr0_el2, x0
> > 824: d5033fdf isb
> > 828: d50c871f tlbi alle2
> > 82c: d5033f9f dsb sy
> > 830: 10000060 adr x0, 83c <__kvm_hyp_reset+0x1c>
> > 834: b3403c01 bfxil x1, x0, #0, #16
> > 838: d61f0020 br x1
> > 83c: d53c1000 mrs x0, sctlr_el2
> >
> > but it seems fairly implausible to be trapping on ADR x0, 1f...
>
>
> I've never seen this panic on fast model...
>
> ESR shows that
> - Exception class: Data abort taken without a change in Exception level
> - Data fault status code: Translation fault at EL2
>
> and FAR seems not to be a proper address.
... which is consistent with what we're seeing here (data fault on
something that doesn't generate a load/store). I'm pretty sure the
page tables are screwed.
Have you tested it with 64k pages?
Thanks,
M.
--
Jazz is not dead. It just smells funny.
