Re: [RFC v2 0/5] arm64: kvm: reset hyp context for kexec

From: Kyle McMartin
Date: Fri Mar 27 2015 - 13:40:53 EST


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...

--Kyle
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