Messages in this thread | | | Subject | Re: KVM guest sometimes failed to boot because of kernel stack overflow if KPTI is enabled on a hisilicon ARM64 platform. | From | James Morse <> | Date | Wed, 20 Jun 2018 16:54:57 +0100 |
| |
Hi Wei,
On 20/06/18 16:52, Wei Xu wrote: > On 2018/6/20 22:42, Will Deacon wrote: >> Hmm, I wonder if this is at all related to RAS, since we've just enabled >> that and if we take a fault whilst rewriting swapper then we're going to >> get stuck. What happens if you set CONFIG_ARM64_RAS_EXTN=n in the guest? > > I will try it now.
It's not just the Kconfig symbol, could you also revert:
f751daa4f9d3 ("arm64: Unconditionally enable IESB on exception entry/return for firmware-first")
(reverts and build cleanly on 4.17)
Thanks,
James
| |