On 25.09.19 19:03, Paul Durrant wrote:
Hi, Paul
Subject: Re: [Xen-devel] [PATCH v13 0/4] add per-domain IOMMU control
[CC Julien]
Hi Paul
I may mistake, but looks like
80ff3d338dc93260b41ffeeebb0f852c2edef9ce iommu: tidy up
iommu_use_hap_pt() and need_iommu_pt_sync() macros
triggers ASSERT_UNREACHABLE on Arm if no IOMMU has been found (I built
with my platform's IOMMU driver disabled: # CONFIG_IPMMU_VMSA is not set) .
So, iommu_setup() calls clear_iommu_hap_pt_share() with
iommu_hap_pt_share being set (CONFIG_IOMMU_FORCE_PT_SHARE=y) which,
actually, triggers ASSERT.
BTW, I assume disabling the iommu on the xen command like will work round the
issue?
No. Disabling the iommu will lead to ASSERT in all cases.
--
Regards,
Oleksandr Tyshchenko
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