On 2015-04-17 18:43, Radim Krčmář wrote: > 2015-04-13 07:16+0200, Jan Kiszka: >> PS: If someone has a good idea for a simple test case on machines >> without IOMMU (like my current boxes), thus without a chance to use >> device pass-through to stress guest PAT settings, I would be all ears. > > Not a good one: KVM sets VMX_EPT_IPAT_BIT for RAM unless > kvm_arch_has_noncoherent_dma(). You can comment the line in > vmx_get_mt_mask(), or call kvm_arch_register_noncoherent_dma(), > for guest PAT to work on normal memory.
That's for VMX (where I do have IOMMUs), but I would need something for AMD. :) Jan -- Siemens AG, Corporate Technology, CT RTC ITP SES-DE Corporate Competence Center Embedded Linux -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
