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Thu, 15 Oct 2020 10:13:59 -0700 (PDT) MIME-Version: 1.0 References: <1a3b90f4-564e-84d3-fd6a-3454e8753579@citrix.com> <20201015113109.GA68032@Air-de-Roger> In-Reply-To: From: Jason Andryuk Date: Thu, 15 Oct 2020 13:13:47 -0400 Message-ID: Subject: Re: i915 dma faults on Xen To: Tamas K Lengyel Cc: =?UTF-8?Q?Roger_Pau_Monn=C3=A9?= , Andrew Cooper , xen-devel Content-Type: text/plain; charset="UTF-8" On Thu, Oct 15, 2020 at 12:39 PM Tamas K Lengyel wrote: > > > > Can you paste the memory map as printed by Xen when booting, and what > > > command line are you using to boot Xen. > > > > So this is OpenXT, and it's booting EFI -> xen -> tboot -> xen > > Unrelated comment: since tboot now has a PE build > (http://hg.code.sf.net/p/tboot/code/rev/5c68f0963a78) I think it would > be time for OpenXT to drop the weird efi->xen->tboot->xen flow and > just do efi->tboot->xen. Only reason we did efi->xen->tboot was > because tboot didn't have a PE build at the time. It's a very hackish > solution that's no longer needed. Thanks for the pointer, Tamas. If I recall correctly, there was also an issue with ExitBootServices. Do you know if that has been addressed? Depending on timing, OpenXT may just move to TrenchBoot for a DRTM solution. Regards, Jason