Date: Fri, 25 Sep 2020 10:08:41 -0700 From: Mark Millard <marklmi@yahoo.com> To: Robert Crowston <crowston@protonmail.com> Cc: Robert Clausecker <fuz@fuz.su>, freebsd-arm@freebsd.org Subject: Re: RPI 4B on UEFI: xhci0 disconnects under high load Message-ID: <FA5E1DB8-AE43-4934-B0AD-4D8200E132B3@yahoo.com> In-Reply-To: <Y-XjGjcz6f1wZ_boqk8rDM1oywdBjC1frQn_s0NR9BSa9VQAKH8sJjFGRn1-PTIecV-oHsfOjeYQvC9CVCiHy6uNg7YTZqTvaF3YG06LW2M=@protonmail.com> References: <20200924224749.GA18463@fuz.su> <66418AE0-79C9-4402-8325-7094E4230D38@yahoo.com> <20200925075822.GB51892@fuz.su> <9EBAAD5C-120D-4F7B-9C5F-1BB045CC1E17@yahoo.com> <Y-XjGjcz6f1wZ_boqk8rDM1oywdBjC1frQn_s0NR9BSa9VQAKH8sJjFGRn1-PTIecV-oHsfOjeYQvC9CVCiHy6uNg7YTZqTvaF3YG06LW2M=@protonmail.com>
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On 2020-Sep-25, at 03:39, Robert Crowston <crowston@protonmail.com> = wrote: > Could the failure of the ACPI patch to work be related to the = pre-September 2020 dtbs reporting 4 GB available for pci DMA (as you = reported today in another thread)? >=20 I'm unclear if you are specifically referring to: A) this thread's "disconnects under high load" failures? B) the huge file duplication and diff/cmp test failures? C) both? D) even more? For (A) I'd not conclude much until results are in for FreeBSD that is head -r365918 or later. It might be a fixed problem. For (B), I've been reporting examples of the issue since 2020-Jun-21 using rpi4-uefi-devel v1.16 and head -r360311 . But my most recent reports are based on the modern dtb that has 3 GiByte for the size of the range (uefi v1.20 and its bundled RPI4B materials or newer raspberry pi materials) and head -r365932. So both old and new got the same type of failures. (I've not tested materials from prior to 2020-Jun-21 with > 3072 MiByte in this way: that is when I discovered the test.) Does that answer your question? =3D=3D=3D Mark Millard marklmi at yahoo.com ( dsl-only.net went away in early 2018-Mar)
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