From: James Turner <linuxkernel.foss@dmarc-none.turner.link>
To: Thorsten Leemhuis <regressions@leemhuis.info>
Cc: "Pan, Xinhui" <Xinhui.Pan@amd.com>,
"regressions@lists.linux.dev" <regressions@lists.linux.dev>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
Greg KH <gregkh@linuxfoundation.org>,
"Lazar, Lijo" <lijo.lazar@amd.com>,
LKML <linux-kernel@vger.kernel.org>,
"amd-gfx@lists.freedesktop.org" <amd-gfx@lists.freedesktop.org>,
"Deucher, Alexander" <Alexander.Deucher@amd.com>,
Alex Williamson <alex.williamson@redhat.com>,
Alex Deucher <alexdeucher@gmail.com>,
"Koenig, Christian" <Christian.Koenig@amd.com>
Subject: Re: [REGRESSION] Too-low frequency limit for AMD GPU PCI-passed-through to Windows VM
Date: Sun, 06 Mar 2022 21:12:52 -0500 [thread overview]
Message-ID: <877d96to55.fsf@dmarc-none.turner.link> (raw)
In-Reply-To: <092b825a-10ff-e197-18a1-d3e3a097b0e3@leemhuis.info>
Hi Thorsten,
My understanding at this point is that the root problem is probably not
in the Linux kernel but rather something else (e.g. the machine firmware
or AMD Windows driver) and that the change in
f9b7f3703ff9 ("drm/amdgpu/acpi: make ATPX/ATCS structures global (v2)")
simply exposed the underlying problem.
This week, I'll double-check that this is the case by disabling the
`amdgpu_atif_pci_probe_handle` function and testing again. I'll post the
results here.
James
WARNING: multiple messages have this Message-ID (diff)
From: James Turner <linuxkernel.foss@dmarc-none.turner.link>
To: Thorsten Leemhuis <regressions@leemhuis.info>
Cc: Alex Deucher <alexdeucher@gmail.com>,
"Lazar, Lijo" <lijo.lazar@amd.com>,
"Deucher, Alexander" <Alexander.Deucher@amd.com>,
"regressions@lists.linux.dev" <regressions@lists.linux.dev>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
Greg KH <gregkh@linuxfoundation.org>,
"Pan, Xinhui" <Xinhui.Pan@amd.com>,
LKML <linux-kernel@vger.kernel.org>,
"amd-gfx@lists.freedesktop.org" <amd-gfx@lists.freedesktop.org>,
Alex Williamson <alex.williamson@redhat.com>,
"Koenig, Christian" <Christian.Koenig@amd.com>
Subject: Re: [REGRESSION] Too-low frequency limit for AMD GPU PCI-passed-through to Windows VM
Date: Sun, 06 Mar 2022 21:12:52 -0500 [thread overview]
Message-ID: <877d96to55.fsf@dmarc-none.turner.link> (raw)
In-Reply-To: <092b825a-10ff-e197-18a1-d3e3a097b0e3@leemhuis.info>
Hi Thorsten,
My understanding at this point is that the root problem is probably not
in the Linux kernel but rather something else (e.g. the machine firmware
or AMD Windows driver) and that the change in
f9b7f3703ff9 ("drm/amdgpu/acpi: make ATPX/ATCS structures global (v2)")
simply exposed the underlying problem.
This week, I'll double-check that this is the case by disabling the
`amdgpu_atif_pci_probe_handle` function and testing again. I'll post the
results here.
James
next prev parent reply other threads:[~2022-03-07 8:26 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-17 2:12 [REGRESSION] Too-low frequency limit for AMD GPU PCI-passed-through to Windows VM James D. Turner
2022-01-17 8:09 ` Greg KH
2022-01-17 9:03 ` Thorsten Leemhuis
2022-01-18 3:14 ` James Turner
2022-01-21 2:13 ` James Turner
2022-01-21 6:22 ` Thorsten Leemhuis
2022-01-21 6:22 ` Thorsten Leemhuis
2022-01-21 16:45 ` Alex Deucher
2022-01-21 16:45 ` Alex Deucher
2022-01-22 0:51 ` James Turner
2022-01-22 0:51 ` James Turner
2022-01-22 5:52 ` Lazar, Lijo
2022-01-22 5:52 ` Lazar, Lijo
2022-01-22 21:11 ` James Turner
2022-01-22 21:11 ` James Turner
2022-01-24 14:21 ` Lazar, Lijo
2022-01-24 14:21 ` Lazar, Lijo
2022-01-24 23:58 ` James Turner
2022-01-24 23:58 ` James Turner
2022-01-25 13:33 ` Lazar, Lijo
2022-01-25 13:33 ` Lazar, Lijo
2022-01-30 0:25 ` Jim Turner
2022-01-30 0:25 ` Jim Turner
2022-02-15 14:56 ` Thorsten Leemhuis
2022-02-15 14:56 ` Thorsten Leemhuis
2022-02-15 15:11 ` Alex Deucher
2022-02-15 15:11 ` Alex Deucher
2022-02-16 0:25 ` James D. Turner
2022-02-16 0:25 ` James D. Turner
2022-02-16 16:37 ` Alex Deucher
2022-02-16 16:37 ` Alex Deucher
2022-03-06 15:48 ` Thorsten Leemhuis
2022-03-06 15:48 ` Thorsten Leemhuis
2022-03-07 2:12 ` James Turner [this message]
2022-03-07 2:12 ` James Turner
2022-03-13 18:33 ` James Turner
2022-03-13 18:33 ` James Turner
2022-03-17 12:54 ` Thorsten Leemhuis
2022-03-17 12:54 ` Thorsten Leemhuis
2022-03-18 5:43 ` Paul Menzel
2022-03-18 5:43 ` Paul Menzel
2022-03-18 7:01 ` Thorsten Leemhuis
2022-03-18 7:01 ` Thorsten Leemhuis
2022-03-18 14:46 ` Alex Williamson
2022-03-18 14:46 ` Alex Williamson
2022-03-18 15:06 ` Alex Deucher
2022-03-18 15:06 ` Alex Deucher
2022-03-18 15:25 ` Alex Williamson
2022-03-18 15:25 ` Alex Williamson
2022-03-21 1:26 ` James Turner
2022-03-21 1:26 ` James Turner
2022-01-24 17:04 ` Alex Deucher
2022-01-24 17:04 ` Alex Deucher
2022-01-24 17:30 ` Alex Williamson
2022-01-24 17:30 ` Alex Williamson
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