ChanServ changed the topic of #armlinux to: ARM kernel talk [Upstream kernel, find your vendor forums for questions about their kernels] | https://libera.irclog.whitequark.org/armlinux
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<ajb-linaro>
ardb isn't that down to the hypervisor to disable IRQs under debug? I think that is what x86 does but its been awhile since I've checked the code
<ardb>
yes hence KVM_GUESTDBG_BLOCKIRQ
<ardb>
which KVM does not implement on ARM
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<puranjaymohan>
I have sent an email to the list to start a discussion about this
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<maz>
also, let's notice how extensive the documentation on KVM_GUESTDBG_BLOCKIRQ is. quality stuff.
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<ajb-linaro>
modern USB controllers all follow standards like ohci/xhci right? I wouldn't need a special driver for the Renesas Electronics Corp. uPD720201 on AVA would I?
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<ajb-linaro>
puranjaymohan: got a message id for that?
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<ardb>
ajb-linaro: should be xhci
<broonie>
ajb-linaro: you might need some platform glue for things like power/clock integration, and hookup to power domains but the controller itself should be standard.
<ardb>
is in integrated on the board? it might need a firmware
<ardb>
is it pcie?
<ajb-linaro>
it did work, but I've just built a 6.12-rc kernel to test the pfn pin kvm/next with virtio-gpu
<ajb-linaro>
ardb: ^ yeah that all looks like the generic usb subsystem...
<ajb-linaro>
Oct 28 13:23:39 gwenyn kernel: {1}[Hardware Error]: Hardware error from APEI Generic Hardware Error Source: 0
<ardb>
if it appears in lspci but the driver never probes, it sounds like you are lacking the xhci-pci driver
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<ajb-linaro>
ardb USB_XHCI_HCD=y - but it looks like there are various PCI errors so either kvm/next or my altra workarounds have bust things...
<ajb-linaro>
Oct 28 13:23:39 gwenyn kernel: pci 000c:00:01.0: bridge window [io size 0x1000]: can't assign; no space
<ajb-linaro>
yeah thats not good
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<maz>
ajb-linaro: you probably have one of these rom-less renessas oddity that need firmware.
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<maz>
add the relevant kernel config option to your firmware and find the firmware if you can.
<maz>
CONFIG_USB_XHCI_PCI_RENESAS is what you need.
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<geertu>
ukleinek: FTR, I've pushed an updated topic/overlays branch with Links: tags
<ukleinek>
geertu: thanks for the headsup
<geertu>
Apparently Pantelis did post a v8 of some of the patches, so I updated these from v7 (no actual code changes). Unfortunately only the cover letter (not the invididual patches) of that series has a changelog, so historians have to retrieve that from lore.
<ukleinek>
geertu: you know about b4 shazam? That could be used to conserve the cover letter.
<ukleinek>
(with -M)
<geertu>
ukleinek: While I do use "b4 am", I'm not up to date with the latest shiny features.
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<ukleinek>
b4 shazam exists since Jun 2022
<ukleinek>
in b4 0.9.0
<ukleinek>
..ooOO(It's even in Debian stable!)
<geertu>
ukleinek: I guess it's like git. It takes ages for me to start using features introduced more than 2y after the start of the project ;-)
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<geertu>
ukleinek: thx!
<geertu>
CU @ FOSDEM ;-)
<ajb-linaro>
maz: it did in fact turn out to be the Altra workarounds breaking PCI. Disabling them made stuff work, and it looks like I can run vkmark in the guest without it
<ukleinek>
geertu: additional quest while watching that video: Spot me in the audience :-)
<ajb-linaro>
glmark can kill it though :-/ I guess vulkan is better aligned than OpenGL?
* ajb-linaro
amends his statement to "only for certain window layouts"
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<maz>
ajb-linaro: a PCI implementation true to ARM spirit, then.
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<[florian]>
ukleinek: I don't usually use Raspbian, so no, I don't know why
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