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To:     Kalle Valo <kvalo@codeaurora.org>,
        Thomas Gleixner <tglx@linutronix.de>
Cc:     Govind Singh <govinds@codeaurora.org>, linux-pci@vger.kernel.org,
        linux-wireless@vger.kernel.org, Devin Bayer <dev@doubly.so>,
        Christoph Hellwig <hch@lst.de>,
        Bjorn Helgaas <helgaas@kernel.org>, ath11k@lists.infradead.org,
        David Woodhouse <dwmw@amazon.co.uk>,
        Stefani Seibold <stefani@seibold.net>
References: <20201103160838.GA246433@bjorn-Precision-5520>
 <874km61732.fsf@nanos.tec.linutronix.de>
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 <87mtzxkus5.fsf@nanos.tec.linutronix.de> <87wnz0hr9k.fsf@codeaurora.org>
 <87ft5hehlb.fsf@codeaurora.org>
From:   Thomas Krause <thomaskrause@posteo.de>
Subject: Re: pci_alloc_irq_vectors fails ENOSPC for XPS 13 9310
Message-ID: <6b60c8f1-ec37-d601-92c2-97a485b73431@posteo.de>
Date:   Wed, 11 Nov 2020 09:53:51 +0100
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Am 10.11.20 um 09:33 schrieb Kalle Valo:
>
>> I was told that on Dell XPS 15 (with a working QCA6390 setup) there's =
a
>> separate "Virtualisation" setting in BIOS. See if you have that and tr=
y
>> enabling it.
> I was informed about another setting to test: try disabling "Enable
> Secure Boot" in the BIOS. I don't know yet why it would help, but that'=
s
> what few people have recommended.
>
> Please let me know how it goes.
>
I have two options under "Virtualization" in the BIOS: "Enable Intel=20
Virtualization Technology (VT)" and "VT for Direct I/O". Both were=20
enabled. Secure boot was also turned off. BIOS version is also at the=20
most current version 1.1.1. Because of the dmesg errors Thomas Gleixner=20
mentioned, I assume it would be best to contact Dell directly (even if=20
I'm not sure if and how fast they will respond). If the driver would=20
manage to work with only 1 vector, I assume this would also make it work =

on my configuration, even with possible performance hits.

Best,

Thomas