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References: <20200804124417.27102-1-alex.bennee@linaro.org>
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From:   Ard Biesheuvel <ardb@kernel.org>
Date:   Tue, 4 Aug 2020 15:18:02 +0200
Message-ID: <CAMj1kXErSf7sQ4pPu-1em4AM=9JejA_-w3iwv4Wt=dgbQHxp-g@mail.gmail.com>
Subject: Re: [RFC PATCH v1 0/3] put arm64 kvm_config on a diet
To:     =?UTF-8?B?QWxleCBCZW5uw6ll?= <alex.bennee@linaro.org>
Cc:     kvm@vger.kernel.org,
        Linux ARM <linux-arm-kernel@lists.infradead.org>,
        Marc Zyngier <maz@kernel.org>,
        Christoffer Dall <christoffer.dall@arm.com>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        kvmarm <kvmarm@lists.cs.columbia.edu>
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On Tue, 4 Aug 2020 at 14:45, Alex Benn=C3=A9e <alex.bennee@linaro.org> wrot=
e:
>
> Hi,
>
> When building guest kernels for virtualisation we were bringing in a
> bunch of stuff from physical hardware which we don't need for our
> idealised fixable virtual PCI devices. This series makes some Kconfig
> changes to allow the ThunderX and XGene PCI drivers to be compiled
> out. It also drops PCI_QUIRKS from the KVM guest build as a virtual
> PCI device should be quirk free.
>

What about PCI passthrough?

> This is my first time hacking around Kconfig so I hope I've got the
> balance between depends and selects right but please let be know if it
> could be specified in a cleaner way.
>
> Alex Benn=C3=A9e (3):
>   arm64: allow de-selection of ThunderX PCI controllers
>   arm64: gate the whole of pci-xgene on CONFIG_PCI_XGENE
>   kernel/configs: don't include PCI_QUIRKS in KVM guest configs
>
>  arch/arm64/Kconfig.platforms    | 2 ++
>  arch/arm64/configs/defconfig    | 1 +
>  drivers/pci/controller/Kconfig  | 7 +++++++
>  drivers/pci/controller/Makefile | 8 +++-----
>  kernel/configs/kvm_guest.config | 1 +
>  5 files changed, 14 insertions(+), 5 deletions(-)
>
> --
> 2.20.1
>
>
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