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From: Alex Williamson <alex.williamson@redhat.com>
To: Tomita Moeko <tomitamoeko@gmail.com>
Cc: "Cédric Le Goater" <clg@redhat.com>,
	qemu-devel@nongnu.org, "Corvin Köhne" <corvin.koehne@gmail.com>
Subject: Re: [PATCH v2 7/9] vfio/igd: Decouple common quirks from legacy mode
Date: Mon, 3 Mar 2025 19:33:58 -0700	[thread overview]
Message-ID: <20250303193358.22e93640.alex.williamson@redhat.com> (raw)
In-Reply-To: <20250303175220.74917-8-tomitamoeko@gmail.com>

On Tue,  4 Mar 2025 01:52:17 +0800
Tomita Moeko <tomitamoeko@gmail.com> wrote:

> diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c
> index a58d555934..b0620a0ae8 100644
> --- a/hw/vfio/pci.c
> +++ b/hw/vfio/pci.c
> @@ -3363,6 +3363,8 @@ static const Property vfio_pci_dev_properties[] = {
>                      VFIO_FEATURE_ENABLE_REQ_BIT, true),
>      DEFINE_PROP_BIT("x-igd-opregion", VFIOPCIDevice, features,
>                      VFIO_FEATURE_ENABLE_IGD_OPREGION_BIT, false),
> +    DEFINE_PROP_BIT("x-igd-legacy-mode", VFIOPCIDevice, features,
> +                    VFIO_FEATURE_ENABLE_IGD_LEGACY_MODE_BIT, true),

Shouldn't this be an on/off/auto property with default set to auto?
That way we can have a soft fail when set to "auto" and requirements
don't align, and a hard fail when set to "on".  Thanks,

Alex



  reply	other threads:[~2025-03-04  2:35 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-03-03 17:52 [PATCH v2 0/9] vfio/igd: Decoupling quirks with legacy mode Tomita Moeko
2025-03-03 17:52 ` [PATCH v2 1/9] vfio/igd: Remove GTT write quirk in IO BAR 4 Tomita Moeko
2025-03-03 17:52 ` [PATCH v2 2/9] vfio/igd: Do not include GTT stolen size in etc/igd-bdsm-size Tomita Moeko
2025-03-04  7:17   ` Corvin Köhne
2025-03-04 17:09     ` Tomita Moeko
2025-03-03 17:52 ` [PATCH v2 3/9] vfio/igd: Consolidate OpRegion initialization into a single function Tomita Moeko
2025-03-03 17:52 ` [PATCH v2 4/9] vfio/igd: Move LPC bridge initialization to a separate function Tomita Moeko
2025-03-03 17:52 ` [PATCH v2 5/9] vfio/pci: Add placeholder for device-specific config space quirks Tomita Moeko
2025-03-03 17:52 ` [PATCH v2 6/9] vfio/igd: Refactor vfio_probe_igd_bar4_quirk into pci config quirk Tomita Moeko
2025-03-03 17:52 ` [PATCH v2 7/9] vfio/igd: Decouple common quirks from legacy mode Tomita Moeko
2025-03-04  2:33   ` Alex Williamson [this message]
2025-03-04  8:07   ` Corvin Köhne
2025-03-04  8:15     ` Corvin Köhne
2025-03-03 17:52 ` [PATCH v2 8/9] vfio/igd: Handle x-igd-opregion option in config quirk Tomita Moeko
2025-03-03 17:52 ` [PATCH v2 9/9] vfio/igd: Introduce x-igd-lpc option for LPC bridge ID quirk Tomita Moeko
2025-03-06  5:50 ` [PATCH v2 0/9] vfio/igd: Decoupling quirks with legacy mode Cédric Le Goater

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