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vfio/igd: Introduce x-igd-lpc option for LPC bridge ID quirk

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The LPC bridge/Host bridge IDs quirk is also not dependent on legacy
mode. Recent Windows driver no longer depends on these IDs, as well as
Linux i915 driver, while UEFI GOP seems still needs them. Make it an
option to allow users enabling and disabling it as needed.

Signed-off-by: Tomita Moeko <tomitamoeko@gmail.com>
Reviewed-by: Alex Williamson <alex.williamson@redhat.com>
Tested-by: Alex Williamson <alex.williamson@redhat.com>
Reviewed-by: Corvin Köhne <c.koehne@beckhoff.com>
Link: https://lore.kernel.org/qemu-devel/20250306180131.32970-10-tomitamoeko@gmail.com
[ clg: - Fixed spelling in vfio_probe_igd_config_quirk() ]
Signed-off-by: Cédric Le Goater <clg@redhat.com>
This commit is contained in:
Tomita Moeko 2025-03-07 02:01:29 +08:00 • committed by Cédric Le Goater
parent 434ac62ef2
commit 674f61117d
3 changed files with 13 additions and 6 deletions
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3
hw/vfio/pci.h
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@ -154,6 +154,9 @@ struct VFIOPCIDevice {
#define VFIO_FEATURE_ENABLE_IGD_OPREGION_BIT 2
#define VFIO_FEATURE_ENABLE_IGD_OPREGION \
(1 << VFIO_FEATURE_ENABLE_IGD_OPREGION_BIT)
#define VFIO_FEATURE_ENABLE_IGD_LPC_BIT 3
#define VFIO_FEATURE_ENABLE_IGD_LPC \
(1 << VFIO_FEATURE_ENABLE_IGD_LPC_BIT)
OnOffAuto display;
uint32_t display_xres;
uint32_t display_yres;