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| author | Tomita Moeko <tomitamoeko@gmail.com> | 2025-05-06 01:02:58 +0800 |
|---|---|---|
| committer | Cédric Le Goater <clg@redhat.com> | 2025-05-09 12:42:27 +0200 |
| commit | 1d5f84f349d27f1d3ea6a0a6261253269fc1cf68 (patch) | |
| tree | 39e802d45b38ba8df46d5fa77cb465b9b301edce /scripts/update-linux-headers.sh | |
| parent | dd69d846046f697863ebbd18f9a3544d36720476 (diff) | |
| download | focaccia-qemu-1d5f84f349d27f1d3ea6a0a6261253269fc1cf68.tar.gz focaccia-qemu-1d5f84f349d27f1d3ea6a0a6261253269fc1cf68.zip | |
vfio/igd: Always emulate ASLS (OpRegion) register
ASLS register represents the base address of OpRegion, and it is programmed with HPA. In IGD passthrough scenario, it needs to be reprogrammed with GPA by guest firmware. To prevent guest accessing wrong memory range, ASLS should always be emulated and cleared. In GVT-g scenario, emulating ASLS is unnecessary as access is handled by kvmgt backend [1]. [1]: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/gpu/drm/i915/gvt/cfg_space.c?h=v6.14#n295 Signed-off-by: Tomita Moeko <tomitamoeko@gmail.com> Reviewed-by: Corvin Köhne <c.koehne@beckhoff.com> Reviewed-by: Alex Williamson <alex.williamson@redhat.com> Tested-by: Alex Williamson <alex.williamson@redhat.com> Link: https://lore.kernel.org/qemu-devel/20250505170305.23622-3-tomitamoeko@gmail.com Signed-off-by: Cédric Le Goater <clg@redhat.com>
Diffstat (limited to 'scripts/update-linux-headers.sh')
0 files changed, 0 insertions, 0 deletions