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c017e49ed1
Add support for GICv3 compat mode (FEAT_GCIE_LEGACY) which allows a GICv5 host to run GICv3-based VMs. This change enables the VHE/nVHE/hVHE/protected modes, but does not support nested virtualization. A lazy-disable approach is taken for compat mode; it is enabled on the vgic_v3_load path but not disabled on the vgic_v3_put path. A non-GICv3 VM, i.e., one based on GICv5, is responsible for disabling compat mode on the corresponding vgic_v5_load path. Currently, GICv5 is not supported, and hence compat mode is not disabled again once it is enabled, and this function is intentionally omitted from the code. Co-authored-by: Timothy Hayes <timothy.hayes@arm.com> Signed-off-by: Timothy Hayes <timothy.hayes@arm.com> Signed-off-by: Sascha Bischoff <sascha.bischoff@arm.com> Link: https://lore.kernel.org/r/20250627100847.1022515-5-sascha.bischoff@arm.com Signed-off-by: Oliver Upton <oliver.upton@linux.dev> |
History
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| .. | ||
| acpi | ||
| asm-generic | ||
| clocksource | ||
| crypto | ||
| cxl | ||
| drm | ||
| dt-bindings | ||
| hyperv | ||
| keys | ||
| kunit | ||
| kvm | ||
| linux | ||
| math-emu | ||
| media | ||
| memory | ||
| misc | ||
| net | ||
| pcmcia | ||
| ras | ||
| rdma | ||
| rv | ||
| scsi | ||
| soc | ||
| sound | ||
| target | ||
| trace | ||
| uapi | ||
| ufs | ||
| vdso | ||
| video | ||
| xen | ||
| Kbuild | ||