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e651976667
KVM currently does not trap ID register accesses from an AArch32 EL1. This is painful for a couple of reasons. Certain unimplemented features are visible to AArch32 EL1, as we limit PMU to version 3 and the debug architecture to v8.0. Additionally, we attempt to paper over heterogeneous systems by using register values that are safe system-wide. All this hard work is completely sidestepped because KVM does not set TID3 for AArch32 guests. Fix up handling of CP15 feature registers by simply rerouting to their AArch64 aliases. Punt setting HCR_EL2.TID3 to a later change, as we need to fix up the oddball CP10 feature registers still. Signed-off-by: Oliver Upton <oupton@google.com> Reviewed-by: Reiji Watanabe <reijiw@google.com> Signed-off-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20220503060205.2823727-4-oupton@google.com |
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| .. | ||
| boot | ||
| configs | ||
| crypto | ||
| hyperv | ||
| include | ||
| kernel | ||
| kvm | ||
| lib | ||
| mm | ||
| net | ||
| tools | ||
| xen | ||
| Kbuild | ||
| Kconfig | ||
| Kconfig.debug | ||
| Kconfig.platforms | ||
| Makefile | ||