On Sun, Jul 02, 2023 at 03:50:52PM -0400, Sasha Levin wrote: > From: Kristina Martsenko <kristina.martsenko@xxxxxxx> > > [ Upstream commit b0c756fe996ac930033882ca56410639e5cad1ec ] > > Detect if the system has the new HCRX_EL2 register added in ARMv8.7/9.2, > so that subsequent patches can check for its presence. > > KVM currently relies on the register being present on all CPUs (or > none), so the kernel will panic if that is not the case. Fortunately no > such systems currently exist, but this can be revisited if they appear. > Note that the kernel will not panic if CONFIG_KVM is disabled. This is a new feature, it's not clear why we'd backport it (especially since it's a new feature which is a dependency for other features rather than something that people can use outside of the kernel)?
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