Messages in this thread | | | Date | Mon, 3 Jul 2023 12:51:57 +0100 | From | Mark Brown <> | Subject | Re: [PATCH AUTOSEL 6.4 07/12] arm64: cpufeature: detect FEAT_HCX |
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On Sun, Jul 02, 2023 at 03:50:52PM -0400, Sasha Levin wrote: > From: Kristina Martsenko <kristina.martsenko@arm.com> > > [ 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)? [unhandled content-type:application/pgp-signature] | |