![]() Although we've implemented PSCI 0.1, 0.2 and 1.0, we expose either 0.1 or 1.0 to a guest, defaulting to the latest version of the PSCI implementation that is compatible with the requested version. This is no different from doing a firmware upgrade on KVM. But in order to give a chance to hypothetical badly implemented guests that would have a fit by discovering something other than PSCI 0.2, let's provide a new API that allows userspace to pick one particular version of the API. This is implemented as a new class of "firmware" registers, where we expose the PSCI version. This allows the PSCI version to be save/restored as part of a guest migration, and also set to any supported version if the guest requires it. Cc: stable@vger.kernel.org #4.16 Reviewed-by: Christoffer Dall <cdall@kernel.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> |
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auxvec.h | ||
bitsperlong.h | ||
bpf_perf_event.h | ||
byteorder.h | ||
fcntl.h | ||
hwcap.h | ||
Kbuild | ||
kvm.h | ||
param.h | ||
perf_regs.h | ||
posix_types.h | ||
ptrace.h | ||
setup.h | ||
sigcontext.h | ||
siginfo.h | ||
signal.h | ||
stat.h | ||
statfs.h | ||
ucontext.h | ||
unistd.h |