parisc: Add runtime check to prevent PA2.0 kernels on PA1.x machines
[ Upstream commit 591d2108 ] If a 32-bit kernel was compiled for PA2.0 CPUs, it won't be able to run on machines with PA1.x CPUs. Add a check and bail out early if a PA1.x machine is detected. Signed-off-by: Helge Deller <deller@gmx.de> Signed-off-by: Sasha Levin <sashal@kernel.org>
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