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SubjectSME/32-bit regression
It appears there is a regression for 32-bit kernels due to SME changes.

I bisected my particular problem (Xen PV guest) to
21729f81ce8ae76a6995681d40e16f7ce8075db4 but I also saw pmd_clear_bad()
errors on baremetal. This seems to be caused by sme_me_mask being an
unsigned long as opposed to phys_addr_t (the actual problem is that
__PHYSICAL_MASK is truncated). When I declare it as u64 and drop
unsigned long cast in __sme_set()/__sme_clr() the problem goes way.
(This presumably won't work for non-PAE which I haven't tried).


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