Zachary Amsden wrote: > No, it doesn't exist under PAE, since PAE uses a common pgd[3] > therefore the init_mm pgd never needs changing for large page / split > page PD transitions. The code is there for non-PAE, but compiled out > of the PAE version. Yep, but it would work if it were restored, right. I'm adding SHARED_KERNEL_PMD to replace all the tests on PTRS_PER_PMD, and a shared_kernel_pmd flag to pvops. J