> > Page size: > > - 64/4K? (AArch64 Fedora/Red Hat kernels will differ: 4K for Fedora > > for now, 64K for RH, there are a few issues with 64K left for triage) > > Fedora is 64K pages on aarch64, not 4K as noted. It's needed for AMD > Seattle support.
You can use 4K pages with Seattle, you just have to use 4-level (48-bit VA) tables in order for the idmap to be able to address the physical memory. Ard Biesheuvel has some patches [1,2] which will allow the idmap to use 4 levels while keeping the rest of the tables as 3-level, which should alleviate any performance impact 4-level tables could have. Hopefully those will be upstream shortly. Thanks, Mark. [1] http://lists.infradead.org/pipermail/linux-arm-kernel/2015-March/328541.html [2] http://lists.infradead.org/pipermail/linux-arm-kernel/2015-March/328542.html _______________________________________________ cross-distro mailing list cross-distro@lists.linaro.org http://lists.linaro.org/mailman/listinfo/cross-distro
