* Matt Fleming <matt@xxxxxxxxxxxxxxxxxxx> wrote: > Folks, > > This patch series is a response to the report that the EFI region > mappings trigger warnings when booting with CONFIG_DEBUG_WX enabled. > They allocate a new page table structure and ensure that all the > mappings we require during EFI runtime calls are only setup there. > > It turns out that it still makes sense to share some page table > entries with 'swapper_pg_dir', just not the entries where we need to > allow security lax permissions. Sharing entries is useful for memory > hotplug, for example. > > When writing this series I discovered a number of bugs in the existing > code that only became apparent when we stopped using 'trampoline_pgd' > which already mapped a bunch of things for us. I've put those bug > fixes at the start of the series. > > Further testing would be very much appreciated as this is a > notoriously funky area of the EFI code. Ok, this series looks great to me - I've applied this to tip:x86/efi and will push it out to linux-next after it passes some local testing. There should be time enough before v4.5 to figure out potential bugs. Thanks, Ingo -- To unsubscribe from this list: send the line "unsubscribe linux-efi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
