On Fri, Apr 27, 2018 at 08:18:10PM -0700, Matthew Wilcox wrote: > On Fri, Apr 27, 2018 at 05:15:26PM -0700, Luis R. Rodriguez wrote: > > Some architectures do not define PAGE_KERNEL_RO, best we can do > > for them is to provide a fallback onto PAGE_KERNEL. Remove the > > hack from the firmware loader and move it onto the asm-generic > > header, and document while at it the affected architectures > > which do not have a PAGE_KERNEL_RO: > > > > o alpha > > o ia64 > > o m68k > > o mips > > o sparc64 > > o sparc > > ia64 doesn't have it? > > *fx: riffles through architecture book* > > That seems like an oversight of the Linux port. Tony, Fenghua, any thoughts? Poke *Tony, Fenghua* ? > (also, Luis, maybe move the PAGE_KERNEL_EXEC fallback the same way you > moved the PAGE_KERNEL_RO fallback?) Done. Will queue in the generic PAGE_KERNEL_EXEC patch to my series. > --- >8 --- > > ia64: Add PAGE_KERNEL_RO and PAGE_KERNEL_EXEC > > The rest of the kernel was falling back to simple PAGE_KERNEL pages; using > PAGE_KERNEL_RO and PAGE_KERNEL_EXEC provide better protection against > unintended writes. > > Signed-off-by: Matthew Wilcox <mawilcox@xxxxxxxxxxxxx> Nice, should I queue this into my series as well? Luis
