On Mon, May 13, 2019 at 11:18:41AM -0700, Andy Lutomirski wrote: > On Mon, May 13, 2019 at 7:39 AM Alexandre Chartre > <alexandre.chartre@xxxxxxxxxx> wrote: > > > > pcpu_base_addr is already mapped to the KVM address space, but this > > represents the first percpu chunk. To access a per-cpu buffer not > > allocated in the first chunk, add a function which maps all cpu > > buffers corresponding to that per-cpu buffer. > > > > Also add function to clear page table entries for a percpu buffer. > > > > This needs some kind of clarification so that readers can tell whether > you're trying to map all percpu memory or just map a specific > variable. In either case, you're making a dubious assumption that > percpu memory contains no secrets. I'm thinking the per-cpu random pool is a secrit. IOW, it demonstrably does contain secrits, invalidating that premise.
