On Wed, Feb 14, 2018 at 11:29 AM, Kees Cook <[email protected]> wrote: > Why does using finer granularity on the physmap degrade performance? I > assume TLB pressure, but what is heavily using that area? (I must not > be understanding what physmap actually gets used for -- I thought it > was just a convenience to have a 1:1 virt/phys map for some lookups?)
Jann has sorted me out: it's that physmap isn't an _alias_ for the buddy allocator memory areas; it's used directly. -Kees -- Kees Cook Pixel Security
