On Tue, Sep 15, 2020 at 11:16:08PM +0200, Andrey Konovalov wrote: > From: Vincenzo Frascino <vincenzo.frascino@xxxxxxx> > > The gcr_user mask is a per thread mask that represents the tags that are > excluded from random generation when the Memory Tagging Extension is > present and an 'irg' instruction is invoked. > > gcr_user affects the behavior on EL0 only. > > Currently that mask is an include mask and it is controlled by the user > via prctl() while GCR_EL1 accepts an exclude mask. > > Convert the include mask into an exclude one to make it easier the > register setting. > > Note: This change will affect gcr_kernel (for EL1) introduced with a > future patch. > > Signed-off-by: Vincenzo Frascino <vincenzo.frascino@xxxxxxx> > Signed-off-by: Andrey Konovalov <andreyknvl@xxxxxxxxxx> Reviewed-by: Catalin Marinas <catalin.marinas@xxxxxxx>
