> From: Moger, Babu [mailto:Babu.Moger@xxxxxxx] > Subject: [PATCH v7 11/13] arch/x86: Introduce QOS feature for AMD > The specification for this feature is available at > https://developer.amd.com/wp-content/resources/56375.pdf > +bool cbm_validate_amd(char *buf, u32 *data, struct rdt_resource *r) { > + if (val > r->default_ctrl) { > + rdt_last_cmd_puts("mask out of range\n"); > + return false; > + } If val is zero, then this closid cannot allocate any cache line. I'm wondering: does that mean the tasks running with this closid directly access memory without cache? Is there any usage for this situation? Thanks. -Fenghua
