Hi Richard, On 5/28/26 7:23 PM, Richard Cheng wrote: > aarch64 has no vendor_id in /proc/cpuinfo, so detect_vendor() returns 0 > and arch_supports_noncont_cat() falls through to "return false". > L3_NONCONT_CAT therefore spuriously fails on every ARM MPAM platform. > > Define ARCH_ARM, short-circuit detect_vendor() to it on aarch64, and > add it to the AMD/Hygon always-supports early-out in > arch_supports_noncont_cat(). > > aarch64 has many implementers (ARM 0x41, NVIDIA 0x43, etc.), but MPAM > mandates non-contiguous CPBM uniformly, so per-implementer handling is > not needed here. > > Signed-off-by: Richard Cheng <[email protected]> > ---
Reviewed-by: Reinette Chatre <[email protected]> Reinette
