From 9bce6e94c4b39b6baa649784d92f908aa9168a45 Mon Sep 17 00:00:00 2001 From: Tony Luck Date: Thu, 31 Oct 2024 15:02:13 -0700 Subject: [PATCH] x86/resctrl: Support Sub-NUMA cluster mode SNC6 Support Sub-NUMA cluster mode with 6 nodes per L3 cache (SNC6) on some Intel platforms. Signed-off-by: Tony Luck Signed-off-by: Borislav Petkov (AMD) Reviewed-by: Reinette Chatre Link: https://lore.kernel.org/r/20241031220213.17991-1-tony.luck@intel.com --- arch/x86/kernel/cpu/resctrl/monitor.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/x86/kernel/cpu/resctrl/monitor.c b/arch/x86/kernel/cpu/resctrl/monitor.c index 851b561850e0c..5fcb3d635d915 100644 --- a/arch/x86/kernel/cpu/resctrl/monitor.c +++ b/arch/x86/kernel/cpu/resctrl/monitor.c @@ -1158,11 +1158,12 @@ static __init int snc_get_config(void) ret = cpus_per_l3 / cpus_per_node; - /* sanity check: Only valid results are 1, 2, 3, 4 */ + /* sanity check: Only valid results are 1, 2, 3, 4, 6 */ switch (ret) { case 1: break; case 2 ... 4: + case 6: pr_info("Sub-NUMA Cluster mode detected with %d nodes per L3 cache\n", ret); rdt_resources_all[RDT_RESOURCE_L3].r_resctrl.mon_scope = RESCTRL_L3_NODE; break; -- 2.47.3