diff options
| -rw-r--r-- | arch/x86/kernel/cpu/resctrl/core.c | 7 | ||||
| -rw-r--r-- | include/linux/resctrl.h | 3 |
2 files changed, 10 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/resctrl/core.c b/arch/x86/kernel/cpu/resctrl/core.c index 2b2935b3df8d..3792ab4819dc 100644 --- a/arch/x86/kernel/cpu/resctrl/core.c +++ b/arch/x86/kernel/cpu/resctrl/core.c @@ -274,6 +274,11 @@ static void rdt_get_cdp_config(int level) rdt_resources_all[level].r_resctrl.cdp_capable = true; } +static void rdt_set_io_alloc_capable(struct rdt_resource *r) +{ + r->cache.io_alloc_capable = true; +} + static void rdt_get_cdp_l3_config(void) { rdt_get_cdp_config(RDT_RESOURCE_L3); @@ -855,6 +860,8 @@ static __init bool get_rdt_alloc_resources(void) rdt_get_cache_alloc_cfg(1, r); if (rdt_cpu_has(X86_FEATURE_CDP_L3)) rdt_get_cdp_l3_config(); + if (rdt_cpu_has(X86_FEATURE_SDCIAE)) + rdt_set_io_alloc_capable(r); ret = true; } if (rdt_cpu_has(X86_FEATURE_CAT_L2)) { diff --git a/include/linux/resctrl.h b/include/linux/resctrl.h index a7d92718b653..533f240dbe21 100644 --- a/include/linux/resctrl.h +++ b/include/linux/resctrl.h @@ -206,6 +206,8 @@ struct rdt_mon_domain { * @arch_has_sparse_bitmasks: True if a bitmask like f00f is valid. * @arch_has_per_cpu_cfg: True if QOS_CFG register for this cache * level has CPU scope. + * @io_alloc_capable: True if portion of the cache can be configured + * for I/O traffic. */ struct resctrl_cache { unsigned int cbm_len; @@ -213,6 +215,7 @@ struct resctrl_cache { unsigned int shareable_bits; bool arch_has_sparse_bitmasks; bool arch_has_per_cpu_cfg; + bool io_alloc_capable; }; /** |