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Diffstat (limited to 'arch/x86/kernel/cpu/resctrl/rdtgroup.c')
-rw-r--r--arch/x86/kernel/cpu/resctrl/rdtgroup.c14
1 files changed, 8 insertions, 6 deletions
diff --git a/arch/x86/kernel/cpu/resctrl/rdtgroup.c b/arch/x86/kernel/cpu/resctrl/rdtgroup.c
index 69a1de9238..2b69e560b0 100644
--- a/arch/x86/kernel/cpu/resctrl/rdtgroup.c
+++ b/arch/x86/kernel/cpu/resctrl/rdtgroup.c
@@ -1620,12 +1620,6 @@ static int mbm_config_write_domain(struct rdt_resource *r,
struct mon_config_info mon_info = {0};
int ret = 0;
- /* mon_config cannot be more than the supported set of events */
- if (val > MAX_EVT_CONFIG_BITS) {
- rdt_last_cmd_puts("Invalid event configuration\n");
- return -EINVAL;
- }
-
/*
* Read the current config value first. If both are the same then
* no need to write it again.
@@ -1663,6 +1657,7 @@ out:
static int mon_config_write(struct rdt_resource *r, char *tok, u32 evtid)
{
+ struct rdt_hw_resource *hw_res = resctrl_to_arch_res(r);
char *dom_str = NULL, *id_str;
unsigned long dom_id, val;
struct rdt_domain *d;
@@ -1686,6 +1681,13 @@ next:
return -EINVAL;
}
+ /* Value from user cannot be more than the supported set of events */
+ if ((val & hw_res->mbm_cfg_mask) != val) {
+ rdt_last_cmd_printf("Invalid event configuration: max valid mask is 0x%02x\n",
+ hw_res->mbm_cfg_mask);
+ return -EINVAL;
+ }
+
list_for_each_entry(d, &r->domains, list) {
if (d->id == dom_id) {
ret = mbm_config_write_domain(r, d, evtid, val);