}
}
-/* function is called when global control register has been updated. */
-static void global_ctrl_changed(struct kvm_pmu *pmu, u64 data)
+static void reprogram_counters(struct kvm_pmu *pmu, u64 diff)
{
int bit;
- u64 diff = pmu->global_ctrl ^ data;
struct kvm_pmc *pmc;
- pmu->global_ctrl = data;
-
for_each_set_bit(bit, (unsigned long *)&diff, X86_PMC_IDX_MAX) {
pmc = intel_pmc_idx_to_pmc(pmu, bit);
if (pmc)
struct kvm_pmc *pmc;
u32 msr = msr_info->index;
u64 data = msr_info->data;
- u64 reserved_bits;
+ u64 reserved_bits, diff;
switch (msr) {
case MSR_CORE_PERF_FIXED_CTR_CTRL:
if (pmu->global_ctrl == data)
return 0;
if (kvm_valid_perf_global_ctrl(pmu, data)) {
- global_ctrl_changed(pmu, data);
+ diff = pmu->global_ctrl ^ data;
+ pmu->global_ctrl = data;
+ reprogram_counters(pmu, diff);
return 0;
}
break;