unsigned long vsid;
long err;
- if (vcpu->arch.fault_dsisr == HDSISR_CANARY) {
+ if (cpu_has_feature(CPU_FTR_P9_RADIX_PREFETCH_BUG) &&
+ unlikely(vcpu->arch.fault_dsisr == HDSISR_CANARY)) {
r = RESUME_GUEST; /* Just retry if it's the canary */
break;
}
* HDSI which should correctly update the HDSISR the second time HDSI
* entry.
*
- * Just do this on all p9 processors for now.
+ * The "radix prefetch bug" test can be used to test for this bug, as
+ * it also exists fo DD2.1 and below.
*/
- mtspr(SPRN_HDSISR, HDSISR_CANARY);
+ if (cpu_has_feature(CPU_FTR_P9_RADIX_PREFETCH_BUG))
+ mtspr(SPRN_HDSISR, HDSISR_CANARY);
mtspr(SPRN_SPRG0, vcpu->arch.shregs.sprg0);
mtspr(SPRN_SPRG1, vcpu->arch.shregs.sprg1);