I tried to use the patches (regardless of PEBS).
When the host uses huge-pages, I get an a oops.
I did not delve into the patch details, but I think there is some mess
with the indexes - see below:
On 6/19/14, 2:12 AM, mtosatti@xxxxxxxxxx wrote:
+
+static bool direct_pin_sptes(struct kvm_vcpu *vcpu, gfn_t gfn)
+{
+ u64 *sptes[4];
+ int r, i, level;
+
+ r = get_sptep_hierarchy(vcpu, gfn << PAGE_SHIFT, sptes);
+ if (!r)
+ return false;
+
+ level = 5 - r;
+ if (!is_last_spte(*sptes[r-1], level))
should be *sptes[level-1]
+ return false;
+ if (!is_shadow_present_pte(*sptes[r-1]))
should be *sptes[level-1]
+ return false;
+
+ for (i = 0; i < r; i++) {
+ u64 *sptep = sptes[i];
should be sptes[3 - i];
+ struct kvm_mmu_page *sp = page_header(__pa(sptep));
+
+ sp->pinned = true;
+ set_bit(SPTE_PINNED_BIT, (unsigned long *)sptep);
+ }
+
+ return true;
+}
Regards,
Nadav
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