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| author | Avi Kivity <avi@redhat.com> | 2009-07-06 12:21:32 +0300 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2009-09-10 08:33:09 +0300 |
| commit | 07420171593908406c3a59d6f884d426a921a5ea (patch) | |
| tree | 987488098509c4687ed8898c44d0bf4e061c1b4f /arch/x86/kvm/paging_tmpl.h | |
| parent | dc7e795e3dd2a763e5ceaa1615f307e808cf3932 (diff) | |
| download | linux-07420171593908406c3a59d6f884d426a921a5ea.tar.gz linux-07420171593908406c3a59d6f884d426a921a5ea.tar.bz2 linux-07420171593908406c3a59d6f884d426a921a5ea.zip | |
KVM: MMU: Trace guest pagetable walker
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86/kvm/paging_tmpl.h')
| -rw-r--r-- | arch/x86/kvm/paging_tmpl.h | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h index 53e129cec5fd..36ac6d70a847 100644 --- a/arch/x86/kvm/paging_tmpl.h +++ b/arch/x86/kvm/paging_tmpl.h @@ -125,13 +125,15 @@ static int FNAME(walk_addr)(struct guest_walker *walker, gpa_t pte_gpa; int rsvd_fault = 0; - pgprintk("%s: addr %lx\n", __func__, addr); + trace_kvm_mmu_pagetable_walk(addr, write_fault, user_fault, + fetch_fault); walk: walker->level = vcpu->arch.mmu.root_level; pte = vcpu->arch.cr3; #if PTTYPE == 64 if (!is_long_mode(vcpu)) { pte = kvm_pdptr_read(vcpu, (addr >> 30) & 3); + trace_kvm_mmu_paging_element(pte, walker->level); if (!is_present_gpte(pte)) goto not_present; --walker->level; @@ -150,10 +152,9 @@ walk: pte_gpa += index * sizeof(pt_element_t); walker->table_gfn[walker->level - 1] = table_gfn; walker->pte_gpa[walker->level - 1] = pte_gpa; - pgprintk("%s: table_gfn[%d] %lx\n", __func__, - walker->level - 1, table_gfn); kvm_read_guest(vcpu->kvm, pte_gpa, &pte, sizeof(pte)); + trace_kvm_mmu_paging_element(pte, walker->level); if (!is_present_gpte(pte)) goto not_present; @@ -175,6 +176,8 @@ walk: #endif if (!(pte & PT_ACCESSED_MASK)) { + trace_kvm_mmu_set_accessed_bit(table_gfn, index, + sizeof(pte)); mark_page_dirty(vcpu->kvm, table_gfn); if (FNAME(cmpxchg_gpte)(vcpu->kvm, table_gfn, index, pte, pte|PT_ACCESSED_MASK)) @@ -208,6 +211,7 @@ walk: if (write_fault && !is_dirty_gpte(pte)) { bool ret; + trace_kvm_mmu_set_dirty_bit(table_gfn, index, sizeof(pte)); mark_page_dirty(vcpu->kvm, table_gfn); ret = FNAME(cmpxchg_gpte)(vcpu->kvm, table_gfn, index, pte, pte|PT_DIRTY_MASK); @@ -239,6 +243,7 @@ err: walker->error_code |= PFERR_FETCH_MASK; if (rsvd_fault) walker->error_code |= PFERR_RSVD_MASK; + trace_kvm_mmu_walker_error(walker->error_code); return 0; } |