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| -rw-r--r-- | Documentation/virtual/kvm/mmu.txt | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/virtual/kvm/mmu.txt b/Documentation/virtual/kvm/mmu.txt index 0aa8e0e34119..42193f206602 100644 --- a/Documentation/virtual/kvm/mmu.txt +++ b/Documentation/virtual/kvm/mmu.txt | |||
| @@ -277,6 +277,9 @@ Handling a page fault is performed as follows: | |||
| 277 | - walk shadow page table | 277 | - walk shadow page table |
| 278 | - cache the information to vcpu->arch.mmio_gva, vcpu->arch.access and | 278 | - cache the information to vcpu->arch.mmio_gva, vcpu->arch.access and |
| 279 | vcpu->arch.mmio_gfn, and call the emulator | 279 | vcpu->arch.mmio_gfn, and call the emulator |
| 280 | - If both P bit and R/W bit of error code are set, this could possibly | ||
| 281 | be handled as a "fast page fault" (fixed without taking the MMU lock). See | ||
| 282 | the description in Documentation/virtual/kvm/locking.txt. | ||
| 280 | - if needed, walk the guest page tables to determine the guest translation | 283 | - if needed, walk the guest page tables to determine the guest translation |
| 281 | (gva->gpa or ngpa->gpa) | 284 | (gva->gpa or ngpa->gpa) |
| 282 | - if permissions are insufficient, reflect the fault back to the guest | 285 | - if permissions are insufficient, reflect the fault back to the guest |