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1438921c6d
If L1 and L2 share VPID (because L1 don't use VPID or we haven't allocated a vpid02), we need to flush TLB on L1<->L2 transitions. Before this patch, this TLB flushing was done by vmx_flush_tlb(). If L0 use EPT, this will translate into INVEPT(active_eptp); However, if L1 use EPT, in L1->L2 VMEntry, active EPTP is EPTP01 but TLB entries populated by L2 are tagged with EPTP02. Therefore we should delay vmx_flush_tlb() until active_eptp is EPTP02. To achieve this, instead of directly calling vmx_flush_tlb() we request it to be called by KVM_REQ_TLB_FLUSH which is evaluated after KVM_REQ_LOAD_CR3 which sets the active_eptp to EPTP02 as required. Similarly, on L2->L1 VMExit, active EPTP is EPTP02 but TLB entries populated by L1 are tagged with EPTP01 and therefore we should delay vmx_flush_tlb() until active_eptp is EPTP01. Reviewed-by: Mihai Carabas <mihai.carabas@oracle.com> Reviewed-by: Darren Kenny <darren.kenny@oracle.com> Reviewed-by: Nikita Leshenko <nikita.leshchenko@oracle.com> Signed-off-by: Liran Alon <liran.alon@oracle.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
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| boot | ||
| configs | ||
| crypto | ||
| entry | ||
| events | ||
| hyperv | ||
| ia32 | ||
| include | ||
| kernel | ||
| kvm | ||
| lib | ||
| math-emu | ||
| mm | ||
| net | ||
| oprofile | ||
| pci | ||
| platform | ||
| power | ||
| purgatory | ||
| ras | ||
| realmode | ||
| tools | ||
| um | ||
| video | ||
| xen | ||
| .gitignore | ||
| Kbuild | ||
| Kconfig | ||
| Kconfig.cpu | ||
| Kconfig.debug | ||
| Makefile | ||
| Makefile_32.cpu | ||
| Makefile.um | ||