Jim/Paolo/Radim, Any complains about the current API? (introduced in 4/10) I have more patches on top and I would like to ensure that this is agreed upon at least before sending more revisions/patches. Also 1, 2, and 3 should be a bit straight forward and does not use this API. Thanks. On Wed, 2018-02-21 at 18:47 +0100, KarimAllah Ahmed wrote: > For the most part, KVM can handle guest memory that does not have a struct > page (i.e. not directly managed by the kernel). However, There are a few places > in the code, specially in the nested code, that does not support that. > > Patch 1, 2, and 3 avoid the mapping and unmapping all together and just > directly use kvm_guest_read and kvm_guest_write. > > Patch 4 introduces a new guest mapping interface that encapsulate all the > bioler plate code that is needed to map and unmap guest memory. It also > supports guest memory without "struct page". > > Patch 5, 6, 7, 8, 9, and 10 switch most of the offending code in VMX and hyperv > to use the new guest mapping API. > > This patch series is the first set of fixes. Handling SVM and APIC-access page > will be handled in a different patch series. > > KarimAllah Ahmed (10): > X86/nVMX: handle_vmon: Read 4 bytes from guest memory instead of > map->read->unmap sequence > X86/nVMX: handle_vmptrld: Copy the VMCS12 directly from guest memory > instead of map->copy->unmap sequence. > X86/nVMX: Update the PML table without mapping and unmapping the page > KVM: Introduce a new guest mapping API > KVM/nVMX: Use kvm_vcpu_map when mapping the L1 MSR bitmap > KVM/nVMX: Use kvm_vcpu_map when mapping the virtual APIC page > KVM/nVMX: Use kvm_vcpu_map when mapping the posted interrupt > descriptor table > KVM/X86: Use kvm_vcpu_map in emulator_cmpxchg_emulated > KVM/X86: hyperv: Use kvm_vcpu_map in synic_clear_sint_msg_pending > KVM/X86: hyperv: Use kvm_vcpu_map in synic_deliver_msg > > arch/x86/kvm/hyperv.c | 28 ++++----- > arch/x86/kvm/vmx.c | 144 +++++++++++++++-------------------------------- > arch/x86/kvm/x86.c | 13 ++--- > include/linux/kvm_host.h | 15 +++++ > virt/kvm/kvm_main.c | 50 ++++++++++++++++ > 5 files changed, 129 insertions(+), 121 deletions(-) > Amazon Development Center Germany GmbH Berlin - Dresden - Aachen main office: Krausenstr. 38, 10117 Berlin Geschaeftsfuehrer: Dr. Ralf Herbrich, Christian Schlaeger Ust-ID: DE289237879 Eingetragen am Amtsgericht Charlottenburg HRB 149173 B
