Hi,
this is the second and extended version of my patchset to clean up the code for
SVM virtualization in KVM. The patchset was tested with KVM on KVM and showed
no regressions. It was tested with Nested Paging and with Shadow Paging on the
first-level guest.
As a major change this patchset enables the nested SVM code by
default. It is still required to start qemu with -enable-nesting,
though.
Changes to the previous version:
* added Acked-by tags
* added missing patch descriptions
* addressed review comments
* dropped dynamic debugging patch (will be replaced by change
to tracing infrastructure)
* dropped patch moving nested #pf handling because it broke
nested SVM with shadow paging
* added more cleanups (e.g. removed nested_svm_do and
function pointer code flow)
* fixed 2 minor issues
* enabled nested svm by default
Thanks,
Joerg
Diffstat:
arch/x86/kvm/svm.c | 637 +++++++++++++++++++++++++++++-----------------------
1 files changed, 358 insertions(+), 279 deletions(-)
Shortlog:
Joerg Roedel (21):
kvm/svm: add helper functions for global interrupt flag
kvm/svm: optimize nested #vmexit
kvm/svm: optimize nested vmrun
kvm/svm: copy only necessary parts of the control area on vmrun/vmexit
kvm/svm: complete interrupts after handling nested exits
kvm/svm: move nested svm state into seperate struct
kvm/svm: cache nested intercepts
kvm/svm: consolidate nested_svm_exit_handled
kvm/svm: do nested vmexit in nested_svm_exit_handled
kvm/svm: simplify nested_svm_check_exception
kvm/svm: get rid of nested_svm_vmexit_real
kvm/svm: clean up nested_svm_exit_handled_msr
kvm/svm: clean up nestec vmload/vmsave paths
kvm/svm: clean up nested vmrun path
kvm/svm: remove nested_svm_do and helper functions
kvm/svm: handle errors in vmrun emulation path appropriatly
kvm/svm: move special nested exit handling to separate function
kvm/svm: remove unnecessary is_nested check from svm_cpu_run
kvm/svm: move nested_svm_intr main logic out of if-clause
kvm/svm: check for nested VINTR flag in svm_interrupt_allowed
kvm/svm: enable nested svm by default
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