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Add support for bus lock detection (KVM_CAP_X86_BUS_LOCK_EXIT). #245

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Add support for bus lock detection (KVM_CAP_X86_BUS_LOCK_EXIT). #245

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Commits on Dec 15, 2023

  1. Introduce KvmRunWrapper::as_ref() 

    Introduce a new method to get an immutable reference to the kvm_run
struct. Replace uses of `as_mut_ref()` with `as_ref()` where possible.

Signed-off-by: Carlos López <[email protected]>
    @00xc
    00xc committed Dec 15, 2023
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  2. Add support for bus lock detection 

    Add support for bus lock detection. The feature can be enabled via
KVM_CAP_X86_BUS_LOCK_EXIT, which enables a new exit
(KVM_EXIT_X86_BUS_LOCK) and a new flag (KVM_RUN_X86_BUS_LOCK) in the
kvm_run->flags field.

Add two tests as well to verify that enabling the feature works.

Signed-off-by: Carlos López <[email protected]>
    @00xc
    00xc committed Dec 15, 2023
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