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1c96dcceae
vmx_apic_init_signal_blocked is buggy in that it returns true even in VMX non-root mode. In non-root mode, however, INITs are not latched, they just cause a vmexit. Previously, KVM was waiting for them to be processed when kvm_apic_accept_events and in the meanwhile it ate the SIPIs that the processor received. However, in order to implement the wait-for-SIPI activity state, KVM will have to process KVM_APIC_SIPI in vmx_check_nested_events, and it will not be possible anymore to disregard SIPIs in non-root mode as the code is currently doing. By calling kvm_x86_ops.nested_ops->check_events, we can force a vmexit (with the side-effect of latching INITs) before incorrectly injecting an INIT or SIPI in a guest, and therefore vmx_apic_init_signal_blocked can do the right thing. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.