Paolo Bonzini
0624fca951
kvm/x86: return meaningful value from KVM_SIGNAL_MSI
If kvm_apic_map_get_dest_lapic() finds a disabled LAPIC, it will return with bitmap==0 and (*r == -1) will be returned to userspace. QEMU may then record "KVM: injection failed, MSI lost (Operation not permitted)" in its log, which is quite puzzling. Reported-by: Peng Hao <penghao122@sina.com.cn> 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. See Documentation/00-INDEX for a list of what is contained in each file. 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.
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