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e5830fb13b
Commit22f232d134("KVM: selftests: x86: Set supported CPUIDs on default VM") moved vcpu_set_cpuid into vm_create_with_vcpus, but dirty_log_test doesn't use it to create vm. So vcpu's CPUIDs is not set, the guest's pa_bits in kvm would be smaller than the value queried by userspace. However, the dirty track memory slot is in the highest GPA, the reserved bits in gpte would be set with wrong pa_bits. For shadow paging, page fault would fail in permission_fault and be injected into guest. Since guest doesn't have idt, it finally leads to vm_exit for triple fault. Move vcpu_set_cpuid into vm_vcpu_add_default to set supported CPUIDs on default vcpu, since almost all tests need it. Fixes:22f232d134("KVM: selftests: x86: Set supported CPUIDs on default VM") Signed-off-by: Hou Wenlong <houwenlong93@linux.alibaba.com> Message-Id: <411ea2173f89abce56fc1fca5af913ed9c5a89c9.1624351343.git.houwenlong93@linux.alibaba.com> 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.