978ce5837c
svm_load_mmu_pgd is delaying the write of GUEST_CR3 to prepare_vmcs02 as an optimization, but this is only correct before the nested vmentry. If userspace is modifying CR3 with KVM_SET_SREGS after the VM has already been put in guest mode, the value of CR3 will not be updated. Remove the optimization, which almost never triggers anyway. This was was added in commit689f3bf216("KVM: x86: unify callbacks to load paging root", 2020-03-16) just to keep the two vendor-specific modules closer, but we'll fix VMX too. Fixes:689f3bf216("KVM: x86: unify callbacks to load paging root") 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.