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Yosry Ahmed a8b637dc69 KVM: nSVM: Mark all of vmcb02 dirty when restoring nested state
commit e63fb1379f upstream.

When restoring a vCPU in guest mode, any state restored before
KVM_SET_NESTED_STATE (e.g. KVM_SET_SREGS) will mark the corresponding
dirty bits in vmcb01, as it is the active VMCB before switching to
vmcb02 in svm_set_nested_state().

Hence, mark all fields in vmcb02 dirty in svm_set_nested_state() to
capture any previously restored fields.

Fixes: cc440cdad5 ("KVM: nSVM: implement KVM_GET_NESTED_STATE and KVM_SET_NESTED_STATE")
CC: stable@vger.kernel.org
Signed-off-by: Yosry Ahmed <yosry.ahmed@linux.dev>
Link: https://patch.msgid.link/20260210010806.3204289-1-yosry.ahmed@linux.dev
Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2026-06-01 17:35:16 +02:00
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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.