f2a55d08d7
When Linux runs in a non-default VTL (CONFIG_HYPERV_VTL_MODE=y), get_vtl() must never fail as its return value is used in negotiations with the host. In the more generic case, (CONFIG_HYPERV_VTL_MODE=n) the VTL is always zero so there's no need to do the hypercall. Make get_vtl() BUG() in case of failure and put the implementation under "if IS_ENABLED(CONFIG_HYPERV_VTL_MODE)" to avoid the call altogether in the most generic use case. Signed-off-by: Saurabh Sengar <ssengar@linux.microsoft.com> Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com> Signed-off-by: Wei Liu <wei.liu@kernel.org> Link: https://lore.kernel.org/r/1695182675-13405-1-git-send-email-ssengar@linux.microsoft.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.