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d88423f784
Currently the kconfig logic for VFIO_IOMMU_SPAPR_TCE and VFIO_SPAPR_EEH
is broken when SPAPR_TCE_IOMMU=n. Leading to:
warning: (VFIO) selects VFIO_IOMMU_SPAPR_TCE which has unmet direct dependencies (VFIO && SPAPR_TCE_IOMMU)
warning: (VFIO) selects VFIO_IOMMU_SPAPR_TCE which has unmet direct dependencies (VFIO && SPAPR_TCE_IOMMU)
drivers/vfio/vfio_iommu_spapr_tce.c:113:8: error: implicit declaration of function 'mm_iommu_find'
This stems from the fact that VFIO selects VFIO_IOMMU_SPAPR_TCE, and
although it has an if clause, the condition is not correct.
We could fix it by doing select VFIO_IOMMU_SPAPR_TCE if SPAPR_TCE_IOMMU,
but the cleaner fix is to drop the selects and tie VFIO_IOMMU_SPAPR_TCE
to the value of VFIO, and express the dependencies in only once place.
Do the same for VFIO_SPAPR_EEH.
The end result is that the values of VFIO_IOMMU_SPAPR_TCE and
VFIO_SPAPR_EEH follow the value of VFIO, except when SPAPR_TCE_IOMMU=n
and/or EEH=n. Which is exactly what we want to happen.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. 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.