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Build the kernel with `C=2`: arch/powerpc/kvm/book3s_hv_nested.c:572:25: warning: symbol 'kvmhv_alloc_nested' was not declared. Should it be static? arch/powerpc/kvm/book3s_64_mmu_radix.c:350:6: warning: symbol 'kvmppc_radix_set_pte_at' was not declared. Should it be static? arch/powerpc/kvm/book3s_hv.c:3568:5: warning: symbol 'kvmhv_p9_guest_entry' was not declared. Should it be static? arch/powerpc/kvm/book3s_hv_rm_xics.c:767:15: warning: symbol 'eoi_rc' was not declared. Should it be static? arch/powerpc/kvm/book3s_64_vio_hv.c:240:13: warning: symbol 'iommu_tce_kill_rm' was not declared. Should it be static? arch/powerpc/kvm/book3s_64_vio.c:492:6: warning: symbol 'kvmppc_tce_iommu_do_map' was not declared. Should it be static? arch/powerpc/kvm/book3s_pr.c:572:6: warning: symbol 'kvmppc_set_pvr_pr' was not declared. Should it be static? Those symbols are used only in the files that define them so make them static to fix the warnings. Signed-off-by: Wang Wensheng <wangwensheng4@huawei.com> Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
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.