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commitc011d23ba0upstream. Commite45adf665a("KVM: Introduce a new guest mapping API", 2019-01-31) introduced a build failure on aarch64 defconfig: $ make -j$(nproc) ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- O=out defconfig \ Image.gz ... ../arch/arm64/kvm/../../../virt/kvm/kvm_main.c: In function '__kvm_map_gfn': ../arch/arm64/kvm/../../../virt/kvm/kvm_main.c:1763:9: error: implicit declaration of function 'memremap'; did you mean 'memset_p'? ../arch/arm64/kvm/../../../virt/kvm/kvm_main.c:1763:46: error: 'MEMREMAP_WB' undeclared (first use in this function) ../arch/arm64/kvm/../../../virt/kvm/kvm_main.c: In function 'kvm_vcpu_unmap': ../arch/arm64/kvm/../../../virt/kvm/kvm_main.c:1795:3: error: implicit declaration of function 'memunmap'; did you mean 'vm_munmap'? because these functions are declared in <linux/io.h> rather than <asm/io.h>, and the former was being pulled in already on x86 but not on aarch64. Reported-by: Nathan Chancellor <natechancellor@gmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> [bwh: Backported to 4.19: adjust context] Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk> Signed-off-by: Sasha Levin <sashal@kernel.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.
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.