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[ Upstream commit77693a5fb5] Modify back __set_fixmap() to using __fix_to_virt() instead of fix_to_virt() otherwise the following happens because it seems GCC doesn't see idx as a builtin const. CC mm/early_ioremap.o In file included from ./include/linux/kernel.h:11:0, from mm/early_ioremap.c:11: In function ‘fix_to_virt’, inlined from ‘__set_fixmap’ at ./arch/powerpc/include/asm/fixmap.h:87:2, inlined from ‘__early_ioremap’ at mm/early_ioremap.c:156:4: ./include/linux/compiler.h:350:38: error: call to ‘__compiletime_assert_32’ declared with attribute error: BUILD_BUG_ON failed: idx >= __end_of_fixed_addresses _compiletime_assert(condition, msg, __compiletime_assert_, __LINE__) ^ ./include/linux/compiler.h:331:4: note: in definition of macro ‘__compiletime_assert’ prefix ## suffix(); \ ^ ./include/linux/compiler.h:350:2: note: in expansion of macro ‘_compiletime_assert’ _compiletime_assert(condition, msg, __compiletime_assert_, __LINE__) ^ ./include/linux/build_bug.h:39:37: note: in expansion of macro ‘compiletime_assert’ #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg) ^ ./include/linux/build_bug.h:50:2: note: in expansion of macro ‘BUILD_BUG_ON_MSG’ BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition) ^ ./include/asm-generic/fixmap.h:32:2: note: in expansion of macro ‘BUILD_BUG_ON’ BUILD_BUG_ON(idx >= __end_of_fixed_addresses); ^ Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Fixes:4cfac2f9c7("powerpc/mm: Simplify __set_fixmap()") Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/f4984c615f90caa3277775a68849afeea846850d.1568295907.git.christophe.leroy@c-s.fr 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.
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.