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[ Upstream commit33b165684a] The functions i40e_aq_get_phy_abilities_resp() and i40e_set_fc() both have giant structure on the stack, which makes each one use stack frames larger than 500 bytes. As clang decides one function into the other, we get a warning for exceeding the frame size limit on 32-bit architectures: drivers/net/ethernet/intel/i40e/i40e_common.c:1654:23: error: stack frame size of 1116 bytes in function 'i40e_set_fc' [-Werror,-Wframe-larger-than=] When building with gcc, the inlining does not happen, but i40e_set_fc() calls i40e_aq_get_phy_abilities_resp() anyway, so they add up on the kernel stack just as much. The parts that actually use large stacks don't overlap, so make sure each one is a separate function, and mark them as noinline_for_stack to prevent the compilers from combining them again. Fixes:0a862b43ac("i40e/i40evf: Add module_types and update_link_info") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> 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.