e8a170ff9a
A final attempt at enabling sse2 for GCC users. Orininally attempted in: commit1011745073("drm/amd/display: add -msse2 to prevent Clang from emitting libcalls to undefined SW FP routines") Reverted due to "reported instability" in: commit193392ed9f("Revert "drm/amd/display: add -msse2 to prevent Clang from emitting libcalls to undefined SW FP routines"") Re-added just for Clang in: commit0f0727d971("drm/amd/display: readd -msse2 to prevent Clang from emitting libcalls to undefined SW FP routines") The original report didn't have enough information to know if the GPF was due to misalignment, but I suspect that it was. (The missing information was the disassembly of the function at the bottom of the trace, to see if the instruction pointer pointed to an instruction with 16B alignment memory operand requirements. The stack trace does show the stack was only 8B but not 16B aligned though, which makes this a strong possibility). Now that the stack misalignment issue has been fixed for users of GCC 7.1+, reattempt adding -msse2. This matches Clang. It will likely never be safe to enable this for pre-GCC 7.1 AND use a 16B aligned stack in these translation units. This is only a functional change for GCC 7.1+ users, and should be boot tested. Link: https://bugs.freedesktop.org/show_bug.cgi?id=109487 Signed-off-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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.