On May 2, 2008, at 8:53 AM, Josh Boyer wrote:
On Fri, 2 May 2008 08:32:12 -0500
Kumar Gala <[EMAIL PROTECTED]> wrote:
On May 2, 2008, at 7:13 AM, Josh Boyer wrote:
On Fri, 2008-05-02 at 03:11 -0500, Kumar Gala wrote:
GCC 4.4.x looks to be adding support for generating out-of-line
register
saves/restores based on:
http://gcc.gnu.org/ml/gcc-patches/2008-04/msg01678.html
This breaks the bootwrapper as we'd need to link with libgcc to get
the
implementation of the register save/restores.
We don't link with libgcc anywhere in the kernel. Is this going to
have
similar impacts for building the vmlinux itself?
Not by default. The issue only shows up with -Os. Not sure if we
can
build the kernel that way.
We can. See CONFIG_CC_OPTIMIZE_FOR_SIZE. That's set in at least
pseries_defconfig and ps3_defconfig. It's also something I've been
thinking about trying with 4xx.
Seems we need a bit more than just the bootwrapper.
building w/this enabled and will produce a patch for the kernel if
needed.
- k
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