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SubjectRe: [tip:x86/fpu] x86: Add new static_cpu_has() function using alternatives
On 05/18/2010 01:10 PM, Eric Dumazet wrote:
> # gcc -v
> Reading specs from /usr/lib/gcc/i386-redhat-linux/3.4.6/specs
> Configured with: ../configure --prefix=/usr --mandir=/usr/share/man
> --infodir=/usr/share/info --enable-shared --enable-threads=posix
> --disable-checking --with-system-zlib --enable-__cxa_atexit
> --disable-libunwind-exceptions --enable-java-awt=gtk
> --host=i386-redhat-linux
> Thread model: posix
> gcc version 3.4.6 20060404 (Red Hat 3.4.6-10)

I just implemented a fallback for gcc 3, but the real question is to
which degree we still care about gcc 3 support for x86 specifically
(other architectures might have other needs, but this is x86-specific code.)

Lately the number of issues with gcc 3 support seems to have gone way
up, and at some point we're going to have to cut it loose -- when would
depend largely on what the usage case is; e.g. why are you, yourself,
using gcc 3.4 to compile a state of the art kernel?

-hpa


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