Messages in this thread | | | Date | Tue, 10 Sep 2013 18:51:32 +0200 | Subject | Re: [PATCH] staging: Disable lustre file system for MIPS, SH, and XTENSA | From | Geert Uytterhoeven <> |
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On Tue, Sep 10, 2013 at 6:44 PM, Guenter Roeck <linux@roeck-us.net> wrote: >> I tried with 2.6.3 from crosstool, and it succeeded, too. >> > Do such old versions of gcc still exist ? Just kidding :) > >> Turns out cfs_access_process_vm() is called with write=0 only. >> Gcc 2.6.3 optimizes away the write != 0 branch (which calls copy_to_user_page() >> and thus flush_icache_user_range()), while gcc 4.1.2 doesn't do that. >> Mystery solved. >> > Still bad. Guess it would still fail with 4.6.3 if optimization is turned off.
For the record: s/2.6.3/4.6.3/.
Gr{oetje,eeting}s,
Geert
-- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds
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