Messages in this thread | | | Date | Fri, 4 Sep 2020 20:58:23 +0300 | From | Alexey Dobriyan <> | Subject | Re: remove the last set_fs() in common code, and remove it for x86 and powerpc v3 |
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On Fri, Sep 04, 2020 at 08:00:24AM +0200, Ingo Molnar wrote: > * Christoph Hellwig <hch@lst.de> wrote: > > this series removes the last set_fs() used to force a kernel address > > space for the uaccess code in the kernel read/write/splice code, and then > > stops implementing the address space overrides entirely for x86 and > > powerpc. > > Cool! For the x86 bits: > > Acked-by: Ingo Molnar <mingo@kernel.org>
set_fs() is older than some kernel hackers!
$ cd linux-0.11/ $ find . -type f -name '*.h' | xargs grep -e set_fs -w -n -A3 ./include/asm/segment.h:61:extern inline void set_fs(unsigned long val) ./include/asm/segment.h-62-{ ./include/asm/segment.h-63- __asm__("mov %0,%%fs"::"a" ((unsigned short) val)); ./include/asm/segment.h-64-}
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