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Re: [PATCH v2 10/30] Add x86-specific parity functions

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在 2016年04月06日 18:37, One Thousand Gnomes 写道:
> Even that would still be wrong for the smaller parity values. The CPU
> supports 8bit parity directly going back to the 8086 so the
> implementation for 8bit and I think 16bit is still wrong.
>
> Alan

I don't know where the errors. X86 is new to me.

The definition of the parity flag on x86 from Wikipedia:

In x86 processors, the parity flag reflects the parity only of the least significant
byte of the result, and is set if the number of set bits of ones is even. According to
80386 Intel manual, the parity flag is changed in the x86 processor family by the
following instructions:
     All arithmetic instructions;
     Compare instruction (equivalent to a subtract instruction without storing the result);
     Logical instructions - XOR, AND, OR;
     the TEST instruction (equivalent to the AND instruction without storing the result).
     the POPF instruction

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[PATCH V2 01/30] bitops: add parity functions Zeng Zhaoxiu <zhaoxiu.zeng@gmail.com> - 2016-04-05 04:30 +0200
  [PATCH V2 02/30] Include generic parity.h in some architectures'  bitops.h Zeng Zhaoxiu <zhaoxiu.zeng@gmail.com> - 2016-04-05 06:30 +0200
    [PATCH v2 02/30] Include generic parity.h in some architectures' bitops.h zengzhaoxiu@163.com - 2016-04-06 10:50 +0200
  Re: [PATCH V2 01/30] bitops: add parity functions Sam Ravnborg <sam@ravnborg.org> - 2016-04-05 21:10 +0200
    Re: [PATCH V2 01/30] bitops: add parity functions Zeng Zhaoxiu <zhaoxiu.zeng@gmail.com> - 2016-04-06 07:40 +0200
      Re: [PATCH V2 01/30] bitops: add parity functions Sam Ravnborg <sam@ravnborg.org> - 2016-04-06 10:30 +0200
    [PATCH v2 01/30] bitops: add parity functions zengzhaoxiu@163.com - 2016-04-06 10:50 +0200
  [PATCH v2 03/30] Add alpha-specific parity functions zengzhaoxiu@163.com - 2016-04-06 10:50 +0200
  [PATCH v2 05/30] Add ia64-specific parity functions zengzhaoxiu@163.com - 2016-04-06 11:00 +0200
  [PATCH v2 07/30] Add powerpc-specific parity functions zengzhaoxiu@163.com - 2016-04-06 11:10 +0200
  [PATCH v2 06/30] Add mips-specific parity functions zengzhaoxiu@163.com - 2016-04-06 11:10 +0200
    [PATCH v2 06/30] Add mips-specific parity functions zengzhaoxiu@163.com - 2016-04-06 12:30 +0200
  [PATCH v2 04/30] Add blackfin-specific parity functions zengzhaoxiu@163.com - 2016-04-06 11:10 +0200
  [PATCH v2 09/30] Add tile-specific parity functions zengzhaoxiu@163.com - 2016-04-06 11:10 +0200
    Re: [PATCH v2 09/30] Add tile-specific parity functions Chris Metcalf <cmetcalf@mellanox.com> - 2016-04-06 15:30 +0200
      Re: [PATCH v2 09/30] Add tile-specific parity functions Zeng Zhaoxiu <zhaoxiu.zeng@gmail.com> - 2016-04-07 06:00 +0200
  [PATCH v2 08/30] Add sparc-specific parity functions zengzhaoxiu@163.com - 2016-04-06 11:20 +0200
    Re: [PATCH v2 08/30] Add sparc-specific parity functions Sam Ravnborg <sam@ravnborg.org> - 2016-04-06 20:50 +0200
      Re: [PATCH v2 08/30] Add sparc-specific parity functions Zeng Zhaoxiu <zhaoxiu.zeng@gmail.com> - 2016-04-07 06:00 +0200
  [PATCH v2 10/30] Add x86-specific parity functions zengzhaoxiu@163.com - 2016-04-06 11:30 +0200
    Re: [PATCH v2 10/30] Add x86-specific parity functions Borislav Petkov <bp@suse.de> - 2016-04-06 12:20 +0200
      Re: [PATCH v2 10/30] Add x86-specific parity functions One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk> - 2016-04-06 12:40 +0200
        Re: [PATCH v2 10/30] Add x86-specific parity functions Borislav Petkov <bp@suse.de> - 2016-04-06 13:00 +0200
          Re: [PATCH v2 10/30] Add x86-specific parity functions Zeng Zhaoxiu <zhaoxiu.zeng@gmail.com> - 2016-04-07 06:00 +0200
            Re: [PATCH v2 10/30] Add x86-specific parity functions Borislav Petkov <bp@suse.de> - 2016-04-07 11:50 +0200
        Re: [PATCH v2 10/30] Add x86-specific parity functions Zeng Zhaoxiu <zhaoxiu.zeng@gmail.com> - 2016-04-11 04:50 +0200
          Re: [PATCH v2 10/30] Add x86-specific parity functions Borislav Petkov <bp@suse.de> - 2016-04-15 02:20 +0200
      Re: [PATCH v2 10/30] Add x86-specific parity functions Zeng Zhaoxiu <zhaoxiu.zeng@gmail.com> - 2016-04-07 06:00 +0200
        Re: [PATCH v2 10/30] Add x86-specific parity functions Borislav Petkov <bp@suse.de> - 2016-04-07 11:50 +0200
    Re: [PATCH v2 10/30] Add x86-specific parity functions Andi Kleen <andi@firstfloor.org> - 2016-04-06 21:50 +0200
      Re: [PATCH v2 10/30] Add x86-specific parity functions Zeng Zhaoxiu <zhaoxiu.zeng@gmail.com> - 2016-04-07 06:00 +0200
      Re: [PATCH v2 10/30] Add x86-specific parity functions Dmitry Vyukov <dvyukov@google.com> - 2016-04-07 08:40 +0200
        Re: [PATCH v2 10/30] Add x86-specific parity functions Borislav Petkov <bp@suse.de> - 2016-04-07 11:50 +0200
      Re: [PATCH v2 10/30] Add x86-specific parity functions One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk> - 2016-04-07 16:20 +0200
  [PATCH v2 11/30] sunrpc: use parity8 zengzhaoxiu@163.com - 2016-04-06 11:40 +0200
  [PATCH v2 12/30] mips: use parity functions in cerr-sb1.c zengzhaoxiu@163.com - 2016-04-06 11:40 +0200
  [PATCH v2 14/30] media: use parity8 in vivid-vbi-gen.c zengzhaoxiu@163.com - 2016-04-06 11:40 +0200
  [PATCH v2 13/30] bch: use parity32 zengzhaoxiu@163.com - 2016-04-06 11:40 +0200
  [PATCH v2 17/30] input: use parity64 in sidewinder zengzhaoxiu@163.com - 2016-04-06 11:50 +0200
  [PATCH v2 16/30] input: use parity32 in grip_mp zengzhaoxiu@163.com - 2016-04-06 11:50 +0200
  [PATCH v2 18/30] input: use parity16 in ams_delta_serio zengzhaoxiu@163.com - 2016-04-06 11:50 +0200
  [PATCH v2 19/30] scsi: use parity32 in isci's phy zengzhaoxiu@163.com - 2016-04-06 11:50 +0200
  [PATCH v2 15/30] media: use parity functions in saa7115 zengzhaoxiu@163.com - 2016-04-06 11:50 +0200
  [PATCH v2 22/30] crypto: use parity functions in qat_hal zengzhaoxiu@163.com - 2016-04-06 12:00 +0200
  [PATCH v2 21/30] mtd: use parity functions in inftlcore zengzhaoxiu@163.com - 2016-04-06 12:00 +0200
  [PATCH v2 20/30] mtd: use parity16 in ssfdc zengzhaoxiu@163.com - 2016-04-06 12:00 +0200
  [PATCH v2 23/30] mtd: use parity16 in sm_ftl zengzhaoxiu@163.com - 2016-04-06 12:10 +0200
  [PATCH v2 26/30] input: use parity8 in sa1111ps2 zengzhaoxiu@163.com - 2016-04-06 12:20 +0200
  [PATCH v2 27/30] iio: use parity32 in adxrs450 zengzhaoxiu@163.com - 2016-04-06 12:20 +0200
    Re: [PATCH v2 27/30] iio: use parity32 in adxrs450 Jonathan Cameron <jic23@kernel.org> - 2016-04-10 16:40 +0200
      Re: [PATCH v2 27/30] iio: use parity32 in adxrs450 Lars-Peter Clausen <lars@metafoo.de> - 2016-04-10 17:10 +0200
        Re: [PATCH v2 27/30] iio: use parity32 in adxrs450 Jonathan Cameron <jic23@kernel.org> - 2016-04-10 17:20 +0200
          Re: [PATCH v2 27/30] iio: use parity32 in adxrs450 Jonathan Cameron <jic23@kernel.org> - 2016-04-10 17:20 +0200
  [PATCH v2 24/30] ethernet: use parity8 in sun/niu.c zengzhaoxiu@163.com - 2016-04-06 12:20 +0200
  [PATCH v2 25/30] input: use parity8 in pcips2 zengzhaoxiu@163.com - 2016-04-06 12:20 +0200
  Re: [PATCH v2 28/30] serial: use parity32 in max3100 Greg KH <gregkh@linuxfoundation.org> - 2016-04-06 12:30 +0200
  [PATCH v2 28/30] serial: use parity32 in max3100 zengzhaoxiu@163.com - 2016-04-06 12:30 +0200
  [PATCH v2 30/30] ethernet: use parity8 in broadcom/tg3.c zengzhaoxiu@163.com - 2016-04-06 12:30 +0200
  [PATCH v2 29/30] input: use parity8 in elantech zengzhaoxiu@163.com - 2016-04-06 12:30 +0200

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