Re: [Patch v3 03/11] driver/edac/mpc85xx_edac: Drop setting/clearing RFXE bit in HID1

From	Borislav Petkov <bp@alien8.de>
Newsgroups	linux.kernel
Subject	Re: [Patch v3 03/11] driver/edac/mpc85xx_edac: Drop setting/clearing RFXE bit in HID1
Date	2016-08-09 05:40 +0200
Message-ID	<s463v-240-1@gated-at.bofh.it> (permalink)
References	<s2Ap4-8cT-7@gated-at.bofh.it> <s3N0S-6HU-29@gated-at.bofh.it> <s3N0S-6HU-27@gated-at.bofh.it> <s3V86-3gZ-35@gated-at.bofh.it>
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On Mon, Aug 08, 2016 at 03:39:44PM +0000, york sun wrote:
> RFXE is cleared by default. So for most SoCs, this is not even a concern 
> at all. But for e500v1, when RIO or PCI are used, this bit is set 
> specifically to catch an error by machine check (see commit 4e0e3435). 
> This is not the uncorrectable error from DDR. We will be better off to 
> let this error happen.

So I'm reading this: "With this bit set, EDAC driver can't get the
interrupt in case of uncorrectable error. So this bit is cleared in
favor of EDAC."

AFAIU, it means, RFXE bit remains clear so EDAC will get the interrupt
for the uncorrectable error (UE). So on those !e500v1 systems, EDAC be
handling those UEs.

Am I close?

If so, can EDAC handle the UE?

-- 
Regards/Gruss,
    Boris.

ECO tip #101: Trim your mails when you reply.
--

Thread

Re: [Patch v3 03/11] driver/edac/mpc85xx_edac: Drop setting/clearing  RFXE bit in HID1 Borislav Petkov <bp@alien8.de> - 2016-08-08 09:20 +0200
  Re: [Patch v3 03/11] driver/edac/mpc85xx_edac: Drop setting/clearing  RFXE bit in HID1 york sun <york.sun@nxp.com> - 2016-08-08 18:00 +0200
    Re: [Patch v3 03/11] driver/edac/mpc85xx_edac: Drop setting/clearing  RFXE bit in HID1 Borislav Petkov <bp@alien8.de> - 2016-08-09 05:40 +0200
      Re: [Patch v3 03/11] driver/edac/mpc85xx_edac: Drop setting/clearing  RFXE bit in HID1 Borislav Petkov <bp@alien8.de> - 2016-08-09 07:10 +0200
        Re: [Patch v3 03/11] driver/edac/mpc85xx_edac: Drop setting/clearing  RFXE bit in HID1 Borislav Petkov <bp@alien8.de> - 2016-08-09 09:00 +0200
          Re: [Patch v3 03/11] driver/edac/mpc85xx_edac: Drop setting/clearing  RFXE bit in HID1 Borislav Petkov <bp@alien8.de> - 2016-08-09 19:00 +0200
          Re: [Patch v3 03/11] driver/edac/mpc85xx_edac: Drop setting/clearing  RFXE bit in HID1 york sun <york.sun@nxp.com> - 2016-08-09 19:20 +0200
          Re: [Patch v3 03/11] driver/edac/mpc85xx_edac: Drop setting/clearing  RFXE bit in HID1 york sun <york.sun@nxp.com> - 2016-08-09 19:40 +0200
        Re: [Patch v3 03/11] driver/edac/mpc85xx_edac: Drop setting/clearing  RFXE bit in HID1 york sun <york.sun@nxp.com> - 2016-08-09 12:40 +0200
      Re: [Patch v3 03/11] driver/edac/mpc85xx_edac: Drop setting/clearing  RFXE bit in HID1 york sun <york.sun@nxp.com> - 2016-08-09 10:10 +0200

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