[PATCH V2 0/3] Updates to mce_amd_inj module

[Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com>]

This patchset is mostly a resend of earlier patches which got acceptance
into maintainer's tree but did not make it into upstream.
Original versions of patches 2 and 3 of this patchset-
a. http://marc.info/?l=linux-edac&m=143327679901253&w=2
b. http://marc.info/?l=linux-edac&m=143392472509250&w=2

Changes from original versions-
Patch 2: Earlier version did not include the update to README file.
	 That was because README attribute was introduced in separate
	 patch (http://marc.info/?l=linux-edac&m=143327679301249&w=2)
	 But subsequently, only parts of it made it upstream.

Patch 3: NBCFG register offset definition exists already in
	 drivers/edac/amd64_edac.h which was included in earlier version.
	 But any dependency with drivers/edac/ was removed when the file
	 moved to arch/x86/ras. So, I have redefined it here.
	 I can move it to a different place if required.

With changes to the location of the module, I am adapting the patches
on top of latest tip.

Patch 1: Abort write file operation on invalid input
Patch 2: Extend flags attribute to accept values of 'df', 'th'.
	 These values will be used to trigger deferred error/threshold
	 error apic interrupts respectively.
Patch 3: Modify injection mechanism for bank 4 errors. Since they are
	 logged or reported only on NBC, we make sure that we inject on
	 the correct core here.

Changes from V1 (per Boris' comments)
  - Instead of ignoring unwanted characters, return early on wrong input
    from user as this way, we can save a copy from user input for bad values.
  - With above change, modified patch title and commit message a bit.
  - Use 2 letter strings to indicate error injection for Deferred/Threshold
    error interrupts too.

Aravind Gopalakrishnan (3):
  RAS, mce_amd_inj: Return early on invalid input
  RAS, mce_amd_inj: Add capability to trigger apic interrupts
  RAS, mce_amd_inj: Inject errors on NBC for bank 4 errors

 arch/x86/ras/mce_amd_inj.c | 109 ++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 102 insertions(+), 7 deletions(-)

-- 
2.4.0