[lkml]   [2008]   [May]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH] x86: Remove 6 bank limitation in 64 bit MCE reporting code
Venki Pallipadi wrote:
> Eliminate the 6 bank restriction in 64 bit mce reporting code. This restriction
> is artificial (due to static creation of sysfs files) and 32 bit code
> does not have any such restriction.
> This change helps in reporting the details of machine checks on a machine check
> exception with errors in bank 6 and above on CPUs that support those banks.
> Without the patch, machine check errors in those banks are not reported.
> We still have 128 (MCE_EXTENDED_BANK) bank restriction instead of max 256
> supported in hardware. That is not changed in the patch below as it will have
> some user level mcelog utility dependency, with bank 128 being used for
> thermal reporting currently.
> The patch below does not create sysfs control (bankNctl) for banks higher
> than 6 as well. That needs some pre-cleanup in /sysfs mce layout, removal of
> per cpu /sysfs entries for bankctl as they are really global system level
> control today. That change will follow. This basic change is critical to
> report the detailed errors on banks higher than 6.
> Signed-off-by: Venkatesh Pallipadi <>

Any chance you could add unifying the 32 and 64-bit code to your list,
since you're already working on eliminating differences there?


 \ /
  Last update: 2008-05-08 23:35    [W:0.052 / U:0.244 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site