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authorYouquan Song <youquan.song@intel.com>2021-08-18 10:57:01 -0700
committerTony Luck <tony.luck@intel.com>2021-08-23 10:35:36 -0700
commitcf4e6d52f58399c777276172ec250502e19d5e63 (patch)
tree4222b4a09b82d5a5338fefa8e688b70e9dbbd54b /ipc
parent2294a7299f5e51667b841f63c6d69474491753fb (diff)
downloadlinux-cf4e6d52f58399c777276172ec250502e19d5e63.tar.bz2
EDAC/i10nm: Retrieve and print retry_rd_err_log registers
Retrieve and print retry_rd_err_log registers like the earlier change: commit e80634a75aba ("EDAC, skx: Retrieve and print retry_rd_err_log registers") This is a little trickier than on Skylake because of potential interference with BIOS use of the same registers. The default behavior is to ignore these registers. A module parameter retry_rd_err_log(default=0) controls the mode of operation: - 0=off : Default. - 1=bios : Linux doesn't reset any control bits, but just reports values. This is "no harm" mode, but it may miss reporting some data. - 2=linux: Linux tries to take control and resets mode bits, clears valid/UC bits after reading. This should be more reliable (especially if BIOS interference is reduced by disabling eMCA reporting mode in BIOS setup). Co-developed-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com> Signed-off-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com> Signed-off-by: Youquan Song <youquan.song@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com> Link: https://lore.kernel.org/r/20210818175701.1611513-3-tony.luck@intel.com
Diffstat (limited to 'ipc')
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