EDAC/skx: Fix overflows on the DRAM row address mapping arrays
authorQiuxu Zhuo <qiuxu.zhuo@intel.com>
Sat, 11 Feb 2023 01:17:28 +0000 (09:17 +0800)
committerTony Luck <tony.luck@intel.com>
Mon, 13 Mar 2023 17:42:00 +0000 (10:42 -0700)
commit71b1e3ba3fed5a34c5fac6d3a15c2634b04c1eb7
tree40e38dab7bd6fed879217a9d5598a42bc28abad4
parenteeac8ede17557680855031c6f305ece2378af326
EDAC/skx: Fix overflows on the DRAM row address mapping arrays

The current DRAM row address mapping arrays skx_{open,close}_row[]
only support ranks with sizes up to 16G. Decoding a rank address
to a DRAM row address for a 32G rank by using either one of the
above arrays by the skx_edac driver, will result in an overflow on
the array.

For a 32G rank, the most significant DRAM row address bit (the
bit17) is mapped from the bit34 of the rank address. Add this new
mapping item to both arrays to fix the overflow issue.

Fixes: 4ec656bdf43a ("EDAC, skx_edac: Add EDAC driver for Skylake")
Reported-by: Feng Xu <feng.f.xu@intel.com>
Tested-by: Feng Xu <feng.f.xu@intel.com>
Signed-off-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Link: https://lore.kernel.org/all/20230211011728.71764-1-qiuxu.zhuo@intel.com
drivers/edac/skx_base.c