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authorDaniel R. Carvalho <odanrc@yahoo.com.br>2018-09-19 10:19:06 +0200
committerDaniel Carvalho <odanrc@yahoo.com.br>2018-09-19 09:13:25 +0000
commitb53dd6d12efafb574989226911a7b0bc921df24d (patch)
tree766c57af77b7297691a60eed5cc5b45255c6a594 /system/arm/dt
parentb3ef93166f76b3f76fe5254322d3fcb0f5e4b559 (diff)
downloadgem5-b53dd6d12efafb574989226911a7b0bc921df24d.tar.xz
mem-cache: Fix non-bijective function in Skewed caches
The hash() function must be bijective for the skewed caches to work, however when the hashing is done on top of a one-bit address, the MSB and LSB refer to the same bit, and therefore their xor will always be zero. This patch adds a fatal error to not allow the user to set an invalid value for the number of sets that would generate that bug. As a side note, the missing header for the bitfields functions has been added. Change-Id: I35a03ac5fdc4debb091f7f2db5db33568d0b0021 Reviewed-on: https://gem5-review.googlesource.com/12724 Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com> Maintainer: Nikos Nikoleris <nikos.nikoleris@arm.com>
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