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authorNikos Nikoleris <nikos.nikoleris@arm.com>2018-03-12 10:11:16 +0000
committerGabe Black <gabeblack@google.com>2018-03-21 22:28:26 +0000
commit0473286ab1e9992a906eff380000bf90c82eeccb (patch)
treed750bca0b96da2ab66c788ae3495dbe2f90f2cf3 /src/mem/serial_link.cc
parent68af229490fc811aebddf68b3e2e09e63a5fa475 (diff)
downloadgem5-0473286ab1e9992a906eff380000bf90c82eeccb.tar.xz
mem-cache: Allow clean operations when block allocation fails
Block allocation can fail when there is an in-service MSHR that operates on the victim block. This can happed due to: * an upgrade operation: a request that needs a writable copy of the block finds a shared (non-writable) copy of the block in the cache and has allocates an MSHR for the pending upgrade operation, or * a clean operation: a clean request finds a dirty copy of the block and allocates an MSHR for the pending clean operation. This changes relaxes an assertion to allow for the 2nd case (cache clean operations). Change-Id: Ib51482160b5f2b3702ed744b0eac2029d34bc9d4 Reviewed-by: Curtis Dunham <curtis.dunham@arm.com> Reviewed-on: https://gem5-review.googlesource.com/9021 Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Maintainer: Gabe Black <gabeblack@google.com>
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