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Removed clear from TLBLRU because there is no need to flush LRU state and it causes coverage issues

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David Harris 2023-04-28 07:03:46 -07:00
parent a556ea54e3
commit f6f43e826a
1 changed files with 1 additions and 3 deletions
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src/mmu/tlb/tlblru.sv
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@ -50,7 +50,5 @@ module tlblru #(parameter TLB_ENTRIES = 8) (
assign RUBitsAccessed = AccessLines | RUBits; assign RUBitsAccessed = AccessLines | RUBits;
assign AllUsed = &RUBitsAccessed; // if all recently used, then clear to none assign AllUsed = &RUBitsAccessed; // if all recently used, then clear to none
assign RUBitsNext = AllUsed ? 0 : RUBitsAccessed; assign RUBitsNext = AllUsed ? 0 : RUBitsAccessed;
flopenr #(TLB_ENTRIES) lrustate(clk, reset, (CAMHit | TLBWrite), RUBitsNext, RUBits);
// enable must be ORd with TLBFlush to ensure flop fires on a flush. DH 7/8/21
flopenrc #(TLB_ENTRIES) lrustate(clk, reset, TLBFlush, (CAMHit | TLBWrite), RUBitsNext, RUBits);
endmodule endmodule