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| author | Andrew Waterman <andrew@sifive.com> | 2017-05-05 14:40:01 -0700 |
|---|---|---|
| committer | Andrew Waterman <andrew@sifive.com> | 2017-05-05 14:40:01 -0700 |
| commit | aec2a5b9dd4cb10b40a1c37d531ed4b8712227d1 (patch) | |
| tree | 613bb8d2fc672413cd94806ee4f59c6f56177099 | |
| parent | b831fe7f4723ae745c4c31ca0bc628277dba94ef (diff) | |
| download | riscv-tests-aec2a5b9dd4cb10b40a1c37d531ed4b8712227d1.zip riscv-tests-aec2a5b9dd4cb10b40a1c37d531ed4b8712227d1.tar.gz riscv-tests-aec2a5b9dd4cb10b40a1c37d531ed4b8712227d1.tar.bz2 | |
Test that superpage PTEs trap when PPN LSBs are set
| -rw-r--r-- | isa/rv64si/dirty.S | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/isa/rv64si/dirty.S b/isa/rv64si/dirty.S index 50bdcfb..783522c 100644 --- a/isa/rv64si/dirty.S +++ b/isa/rv64si/dirty.S @@ -55,6 +55,19 @@ RVTEST_CODE_BEGIN li a0, PTE_A | PTE_D and t0, t0, a0 bne t0, a0, die + + # Enter MPRV again + li t0, MSTATUS_MPRV + csrs mstatus, t0 + + # Make sure that superpage entries trap when PPN LSBs are set. + li TESTNUM, 4 + lw a0, page_table_1 - DRAM_BASE + or a0, a0, 1 << PTE_PPN_SHIFT + sw a0, page_table_1 - DRAM_BASE, t0 + sfence.vma + sw a0, page_table_1 - DRAM_BASE, t0 + j die RVTEST_PASS @@ -93,6 +106,11 @@ skip: mret 1: + li t1, 4 + bne TESTNUM, t1, 1f + j pass + +1: die: RVTEST_FAIL |