| Message ID | 1484779123-18968-19-git-send-email-atar4qemu@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/target/sparc/ldst_helper.c b/target/sparc/ldst_helper.c index d3747cf..029120d 100644 --- a/target/sparc/ldst_helper.c +++ b/target/sparc/ldst_helper.c @@ -246,9 +246,11 @@ static void replace_tlb_1bit_lru(SparcTLBEntry *tlb, } #ifdef DEBUG_MMU - DPRINTF_MMU("%s lru replacement failed: no entries available\n", strmmu); + DPRINTF_MMU("%s lru replacement: no free entries available, " + "replacing the last one\n", strmmu); #endif - /* error state? */ + /* corner case: the last entry is replaced anyway */ + replace_tlb_entry(&tlb[63], tlb_tag, tlb_tte, env1); } #endif
Implement the behavior described in the chapter 13.9.11 of UltraSPARC T1™ Supplement to the UltraSPARC Architecture 2005: "If a TLB Data-In replacement is attempted with all TLB entries locked and valid, the last TLB entry (entry 63) is replaced." Signed-off-by: Artyom Tarasenko <atar4qemu@gmail.com> --- target/sparc/ldst_helper.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)