On Sat, Sep 26, 2026 at 9:43 PM Brian Cain <[email protected]> wrote: > > While preparing to enable MTTCG, audits and testing revealed gaps and > bugs in our implementation. > > LL/SC reservations should have been cleared at traps/exceptions. > > TLB accesses should hold a lock to make the operations atomic. > > Hexagon instructions with barrier or acquire/release semantics should emit > corresponding TCG semantics. > > Brian Cain (5): > target/hexagon: emit explicit TCG memory barriers > target/hexagon: clear LL/SC reservations at context boundaries > hw/hexagon: protect the shared architectural TLB > target/hexagon: publish TLB updates before flushing > tests/tcg/hexagon: cover LL/SC reservation clearing > > include/hw/hexagon/hexagon_tlb.h | 5 +++- > hw/hexagon/hexagon_tlb.c | 27 ++++++++++++++++++++- > linux-user/hexagon/cpu_loop.c | 4 ++++ > target/hexagon/cpu.c | 3 +++ > target/hexagon/hex_mmu.c | 6 ++--- > target/hexagon/translate.c | 15 ++++++++++++ > tests/tcg/hexagon/atomics.c | 40 ++++++++++++++++++++++++++++++++ > 7 files changed, 94 insertions(+), 6 deletions(-) > > -- > 2.34.1
Reviewed-by: Marco Liebel <[email protected]>
