In 2/2, A20 logic changes a bit but I doubt any guest would be broken if A20 line written through I/O port 92 couldn't be read via i8042. The reverse (write using i8042 and read port 92) will work.
Blue Swirl (2): pc: improve onboard I/O port debugging Compile pckbd only once Makefile.objs | 1 + Makefile.target | 8 ++-- default-configs/i386-softmmu.mak | 1 + default-configs/mips-softmmu.mak | 1 + default-configs/mips64-softmmu.mak | 1 + default-configs/mips64el-softmmu.mak | 1 + default-configs/mipsel-softmmu.mak | 1 + default-configs/ppc-softmmu.mak | 1 + default-configs/ppc64-softmmu.mak | 1 + default-configs/ppcemb-softmmu.mak | 1 + default-configs/sparc64-softmmu.mak | 1 + default-configs/x86_64-softmmu.mak | 1 + hw/pc.c | 38 ++++++++++++++++---- hw/pc.h | 6 ++-- hw/pckbd.c | 64 +++++++++++++++++++++------------- hw/vmmouse.c | 2 +- 16 files changed, 90 insertions(+), 39 deletions(-)
