| Message ID | 20090817144754.GA31553@1und1.de |
|---|---|
| State | Superseded |
| Headers | show |
Reimar Döffinger wrote: > Hello, > vmmouse uses a giant hack: it uses io ports (in instruction) but passes > data via registers. > This currently does not work since the qemu CPU registers are > (understandably) not kept in sync with the real KVM registers for this > operation. > Attached patch detects access to the vmmouse port and loads/stores CPU > registers into/from the QEMU state. > Should use cpu_synchronize_state() in vmport.c > Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de> > Regards, Anthony Liguori
diff --git a/kvm-all.c b/kvm-all.c index f669c3a..207378b 100644 --- a/kvm-all.c +++ b/kvm-all.c @@ -611,11 +611,21 @@ int kvm_cpu_exec(CPUState *env) switch (run->exit_reason) { case KVM_EXIT_IO: dprintf("handle_io\n"); +#if defined(TARGET_I386) || defined(TARGET_X86_64) + // HACK to make vmport/vmmouse work + if (run->io.port == 0x5658) + kvm_arch_get_registers(env); +#endif ret = kvm_handle_io(env, run->io.port, (uint8_t *)run + run->io.data_offset, run->io.direction, run->io.size, run->io.count); +#if defined(TARGET_I386) || defined(TARGET_X86_64) + // HACK to make vmport/vmmouse work + if (run->io.port == 0x5658) + kvm_arch_put_registers(env); +#endif break; case KVM_EXIT_MMIO: dprintf("handle_mmio\n");
Hello, vmmouse uses a giant hack: it uses io ports (in instruction) but passes data via registers. This currently does not work since the qemu CPU registers are (understandably) not kept in sync with the real KVM registers for this operation. Attached patch detects access to the vmmouse port and loads/stores CPU registers into/from the QEMU state. Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>