Il 24/07/2013 08:11, Arthur Chunqi Li ha scritto:
>
> static int vmx_run()
> {
> u32 eax;
> bool ret;
>
> vmcs_write(HOST_RSP, get_rsp());
> ret = vmlaunch();
The compiler can still change rsp between here...
> while (!ret) {
> asm volatile(
> "vmx_return:\n\t"
... and here.
If you want to write it in C, the only thing that can be after
vmlaunch/vmresume is "exit()". Else it has to be asm.
Paolo
> SAVE_GPR
> );
> eax = exit_handler();
> switch (eax) {
> case VMX_TEST_VMEXIT:
> return 0;
> case VMX_TEST_RESUME:
> break;
> default:
> printf("%s : unhandled ret from exit_handler.\n", __func__);
> return 1;
> }
> ret = vmresume();
> }
> printf("%s : vmenter failed.\n", __func__);
> return 1;
> }
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