Re: [PATCH v3 25/75] x86/sev-es: Add support for handling IOIO exceptions

Borislav Petkov
2020-05-16T07:57:23Z

Just a reminder so that this doesn't get lost:

On Tue, Apr 28, 2020 at 05:16:35PM +0200, Joerg Roedel wrote:
> + if (exit_info_1 & IOIO_TYPE_STR) {
> + int df = (regs->flags & X86_EFLAGS_DF) ? -1 : 1;

...

> +
> + if (!(exit_info_1 & IOIO_TYPE_IN)) {
> + ret = vc_insn_string_read(ctxt,
> + (void *)(es_base + regs->si),
> + ghcb->shared_buffer, io_bytes,
> + exit_info_2, df);
^^^^

> +
> + /* Everything went well, write back results */
> + if (exit_info_1 & IOIO_TYPE_IN) {
> + ret = vc_insn_string_write(ctxt,
> + (void *)(es_base + regs->di),
> + ghcb->shared_buffer, io_bytes,
> + exit_info_2, df);
^^^^

--
Regards/Gruss,
Boris.