> On Feb 12, 2020, at 3:38 AM, Joerg Roedel <joro@xxxxxxxxxx> wrote: > > On Tue, Feb 11, 2020 at 02:23:22PM -0800, Andy Lutomirski wrote: >>> On Tue, Feb 11, 2020 at 5:53 AM Joerg Roedel <joro@xxxxxxxxxx> wrote: >>> +void __init no_ghcb_vc_handler(struct pt_regs *regs) >> >> Isn't there a second parameter: unsigned long error_code? > > No, the function gets the error-code from regs->orig_ax. This particular > function only needs to check for error_code == SVM_EXIT_CPUID, as that > is the only one supported when there is no GHCB. > Hmm. It might be nice to use the same signature for early handlers as for normal ones. > Regards, > > Joerg