On Mon, Mar 14, 2016 at 11:24 AM, Andy Lutomirski <luto@xxxxxxxxxxxxxx> wrote:
>
> The code in my queue is, literally:
>
> bool ex_handler_rdmsr_unsafe(const struct exception_table_entry *fixup,
> struct pt_regs *regs, int trapnr)
> {
> WARN_ONCE(1, "unchecked MSR access error: RDMSR from 0x%x",
> (unsigned int)regs->cx);
>
> /* Pretend that the read succeeded and returned 0. */
> regs->ip = ex_fixup_addr(fixup);
> regs->ax = 0;
> regs->dx = 0;
> return true;
> }
> EXPORT_SYMBOL(ex_handler_rdmsr_unsafe);
I guess I can live with this, as long as we also extend the
early-fault handling to work with the special exception handlers.
And as long as people start understanding that killing the machine is
a bad bad bad thing. It's a debugging nightmare.
Linus
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