On Sat, Jan 06, 2018 at 01:30:59AM +0100, Borislav Petkov wrote: > On Fri, Jan 05, 2018 at 11:08:06AM -0600, Josh Poimboeuf wrote: > > I seem to recall that we also discussed the need for this for converting > > pvops to use alternatives, though the "why" is eluding me at the moment. > > Ok, here's something which seems to work in my VM here. I'll continue > playing with it tomorrow. Josh, if you have some example sequences for > me to try, send them my way pls.
Here's the use case I had in mind before. With paravirt, ENABLE_INTERRUPTS(CLBR_NONE) becomes push %rax call *pv_irq_ops.irq_enable pop %rax and I wanted to apply those instructions with an alternative. It doesn't work currently because the 'call' isn't first. -- Josh
