Re: Changing aarch64 pointer authentication algorithm in qemu-user

[Avi Kivity]

On 11/04/2022 12.25, Peter Maydell wrote:
> On Sun, 10 Apr 2022 at 21:03, Avi Kivity <avi@scylladb.com> wrote:
> > I'm using qemu to cross-build container images with docker. It works
> > well, but aarch64 emulation is slow, due to pointer authentication.
> >
> >
> > The documentation refers to a pauth-impdef cpu feature to speed it up,
> > but I could not find an example. What is the incantation?
> "-cpu max,pauth-impdef=on" or similar should do.


Thanks, subjectively feels much faster.


In case someone googles this, 
https://github.com/avikivity/qemu-aarch64-static-fast can save you a bit 
of work.