Re: [PATCH 1/3] x86/paravirt: Make read_cr2() CALLEE_SAVE

[Juergen Gross]

On 03.07.19 12:27, root wrote:
> The one paravirt read_cr2() implementation (Xen) is actually quite
> trivial and doesn't need to clobber anything other than the return
> register. By making read_cr2() CALLEE_SAVE we avoid all the PUSH/POP
> nonsense and allow more convenient use from assembly.
>
> Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>

Reviewed-by: Juergen Gross <jgross@xxxxxxxx>


Juergen