On Mon, 8 Feb 2021 16:33:26 +1000, Nicholas Piggin wrote:
> Have the real mode system call entry handler branch to the kernel
> 0xc000... address and then use mtmsrd to enable the MMU, rather than use
> SRRs and rfid.
>
> Commit 8729c26e675c ("powerpc/64s/exception: Move real to virt switch
> into the common handler") implemented this style of real mode entry for
> other interrupt handlers, so this brings system calls into line with
> them, which is the main motivcation for the change.
>
> [...]
Applied to powerpc/next.
[1/1] powerpc/64s: syscall real mode entry use mtmsrd rather than rfid
https://git.kernel.org/powerpc/c/14ad0e7d04f46865775fb010ccd96fb1cc83433a
cheers
