Re: [PATCH] powerpc/prom_init: Undo relocation before entering secure mode

From: Thiago Jung Bauermann
Date: Wed Sep 11 2019 - 19:58:13 EST

Thiago Jung Bauermann <bauerman@xxxxxxxxxxxxx> writes:

> The ultravisor will do an integrity check of the kernel image but we
> relocated it so the check will fail. Restore the original image by
> relocating it back to the kernel virtual base address.
> This works because during build vmlinux is linked with an expected virtual
> runtime address of KERNELBASE.
> Fixes: 6a9c930bd775 ("powerpc/prom_init: Add the ESM call to prom_init")
> Signed-off-by: Thiago Jung Bauermann <bauerman@xxxxxxxxxxxxx>

I meant to put a Suggested-by: Paul Mackerras <paulus@xxxxxxxxx>

Sorry. Will add it if there's a v2.

Thiago Jung Bauermann
IBM Linux Technology Center