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

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Message-Id: <4736qn4LRgz9sPj@ozlabs.org>
Date:   Wed, 30 Oct 2019 23:16:05 +1100 (AEDT)
From:   Michael Ellerman <patch-notifications@...erman.id.au>
To:     Thiago Jung Bauermann <bauerman@...ux.ibm.com>,
        linuxppc-dev@...ts.ozlabs.org
Cc:     Mike Anderson <andmike@...ux.ibm.com>,
        Ram Pai <linuxram@...ibm.com>, linux-kernel@...r.kernel.org,
        Paul Mackerras <paulus@...ba.org>,
        Thiago Jung Bauermann <bauerman@...ux.ibm.com>
Subject: Re: [PATCH] powerpc/prom_init: Undo relocation before entering secure mode

On Wed, 2019-09-11 at 16:34:33 UTC, Thiago Jung Bauermann wrote:
> 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@...ux.ibm.com>

Applied to powerpc fixes, thanks.

https://git.kernel.org/powerpc/c/05d9a952832cb206a32e3705eff6edebdb2207e7

cheers