From: Thiago Jung Bauermann <bauerman@linux.ibm.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: Ram Pai <linuxram@us.ibm.com>,
Mike Anderson <andmike@linux.ibm.com>,
Paul Mackerras <paulus@samba.org>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] powerpc/prom_init: Undo relocation before entering secure mode
Date: Fri, 27 Sep 2019 17:38:38 -0300 [thread overview]
Message-ID: <87v9td5vap.fsf@morokweng.localdomain> (raw)
In-Reply-To: <875zly1jbo.fsf@morokweng.localdomain>
Thiago Jung Bauermann <bauerman@linux.ibm.com> writes:
> Thiago Jung Bauermann <bauerman@linux.ibm.com> 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@linux.ibm.com>
>
> I meant to put a Suggested-by: Paul Mackerras <paulus@samba.org>
>
> Sorry. Will add it if there's a v2.
Ping?
--
Thiago Jung Bauermann
IBM Linux Technology Center
WARNING: multiple messages have this Message-ID (diff)
From: Thiago Jung Bauermann <bauerman@linux.ibm.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: Paul Mackerras <paulus@samba.org>,
Mike Anderson <andmike@linux.ibm.com>,
Ram Pai <linuxram@us.ibm.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] powerpc/prom_init: Undo relocation before entering secure mode
Date: Fri, 27 Sep 2019 17:38:38 -0300 [thread overview]
Message-ID: <87v9td5vap.fsf@morokweng.localdomain> (raw)
In-Reply-To: <875zly1jbo.fsf@morokweng.localdomain>
Thiago Jung Bauermann <bauerman@linux.ibm.com> writes:
> Thiago Jung Bauermann <bauerman@linux.ibm.com> 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@linux.ibm.com>
>
> I meant to put a Suggested-by: Paul Mackerras <paulus@samba.org>
>
> Sorry. Will add it if there's a v2.
Ping?
--
Thiago Jung Bauermann
IBM Linux Technology Center
next prev parent reply other threads:[~2019-09-27 20:40 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-11 16:34 [PATCH] powerpc/prom_init: Undo relocation before entering secure mode Thiago Jung Bauermann
2019-09-11 16:34 ` Thiago Jung Bauermann
2019-09-11 23:53 ` Thiago Jung Bauermann
2019-09-11 23:53 ` Thiago Jung Bauermann
2019-09-27 20:38 ` Thiago Jung Bauermann [this message]
2019-09-27 20:38 ` Thiago Jung Bauermann
2019-10-18 15:05 ` Ram Pai
2019-10-18 15:05 ` Ram Pai
2019-10-25 11:03 ` Michael Ellerman
2019-10-25 11:03 ` Michael Ellerman
2019-10-30 12:16 ` Michael Ellerman
2019-10-30 12:16 ` Michael Ellerman
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