Re: [PATCH AUTOSEL 5.15 081/188] s390/nmi: add missing __pa/__va address conversion of extended save area

From: Sasha Levin
Date: Sat Jan 22 2022 - 14:18:44 EST


On Tue, Jan 18, 2022 at 09:18:40AM +0100, Christian Borntraeger wrote:
Am 18.01.22 um 03:30 schrieb Sasha Levin:
From: Heiko Carstens <hca@xxxxxxxxxxxxx>

[ Upstream commit 402ff5a3387dc8ec6987a80d3ce26b0c25773622 ]

Add missing __pa/__va address conversion of machine check extended
save area designation, which is an absolute address.


vv
Note: this currently doesn't fix a real bug, since virtual addresses
are indentical to physical ones.
^^

Sasha,
please note the disclaimer above. There will be plenty of such fixes
in s390 code and there is no point in backporting single fixes to stable.
It will provide no benefit on its own but adds a risk of regression.

Sure, I'll drop it. Thanks!

--
Thanks,
Sasha