From: Michael Ellerman <patch-notifications@ellerman.id.au>
To: linuxppc-dev@lists.ozlabs.org, mpe@ellerman.id.au,
Ganesh Goudar <ganeshgr@linux.ibm.com>
Cc: aneesh.kumar@linux.ibm.com, npiggin@gmail.com, mahesh@linux.vnet.ibm.com
Subject: Re: [PATCH v4] powerpc/pseries: Avoid using addr_to_pfn in real mode
Date: Sat, 24 Oct 2020 21:27:57 +1100 (AEDT) [thread overview]
Message-ID: <160353524091.3419015.8834000539209307541.b4-ty@ellerman.id.au> (raw)
In-Reply-To: <20200724063946.21378-1-ganeshgr@linux.ibm.com>
On Fri, 24 Jul 2020 12:09:46 +0530, Ganesh Goudar wrote:
> When an UE or memory error exception is encountered the MCE handler
> tries to find the pfn using addr_to_pfn() which takes effective
> address as an argument, later pfn is used to poison the page where
> memory error occurred, recent rework in this area made addr_to_pfn
> to run in real mode, which can be fatal as it may try to access
> memory outside RMO region.
>
> [...]
Applied to powerpc/fixes.
[1/1] powerpc/pseries: Avoid using addr_to_pfn in real mode
https://git.kernel.org/powerpc/c/4ff753feab021242144818b9a3ba011238218145
cheers
prev parent reply other threads:[~2020-10-24 10:29 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-24 6:39 [PATCH v4] powerpc/pseries: Avoid using addr_to_pfn in real mode Ganesh Goudar
2020-10-20 11:33 ` Ganesh
2020-10-22 3:50 ` Michael Ellerman
2020-10-24 10:27 ` Michael Ellerman [this message]
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