linux-kernel - Re: [PATCH 5.4 063/355] powerpc/kvm: Fix kvm_use_magic

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Message-ID: <YZMBVdDZzjE6Pziq@sashalap>
Date:   Mon, 15 Nov 2021 19:54:45 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     Andreas Gruenbacher <agruenba@...hat.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        LKML <linux-kernel@...r.kernel.org>,
        stable <stable@...r.kernel.org>
Subject: Re: [PATCH 5.4 063/355] powerpc/kvm: Fix kvm_use_magic_page

On Mon, Nov 15, 2021 at 06:47:41PM +0100, Andreas Gruenbacher wrote:
>Greg,
>
>On Mon, Nov 15, 2021 at 6:10 PM Greg Kroah-Hartman
><gregkh@...uxfoundation.org> wrote:
>> From: Andreas Gruenbacher <agruenba@...hat.com>
>>
>> commit 0c8eb2884a42d992c7726539328b7d3568f22143 upstream.
>>
>> When switching from __get_user to fault_in_pages_readable, commit
>> 9f9eae5ce717 broke kvm_use_magic_page: like __get_user,
>> fault_in_pages_readable returns 0 on success.
>
>I've not heard back from the maintainers about this patch so far, so
>it would probably be safer to leave it out of stable for now.

What do you mean exactly? It's upstream.

-- 
Thanks,
Sasha