linux-kernel - Re: [4.4] broken conversion from efi to kernel page table

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Message-ID: <CAOAebxskdx12LvVjnqTNgwDgT3otZL_m2+oFnnTUdopH_rEAag@mail.gmail.com>
Date:   Sat, 13 Jan 2018 08:35:05 -0500
From:   Pavel Tatashin <pasha.tatashin@...cle.com>
To:     Greg KH <gregkh@...uxfoundation.org>
Cc:     Steve Sistare <steven.sistare@...cle.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Thomas Gleixner <tglx@...utronix.de>, mingo@...hat.com,
        hpa@...or.com, x86@...nel.org, Jiri Kosina <jkosina@...e.cz>,
        Hugh Dickins <hughd@...gle.com>, dave.hansen@...ux.intel.com,
        Andy Lutomirski <luto@...nel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [4.4] broken conversion from efi to kernel page table

Hi Greg,

Make sure you apply:
[PATCH 4.4 v2] x86/pti/efi: broken conversion from efi to kernel page table

It is the same patch but fixes a compiling issue when compiled
without: CONFIG_PAGE_TABLE_ISOLATION


On Sat, Jan 13, 2018 at 8:18 AM, Greg KH <gregkh@...uxfoundation.org> wrote:
> On Thu, Jan 11, 2018 at 02:07:45PM -0500, Pavel Tatashin wrote:
>> This fixes boot panics, hangs which I reported in this thread:
>>
>> http://lkml.iu.edu/hypermail/linux/kernel/1801.1/00951.html
>>
>> I have not yet verified if similar issue is applicable to newer
>> kernels.
>>
>> Re-sending it as a proper git send-email submission.
>>
>> Pavel Tatashin (1):
>>   x86/pti/efi: broken conversion from efi to kernel page table
>>
>>  arch/x86/include/asm/kaiser.h        | 8 ++++++++
>>  arch/x86/realmode/init.c             | 4 +++-
>>  arch/x86/realmode/rm/trampoline_64.S | 3 ++-
>>  3 files changed, 13 insertions(+), 2 deletions(-)
>
> Many thanks for this work, and the patch, it's greatly appreciated.
>
> Now queued up, thanks.
>
> greg k-h