From: Ingo Molnar <mingo@kernel.org>
To: Pavel Tatashin <pasha.tatashin@oracle.com>
Cc: steven.sistare@oracle.com, linux-kernel@vger.kernel.org,
tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com,
x86@kernel.org, gregkh@linuxfoundation.org, jkosina@suse.cz,
hughd@google.com, dave.hansen@linux.intel.com, luto@kernel.org,
torvalds@linux-foundation.org
Subject: Re: [PATCH 4.9] x86/pti/efi: broken conversion from efi to kernel page table
Date: Fri, 12 Jan 2018 14:58:47 +0100 [thread overview]
Message-ID: <20180112135847.iecmcq4r2modzw4n@gmail.com> (raw)
In-Reply-To: <20180111215820.29736-1-pasha.tatashin@oracle.com>
* Pavel Tatashin <pasha.tatashin@oracle.com> wrote:
> The page table order must be increased for EFI table in order to avoid a
> bug where NMI tries to change the page table to kernel page table, while
> efi page table is active.
>
> For more disccussion about this bug, see this thread:
> http://lkml.iu.edu/hypermail/linux/kernel/1801.1/00951.html
>
> Signed-off-by: Pavel Tatashin <pasha.tatashin@oracle.com>
> Reviewed-by: Steven Sistare <steven.sistare@oracle.com>
> ---
> arch/x86/include/asm/pgalloc.h | 11 +++++++++++
> arch/x86/platform/efi/efi_64.c | 2 +-
> 2 files changed, 12 insertions(+), 1 deletion(-)
Is there a Git tree/branch I could follow to see the very latest v4.9 PTI backport
commits?
Thanks,
Ingo
next prev parent reply other threads:[~2018-01-12 13:58 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-11 21:58 [PATCH 4.9] x86/pti/efi: broken conversion from efi to kernel page table Pavel Tatashin
2018-01-12 13:58 ` Ingo Molnar [this message]
2018-01-12 14:09 ` Pavel Tatashin
2018-01-12 14:27 ` Jiri Kosina
2018-01-13 13:16 ` Greg KH
2018-01-13 13:18 ` Greg KH
2018-01-13 17:12 ` Greg KH
2018-01-13 17:40 ` Pavel Tatashin
2018-01-13 18:14 ` Greg KH
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