linux-kernel - Re: [PATCH 0/2] x86/mm: A _PAGE

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Message-ID: <CALCETrXV-Jze=yw9_Q9BXWCEqP4uGNFkjR3wfHNmO6AS3dbiNw@mail.gmail.com>
Date:	Tue, 19 Jan 2016 11:44:47 -0800
From:	Andy Lutomirski <luto@...capital.net>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	Andy Lutomirski <luto@...nel.org>, Pavel Machek <pavel@....cz>,
	X86 ML <x86@...nel.org>,
	Arjan van de Ven <arjan@...ux.intel.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Borislav Petkov <bp@...en8.de>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Stephen Smalley <sds@...ho.nsa.gov>,
	Brian Gerst <brgerst@...il.com>,
	Denys Vlasenko <dvlasenk@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>, Mike Galbraith <efault@....de>,
	Peter Zijlstra <peterz@...radead.org>
Subject: Re: [PATCH 0/2] x86/mm: A _PAGE_NX fixlet and a kmap cleanup

On Tue, Jan 19, 2016 at 1:26 AM, Ingo Molnar <mingo@...nel.org> wrote:
>
> * Andy Lutomirski <luto@...nel.org> wrote:
>
>> The fixlet might help with some WX warnings.  The kmap cleanup is
>> just a cleanup.
>>
>> This is very lightly tested.
>>
>> Andy Lutomirski (2):
>>   x86_32/mm: Set NX in __supported_pte_mask before enabling paging
>>   x86/mm: Make kmap_prot into a #define
>>
>>  arch/x86/include/asm/fixmap.h | 2 +-
>>  arch/x86/kernel/head_32.S     | 6 ++++++
>>  arch/x86/mm/init_32.c         | 3 ---
>>  arch/x86/mm/setup_nx.c        | 5 ++---
>>  4 files changed, 9 insertions(+), 7 deletions(-)
>
> Noticed this older submission, but the first patch does not apply anymore. Or does
> it have other dependencies?
>

It conflicts with Boris's cpu_has_xyz cleanup.  I'll resend.

--Andy