[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <8fca2faa-1bac-2252-3719-8d393e2f2661@linux.intel.com>
Date: Thu, 22 Feb 2018 14:05:19 -0800
From: Dave Hansen <dave.hansen@...ux.intel.com>
To: Andy Lutomirski <luto@...nel.org>
Cc: Nadav Amit <namit@...are.com>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"aarcange@...hat.com" <aarcange@...hat.com>,
"torvalds@...ux-foundation.org" <torvalds@...ux-foundation.org>,
"keescook@...gle.com" <keescook@...gle.com>,
"hughd@...gle.com" <hughd@...gle.com>,
"jgross@...e.com" <jgross@...e.com>,
"x86@...nel.org" <x86@...nel.org>
Subject: Re: [RFC][PATCH 04/10] x86/espfix: use kernel-default PTE mask
On 02/22/2018 01:59 PM, Andy Lutomirski wrote:
>> I think it's good practice to just expose only the *minimal* amount of
>> data necessary. It's easier to audit and less likely to expose things
>> accidentall.
> But espfix64 is geniunely global. I'm confused.
I'm the confused one.
In my *first* set of patches to do this, I missed making the espfix64
area global. This new code apparently got it right, but I assumed the
"new" global area that showed up was a mistake, thus this patch.
I'll change this patch into a commenting patch that calls out the need
for keeping _PAGE_GLOBAL.
Powered by blists - more mailing lists