[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20190207095056.GA32511@hirez.programming.kicks-ass.net>
Date: Thu, 7 Feb 2019 10:50:56 +0100
From: Peter Zijlstra <peterz@...radead.org>
To: Dave Hansen <dave.hansen@...el.com>
Cc: "Luck, Tony" <tony.luck@...el.com>, Ingo Molnar <mingo@...nel.org>,
Linus Torvalds <torvalds@...ux-foundation.org>,
linux-kernel@...r.kernel.org,
Dave Hansen <dave.hansen@...ux.intel.com>,
Andy Lutomirski <luto@...nel.org>,
Borislav Petkov <bp@...en8.de>,
Thomas Gleixner <tglx@...utronix.de>,
Rik van Riel <riel@...riel.com>
Subject: Re: [GIT PULL] x86/mm changes for v4.21
On Wed, Feb 06, 2019 at 04:33:54PM -0800, Dave Hansen wrote:
> I wonder if the patches that you bisected to just changed the flushing
> from being CR3-based (and not taking an address) to being INVPCID-based,
> and taking an address that is sensitive to canonicality.
That is indeed one of the things that patch series does; before this it
would always flush world for ARRAY interfaces.
I'll have a look at the code; I seem to remember there being test for
canonical addresses, maybe they're not in the right place.
Powered by blists - more mailing lists