linux-kernel - Re: [PATCH] x86/mm: Fix PAGE_KERNEL

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Message-ID: <9148a579-2843-96f8-9b64-a3adb8fcb411@intel.com>
Date:   Fri, 3 Dec 2021 09:35:47 -0800
From:   Dave Hansen <dave.hansen@...el.com>
To:     Lucas De Marchi <lucas.demarchi@...el.com>,
        Joerg Roedel <joro@...tes.org>
Cc:     x86@...nel.org, Dave Hansen <dave.hansen@...ux.intel.com>,
        Borislav Petkov <bp@...en8.de>, Ingo Molnar <mingo@...hat.com>,
        Thomas Gleixner <tglx@...utronix.de>, hpa@...or.com,
        Andy Lutomirski <luto@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Tom Lendacky <thomas.lendacky@....com>,
        Brijesh Singh <brijesh.singh@....com>,
        linux-kernel@...r.kernel.org, Joerg Roedel <jroedel@...e.de>
Subject: Re: [PATCH] x86/mm: Fix PAGE_KERNEL_IO removal breakage

On 12/2/21 4:25 PM, Lucas De Marchi wrote:
> About the first patch,
> 6b2a2138cf36 ("drm/i915/gem: Stop using PAGE_KERNEL_IO"),
> I didn't notice any regression on the i915
> side though. Is it safe to keep it? Otherwise we are probably better
> off reverting everything.

I'm just going to drop both of those for now:

	27dff0f58bde ("x86/mm: Nuke PAGE_KERNEL_IO")
	6b2a2138cf36 ("drm/i915/gem: Stop using PAGE_KERNEL_IO")

If you work out a fix, please integrate the patch from Joerg and resubmit.