Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
MIME-Version: 1.0
References: <20201012172415.GA2962950@gmail.com>
In-Reply-To: <20201012172415.GA2962950@gmail.com>
From:   Linus Torvalds <torvalds@linux-foundation.org>
Date:   Mon, 12 Oct 2020 15:07:45 -0700
Message-ID: <CAHk-=wgf8ko=b-F74+Qc+EX6M36kHx5wEBCS8nJK1WSod9UO0w@mail.gmail.com>
Subject: Re: [GIT PULL] x86/mm changes for v5.10
To:     Ingo Molnar <mingo@kernel.org>, Joerg Roedel <jroedel@suse.de>
Cc:     Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        Borislav Petkov <bp@alien8.de>,
        Peter Zijlstra <a.p.zijlstra@chello.nl>,
        Andrew Morton <akpm@linux-foundation.org>
Content-Type: text/plain; charset="UTF-8"
Precedence: bulk

On Mon, Oct 12, 2020 at 10:24 AM Ingo Molnar <mingo@kernel.org> wrote:
>
> Do not sync vmalloc/ioremap mappings on x86-64 kernels.
>
> Hopefully now without the bugs!

Let's hope so.

If this turns out to work this time, can we do a similar preallocation
of the page directories on 32-bit? Because I think now x86-32 is the
only remaining case of doing that arch_sync_kernel_mappings() thing.

Or is there some reason that won't work that I've lost sight of?

                   Linus