From: Paolo Bonzini <pbonzini@redhat.com>
To: Jann Horn <jannh@google.com>, joel@joelfernandes.org
Cc: "kernel list" <linux-kernel@vger.kernel.org>,
Linux-MM <linux-mm@kvack.org>,
kernel-team@android.com, "Minchan Kim" <minchan@google.com>,
"Hugh Dickins" <hughd@google.com>,
lokeshgidra@google.com,
"Andrew Morton" <akpm@linux-foundation.org>,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
"Kate Stewart" <kstewart@linuxfoundation.org>,
pombredanne@nexb.com, "Thomas Gleixner" <tglx@linutronix.de>,
"Boris Ostrovsky" <boris.ostrovsky@oracle.com>,
"Juergen Gross" <jgross@suse.com>,
"Radim Krčmář" <rkrcmar@redhat.com>,
kvm@vger.kernel.org
Subject: Re: [PATCH] mm: Speed up mremap on large regions
Date: Fri, 12 Oct 2018 09:24:32 +0200 [thread overview]
Message-ID: <927d98c0-ec81-ce7a-994d-6405abce18db@redhat.com> (raw)
In-Reply-To: <CAG48ez3yLkMcyaTXFt_+w8_-HtmrjW=XB51DDQSGdjPj43XWmA@mail.gmail.com>
On 12/10/2018 05:21, Jann Horn wrote:
> I don't know how this interacts with shadow paging implementations.
Shadow paging simply uses MMU notifiers and that does not assume that
PTE invalidation is atomic. The invalidate_range_start and
invalidate_range_end calls are not affected by Joel's patch, so it's ok
for KVM and also for other users of MMU notifiers.
Paolo
prev parent reply other threads:[~2018-10-12 7:24 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-09 20:14 [PATCH] mm: Speed up mremap on large regions Joel Fernandes (Google)
2018-10-09 21:38 ` Andrew Morton
2018-10-09 23:08 ` Joel Fernandes
2018-10-09 22:02 ` Kirill A. Shutemov
2018-10-09 23:04 ` Joel Fernandes
2018-10-10 10:00 ` Kirill A. Shutemov
2018-10-11 0:46 ` Joel Fernandes
2018-10-11 0:50 ` Joel Fernandes
2018-10-11 5:14 ` Kirill A. Shutemov
2018-10-11 8:11 ` Kirill A. Shutemov
2018-10-12 1:47 ` Joel Fernandes
2018-10-11 8:17 ` Kirill A. Shutemov
2018-10-11 12:02 ` Michal Hocko
2018-10-12 3:21 ` Jann Horn
2018-10-12 5:29 ` Juergen Gross
2018-10-12 5:34 ` Jann Horn
2018-10-12 7:29 ` Juergen Gross
2018-10-12 7:24 ` Paolo Bonzini [this message]
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