From: Christoph Hellwig <hch@infradead.org>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: "Christoph Hellwig" <hch@infradead.org>,
"Christian König" <christian.koenig@amd.com>,
"David Stevens" <stevensd@chromium.org>,
"Sean Christopherson" <seanjc@google.com>,
"Yu Zhang" <yu.c.zhang@linux.intel.com>,
"Isaku Yamahata" <isaku.yamahata@gmail.com>,
"Zhi Wang" <zhi.wang.linux@gmail.com>,
"Maxim Levitsky" <mlevitsk@redhat.com>,
kvmarm@lists.linux.dev, linux-kernel@vger.kernel.org,
kvm@vger.kernel.org
Subject: Re: [PATCH v11 0/8] KVM: allow mapping non-refcounted pages
Date: Mon, 18 Mar 2024 16:20:39 -0700 [thread overview]
Message-ID: <ZfjMRzJrN6cfhHJI@infradead.org> (raw)
In-Reply-To: <CABgObfZCay5-zaZd9mCYGMeS106L055CxsdOWWvRTUk2TPYycg@mail.gmail.com>
On Mon, Mar 18, 2024 at 02:10:55PM +0100, Paolo Bonzini wrote:
> Another possibility is to have a double-underscore version that allows
> FOLL_GET, and have the "clean" kvm_follow_pfn() forbid it. So you
> would still have the possibility to convert to __kvm_follow_pfn() with
> FOLL_GET first, and then when you remove the refcount you switch to
> kvm_follow_pfn().
That does sound much better. Then again anything that actually wants
pages (either for a good reason or historic reasons) really should be
using get/pin_user_pages anyway and not use follow_pte.
next prev parent reply other threads:[~2024-03-18 23:20 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-29 2:57 [PATCH v11 0/8] KVM: allow mapping non-refcounted pages David Stevens
2024-02-29 2:57 ` [PATCH v11 1/8] KVM: Assert that a page's refcount is elevated when marking accessed/dirty David Stevens
2024-02-29 2:57 ` [PATCH v11 2/8] KVM: Relax BUG_ON argument validation David Stevens
2024-02-29 2:57 ` [PATCH v11 3/8] KVM: mmu: Introduce kvm_follow_pfn() David Stevens
2024-02-29 2:57 ` [PATCH v11 4/8] KVM: mmu: Improve handling of non-refcounted pfns David Stevens
2024-02-29 2:57 ` [PATCH v11 5/8] KVM: Migrate kvm_vcpu_map() to kvm_follow_pfn() David Stevens
2024-02-29 2:57 ` [PATCH v11 6/8] KVM: x86: Migrate " David Stevens
2024-02-29 2:57 ` [PATCH v11 7/8] KVM: x86/mmu: Track if sptes refer to refcounted pages David Stevens
2024-02-29 2:57 ` [PATCH v11 8/8] KVM: x86/mmu: Handle non-refcounted pages David Stevens
2024-04-04 16:03 ` Dmitry Osipenko
2024-04-15 7:28 ` David Stevens
2024-04-15 9:36 ` Paolo Bonzini
2024-02-29 13:36 ` [PATCH v11 0/8] KVM: allow mapping " Christoph Hellwig
2024-03-13 4:55 ` David Stevens
2024-03-13 9:55 ` Christian König
2024-03-13 13:34 ` Sean Christopherson
2024-03-13 14:37 ` Christian König
2024-03-13 14:48 ` Sean Christopherson
[not found] ` <9e604f99-5b63-44d7-8476-00859dae1dc4@amd.com>
2024-03-13 15:09 ` Christian König
2024-03-13 15:47 ` Sean Christopherson
[not found] ` <93df19f9-6dab-41fc-bbcd-b108e52ff50b@amd.com>
2024-03-13 17:26 ` Sean Christopherson
[not found] ` <c84fcf0a-f944-4908-b7f6-a1b66a66a6bc@amd.com>
2024-03-14 9:20 ` Christian König
2024-03-14 11:31 ` David Stevens
2024-03-14 11:51 ` Christian König
2024-03-14 14:45 ` Sean Christopherson
2024-03-18 1:26 ` Christoph Hellwig
2024-03-18 13:10 ` Paolo Bonzini
2024-03-18 23:20 ` Christoph Hellwig [this message]
2024-03-14 16:17 ` Sean Christopherson
2024-03-14 17:19 ` Sean Christopherson
2024-03-15 17:59 ` Sean Christopherson
2024-03-20 20:54 ` Axel Rasmussen
2024-03-13 13:33 ` Christoph Hellwig
2024-06-21 18:32 ` Sean Christopherson
2024-07-31 11:41 ` Alex Bennée
2024-07-31 15:01 ` Sean Christopherson
2024-08-05 23:44 ` David Stevens
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=ZfjMRzJrN6cfhHJI@infradead.org \
--to=hch@infradead.org \
--cc=christian.koenig@amd.com \
--cc=isaku.yamahata@gmail.com \
--cc=kvm@vger.kernel.org \
--cc=kvmarm@lists.linux.dev \
--cc=linux-kernel@vger.kernel.org \
--cc=mlevitsk@redhat.com \
--cc=pbonzini@redhat.com \
--cc=seanjc@google.com \
--cc=stevensd@chromium.org \
--cc=yu.c.zhang@linux.intel.com \
--cc=zhi.wang.linux@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox