From: Linus Torvalds <torvalds@linux-foundation.org>
To: Andrea Arcangeli <aarcange@redhat.com>
Cc: qemu-devel@nongnu.org, KVM list <kvm@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linux-mm <linux-mm@kvack.org>,
Linux API <linux-api@vger.kernel.org>,
Android Kernel Team <kernel-team@android.com>,
"Kirill A. Shutemov" <kirill@shutemov.name>,
Pavel Emelyanov <xemul@parallels.com>,
Sanidhya Kashyap <sanidhya.gatech@gmail.com>,
zhang.zhanghailiang@huawei.com,
Andres Lagar-Cavilla <andreslc@google.com>,
Dave Hansen <dave@sr71.net>, Paolo Bonzini <pbonzini@redhat.com>,
Rik van Riel <riel@redhat.com>, Mel Gorman <mgorman@suse.de>,
Andy Lutomirski <luto@amacapital.net>,
Andrew Morton <akpm@linux-foundation.org>,
Sasha Levin <sasha.levin@oracle.com>,
Hugh Dickins <hughd@google.com>,
Peter Feiner <pfeiner@google.com>,
"Dr. David Alan Gilbert" <dgilbert@redhat.com>,
Christopher Covington <cov@codeaurora.org>,
Johannes Weiner <hannes@cmpxchg.org>,
Robert Love <rlove@google.com>,
Dmitry Adamushko <dmitry.adamushko@gmail.com>,
Neil Brown <neilb@suse.de>, Mike Hommey <mh@glandium.org>,
Taras Glek <tglek@mozilla.com>, Jan Kara <jack@suse.cz>,
KOSAKI Motohiro <kosaki.motohiro@gmail.com>,
Michel Lespinasse <walken@google.com>,
Minchan Kim <minchan@kernel.org>,
Keith Packard <keithp@keithp.com>,
"Huangpeng (Peter)" <peter.huangpeng@huawei.com>,
Anthony Liguori <anthony@codemonkey.ws>,
Stefan Hajnoczi <stefanha@gmail.com>,
Wenchao Xia <wenchaoqemu@gmail.com>,
Andrew Jones <drjones@redhat.com>,
Juan Quintela <quintela@redhat.com>
Subject: Re: [PATCH 19/21] userfaultfd: remap_pages: UFFDIO_REMAP preparation
Date: Thu, 5 Mar 2015 09:39:48 -0800 [thread overview]
Message-ID: <CA+55aFzW=qaO0iKZWK9BWDNHu4eOgiKOJ-=0SvzsmZawuH5_3A@mail.gmail.com> (raw)
In-Reply-To: <1425575884-2574-20-git-send-email-aarcange@redhat.com>
On Thu, Mar 5, 2015 at 9:18 AM, Andrea Arcangeli <aarcange@redhat.com> wrote:
> remap_pages is the lowlevel mm helper needed to implement
> UFFDIO_REMAP.
This function is nasty nasty nasty.
Is this really worth it? On real loads? That people are expected to use?
Considering how we just got rid of one special magic VM remapping
thing that nobody actually used, I'd really hate to add a new one.
The fact is, almost nobody ever uses anything that isn't standard
POSIX. There are no apps, and even for specialized things like
virtualization hypervisors this kind of thing is often simply not
worth it.
Quite frankly, *if* we ever merge userfaultfd, I would *strongly*
argue for not merging the remap parts. I just don't see the point. It
doesn't seem to add anything that is semantically very important -
it's *potentially* a faster copy, but even that is
(a) questionable in the first place
and
(b) unclear why anybody would ever care about performance of
infrastructure that nobody actually uses today, and future use isn't
even clear or shown to be particualrly performance-sensitive.
So basically I'd like to see better documentation, a few real use
cases (and by real I very much do *not* mean "you can use it for
this", but actual patches to actual projects that matter and that are
expected to care and merge them), and a simplified series that doesn't
do the remap thing.
Because *every* time we add a new clever interface, we end up with
approximately zero users and just pain down the line. Examples:
splice, mremap, yadda yadda.
Linus
WARNING: multiple messages have this Message-ID (diff)
From: Linus Torvalds <torvalds@linux-foundation.org>
To: Andrea Arcangeli <aarcange@redhat.com>
Cc: qemu-devel@nongnu.org, KVM list <kvm@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linux-mm <linux-mm@kvack.org>,
Linux API <linux-api@vger.kernel.org>,
Android Kernel Team <kernel-team@android.com>,
"Kirill A. Shutemov" <kirill@shutemov.name>,
Pavel Emelyanov <xemul@parallels.com>,
Sanidhya Kashyap <sanidhya.gatech@gmail.com>,
zhang.zhanghailiang@huawei.com,
Andres Lagar-Cavilla <andreslc@google.com>,
Dave Hansen <dave@sr71.net>, Paolo Bonzini <pbonzini@redhat.com>,
Rik van Riel <riel@redhat.com>, Mel Gorman <mgorman@suse.de>,
Andy Lutomirski <luto@amacapital.net>,
Andrew Morton <akpm@linux-foundation.org>,
Sasha Levin <sasha.levin@oracle.com>,
Hugh Dickins <hughd@google.com>,
Peter Feiner <pfeiner@google.com>,
"Dr. David Alan Gilbert" <dgilbert@redhat.com>,
Christopher Covington <cov@codeaurora.org>,
Johannes Weiner <hannes@cmpxchg.>
Subject: Re: [PATCH 19/21] userfaultfd: remap_pages: UFFDIO_REMAP preparation
Date: Thu, 5 Mar 2015 09:39:48 -0800 [thread overview]
Message-ID: <CA+55aFzW=qaO0iKZWK9BWDNHu4eOgiKOJ-=0SvzsmZawuH5_3A@mail.gmail.com> (raw)
In-Reply-To: <1425575884-2574-20-git-send-email-aarcange@redhat.com>
On Thu, Mar 5, 2015 at 9:18 AM, Andrea Arcangeli <aarcange@redhat.com> wrote:
> remap_pages is the lowlevel mm helper needed to implement
> UFFDIO_REMAP.
This function is nasty nasty nasty.
Is this really worth it? On real loads? That people are expected to use?
Considering how we just got rid of one special magic VM remapping
thing that nobody actually used, I'd really hate to add a new one.
The fact is, almost nobody ever uses anything that isn't standard
POSIX. There are no apps, and even for specialized things like
virtualization hypervisors this kind of thing is often simply not
worth it.
Quite frankly, *if* we ever merge userfaultfd, I would *strongly*
argue for not merging the remap parts. I just don't see the point. It
doesn't seem to add anything that is semantically very important -
it's *potentially* a faster copy, but even that is
(a) questionable in the first place
and
(b) unclear why anybody would ever care about performance of
infrastructure that nobody actually uses today, and future use isn't
even clear or shown to be particualrly performance-sensitive.
So basically I'd like to see better documentation, a few real use
cases (and by real I very much do *not* mean "you can use it for
this", but actual patches to actual projects that matter and that are
expected to care and merge them), and a simplified series that doesn't
do the remap thing.
Because *every* time we add a new clever interface, we end up with
approximately zero users and just pain down the line. Examples:
splice, mremap, yadda yadda.
Linus
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
WARNING: multiple messages have this Message-ID (diff)
From: Linus Torvalds <torvalds@linux-foundation.org>
To: Andrea Arcangeli <aarcange@redhat.com>
Cc: qemu-devel@nongnu.org, KVM list <kvm@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linux-mm <linux-mm@kvack.org>,
Linux API <linux-api@vger.kernel.org>,
Android Kernel Team <kernel-team@android.com>,
"Kirill A. Shutemov" <kirill@shutemov.name>,
Pavel Emelyanov <xemul@parallels.com>,
Sanidhya Kashyap <sanidhya.gatech@gmail.com>,
zhang.zhanghailiang@huawei.com,
Andres Lagar-Cavilla <andreslc@google.com>,
Dave Hansen <dave@sr71.net>, Paolo Bonzini <pbonzini@redhat.com>,
Rik van Riel <riel@redhat.com>, Mel Gorman <mgorman@suse.de>,
Andy Lutomirski <luto@amacapital.net>,
Andrew Morton <akpm@linux-foundation.org>,
Sasha Levin <sasha.levin@oracle.com>,
Hugh Dickins <hughd@google.com>,
Peter Feiner <pfeiner@google.com>,
"Dr. David Alan Gilbert" <dgilbert@redhat.com>,
Christopher Covington <cov@codeaurora.org>,
Johannes Weiner <hannes@cmpxchg.
Subject: Re: [PATCH 19/21] userfaultfd: remap_pages: UFFDIO_REMAP preparation
Date: Thu, 5 Mar 2015 09:39:48 -0800 [thread overview]
Message-ID: <CA+55aFzW=qaO0iKZWK9BWDNHu4eOgiKOJ-=0SvzsmZawuH5_3A@mail.gmail.com> (raw)
In-Reply-To: <1425575884-2574-20-git-send-email-aarcange@redhat.com>
On Thu, Mar 5, 2015 at 9:18 AM, Andrea Arcangeli <aarcange@redhat.com> wrote:
> remap_pages is the lowlevel mm helper needed to implement
> UFFDIO_REMAP.
This function is nasty nasty nasty.
Is this really worth it? On real loads? That people are expected to use?
Considering how we just got rid of one special magic VM remapping
thing that nobody actually used, I'd really hate to add a new one.
The fact is, almost nobody ever uses anything that isn't standard
POSIX. There are no apps, and even for specialized things like
virtualization hypervisors this kind of thing is often simply not
worth it.
Quite frankly, *if* we ever merge userfaultfd, I would *strongly*
argue for not merging the remap parts. I just don't see the point. It
doesn't seem to add anything that is semantically very important -
it's *potentially* a faster copy, but even that is
(a) questionable in the first place
and
(b) unclear why anybody would ever care about performance of
infrastructure that nobody actually uses today, and future use isn't
even clear or shown to be particualrly performance-sensitive.
So basically I'd like to see better documentation, a few real use
cases (and by real I very much do *not* mean "you can use it for
this", but actual patches to actual projects that matter and that are
expected to care and merge them), and a simplified series that doesn't
do the remap thing.
Because *every* time we add a new clever interface, we end up with
approximately zero users and just pain down the line. Examples:
splice, mremap, yadda yadda.
Linus
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
WARNING: multiple messages have this Message-ID (diff)
From: Linus Torvalds <torvalds@linux-foundation.org>
To: Andrea Arcangeli <aarcange@redhat.com>
Cc: qemu-devel@nongnu.org, KVM list <kvm@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linux-mm <linux-mm@kvack.org>,
Linux API <linux-api@vger.kernel.org>,
Android Kernel Team <kernel-team@android.com>,
"Kirill A. Shutemov" <kirill@shutemov.name>,
Pavel Emelyanov <xemul@parallels.com>,
Sanidhya Kashyap <sanidhya.gatech@gmail.com>,
zhang.zhanghailiang@huawei.com,
Andres Lagar-Cavilla <andreslc@google.com>,
Dave Hansen <dave@sr71.net>, Paolo Bonzini <pbonzini@redhat.com>,
Rik van Riel <riel@redhat.com>, Mel Gorman <mgorman@suse.de>,
Andy Lutomirski <luto@amacapital.net>,
Andrew Morton <akpm@linux-foundation.org>,
Sasha Levin <sasha.levin@oracle.com>,
Hugh Dickins <hughd@google.com>,
Peter Feiner <pfeiner@google.com>,
"Dr. David Alan Gilbert" <dgilbert@redhat.com>,
Christopher Covington <cov@codeaurora.org>,
Johannes Weiner <hannes@cmpxchg.org>,
Robert Love <rlove@google.com>,
Dmitry Adamushko <dmitry.adamushko@gmail.com>,
Neil Brown <neilb@suse.de>, Mike Hommey <mh@glandium.org>,
Taras Glek <tglek@mozilla.com>, Jan Kara <jack@suse.cz>,
KOSAKI Motohiro <kosaki.motohiro@gmail.com>,
Michel Lespinasse <walken@google.com>,
Minchan Kim <minchan@kernel.org>,
Keith Packard <keithp@keithp.com>,
"Huangpeng (Peter)" <peter.huangpeng@huawei.com>,
Anthony Liguori <anthony@codemonkey.ws>,
Stefan Hajnoczi <stefanha@gmail.com>,
Wenchao Xia <wenchaoqemu@gmail.com>,
Andrew Jones <drjones@redhat.com>,
Juan Quintela <quintela@redhat.com>
Subject: Re: [PATCH 19/21] userfaultfd: remap_pages: UFFDIO_REMAP preparation
Date: Thu, 5 Mar 2015 09:39:48 -0800 [thread overview]
Message-ID: <CA+55aFzW=qaO0iKZWK9BWDNHu4eOgiKOJ-=0SvzsmZawuH5_3A@mail.gmail.com> (raw)
In-Reply-To: <1425575884-2574-20-git-send-email-aarcange@redhat.com>
On Thu, Mar 5, 2015 at 9:18 AM, Andrea Arcangeli <aarcange@redhat.com> wrote:
> remap_pages is the lowlevel mm helper needed to implement
> UFFDIO_REMAP.
This function is nasty nasty nasty.
Is this really worth it? On real loads? That people are expected to use?
Considering how we just got rid of one special magic VM remapping
thing that nobody actually used, I'd really hate to add a new one.
The fact is, almost nobody ever uses anything that isn't standard
POSIX. There are no apps, and even for specialized things like
virtualization hypervisors this kind of thing is often simply not
worth it.
Quite frankly, *if* we ever merge userfaultfd, I would *strongly*
argue for not merging the remap parts. I just don't see the point. It
doesn't seem to add anything that is semantically very important -
it's *potentially* a faster copy, but even that is
(a) questionable in the first place
and
(b) unclear why anybody would ever care about performance of
infrastructure that nobody actually uses today, and future use isn't
even clear or shown to be particualrly performance-sensitive.
So basically I'd like to see better documentation, a few real use
cases (and by real I very much do *not* mean "you can use it for
this", but actual patches to actual projects that matter and that are
expected to care and merge them), and a simplified series that doesn't
do the remap thing.
Because *every* time we add a new clever interface, we end up with
approximately zero users and just pain down the line. Examples:
splice, mremap, yadda yadda.
Linus
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
WARNING: multiple messages have this Message-ID (diff)
From: Linus Torvalds <torvalds@linux-foundation.org>
To: Andrea Arcangeli <aarcange@redhat.com>
Cc: Robert Love <rlove@google.com>, Dave Hansen <dave@sr71.net>,
Jan Kara <jack@suse.cz>, KVM list <kvm@vger.kernel.org>,
Neil Brown <neilb@suse.de>, Stefan Hajnoczi <stefanha@gmail.com>,
qemu-devel@nongnu.org,
Sanidhya Kashyap <sanidhya.gatech@gmail.com>,
linux-mm <linux-mm@kvack.org>,
KOSAKI Motohiro <kosaki.motohiro@gmail.com>,
Michel Lespinasse <walken@google.com>,
Taras Glek <tglek@mozilla.com>, Andrew Jones <drjones@redhat.com>,
zhang.zhanghailiang@huawei.com,
Pavel Emelyanov <xemul@parallels.com>,
Hugh Dickins <hughd@google.com>, Mel Gorman <mgorman@suse.de>,
Sasha Levin <sasha.levin@oracle.com>,
Android Kernel Team <kernel-team@android.com>,
"Dr. David Alan Gilbert" <dgilbert@redhat.com>,
"Huangpeng (Peter)" <peter.huangpeng@huawei.com>,
Andres Lagar-Cavilla <andreslc@google.com>,
Christopher Covington <cov@codeaurora.org>,
Anthony Liguori <anthony@codemonkey.ws>,
Mike Hommey <mh@glandium.org>,
"Kirill A. Shutemov" <kirill@shutemov.name>,
Keith Packard <keithp@keithp.com>,
Wenchao Xia <wenchaoqemu@gmail.com>,
Linux API <linux-api@vger.kernel.org>,
Juan Quintela <quintela@redhat.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Andy Lutomirski <luto@amacapital.net>,
Minchan Kim <minchan@kernel.org>,
Dmitry Adamushko <dmitry.adamushko@gmail.com>,
Johannes Weiner <hannes@cmpxchg.org>,
Paolo Bonzini <pbonzini@redhat.com>,
Andrew Morton <akpm@linux-foundation.org>,
Peter Feiner <pfeiner@google.com>
Subject: Re: [Qemu-devel] [PATCH 19/21] userfaultfd: remap_pages: UFFDIO_REMAP preparation
Date: Thu, 5 Mar 2015 09:39:48 -0800 [thread overview]
Message-ID: <CA+55aFzW=qaO0iKZWK9BWDNHu4eOgiKOJ-=0SvzsmZawuH5_3A@mail.gmail.com> (raw)
In-Reply-To: <1425575884-2574-20-git-send-email-aarcange@redhat.com>
On Thu, Mar 5, 2015 at 9:18 AM, Andrea Arcangeli <aarcange@redhat.com> wrote:
> remap_pages is the lowlevel mm helper needed to implement
> UFFDIO_REMAP.
This function is nasty nasty nasty.
Is this really worth it? On real loads? That people are expected to use?
Considering how we just got rid of one special magic VM remapping
thing that nobody actually used, I'd really hate to add a new one.
The fact is, almost nobody ever uses anything that isn't standard
POSIX. There are no apps, and even for specialized things like
virtualization hypervisors this kind of thing is often simply not
worth it.
Quite frankly, *if* we ever merge userfaultfd, I would *strongly*
argue for not merging the remap parts. I just don't see the point. It
doesn't seem to add anything that is semantically very important -
it's *potentially* a faster copy, but even that is
(a) questionable in the first place
and
(b) unclear why anybody would ever care about performance of
infrastructure that nobody actually uses today, and future use isn't
even clear or shown to be particualrly performance-sensitive.
So basically I'd like to see better documentation, a few real use
cases (and by real I very much do *not* mean "you can use it for
this", but actual patches to actual projects that matter and that are
expected to care and merge them), and a simplified series that doesn't
do the remap thing.
Because *every* time we add a new clever interface, we end up with
approximately zero users and just pain down the line. Examples:
splice, mremap, yadda yadda.
Linus
next prev parent reply other threads:[~2015-03-05 17:39 UTC|newest]
Thread overview: 158+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-05 17:17 [PATCH 00/21] RFC: userfaultfd v3 Andrea Arcangeli
2015-03-05 17:17 ` [Qemu-devel] " Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 17:17 ` [PATCH 01/21] userfaultfd: waitqueue: add nr wake parameter to __wake_up_locked_key Andrea Arcangeli
2015-03-05 17:17 ` [Qemu-devel] " Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 17:17 ` [PATCH 02/21] userfaultfd: linux/Documentation/vm/userfaultfd.txt Andrea Arcangeli
2015-03-05 17:17 ` [Qemu-devel] " Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-06 15:39 ` [Qemu-devel] " Eric Blake
2015-03-06 15:39 ` Eric Blake
2015-03-06 15:39 ` Eric Blake
2015-03-06 15:39 ` Eric Blake
2015-03-05 17:17 ` [PATCH 03/21] userfaultfd: uAPI Andrea Arcangeli
2015-03-05 17:17 ` [Qemu-devel] " Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 17:17 ` [PATCH 04/21] userfaultfd: linux/userfaultfd_k.h Andrea Arcangeli
2015-03-05 17:17 ` [Qemu-devel] " Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 17:17 ` [PATCH 05/21] userfaultfd: add vm_userfaultfd_ctx to the vm_area_struct Andrea Arcangeli
2015-03-05 17:17 ` [Qemu-devel] " Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 17:48 ` Pavel Emelyanov
2015-03-05 17:48 ` [Qemu-devel] " Pavel Emelyanov
2015-03-05 17:48 ` Pavel Emelyanov
2015-03-05 17:48 ` Pavel Emelyanov
2015-03-05 17:48 ` Pavel Emelyanov
2015-03-05 17:17 ` [PATCH 06/21] userfaultfd: add VM_UFFD_MISSING and VM_UFFD_WP Andrea Arcangeli
2015-03-05 17:17 ` [Qemu-devel] " Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 17:17 ` [PATCH 07/21] userfaultfd: call handle_userfault() for userfaultfd_missing() faults Andrea Arcangeli
2015-03-05 17:17 ` [Qemu-devel] " Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 17:17 ` [PATCH 08/21] userfaultfd: teach vma_merge to merge across vma->vm_userfaultfd_ctx Andrea Arcangeli
2015-03-05 17:17 ` [Qemu-devel] " Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 17:17 ` [PATCH 09/21] userfaultfd: prevent khugepaged to merge if userfaultfd is armed Andrea Arcangeli
2015-03-05 17:17 ` [Qemu-devel] " Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 17:17 ` [PATCH 10/21] userfaultfd: add new syscall to provide memory externalization Andrea Arcangeli
2015-03-05 17:17 ` [Qemu-devel] " Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 17:57 ` Pavel Emelyanov
2015-03-05 17:57 ` [Qemu-devel] " Pavel Emelyanov
2015-03-05 17:57 ` Pavel Emelyanov
2015-03-05 17:57 ` Pavel Emelyanov
2015-03-05 17:57 ` Pavel Emelyanov
2015-03-06 10:48 ` Michael Kerrisk (man-pages)
2015-03-06 10:48 ` [Qemu-devel] " Michael Kerrisk (man-pages)
2015-03-06 10:48 ` Michael Kerrisk (man-pages)
2015-03-06 10:48 ` Michael Kerrisk (man-pages)
2015-03-16 10:45 ` Thomas Martitz
2015-03-05 17:17 ` [PATCH 11/21] userfaultfd: buildsystem activation Andrea Arcangeli
2015-03-05 17:17 ` [Qemu-devel] " Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 17:17 ` [PATCH 12/21] userfaultfd: activate syscall Andrea Arcangeli
2015-03-05 17:17 ` [Qemu-devel] " Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 17:17 ` [PATCH 13/21] userfaultfd: UFFDIO_COPY|UFFDIO_ZEROPAGE uAPI Andrea Arcangeli
2015-03-05 17:17 ` [Qemu-devel] " Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 17:17 ` [PATCH 14/21] userfaultfd: mcopy_atomic|mfill_zeropage: UFFDIO_COPY|UFFDIO_ZEROPAGE preparation Andrea Arcangeli
2015-03-05 17:17 ` [Qemu-devel] " Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 18:07 ` Pavel Emelyanov
2015-03-05 18:07 ` [Qemu-devel] " Pavel Emelyanov
2015-03-05 18:07 ` Pavel Emelyanov
2015-03-05 18:07 ` Pavel Emelyanov
2015-03-05 18:07 ` Pavel Emelyanov
2015-03-05 17:17 ` [PATCH 15/21] userfaultfd: UFFDIO_COPY and UFFDIO_ZEROPAGE Andrea Arcangeli
2015-03-05 17:17 ` [Qemu-devel] " Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 17:17 ` [PATCH 16/21] userfaultfd: remap_pages: rmap preparation Andrea Arcangeli
2015-03-05 17:17 ` [Qemu-devel] " Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 17:17 ` Andrea Arcangeli
2015-03-05 17:18 ` [PATCH 17/21] userfaultfd: remap_pages: swp_entry_swapcount() preparation Andrea Arcangeli
2015-03-05 17:18 ` [Qemu-devel] " Andrea Arcangeli
2015-03-05 17:18 ` Andrea Arcangeli
2015-03-05 17:18 ` Andrea Arcangeli
2015-03-05 17:18 ` Andrea Arcangeli
2015-03-05 17:18 ` [PATCH 18/21] userfaultfd: UFFDIO_REMAP uABI Andrea Arcangeli
2015-03-05 17:18 ` [Qemu-devel] " Andrea Arcangeli
2015-03-05 17:18 ` Andrea Arcangeli
2015-03-05 17:18 ` Andrea Arcangeli
2015-03-05 17:18 ` Andrea Arcangeli
2015-03-05 17:18 ` [PATCH 19/21] userfaultfd: remap_pages: UFFDIO_REMAP preparation Andrea Arcangeli
2015-03-05 17:18 ` [Qemu-devel] " Andrea Arcangeli
2015-03-05 17:18 ` Andrea Arcangeli
2015-03-05 17:18 ` Andrea Arcangeli
2015-03-05 17:18 ` Andrea Arcangeli
2015-03-05 17:39 ` Linus Torvalds [this message]
2015-03-05 17:39 ` [Qemu-devel] " Linus Torvalds
2015-03-05 17:39 ` Linus Torvalds
2015-03-05 17:39 ` Linus Torvalds
2015-03-05 17:39 ` Linus Torvalds
2015-03-05 18:51 ` Andrea Arcangeli
2015-03-05 18:51 ` [Qemu-devel] " Andrea Arcangeli
2015-03-05 18:51 ` Andrea Arcangeli
2015-03-05 18:51 ` Andrea Arcangeli
2015-03-05 19:32 ` Linus Torvalds
2015-03-05 19:32 ` [Qemu-devel] " Linus Torvalds
2015-03-05 19:32 ` Linus Torvalds
2015-03-05 19:32 ` Linus Torvalds
2015-03-05 19:32 ` Linus Torvalds
2015-03-05 18:01 ` Pavel Emelyanov
2015-03-05 18:01 ` [Qemu-devel] " Pavel Emelyanov
2015-03-05 18:01 ` Pavel Emelyanov
2015-03-05 18:01 ` Pavel Emelyanov
2015-03-05 18:01 ` Pavel Emelyanov
2015-03-05 17:18 ` [PATCH 20/21] userfaultfd: UFFDIO_REMAP Andrea Arcangeli
2015-03-05 17:18 ` [Qemu-devel] " Andrea Arcangeli
2015-03-05 17:18 ` Andrea Arcangeli
2015-03-05 17:18 ` Andrea Arcangeli
2015-03-05 17:18 ` Andrea Arcangeli
2015-03-05 17:18 ` [PATCH 21/21] userfaultfd: add userfaultfd_wp mm helpers Andrea Arcangeli
2015-03-05 17:18 ` [Qemu-devel] " Andrea Arcangeli
2015-03-05 17:18 ` Andrea Arcangeli
2015-03-05 17:18 ` Andrea Arcangeli
2015-03-05 17:18 ` Andrea Arcangeli
2015-03-05 18:15 ` [PATCH 00/21] RFC: userfaultfd v3 Pavel Emelyanov
2015-03-05 18:15 ` [Qemu-devel] " Pavel Emelyanov
2015-03-05 18:15 ` Pavel Emelyanov
2015-03-05 18:15 ` Pavel Emelyanov
2015-03-05 18:15 ` Pavel Emelyanov
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='CA+55aFzW=qaO0iKZWK9BWDNHu4eOgiKOJ-=0SvzsmZawuH5_3A@mail.gmail.com' \
--to=torvalds@linux-foundation.org \
--cc=aarcange@redhat.com \
--cc=akpm@linux-foundation.org \
--cc=andreslc@google.com \
--cc=anthony@codemonkey.ws \
--cc=cov@codeaurora.org \
--cc=dave@sr71.net \
--cc=dgilbert@redhat.com \
--cc=dmitry.adamushko@gmail.com \
--cc=drjones@redhat.com \
--cc=hannes@cmpxchg.org \
--cc=hughd@google.com \
--cc=jack@suse.cz \
--cc=keithp@keithp.com \
--cc=kernel-team@android.com \
--cc=kirill@shutemov.name \
--cc=kosaki.motohiro@gmail.com \
--cc=kvm@vger.kernel.org \
--cc=linux-api@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=luto@amacapital.net \
--cc=mgorman@suse.de \
--cc=mh@glandium.org \
--cc=minchan@kernel.org \
--cc=neilb@suse.de \
--cc=pbonzini@redhat.com \
--cc=peter.huangpeng@huawei.com \
--cc=pfeiner@google.com \
--cc=qemu-devel@nongnu.org \
--cc=quintela@redhat.com \
--cc=riel@redhat.com \
--cc=rlove@google.com \
--cc=sanidhya.gatech@gmail.com \
--cc=sasha.levin@oracle.com \
--cc=stefanha@gmail.com \
--cc=tglek@mozilla.com \
--cc=walken@google.com \
--cc=wenchaoqemu@gmail.com \
--cc=xemul@parallels.com \
--cc=zhang.zhanghailiang@huawei.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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.