[PATCH 0/2] MAINTAINERS cleanup

[PATCH 0/2] MAINTAINERS cleanup

[Wei Liu]

Based on discussions in Lars' series.

Wei Liu (2):
  MAINTAINERS: drop USB PV DRIVERS entry
  MAINTAINERS: use https for git trees

 MAINTAINERS | 16 +++++-----------
 1 file changed, 5 insertions(+), 11 deletions(-)

-- 
2.11.0


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[PATCH 1/2] MAINTAINERS: drop USB PV DRIVERS entry

[Wei Liu]

Suggested-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: Wei Liu <wei.liu2@citrix.com>
---
Cc: Andrew Cooper <andrew.cooper3@citrix.com>
Cc: George Dunlap <George.Dunlap@eu.citrix.com>
Cc: Ian Jackson <ian.jackson@eu.citrix.com>
Cc: Jan Beulich <jbeulich@suse.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Stefano Stabellini <sstabellini@kernel.org>
Cc: Tim Deegan <tim@xen.org>
Cc: Wei Liu <wei.liu2@citrix.com>
---
 MAINTAINERS | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/MAINTAINERS b/MAINTAINERS
index 4581419710..d50ba0a17c 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -407,12 +407,6 @@ S:	Obsolete
 L:	xen-devel@lists.xenproject.org
 F:	unmodified_drivers/linux-2.6/
 
-USB PV DRIVERS
-M:	Noboru Iwamatsu <n_iwamatsu@jp.fujitsu.com>
-S:	Supported
-T:	hg https://xenbits.xenproject.org/hg/linux-2.6.18-xen.hg
-F:	drivers/xen/usb*/
-
 VM EVENT, MEM ACCESS and MONITOR
 M:	Razvan Cojocaru <rcojocaru@bitdefender.com>
 M:	Tamas K Lengyel <tamas@tklengyel.com>
-- 
2.11.0


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[PATCH 2/2] MAINTAINERS: use https for git trees

[Wei Liu]

Signed-off-by: Wei Liu <wei.liu2@citrix.com>
---
Cc: Andrew Cooper <andrew.cooper3@citrix.com>
Cc: George Dunlap <George.Dunlap@eu.citrix.com>
Cc: Ian Jackson <ian.jackson@eu.citrix.com>
Cc: Jan Beulich <jbeulich@suse.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Stefano Stabellini <sstabellini@kernel.org>
Cc: Tim Deegan <tim@xen.org>
Cc: Wei Liu <wei.liu2@citrix.com>
---
 MAINTAINERS | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/MAINTAINERS b/MAINTAINERS
index d50ba0a17c..f28d0e1ee0 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -296,7 +296,7 @@ MINI-OS
 M:	Samuel Thibault <samuel.thibault@ens-lyon.org>
 S:	Supported
 L:	minios-devel@lists.xenproject.org
-T:	git git://xenbits.xenproject.org/mini-os.git
+T:	git https://xenbits.xenproject.org/git-http/mini-os.git
 F:	config/MiniOS.mk
 
 OCAML TOOLS
@@ -309,7 +309,7 @@ OVMF UPSTREAM
 M:	Anthony PERARD <anthony.perard@citrix.com>
 M:	Wei Liu <wei.liu2@citrix.com>
 S:	Supported
-T:	git git://xenbits.xenproject.org/ovmf.git
+T:	git https://xenbits.xenproject.org/git-http/ovmf.git
 
 POWER MANAGEMENT
 M:	Jan Beulich <jbeulich@suse.com>
@@ -333,13 +333,13 @@ F:	tools/python
 QEMU-DM
 M:	Ian Jackson <ian.jackson@eu.citrix.com>
 S:	Supported
-T:	git git://xenbits.xenproject.org/qemu-xen-traditional.git
+T:	git https://xenbits.xenproject.org/git-http/qemu-xen-traditional.git
 
 QEMU UPSTREAM
 M:	Stefano Stabellini <sstabellini@kernel.org>
 M:	Anthony Perard <anthony.perard@citrix.com>
 S:	Supported
-T:	git git://xenbits.xenproject.org/qemu-xen.git
+T:	git https://xenbits.xenproject.org/git-http/qemu-xen.git
 
 REMUS
 M:	Shriram Rajagopalan <rshriram@cs.ubc.ca>
@@ -367,7 +367,7 @@ F:	xen/common/sched*
 SEABIOS UPSTREAM
 M:	Wei Liu <wei.liu2@citrix.com>
 S:	Supported
-T:	git git://xenbits.xenproject.org/seabios.git
+T:	git https://xenbits.xenproject.org/git-http/seabios.git
 
 STUB DOMAINS
 M:	Samuel Thibault <samuel.thibault@ens-lyon.org>
-- 
2.11.0


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Re: [PATCH 1/2] MAINTAINERS: drop USB PV DRIVERS entry

[Jan Beulich]

>>> On 10.07.18 at 10:15, <wei.liu2@citrix.com> wrote:
> Suggested-by: Jan Beulich <jbeulich@suse.com>
> Signed-off-by: Wei Liu <wei.liu2@citrix.com>

Acked-by: Jan Beulich <jbeulich@suse.com>

Thanks for remembering this - I had long forgotten.

Jan



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Re: [PATCH 2/2] MAINTAINERS: use https for git trees

[George Dunlap]

> On Jul 10, 2018, at 9:15 AM, Wei Liu <wei.liu2@citrix.com> wrote:
> 
> Signed-off-by: Wei Liu <wei.liu2@citrix.com>

Why?

 -George

> ---
> Cc: Andrew Cooper <andrew.cooper3@citrix.com>
> Cc: George Dunlap <George.Dunlap@eu.citrix.com>
> Cc: Ian Jackson <ian.jackson@eu.citrix.com>
> Cc: Jan Beulich <jbeulich@suse.com>
> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
> Cc: Stefano Stabellini <sstabellini@kernel.org>
> Cc: Tim Deegan <tim@xen.org>
> Cc: Wei Liu <wei.liu2@citrix.com>
> ---
> MAINTAINERS | 10 +++++-----
> 1 file changed, 5 insertions(+), 5 deletions(-)
> 
> diff --git a/MAINTAINERS b/MAINTAINERS
> index d50ba0a17c..f28d0e1ee0 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -296,7 +296,7 @@ MINI-OS
> M:	Samuel Thibault <samuel.thibault@ens-lyon.org>
> S:	Supported
> L:	minios-devel@lists.xenproject.org
> -T:	git git://xenbits.xenproject.org/mini-os.git
> +T:	git https://xenbits.xenproject.org/git-http/mini-os.git
> F:	config/MiniOS.mk
> 
> OCAML TOOLS
> @@ -309,7 +309,7 @@ OVMF UPSTREAM
> M:	Anthony PERARD <anthony.perard@citrix.com>
> M:	Wei Liu <wei.liu2@citrix.com>
> S:	Supported
> -T:	git git://xenbits.xenproject.org/ovmf.git
> +T:	git https://xenbits.xenproject.org/git-http/ovmf.git
> 
> POWER MANAGEMENT
> M:	Jan Beulich <jbeulich@suse.com>
> @@ -333,13 +333,13 @@ F:	tools/python
> QEMU-DM
> M:	Ian Jackson <ian.jackson@eu.citrix.com>
> S:	Supported
> -T:	git git://xenbits.xenproject.org/qemu-xen-traditional.git
> +T:	git https://xenbits.xenproject.org/git-http/qemu-xen-traditional.git
> 
> QEMU UPSTREAM
> M:	Stefano Stabellini <sstabellini@kernel.org>
> M:	Anthony Perard <anthony.perard@citrix.com>
> S:	Supported
> -T:	git git://xenbits.xenproject.org/qemu-xen.git
> +T:	git https://xenbits.xenproject.org/git-http/qemu-xen.git
> 
> REMUS
> M:	Shriram Rajagopalan <rshriram@cs.ubc.ca>
> @@ -367,7 +367,7 @@ F:	xen/common/sched*
> SEABIOS UPSTREAM
> M:	Wei Liu <wei.liu2@citrix.com>
> S:	Supported
> -T:	git git://xenbits.xenproject.org/seabios.git
> +T:	git https://xenbits.xenproject.org/git-http/seabios.git
> 
> STUB DOMAINS
> M:	Samuel Thibault <samuel.thibault@ens-lyon.org>
> -- 
> 2.11.0
> 


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Re: [PATCH 1/2] MAINTAINERS: drop USB PV DRIVERS entry

[George Dunlap]

> On Jul 10, 2018, at 9:15 AM, Wei Liu <wei.liu2@citrix.com> wrote:
> 
> Suggested-by: Jan Beulich <jbeulich@suse.com>
> Signed-off-by: Wei Liu <wei.liu2@citrix.com>

Acked-by: George Dunlap <george.dunlap@citrix.com>

> ---
> Cc: Andrew Cooper <andrew.cooper3@citrix.com>
> Cc: George Dunlap <George.Dunlap@eu.citrix.com>
> Cc: Ian Jackson <ian.jackson@eu.citrix.com>
> Cc: Jan Beulich <jbeulich@suse.com>
> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
> Cc: Stefano Stabellini <sstabellini@kernel.org>
> Cc: Tim Deegan <tim@xen.org>
> Cc: Wei Liu <wei.liu2@citrix.com>
> ---
> MAINTAINERS | 6 ------
> 1 file changed, 6 deletions(-)
> 
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 4581419710..d50ba0a17c 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -407,12 +407,6 @@ S:	Obsolete
> L:	xen-devel@lists.xenproject.org
> F:	unmodified_drivers/linux-2.6/
> 
> -USB PV DRIVERS
> -M:	Noboru Iwamatsu <n_iwamatsu@jp.fujitsu.com>
> -S:	Supported
> -T:	hg https://xenbits.xenproject.org/hg/linux-2.6.18-xen.hg
> -F:	drivers/xen/usb*/
> -
> VM EVENT, MEM ACCESS and MONITOR
> M:	Razvan Cojocaru <rcojocaru@bitdefender.com>
> M:	Tamas K Lengyel <tamas@tklengyel.com>
> -- 
> 2.11.0
> 


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Re: [PATCH 2/2] MAINTAINERS: use https for git trees

[Jan Beulich]

>>> On 10.07.18 at 10:15, <wei.liu2@citrix.com> wrote:
> Signed-off-by: Wei Liu <wei.liu2@citrix.com>

What's wrong with git:// ? I think the commit message should be non-
empty here.

Jan



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Re: [PATCH 2/2] MAINTAINERS: use https for git trees

[Wei Liu]

On Tue, Jul 10, 2018 at 02:36:49AM -0600, Jan Beulich wrote:
> >>> On 10.07.18 at 10:15, <wei.liu2@citrix.com> wrote:
> > Signed-off-by: Wei Liu <wei.liu2@citrix.com>
> 
> What's wrong with git:// ? I think the commit message should be non-
> empty here.

git: is not encrypted, while https: is. At this time of age, it is
better to use encryption as much as possible.

Wei.

> 
> Jan
> 
> 

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Re: [PATCH 2/2] MAINTAINERS: use https for git trees

[Andrew Cooper]

On 10/07/2018 09:39, Wei Liu wrote:
> On Tue, Jul 10, 2018 at 02:36:49AM -0600, Jan Beulich wrote:
>>>>> On 10.07.18 at 10:15, <wei.liu2@citrix.com> wrote:
>>> Signed-off-by: Wei Liu <wei.liu2@citrix.com>
>> What's wrong with git:// ? I think the commit message should be non-
>> empty here.
> git: is not encrypted, while https: is. At this time of age, it is
> better to use encryption as much as possible.

And what good does encryption give you here?  The entire history is a
cryptographic block chain...

~Andrew

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Re: [PATCH 2/2] MAINTAINERS: use https for git trees

[Wei Liu]

On Tue, Jul 10, 2018 at 09:47:01AM +0100, Andrew Cooper wrote:
> On 10/07/2018 09:39, Wei Liu wrote:
> > On Tue, Jul 10, 2018 at 02:36:49AM -0600, Jan Beulich wrote:
> >>>>> On 10.07.18 at 10:15, <wei.liu2@citrix.com> wrote:
> >>> Signed-off-by: Wei Liu <wei.liu2@citrix.com>
> >> What's wrong with git:// ? I think the commit message should be non-
> >> empty here.
> > git: is not encrypted, while https: is. At this time of age, it is
> > better to use encryption as much as possible.
> 
> And what good does encryption give you here?  The entire history is a
> cryptographic block chain...

Yes, you can always verify a signed tag or whatever.

But why not provide one more layer of security while we can? Isn't that
what defence in depth is about?

Wei.

> 
> ~Andrew

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Re: [PATCH 2/2] MAINTAINERS: use https for git trees

[Ian Jackson]

Wei Liu writes ("Re: [PATCH 2/2] MAINTAINERS: use https for git trees"):
> On Tue, Jul 10, 2018 at 02:36:49AM -0600, Jan Beulich wrote:
> > On 10.07.18 at 10:15, <wei.liu2@citrix.com> wrote:
> > > Signed-off-by: Wei Liu <wei.liu2@citrix.com>
> > 
> > What's wrong with git:// ? I think the commit message should be non-
> > empty here.
> 
> git: is not encrypted, while https: is. At this time of age, it is
> better to use encryption as much as possible.

I agree with this change, so

Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>


Let me expand on Wei's reasons:

The git protocol is not just unencrypted, but also unauthenticated.
In theory it is possible to verify the signed tags for actual
releases, but that is a cumbersome process which I very much doubt
anyone really does.

As for the various branch tips, there is currently no way (unless you
have a shell account on xenbits) to get any kind of authenticated
value.

Conversely, if you use an https url, you get some cryptographic
authentication of what you are cloning.  The crypto there is far from
perfect but it is massively better than nothing.


Additionally, in general, using and supporting https also means that
*what users are accessing* is encrypted.  This enhances user privacy.
In the specific case of the git trees on xenbits this is a very minor
consideration.


Ian.

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Re: [PATCH 2/2] MAINTAINERS: use https for git trees

[George Dunlap]

On 07/10/2018 11:23 AM, Ian Jackson wrote:
> Wei Liu writes ("Re: [PATCH 2/2] MAINTAINERS: use https for git trees"):
>> On Tue, Jul 10, 2018 at 02:36:49AM -0600, Jan Beulich wrote:
>>> On 10.07.18 at 10:15, <wei.liu2@citrix.com> wrote:
>>>> Signed-off-by: Wei Liu <wei.liu2@citrix.com>
>>>
>>> What's wrong with git:// ? I think the commit message should be non-
>>> empty here.
>>
>> git: is not encrypted, while https: is. At this time of age, it is
>> better to use encryption as much as possible.
> 
> I agree with this change, so
> 
> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
> 
> 
> Let me expand on Wei's reasons:
> 
> The git protocol is not just unencrypted, but also unauthenticated.
> In theory it is possible to verify the signed tags for actual
> releases, but that is a cumbersome process which I very much doubt
> anyone really does.
> 
> As for the various branch tips, there is currently no way (unless you
> have a shell account on xenbits) to get any kind of authenticated
> value.
> 
> Conversely, if you use an https url, you get some cryptographic
> authentication of what you are cloning.  The crypto there is far from
> perfect but it is massively better than nothing.

I agree with this logic, but it should have been in the commit message.

 -George

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Re: [PATCH 2/2] MAINTAINERS: use https for git trees

[Wei Liu]

On Tue, Jul 10, 2018 at 11:28:34AM +0100, George Dunlap wrote:
> On 07/10/2018 11:23 AM, Ian Jackson wrote:
> > Wei Liu writes ("Re: [PATCH 2/2] MAINTAINERS: use https for git trees"):
> >> On Tue, Jul 10, 2018 at 02:36:49AM -0600, Jan Beulich wrote:
> >>> On 10.07.18 at 10:15, <wei.liu2@citrix.com> wrote:
> >>>> Signed-off-by: Wei Liu <wei.liu2@citrix.com>
> >>>
> >>> What's wrong with git:// ? I think the commit message should be non-
> >>> empty here.
> >>
> >> git: is not encrypted, while https: is. At this time of age, it is
> >> better to use encryption as much as possible.
> > 
> > I agree with this change, so
> > 
> > Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
> > 
> > 
> > Let me expand on Wei's reasons:
> > 
> > The git protocol is not just unencrypted, but also unauthenticated.
> > In theory it is possible to verify the signed tags for actual
> > releases, but that is a cumbersome process which I very much doubt
> > anyone really does.
> > 
> > As for the various branch tips, there is currently no way (unless you
> > have a shell account on xenbits) to get any kind of authenticated
> > value.
> > 
> > Conversely, if you use an https url, you get some cryptographic
> > authentication of what you are cloning.  The crypto there is far from
> > perfect but it is massively better than nothing.
> 
> I agree with this logic, but it should have been in the commit message.

Alright. I took it for granted that everyone would think the more
encryption the better.

I will put what Ian wrote into the commit message.

Wei.

> 
>  -George

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Re: [PATCH 2/2] MAINTAINERS: use https for git trees

[George Dunlap]

On 07/10/2018 11:30 AM, Wei Liu wrote:
> On Tue, Jul 10, 2018 at 11:28:34AM +0100, George Dunlap wrote:
>> On 07/10/2018 11:23 AM, Ian Jackson wrote:
>>> Wei Liu writes ("Re: [PATCH 2/2] MAINTAINERS: use https for git trees"):
>>>> On Tue, Jul 10, 2018 at 02:36:49AM -0600, Jan Beulich wrote:
>>>>> On 10.07.18 at 10:15, <wei.liu2@citrix.com> wrote:
>>>>>> Signed-off-by: Wei Liu <wei.liu2@citrix.com>
>>>>>
>>>>> What's wrong with git:// ? I think the commit message should be non-
>>>>> empty here.
>>>>
>>>> git: is not encrypted, while https: is. At this time of age, it is
>>>> better to use encryption as much as possible.
>>>
>>> I agree with this change, so
>>>
>>> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
>>>
>>>
>>> Let me expand on Wei's reasons:
>>>
>>> The git protocol is not just unencrypted, but also unauthenticated.
>>> In theory it is possible to verify the signed tags for actual
>>> releases, but that is a cumbersome process which I very much doubt
>>> anyone really does.
>>>
>>> As for the various branch tips, there is currently no way (unless you
>>> have a shell account on xenbits) to get any kind of authenticated
>>> value.
>>>
>>> Conversely, if you use an https url, you get some cryptographic
>>> authentication of what you are cloning.  The crypto there is far from
>>> perfect but it is massively better than nothing.
>>
>> I agree with this logic, but it should have been in the commit message.
> 
> Alright. I took it for granted that everyone would think the more
> encryption the better.
> 
> I will put what Ian wrote into the commit message.

Well in general, the more things are encrypted, the less conspicuous
encrypted traffic looks.  But on the other hand, there may be other
costs with switching from git to https -- more server computation time,
longer download time, &c.  If it were just a general "make more
encrypted traffic to make encryption of actual secrets more safe", I
don't think it would be worth degrading performance / increasing server
compute time.  But for an extra level of authentication, I think it's
worth it.

And in any case, I think it's almost always worth at least a brief line
for the archaeologists.  Imagine 10 years down the road someone wants to
know why it changed -- was it because we shut down the git servers?  Was
it because https was measured as being faster?  Was it to get around
firewalls?  Or was is just to improve authentication?  It may matter.

 -George

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Re: [PATCH 2/2] MAINTAINERS: use https for git trees

[Wei Liu]

On Tue, Jul 10, 2018 at 11:36:33AM +0100, George Dunlap wrote:
> On 07/10/2018 11:30 AM, Wei Liu wrote:
> > On Tue, Jul 10, 2018 at 11:28:34AM +0100, George Dunlap wrote:
> >> On 07/10/2018 11:23 AM, Ian Jackson wrote:
> >>> Wei Liu writes ("Re: [PATCH 2/2] MAINTAINERS: use https for git trees"):
> >>>> On Tue, Jul 10, 2018 at 02:36:49AM -0600, Jan Beulich wrote:
> >>>>> On 10.07.18 at 10:15, <wei.liu2@citrix.com> wrote:
> >>>>>> Signed-off-by: Wei Liu <wei.liu2@citrix.com>
> >>>>>
> >>>>> What's wrong with git:// ? I think the commit message should be non-
> >>>>> empty here.
> >>>>
> >>>> git: is not encrypted, while https: is. At this time of age, it is
> >>>> better to use encryption as much as possible.
> >>>
> >>> I agree with this change, so
> >>>
> >>> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
> >>>
> >>>
> >>> Let me expand on Wei's reasons:
> >>>
> >>> The git protocol is not just unencrypted, but also unauthenticated.
> >>> In theory it is possible to verify the signed tags for actual
> >>> releases, but that is a cumbersome process which I very much doubt
> >>> anyone really does.
> >>>
> >>> As for the various branch tips, there is currently no way (unless you
> >>> have a shell account on xenbits) to get any kind of authenticated
> >>> value.
> >>>
> >>> Conversely, if you use an https url, you get some cryptographic
> >>> authentication of what you are cloning.  The crypto there is far from
> >>> perfect but it is massively better than nothing.
> >>
> >> I agree with this logic, but it should have been in the commit message.
> > 
> > Alright. I took it for granted that everyone would think the more
> > encryption the better.
> > 
> > I will put what Ian wrote into the commit message.
> 
> Well in general, the more things are encrypted, the less conspicuous
> encrypted traffic looks.  But on the other hand, there may be other
> costs with switching from git to https -- more server computation time,
> longer download time, &c.  If it were just a general "make more
> encrypted traffic to make encryption of actual secrets more safe", I
> don't think it would be worth degrading performance / increasing server
> compute time.  But for an extra level of authentication, I think it's
> worth it.
> 
> And in any case, I think it's almost always worth at least a brief line
> for the archaeologists.  Imagine 10 years down the road someone wants to
> know why it changed -- was it because we shut down the git servers?  Was
> it because https was measured as being faster?  Was it to get around
> firewalls?  Or was is just to improve authentication?  It may matter.

I don't fully agree what you said above but I'm not going to argue
because I've got what I wanted. :-)

Wei.

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