Message ID | 20211209142640.24437-1-iwj@xenproject.org (mailing list archive) |
---|---|
State | New, archived |
Headers | show |
Series | SUPPORT.md, MAINTAINERS: De-support qemu-xen-traditional | expand |
Hi Ian, On 09/12/2021 14:26, Ian Jackson wrote: > In 4.16 we changed to not build this by default. I think it is now > time to explicitly desupport it, completely, in favour of Linux dm > stub domains. > > Signed-off-by: Ian Jackson <iwj@xenproject.org> > --- > MAINTAINERS | 2 +- > SUPPORT.md | 18 +++++++++--------- > 2 files changed, 10 insertions(+), 10 deletions(-) > > diff --git a/MAINTAINERS b/MAINTAINERS > index e43dc0edce..933579541f 100644 > --- a/MAINTAINERS > +++ b/MAINTAINERS > @@ -455,7 +455,7 @@ S: Supported > F: tools/python > > QEMU-DM > -S: Supported > +S: Obsolete > T: git https://xenbits.xenproject.org/git-http/qemu-xen-traditional.git > > QEMU UPSTREAM > diff --git a/SUPPORT.md b/SUPPORT.md > index 3a34933c89..b64ebee93b 100644 > --- a/SUPPORT.md > +++ b/SUPPORT.md > @@ -802,17 +802,17 @@ See the section **Blkback** for image formats supported by QEMU. > ### qemu-xen-traditional ### > > The Xen Project provides an old version of qemu with modifications > -which enable use as a device model stub domain. The old version is > -normally selected by default only in a stub dm configuration, but it > -can be requested explicitly in other configurations, for example in > -`xl` with `device_model_version="QEMU_XEN_TRADITIONAL"`. > +which enable use as a device model stub domain. This old version is > +not built by default. Even if it is build, it is normally selected by > +default only in a stub dm configuration, but it can be requested > +explicitly in other configurations, for example in `xl` with > +`device_model_version="QEMU_XEN_TRADITIONAL"`. > > - Status, Device Model Stub Domains: Supported, with caveats > - Status, as host process device model: No security support, not recommended > +When device model stub domains are desired for the additional > +security, we recommend using a device model stub domain consisting of > +a modern qemu and a Linux kernel. Looking at SUPPORT.md, we have: ### Linux device model stubdomains Support for running qemu-xen device model in a linux stubdomain. Status: Tech Preview Is it still accurate? If yes, I am not sure we can recommend user to switch to Linux stubdomain until this is fully supported. Cheers,
On 14.12.2021 20:19, Julien Grall wrote: > On 09/12/2021 14:26, Ian Jackson wrote: >> In 4.16 we changed to not build this by default. I think it is now >> time to explicitly desupport it, completely, in favour of Linux dm >> stub domains. >> >> Signed-off-by: Ian Jackson <iwj@xenproject.org> >> --- >> MAINTAINERS | 2 +- >> SUPPORT.md | 18 +++++++++--------- >> 2 files changed, 10 insertions(+), 10 deletions(-) >> >> diff --git a/MAINTAINERS b/MAINTAINERS >> index e43dc0edce..933579541f 100644 >> --- a/MAINTAINERS >> +++ b/MAINTAINERS >> @@ -455,7 +455,7 @@ S: Supported >> F: tools/python >> >> QEMU-DM >> -S: Supported >> +S: Obsolete >> T: git https://xenbits.xenproject.org/git-http/qemu-xen-traditional.git >> >> QEMU UPSTREAM >> diff --git a/SUPPORT.md b/SUPPORT.md >> index 3a34933c89..b64ebee93b 100644 >> --- a/SUPPORT.md >> +++ b/SUPPORT.md >> @@ -802,17 +802,17 @@ See the section **Blkback** for image formats supported by QEMU. >> ### qemu-xen-traditional ### >> >> The Xen Project provides an old version of qemu with modifications >> -which enable use as a device model stub domain. The old version is >> -normally selected by default only in a stub dm configuration, but it >> -can be requested explicitly in other configurations, for example in >> -`xl` with `device_model_version="QEMU_XEN_TRADITIONAL"`. >> +which enable use as a device model stub domain. This old version is >> +not built by default. Even if it is build, it is normally selected by >> +default only in a stub dm configuration, but it can be requested >> +explicitly in other configurations, for example in `xl` with >> +`device_model_version="QEMU_XEN_TRADITIONAL"`. >> >> - Status, Device Model Stub Domains: Supported, with caveats >> - Status, as host process device model: No security support, not recommended >> +When device model stub domains are desired for the additional >> +security, we recommend using a device model stub domain consisting of >> +a modern qemu and a Linux kernel. > > Looking at SUPPORT.md, we have: > > ### Linux device model stubdomains > > Support for running qemu-xen device model in a linux stubdomain. > > Status: Tech Preview > > Is it still accurate? If yes, I am not sure we can recommend user to > switch to Linux stubdomain until this is fully supported. FWIW I agree that this needs updating at the same time or in a prereq change. I guess it'll need to be someone other than Ian now to pick up and progress this patch, though. Jan
Jan Beulich writes ("Re: [PATCH] SUPPORT.md, MAINTAINERS: De-support qemu-xen-traditional"): > FWIW I agree that this needs updating at the same time or in a prereq > change. I guess it'll need to be someone other than Ian now to pick > up and progress this patch, though. Yes, I'm afraid so. Regards, Ian.
diff --git a/MAINTAINERS b/MAINTAINERS index e43dc0edce..933579541f 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -455,7 +455,7 @@ S: Supported F: tools/python QEMU-DM -S: Supported +S: Obsolete T: git https://xenbits.xenproject.org/git-http/qemu-xen-traditional.git QEMU UPSTREAM diff --git a/SUPPORT.md b/SUPPORT.md index 3a34933c89..b64ebee93b 100644 --- a/SUPPORT.md +++ b/SUPPORT.md @@ -802,17 +802,17 @@ See the section **Blkback** for image formats supported by QEMU. ### qemu-xen-traditional ### The Xen Project provides an old version of qemu with modifications -which enable use as a device model stub domain. The old version is -normally selected by default only in a stub dm configuration, but it -can be requested explicitly in other configurations, for example in -`xl` with `device_model_version="QEMU_XEN_TRADITIONAL"`. +which enable use as a device model stub domain. This old version is +not built by default. Even if it is build, it is normally selected by +default only in a stub dm configuration, but it can be requested +explicitly in other configurations, for example in `xl` with +`device_model_version="QEMU_XEN_TRADITIONAL"`. - Status, Device Model Stub Domains: Supported, with caveats - Status, as host process device model: No security support, not recommended +When device model stub domains are desired for the additional +security, we recommend using a device model stub domain consisting of +a modern qemu and a Linux kernel. -qemu-xen-traditional is security supported only for those available -devices which are supported for mainstream QEMU (see above), with -trusted driver domains (see Device Model Stub Domains). + Status: Obsolete ## Virtual Firmware
In 4.16 we changed to not build this by default. I think it is now time to explicitly desupport it, completely, in favour of Linux dm stub domains. Signed-off-by: Ian Jackson <iwj@xenproject.org> --- MAINTAINERS | 2 +- SUPPORT.md | 18 +++++++++--------- 2 files changed, 10 insertions(+), 10 deletions(-)