[Bug 1863260] Re: gcc-9 in Ubuntu generate unbootable xen hypervisor

2020-03-11 Thread Matthias Klose
** Changed in: gcc-9 (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1863260 Title: gcc-9 in Ubuntu generate unbootable xen hypervisor To manage notifications

[Bug 1863260] Re: gcc-9 in Ubuntu generate unbootable xen hypervisor

2020-03-10 Thread Stefan Bader
We have found a fix for the issue now. There was one part of the hypervisor build which does use completely different flags. In particular it does not use -mindirect-branch, so it will not fail if cf- protection is turned on (this is under xen/arch/x86/boot and uses a buikd32.mk for setting

[Bug 1863260] Re: gcc-9 in Ubuntu generate unbootable xen hypervisor

2020-03-03 Thread Stefan Bader
Advice how to disable cf-protaction when enabled by default was taken from: https://wiki.ubuntu.com/ToolChain/CompilerFlags#A-fcf-protection -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1863260

[Bug 1863260] Re: gcc-9 in Ubuntu generate unbootable xen hypervisor

2020-03-03 Thread Stefan Bader
While modifying gcc I had the feeling that maybe -fno-cf-protection might be a valid flag, too. Should that be the same as -fcf- protection=none? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1863260

[Bug 1863260] Re: gcc-9 in Ubuntu generate unbootable xen hypervisor

2020-03-03 Thread Stefan Bader
I have re-compiled gcc-9 from Focal after adding it to the list of releases which do not enable cf-protection by default. Then compiled Xen from Focal with that compiler. And it does boot! # xen info host : argabuthon release: 5.4.0-14-generic version

[Bug 1863260] Re: gcc-9 in Ubuntu generate unbootable xen hypervisor

2020-02-28 Thread Stefan Bader
** Tags added: aeppelwoi -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1863260 Title: gcc-9 in Ubuntu generate unbootable xen hypervisor To manage notifications about this bug go to:

[Bug 1863260] Re: gcc-9 in Ubuntu generate unbootable xen hypervisor

2020-02-14 Thread Stefan Bader
** Attachment added: "Xen 4.11 Hypervisor compiled on Ubuntu" https://bugs.launchpad.net/ubuntu/+source/gcc-9/+bug/1863260/+attachment/5328175/+files/xen-hv-ubuntu.gz -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu.

[Bug 1863260] Re: gcc-9 in Ubuntu generate unbootable xen hypervisor

2020-02-14 Thread Stefan Bader
** Attachment added: "Xen 4.11 Hypervisor compiled on Debian" https://bugs.launchpad.net/ubuntu/+source/gcc-9/+bug/1863260/+attachment/5328176/+files/xen-hv-debian.gz -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu.