On Wed, May 13, 2020 at 9:56 AM Andrew Cooper wrote:
>
> Xen doesn't support CET-IBT yet. At a minimum, logic is required to enable it
> for supervisor use, but the livepatch functionality needs to learn not to
> overwrite ENDBR64 instructions.
>
> Furthermore, Ubuntu enables -fcf-protection by d
On 13/05/2020 15:13, Jan Beulich wrote:
> [CAUTION - EXTERNAL EMAIL] DO NOT reply, click links, or open attachments
> unless you have verified the sender and know the content is safe.
>
> On 13.05.2020 15:55, Andrew Cooper wrote:
>> Xen doesn't support CET-IBT yet. At a minimum, logic is required
On 13.05.2020 15:55, Andrew Cooper wrote:
> Xen doesn't support CET-IBT yet. At a minimum, logic is required to enable it
> for supervisor use, but the livepatch functionality needs to learn not to
> overwrite ENDBR64 instructions.
>
> Furthermore, Ubuntu enables -fcf-protection by default, along
Xen doesn't support CET-IBT yet. At a minimum, logic is required to enable it
for supervisor use, but the livepatch functionality needs to learn not to
overwrite ENDBR64 instructions.
Furthermore, Ubuntu enables -fcf-protection by default, along with a buggy
version of GCC-9 which objects to it i
On Wed, May 13, 2020 at 7:01 AM Andrew Cooper wrote:
>
> On 13/05/2020 03:35, Jason Andryuk wrote:
> > [CAUTION - EXTERNAL EMAIL] DO NOT reply, click links, or open attachments
> > unless you have verified the sender and know the content is safe.
> >
> > On Tue, May 12, 2020 at 3:11 PM Andrew Coo
On 13/05/2020 03:35, Jason Andryuk wrote:
> [CAUTION - EXTERNAL EMAIL] DO NOT reply, click links, or open attachments
> unless you have verified the sender and know the content is safe.
>
> On Tue, May 12, 2020 at 3:11 PM Andrew Cooper
> wrote:
>> See comment for details. Works around a GCC-9 b
On 12.05.2020 21:11, Andrew Cooper wrote:
> See comment for details. Works around a GCC-9 bug which breaks the build on
> Ubuntu.
>
> Reported-by: Jason Andryuk
> Signed-off-by: Andrew Cooper
Reviewed-by: Jan Beulich
On Tue, May 12, 2020 at 3:11 PM Andrew Cooper wrote:
>
> See comment for details. Works around a GCC-9 bug which breaks the build on
> Ubuntu.
>
> Reported-by: Jason Andryuk
> Signed-off-by: Andrew Cooper
Tested-by: Jason Andryuk
Reviewed-by: Jason Andryuk
> diff --git a/xen/arch/x86/arch.m
See comment for details. Works around a GCC-9 bug which breaks the build on
Ubuntu.
Reported-by: Jason Andryuk
Signed-off-by: Andrew Cooper
---
CC: Jan Beulich
CC: Wei Liu
CC: Roger Pau Monné
CC: Jason Andryuk
CC: Stefan Bader
Sorry for messing you around with how to fix this. I'd neglec
