Re: [Qemu-devel] [PATCH 3/7] configure: add CET support

[Eric Blake]

On 3/13/19 7:40 AM, Paolo Bonzini wrote:
> CET requires object files to note which features are supported.  The linker

CET = ?

> will merge them to the set of features that are supported by all object
> files.  The compiler creates these notes when the -fcf-protection option
> is passed, but we have to blacklist some object files that only support
> a subset of the full CET feature set.  The next patches will improve the
> situation so that QEMU can be built with full protection.
> 
> Signed-off-by: Paolo Bonzini <address@hidden>
> ---
>  configure          | 27 +++++++++++++++++++++++++++
>  Makefile.target    |  3 +++
>  util/Makefile.objs |  5 +++++
>  3 files changed, 35 insertions(+)
> 

> @@ -1757,6 +1762,7 @@ disabled with --disable-FEATURE, default is enabled if 
> available:
>    lzfse           support of lzfse compression library
>                    (for reading lzfse-compressed dmg images)
>    seccomp         seccomp support
> +  cet             Control-flow Enforcement Technology

Ah. Still, might be worth mentioning in the commit body as well.

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3226
Virtualization:  qemu.org | libvirt.org

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