On 04/02/18 21:15, David Ranch wrote:
Hello Everyone,
I have a question about this statement:
Kernel-ml has the retpoline patches but at present RHEL does not have
a retpoline-aware compiler. The upstream kernel code (kernel.org) does
not currently contain the IBRS patches that Red Hat have incorporated
into the distro kernel.
Once a retpoline enabled compiler is available, will ONLY the kernel
need to be rebuilt with it or will *ALL* packages need to be recompiled
as well (from the Centos community, 3rd party packages, etc)?
You would need to address that question to the providers of those
packages, but I have not seen any mention of anything other than
recompiling the kernel.
I note SUSE have recently announced they have backported retpoline
patches to gcc-4.8 which is of the same vintage as that used in RHEL7,
so it appears feasible if that is a path Red Hat wish to take:
https://news.opensuse.org/2018/01/26/opensuse-meltdown-spectre-update-26-jan-2018/
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