Thanks Lachlan,
So the key to having IBRS/IBPB is a retpolite aware compiler...
>> * Kernel compiled with a retpoline-aware compiler: NO (kernel reports
>> minimal retpoline compilation)
What a mess this whole thing is (preaching to the choir I'm sure) - it's turned
my head inside out
On 31 Jan. 2018 10:35 am, "Sam McLeod" wrote:
Hi Trevor,
I didn't think that to compile a kernel with IBRS/IBPB your *compiler* had
to be updated as well?
I thought that was a seperate issue but perhaps I'm mistaken.
Yes, it does require a newer compiler...you can
Hi Trevor,
I didn't think that to compile a kernel with IBRS/IBPB your compiler had to be
updated as well?
I thought that was a seperate issue but perhaps I'm mistaken.
--
Sam McLeod
https://smcleod.net
https://twitter.com/s_mcleod
> On 31 Jan 2018, at 12:22 am, Trevor Hemsley
Sam
I'm not ELRepo but I don't think they can do that until/unless RH fix
the compilers in the distro to be retpoline aware. If they do.
And, in any case, Intel have pretty much said "don't use the new
microcode" so there is no working microcode available that the kernel
can use anyway. All the