Re: [PATCH] KVM: VMX: remove LFENCE in vmx_spec_ctrl_restore_host()

From: Andrew Cooper
Date: Wed May 31 2023 - 20:52:10 EST

On 01/06/2023 1:42 am, Josh Poimboeuf wrote:
> So each LFENCE has a distinct purpose. That said, there are no indirect
> branches or unbalanced RETs between them.

How lucky are you feeling?

You're in C at this point, which means the compiler could have emitted a
call to mem{cpy,cmp}() in place of a simple assignment/comparison.