Messages in this thread | | | Date | Wed, 31 May 2023 17:56:24 -0700 | From | Josh Poimboeuf <> | Subject | Re: [PATCH] KVM: VMX: remove LFENCE in vmx_spec_ctrl_restore_host() |
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On Thu, Jun 01, 2023 at 01:50:48AM +0100, Andrew Cooper wrote: > 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.
But it's only unbalanced RETs we're concerned about, per Intel.
-- Josh
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