On Mon, Jan 08, 2018 at 04:09:12PM -0600, Tom Lendacky wrote:
> To aid in speculation control, the LFENCE instruction will be turned into
> a serializing instruction. There is less performance impact using LFENCE
> in this way compared to MFENCE.
>
> With LFENCE now being a serializing instruction
On Mon, Jan 8, 2018 at 2:09 PM, Tom Lendacky wrote:
> To aid in speculation control, the LFENCE instruction will be turned into
> a serializing instruction. There is less performance impact using LFENCE
> in this way compared to MFENCE.
>
> With LFENCE now being a serializing instruction, it can b
To aid in speculation control, the LFENCE instruction will be turned into
a serializing instruction. There is less performance impact using LFENCE
in this way compared to MFENCE.
With LFENCE now being a serializing instruction, it can be also used in
rdtsc_ordered() in preference to MFENCE_RDTSC.
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