Re: [PATCH] x86/tsc: Use rdtsc_ordered() when RDTSCP or LFENCE_RDTSC are supported

[Thomas Gleixner]

On Thu, Aug 22 2024 at 23:25, Mario Limonciello wrote:

Why is this hidden in a reply to the middle of a PCI patch series?

Sigh.

> From: Mario Limonciello <mario.limonciello@xxxxxxx>
>
> On AMD processors the TSC has been reported drifting on and off for
> various platforms.  This has been root caused to becaused by out of order
> TSC and HPET counter values.  When the SoC supports RDTSCP or LFENCE_RDTSC
> use ordered tsc reads instead.

This really wants a fixes tag.