On Wed, Sep 29, 2021 at 06:11:07AM -0700, Jakub Kicinski wrote: > On Thu, 16 Sep 2021 19:46:48 -0700 Jakub Kicinski wrote: > > My Lenovo T490s with i7-8665U had been marking TSC as unstable > > since v5.13, resulting in very sluggish desktop experience... > > Where do we stand? Waiting for tglx to refactor PC10 detection and use > that, or just review delay? >From my point of view, this is an x86 issue, not a PCI one, so I'll defer to the x86 folks. > > +++ b/arch/x86/kernel/early-quirks.c > > @@ -716,6 +716,8 @@ static struct chipset early_qrk[] __initdata = { > > PCI_CLASS_BRIDGE_HOST, PCI_ANY_ID, 0, force_disable_hpet}, > > { PCI_VENDOR_ID_INTEL, 0x3e20, > > PCI_CLASS_BRIDGE_HOST, PCI_ANY_ID, 0, force_disable_hpet}, > > + { PCI_VENDOR_ID_INTEL, 0x3e34, > > + PCI_CLASS_BRIDGE_HOST, PCI_ANY_ID, 0, force_disable_hpet}, > > { PCI_VENDOR_ID_INTEL, 0x3ec4, > > PCI_CLASS_BRIDGE_HOST, PCI_ANY_ID, 0, force_disable_hpet}, > > { PCI_VENDOR_ID_INTEL, 0x8a12, >