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SubjectRe: Regression: unable to boot after commit bd9240a18edf ("x86/apic: Add TSC_DEADLINE quirk due to errata") - Surface Pro 4 SKL
On Tue, Nov 28, 2017 at 10:08:53AM +0800, Zhang Rui wrote:
> Hi, All,
>
> My Surface Pro 4 is unable to boot after 4.12. The symptom is that
> kernel freezes during boot, and the last message in the screen is
> loading the initrd image. And I have bisected it to this commit

> +// DEADLINE_MODEL_MATCH_REV ( INTEL_FAM6_SKYLAKE_MOBILE, 0xb2),

And what microcode version do you run? Have you installed the latest
microcode package and updated your initrd to include it? My skylake is
running 0xba.

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