Messages in this thread | | | Date | Tue, 6 Sep 2022 22:43:46 +0200 | From | Peter Zijlstra <> | Subject | Re: [PATCH] x86/cpu: Avoid writing MSR_IA32_TSX_CTRL when writing it is not supported |
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On Tue, Sep 06, 2022 at 10:17:43PM +0200, Hans de Goede wrote: > On an Intel Atom N2600 (and presumable other Cedar Trail models) > MSR_IA32_TSX_CTRL can be read, causing saved_msr.valid to be set for it > by msr_build_context(). > > This causes restore_processor_state() to try and restore it, but writing > this MSR is not allowed on the Intel Atom N2600 leading to:
FWIW, virt tends to do this same thing a lot. They'll allow reading random MSRs and only fail on write.
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