On Tue, May 5, 2020 at 7:16 AM Thomas Gleixner <t...@linutronix.de> wrote: > > mce_check_crashing_cpu() is called right at the entry of the MCE > handler. It uses mce_rdmsr() and mce_wrmsr() which are wrappers around > rdmsr() and wrmsr() to handle the MCE error injection mechanism, which is > pointless in this context, i.e. when the MCE hits an offline CPU or the > system is already marked crashing. > > The MSR access can also be traced, so use the untraceable variants. This > is also safe vs. XEN paravirt as these MSRs are not affected by XEN PV > modifications.
Acked-by: Andy Lutomirski <l...@kernel.org>
