Re: [PATCH v2] Drivers: HV: Send one page worth of kmsg dump over Hyper-V during panic

On Fri, May 18, 2018 at 07:09:10PM +, Sunil Muthuswamy wrote: > In the VM mode on Hyper-V, currently, when the kernel panics, an error > code and few register values are populated in an MSR and the Hypervisor > notified. This information is collected on the host. The amount of > information

Re: [PATCH v2] Drivers: HV: Send one page worth of kmsg dump over Hyper-V during panic

On Fri, May 18, 2018 at 07:09:10PM +, Sunil Muthuswamy wrote: > In the VM mode on Hyper-V, currently, when the kernel panics, an error > code and few register values are populated in an MSR and the Hypervisor > notified. This information is collected on the host. The amount of > information

Re: [PATCH v2] Drivers: HV: Send one page worth of kmsg dump over Hyper-V during panic

On Fri, 18 May 2018 19:09:10 + Sunil Muthuswamy wrote: > > +/* > + * Boolean to control whether to report panic messages over Hyper-V. > + * > + * It can be set via /proc/sys/kernel/hyperv/record_panic_msg > + */ > +int sysctl_record_panic_msg = 1; > + Looks good,

[PATCH v2] Drivers: HV: Send one page worth of kmsg dump over Hyper-V during panic

In the VM mode on Hyper-V, currently, when the kernel panics, an error code and few register values are populated in an MSR and the Hypervisor notified. This information is collected on the host. The amount of information currently collected is found to be limited and not very actionable. To