Re: [Xen-devel] Dom0 kernel 4.14 with SMP randomly crashing

[Rishi <2rushikeshj@xxxxxxxxx>]

Found the references of these in https://lists.xenproject.org/archives/html/xen-devel/2017-02/msg03120.html proposal to split PV, PVHVM and PVH code in kernel.

There is no mention of any change or requirement from Xen perspective. Any other way to track this problem?

On Sun, Nov 4, 2018 at 6:37 PM Rishi <2rushikeshj@xxxxxxxxx> wrote:

I've built a dom0 kernel 4.14 with SMP support. The dom0 kernel crashes when I'm downloading a large file on host. It does not crash if I have nosmp boot option on xen command line.

my .config SMP options are

[root@f6029920339a wip-kernel-4.14.78]# grep SMP .config

CONFIG_X86_64_SMP=y

CONFIG_GENERIC_SMP_IDLE_THREAD=y

CONFIG_SMP=y

CONFIG_XEN_PV_SMP=y

CONFIG_XEN_PVHVM_SMP=y

# CONFIG_MAXSMP is not set

CONFIG_PM_SLEEP_SMP=y

CONFIG_SCSI_SAS_HOST_SMP=y

While comparing it to earlier kernels the options 

CONFIG_XEN_PV_SMP=y

CONFIG_XEN_PVHVM_SMP=y

are newly introduced. Does xen need any update to better handle them?

My xen versions is : 4.7.6

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