Re: [Xen-devel] [PATCH v4.9 1/1] jiffies: use jiffies64_to_nsecs() to fix 100% steal usage for xen vcpu hotplug

2019-03-05 Thread Dongli Zhang
Thanks to Joe Jin's reminding, this patch is applicable to mainline linux kernel, although there is no issue due to this kind of bug in mainline kernel. Therefore, can I first submit this patch to mainline kernel and then backport it to stable linux with more detailed explanation how the issue is

[PATCH v4.9 1/1] jiffies: use jiffies64_to_nsecs() to fix 100% steal usage for xen vcpu hotplug

2019-03-04 Thread Dongli Zhang
[ Not relevant upstream, therefore no upstream commit. ] To fix, use jiffies64_to_nsecs() directly instead of deriving the result according to jiffies_to_usecs(). As the return type of jiffies_to_usecs() is 'unsigned int', when the return value is more than the size of 'unsigned int', the