Re: [PATCH] powerpc/pseries: Don't enforce MSI affinity with kdump

2021-02-12 Thread kernel test robot
Hi Greg, Thank you for the patch! Yet something to improve: [auto build test ERROR on powerpc/next] [also build test ERROR on linus/master v5.11-rc7 next-20210211] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as docu

Re: [PATCH] powerpc/pseries: Don't enforce MSI affinity with kdump

2021-02-12 Thread Cédric Le Goater
On 2/12/21 5:41 PM, Greg Kurz wrote: > Depending on the number of online CPUs in the original kernel, it is > likely for CPU #0 to be offline in a kdump kernel. The associated IRQs > in the affinity mappings provided by irq_create_affinity_masks() are > thus not started by irq_startup(), as per-des

Re: [PATCH] powerpc/pseries: Don't enforce MSI affinity with kdump

2021-02-12 Thread Laurent Vivier
On 12/02/2021 17:41, Greg Kurz wrote: > Depending on the number of online CPUs in the original kernel, it is > likely for CPU #0 to be offline in a kdump kernel. The associated IRQs > in the affinity mappings provided by irq_create_affinity_masks() are > thus not started by irq_startup(), as per-de

[PATCH] powerpc/pseries: Don't enforce MSI affinity with kdump

2021-02-12 Thread Greg Kurz
Depending on the number of online CPUs in the original kernel, it is likely for CPU #0 to be offline in a kdump kernel. The associated IRQs in the affinity mappings provided by irq_create_affinity_masks() are thus not started by irq_startup(), as per-design with managed IRQs. This can be a problem