Re: [PATCH 5.4 21/54] s390/pci: fix CPU address in MSI for directed IRQ

2020-12-10 Thread Greg Kroah-Hartman
On Thu, Dec 10, 2020 at 05:34:08PM +0100, Niklas Schnelle wrote: > Hi Greg, > > sorry to bother you but I missed that the smp_cpu_get_cpu_address() > address used here was only added with the > commit 42d211a1ae3b77 ("s390/cpuinfo: show processor physical address") > which landed in v5.7-rc1.

Re: [PATCH 5.4 21/54] s390/pci: fix CPU address in MSI for directed IRQ

2020-12-10 Thread Niklas Schnelle
Hi Greg, sorry to bother you but I missed that the smp_cpu_get_cpu_address() address used here was only added with the commit 42d211a1ae3b77 ("s390/cpuinfo: show processor physical address") which landed in v5.7-rc1. This would therefore break if ever called (luckily it would not be called on any

[PATCH 5.4 21/54] s390/pci: fix CPU address in MSI for directed IRQ

2020-12-10 Thread Greg Kroah-Hartman
From: Alexander Gordeev commit a2bd4097b3ec242f4de4924db463a9c94530e03a upstream. The directed MSIs are delivered to CPUs whose address is written to the MSI message address. The current code assumes that a CPU logical number (as it is seen by the kernel) is also the CPU address. The above