Have a 6.1 amd64 MP system running the generic MP kernel from the installation. MP was automatically chosen by the installer - this is an Intel Atom 330 dual core box.
Ran syspatch today which installed 4 new patches: $ syspatch -l 001_dhcpd 002_vmmfpu 003_libressl 004_softraid_concat One issue is, after installing patches with syspatch and rebooting I'm now running the SP kernel instead of MP: $ uname -a OpenBSD server.localdomain 6.1 GENERIC#4 amd64 $ sysctl hw.ncpu hw.ncpu=1 After the default installation - hw.ncpu was 2 and I was running the MP kernel. Looking at rollback files in /var/syspatch (see below), it looks like 2 patches updated the kernel - 002_vmmfpu and 004_softraid_concat. Interestingly 002_vmmfpu only seems to have updated /bsd (not /bsd.mp), but 004_softraid_concat updated both. So I *think* if I moved /bsd.mp to /bsd manually I would have a fully patched MP kernel - since presumably the 004 kernel includes the 002 patch. Have not tried this yet. This manual step seems like a bug. Would imagine more people have MP machines than SP these days. /var/syspatch$ tar ztvf ./61-002_vmmfpu/rollback.tgz -rw-r--r-- 1 root wheel 10751939 Apr 22 05:26 ./bsd -r--r--r-- 1 root bin 7321 Sep 4 2016 ./usr/include/amd64/cpufunc.h -r--r--r-- 1 root bin 1832 Mar 26 2015 ./usr/include/amd64/fpu.h -r--r--r-- 1 root bin 20593 Mar 23 12:58 ./usr/include/amd64/vmmvar.h -r--r--r-- 1 root bin 7321 Sep 4 2016 ./usr/include/machine/cpufunc.h -r--r--r-- 1 root bin 1832 Mar 26 2015 ./usr/include/machine/fpu.h -r--r--r-- 1 root bin 20593 Mar 23 12:58 ./usr/include/machine/vmmvar.h /var/syspatch$ tar ztvf ./61-004_softraid_concat/rollback.tgz -rw-r--r-- 1 root wheel 10684150 May 2 19:34 ./bsd -rw-r--r-- 1 root wheel 10756231 May 2 19:34 ./bsd.mp $ ls -latrh /bsd* -rw-r--r-- 1 root wheel 10.2M Apr 22 05:26 /bsd.sp -rw-r--r-- 1 root wheel 9.0M Apr 22 05:26 /bsd.rd -rw-r--r-- 1 root wheel 10.2M May 2 19:35 /bsd -rw-r--r-- 1 root wheel 10.3M May 2 19:35 /bsd.mp
