On 2026/03/06 09:49, Theo Buehler wrote:
> On Wed, Jan 14, 2026 at 03:47:15PM +0100, Stefan Fritsch wrote:
> 
> [...]
> 
> > > > Updated diff below that should fix all architectures. sparc64 already has 
> > > > the correct ordering. Boot tested on amd64, i386, arm64.
> > > 
> > > On arm64, the slow cores are typically (but not always) listed before
> > > the fast cores.  Don't think that is a good reason not to change the
> > > order of the list to be more sensible.
> > 
> > Does this mean that the boot cpu is then a slow core, too?
> > 
> > In the long term, one probably wants to have some field in cpu_info that
> > denotes the core type and then make intrmap_create() use that info to
> > prefer the fastest cores.
> > 
> > As noted by tb@, the previous diff broke !MULTIPROCESSOR configurations.
> > New diff attached.
> 
> Not my area. Should this be committed?

fwiw, no change in cpu order on my m2 mini.

OpenBSD 7.8-current (GENERIC.MP) #1: Fri Mar  6 16:57:19 GMT 2026
    sthen@m27:/sys/arch/arm64/compile/GENERIC.MP
real mem  = 8065933312 (7692MB)
avail mem = 7688204288 (7332MB)
random: good seed from bootblocks
mainbus0 at root: Apple Mac mini (M2, 2023)
efi0 at mainbus0: UEFI 2.10
efi0: Das U-Boot rev 0x20240100
cpu0 at mainbus0 mpidr 0: Apple Blizzard r1p0
cpu0: 128KB 64b/line 4-way L1 PIPT I-cache, 64KB 64b/line 8-way L1 D-cache
cpu0: 4096KB 128b/line 16-way L2 cache
cpu0: TLBIOS+IRANGE,TS+AXFLAG,FHM,DP,SHA3,RDM,Atomic,CRC32,SHA2+SHA512,SHA1,AES+PMULL,I8MM,BF16,SPECRES,SB,FRINTTS,GPI,LRCPC+LDAPUR,FCMA,JSCVT,API+EPAC2+FPAC,DPB+DCCVADP,ECV,SpecSEI,PAN+ATS1E1,LO,HPDS,VH,IDS,AT,CSV3,CSV2,DIT,RAS,AdvSIMD+HP,FP+HP,BT,SSBS+MSR
cpu1 at mainbus0 mpidr 1: Apple Blizzard r1p0
cpu1: 128KB 64b/line 4-way L1 PIPT I-cache, 64KB 64b/line 8-way L1 D-cache
cpu1: 4096KB 128b/line 16-way L2 cache
cpu2 at mainbus0 mpidr 2: Apple Blizzard r1p0
cpu2: 128KB 64b/line 4-way L1 PIPT I-cache, 64KB 64b/line 8-way L1 D-cache
cpu2: 4096KB 128b/line 16-way L2 cache
cpu3 at mainbus0 mpidr 3: Apple Blizzard r1p0
cpu3: 128KB 64b/line 4-way L1 PIPT I-cache, 64KB 64b/line 8-way L1 D-cache
cpu3: 4096KB 128b/line 16-way L2 cache
cpu4 at mainbus0 mpidr 10100: Apple Avalanche r1p0
cpu4: 192KB 64b/line 6-way L1 PIPT I-cache, 128KB 64b/line 8-way L1 D-cache
cpu4: 16384KB 128b/line 16-way L2 cache
cpu5 at mainbus0 mpidr 10101: Apple Avalanche r1p0
cpu5: 192KB 64b/line 6-way L1 PIPT I-cache, 128KB 64b/line 8-way L1 D-cache
cpu5: 16384KB 128b/line 16-way L2 cache
cpu6 at mainbus0 mpidr 10102: Apple Avalanche r1p0
cpu6: 192KB 64b/line 6-way L1 PIPT I-cache, 128KB 64b/line 8-way L1 D-cache
cpu6: 16384KB 128b/line 16-way L2 cache
cpu7 at mainbus0 mpidr 10103: Apple Avalanche r1p0
cpu7: 192KB 64b/line 6-way L1 PIPT I-cache, 128KB 64b/line 8-way L1 D-cache
cpu7: 16384KB 128b/line 16-way L2 cache
"framebuffer" at mainbus0 not configured
"asc-firmware" at mainbus0 not configured
"asc-firmware" at mainbus0 not configured
"asc-firmware" at mainbus0 not configured
"flash" at mainbus0 not configured
"flash" at mainbus0 not configured
"uat-handoff" at mainbus0 not configured
"uat-pagetables" at mainbus0 not configured
"uat-ttbs" at mainbus0 not configured
apm0 at mainbus0
"smbios" at mainbus0 not configured
"opp-table-0" at mainbus0 not configured
"opp-table-1" at mainbus0 not configured
"opp-table-gpu" at mainbus0 not configured
agtimer0 at mainbus0: 24000 kHz
"pmu-e" at mainbus0 not configured
"pmu-p" at mainbus0 not configured
"clock-ref" at mainbus0 not configured
"clock-ref-nco" at mainbus0 not configured
"clock-disp0" at mainbus0 not configured
"clock-dispext0" at mainbus0 not configured
"clock-200m" at mainbus0 not configured
simplebus0 at mainbus0: "soc"
aplpmgr0 at simplebus0
aplpmgr1 at simplebus0
aplmbox0 at simplebus0
apldart0 at simplebus0 rev 1.1: 36 bits, locked
aplmbox1 at simplebus0
apldart1 at simplebus0 rev 1.1: 32 bits, bypass
aplintc0 at simplebus0 nirq 1152 ndie 1
aplpinctrl0 at simplebus0
aplpinctrl1 at simplebus0
apldog0 at simplebus0
aplefuse0 at simplebus0
aplmbox2 at simplebus0
aplpinctrl2 at simplebus0
aplpinctrl3 at simplebus0
apldart2 at simplebus0 rev 1.1: 36 bits, locked
apldart3 at simplebus0 rev 1.1: 36 bits, locked
aplmbox3 at simplebus0
aplmbox4 at simplebus0
apldart4 at simplebus0 rev 1.1: 32 bits, bypass
apldart5 at simplebus0 rev 1.1: 32 bits, bypass
apldart6 at simplebus0 rev 1.1: 32 bits, bypass
apldart7 at simplebus0 rev 1.1: 32 bits, bypass
apldart8 at simplebus0 rev 1.1: 32 bits
apldart9 at simplebus0 rev 1.1: 32 bits
apldart10 at simplebus0 rev 1.1: 32 bits
"gpu" at simplebus0 not configured
aplcpu0 at simplebus0
aplcpu1 at simplebus0
apldrm0 at simplebus0
drm0 at apldrm0
apliic0 at simplebus0
iic0 at apliic0
tipd0 at iic0 addr 0x38
tipd1 at iic0 addr 0x3f
apliic1 at simplebus0
iic1 at apliic1
sncodec0 at iic1 addr 0x38
"cirrus,cs42l84" at iic1 addr 0x4b not configured
apliic2 at simplebus0
iic2 at apliic2
aplspi0 at simplebus0
exuart0 at simplebus0: console
exuart1 at simplebus0
apldma0 at simplebus0
aplmca0 at simplebus0
aplnco0 at simplebus0
"phy" at simplebus0 not configured
aplspmi0 at simplebus0
aplpmu0 at aplspmi0 sid 0xe
aplsmc0 at simplebus0
apldcp0 at simplebus0
aplsart0 at simplebus0
aplns0 at simplebus0
nvme0 at aplns0: NVMe 1.1
nvme0: APPLE SSD AP0512Z, firmware 499.0.9, serial 0ba020cba408ce42
scsibus0 at nvme0: 2 targets, initiator 0
sd0 at scsibus0 targ 1 lun 0: <NVMe, APPLE SSD AP0512, 499.>
sd0: 477102MB, 4096 bytes/sector, 122138133 sectors
xhci0 at simplebus0, xHCI 1.10
usb0 at xhci0: USB revision 3.0
uhub0 at usb0 configuration 1 interface 0 "Generic xHCI root hub" rev 3.00/1.00 addr 1
"phy" at simplebus0 not configured
xhci1 at simplebus0, xHCI 1.10
usb1 at xhci1: USB revision 3.0
uhub1 at usb1 configuration 1 interface 0 "Generic xHCI root hub" rev 3.00/1.00 addr 1
"phy" at simplebus0 not configured
aplpcie0 at simplebus0
pci0 at aplpcie0
ppb0 at pci0 dev 0 function 0 "Apple M1 PCIe" rev 0x01
pci1 at ppb0 bus 1
"Broadcom BCM4388" rev 0x04 at pci1 dev 0 function 0 not configured
vendor "Broadcom", unknown product 0x5f72 (class network subclass miscellaneous, rev 0x04) at pci1 dev 0 function 1 not configured
ppb1 at pci0 dev 1 function 0 "Apple M1 PCIe" rev 0x01
pci2 at ppb1 bus 2
xhci2 at pci2 dev 0 function 0 "ASMedia ASM2142 xHCI" rev 0x00: msix, xHCI 1.10
usb2 at xhci2: USB revision 3.0
uhub2 at usb2 configuration 1 interface 0 "ASMedia xHCI root hub" rev 3.00/1.00 addr 1
ppb2 at pci0 dev 2 function 0 "Apple M1 PCIe" rev 0x01
pci3 at ppb2 bus 3
bge0 at pci3 dev 0 function 0 "Broadcom BCM57762" rev 0x00, BCM57766 A0 (0x57766000): msi, address 5c:1b:f4:e1:50:70
brgphy0 at bge0 phy 1: BCM57765, rev. 0
aplaudio0 at mainbus0
audio0 at aplaudio0
vscsi0 at root
scsibus1 at vscsi0: 256 targets
softraid0 at root
scsibus2 at softraid0: 256 targets
root on sd0a (8164568be82d55e4.a) swap on sd0b dump on sd0b
apldrm0: 1024x768, 32bpp
wsdisplay0 at apldrm0 mux 1
wsdisplay0: screen 0-5 added (std, vt100 emulation)
"framebuffer" at mainbus0 not configured