On Thu, Aug 26, 2021 at 09:51:54AM +0200, Jan Beulich wrote: > On 26.08.2021 03:18, Elliott Mitchell wrote: > > > What you're writing about would be looking for bugs in development > > branches. > > Very much so, in case there are issues left, or ones have got > reintroduced. That's what the primary purpose of this list is. > > If you were suspecting missing fixes in the kernel, I guess xen-devel > isn't the preferred channel anyway. Otoh the stable maintainers there > would likely want concrete commits pointed out ...
Yikes, too many things on plate and never getting back to this. With Xen 4.17 and Linux 6.1. When giving domain-0, 6-vCPUs `dmesg` shows: xen_acpi_processor: Max ACPI ID: 62 xen_acpi_processor: Uploading Xen processor PM info xen_acpi_processor: ACPI CPU0 - C-states uploaded. xen_acpi_processor: C1: ACPI HLT 1 uS xen_acpi_processor: C2: ACPI IOPORT 0x414 18 uS xen_acpi_processor: C3: ACPI IOPORT 0x415 350 uS xen_acpi_processor: ACPI CPU0 - P-states uploaded. xen_acpi_processor: *P0: 4500 MHz, 5625 mW, 0 uS xen_acpi_processor: P1: 3000 MHz, 2550 mW, 0 uS xen_acpi_processor: ACPI CPU2 - C-states uploaded. xen_acpi_processor: C1: ACPI HLT 1 uS xen_acpi_processor: C2: ACPI IOPORT 0x414 18 uS xen_acpi_processor: C3: ACPI IOPORT 0x415 350 uS xen_acpi_processor: ACPI CPU2 - P-states uploaded. xen_acpi_processor: *P0: 4500 MHz, 5625 mW, 0 uS xen_acpi_processor: P1: 3000 MHz, 2550 mW, 0 uS xen_acpi_processor: ACPI CPU4 - C-states uploaded. xen_acpi_processor: C1: ACPI HLT 1 uS xen_acpi_processor: C2: ACPI IOPORT 0x414 18 uS xen_acpi_processor: C3: ACPI IOPORT 0x415 350 uS xen_acpi_processor: ACPI CPU4 - P-states uploaded. xen_acpi_processor: *P0: 4500 MHz, 5625 mW, 0 uS xen_acpi_processor: P1: 3000 MHz, 2550 mW, 0 uS xen_acpi_processor: ACPI CPU6 - C-states uploaded. xen_acpi_processor: C1: ACPI HLT 1 uS xen_acpi_processor: C2: ACPI IOPORT 0x414 18 uS xen_acpi_processor: C3: ACPI IOPORT 0x415 350 uS xen_acpi_processor: ACPI CPU6 - P-states uploaded. xen_acpi_processor: *P0: 4500 MHz, 5625 mW, 0 uS xen_acpi_processor: P1: 3000 MHz, 2550 mW, 0 uS xen_acpi_processor: ACPI CPU8 - C-states uploaded. xen_acpi_processor: C1: ACPI HLT 1 uS xen_acpi_processor: C2: ACPI IOPORT 0x414 18 uS xen_acpi_processor: C3: ACPI IOPORT 0x415 350 uS xen_acpi_processor: ACPI CPU8 - P-states uploaded. xen_acpi_processor: *P0: 4500 MHz, 5625 mW, 0 uS xen_acpi_processor: P1: 3000 MHz, 2550 mW, 0 uS xen_acpi_processor: ACPI CPU10 - C-states uploaded. xen_acpi_processor: C1: ACPI HLT 1 uS xen_acpi_processor: C2: ACPI IOPORT 0x414 18 uS xen_acpi_processor: C3: ACPI IOPORT 0x415 350 uS xen_acpi_processor: ACPI CPU10 - P-states uploaded. xen_acpi_processor: *P0: 4500 MHz, 5625 mW, 0 uS xen_acpi_processor: P1: 3000 MHz, 2550 mW, 0 uS xen_acpi_processor: ACPI CPU0 w/ PBLK:0x0 xen_acpi_processor: ACPI CPU0 w/ PST:coord_type = 254 domain = 0 xen_acpi_processor: ACPI CPU1 w/ PBLK:0x0 xen_acpi_processor: ACPI CPU1 w/ PST:coord_type = 254 domain = 0 xen_acpi_processor: ACPI CPU2 w/ PBLK:0x0 xen_acpi_processor: ACPI CPU2 w/ PST:coord_type = 254 domain = 1 xen_acpi_processor: ACPI CPU3 w/ PBLK:0x0 xen_acpi_processor: ACPI CPU3 w/ PST:coord_type = 254 domain = 1 xen_acpi_processor: ACPI CPU4 w/ PBLK:0x0 xen_acpi_processor: ACPI CPU4 w/ PST:coord_type = 254 domain = 2 xen_acpi_processor: ACPI CPU5 w/ PBLK:0x0 xen_acpi_processor: ACPI CPU5 w/ PST:coord_type = 254 domain = 2 xen_acpi_processor: ACPI CPU6 w/ PBLK:0x0 xen_acpi_processor: ACPI CPU6 w/ PST:coord_type = 254 domain = 3 xen_acpi_processor: ACPI CPU7 w/ PBLK:0x0 xen_acpi_processor: ACPI CPU7 w/ PST:coord_type = 254 domain = 3 xen_acpi_processor: ACPI CPU8 w/ PBLK:0x0 xen_acpi_processor: ACPI CPU8 w/ PST:coord_type = 254 domain = 4 xen_acpi_processor: ACPI CPU9 w/ PBLK:0x0 xen_acpi_processor: ACPI CPU9 w/ PST:coord_type = 254 domain = 4 xen_acpi_processor: ACPI CPU10 w/ PBLK:0x0 xen_acpi_processor: ACPI CPU10 w/ PST:coord_type = 254 domain = 5 xen_acpi_processor: ACPI CPU11 w/ PBLK:0x0 xen_acpi_processor: ACPI CPU11 w/ PST:coord_type = 254 domain = 5 xen_acpi_processor: ACPI CPU12 w/ PBLK:0x0 xen_acpi_processor: ACPI CPU12 w/ PST:coord_type = 254 domain = 6 xen_acpi_processor: ACPI CPU13 w/ PBLK:0x0 xen_acpi_processor: ACPI CPU13 w/ PST:coord_type = 254 domain = 6 xen_acpi_processor: ACPI CPU14 w/ PBLK:0x0 xen_acpi_processor: ACPI CPU14 w/ PST:coord_type = 254 domain = 7 xen_acpi_processor: ACPI CPU15 w/ PBLK:0x0 xen_acpi_processor: ACPI CPU15 w/ PST:coord_type = 254 domain = 7 xen_acpi_processor: ACPI CPU16 w/ PBLK:0x0 xen_acpi_processor: ACPI CPU16 w/ PST:coord_type = 254 domain = 8 xen_acpi_processor: ACPI CPU17 w/ PBLK:0x0 xen_acpi_processor: ACPI CPU17 w/ PST:coord_type = 254 domain = 8 xen_acpi_processor: ACPI CPU18 w/ PBLK:0x0 xen_acpi_processor: ACPI CPU18 w/ PST:coord_type = 254 domain = 9 xen_acpi_processor: ACPI CPU19 w/ PBLK:0x0 xen_acpi_processor: ACPI CPU19 w/ PST:coord_type = 254 domain = 9 xen_acpi_processor: ACPI CPU20 w/ PBLK:0x0 xen_acpi_processor: ACPI CPU20 w/ PST:coord_type = 254 domain = 10 xen_acpi_processor: ACPI CPU21 w/ PBLK:0x0 xen_acpi_processor: ACPI CPU21 w/ PST:coord_type = 254 domain = 10 xen_acpi_processor: ACPI CPU22 w/ PBLK:0x0 xen_acpi_processor: ACPI CPU22 w/ PST:coord_type = 254 domain = 11 xen_acpi_processor: ACPI CPU23 w/ PBLK:0x0 xen_acpi_processor: ACPI CPU23 w/ PST:coord_type = 254 domain = 11 xen_acpi_processor: ACPI CPU24 w/ PBLK:0x0 xen_acpi_processor: ACPI CPU24 w/ PST:coord_type = 254 domain = 12 xen_acpi_processor: ACPI CPU25 w/ PBLK:0x0 xen_acpi_processor: ACPI CPU25 w/ PST:coord_type = 254 domain = 12 xen_acpi_processor: ACPI CPU26 w/ PBLK:0x0 xen_acpi_processor: ACPI CPU26 w/ PST:coord_type = 254 domain = 13 xen_acpi_processor: ACPI CPU27 w/ PBLK:0x0 xen_acpi_processor: ACPI CPU27 w/ PST:coord_type = 254 domain = 13 xen_acpi_processor: ACPI CPU28 w/ PBLK:0x0 xen_acpi_processor: ACPI CPU28 w/ PST:coord_type = 254 domain = 14 xen_acpi_processor: ACPI CPU29 w/ PBLK:0x0 xen_acpi_processor: ACPI CPU29 w/ PST:coord_type = 254 domain = 14 xen_acpi_processor: ACPI CPU30 w/ PBLK:0x0 xen_acpi_processor: ACPI CPU30 w/ PST:coord_type = 254 domain = 15 xen_acpi_processor: ACPI CPU31 w/ PBLK:0x0 xen_acpi_processor: ACPI CPU31 w/ PST:coord_type = 254 domain = 15 xen_acpi_processor: ACPI CPU1 - P-states uploaded. xen_acpi_processor: *P0: 4500 MHz, 5625 mW, 0 uS xen_acpi_processor: P1: 3000 MHz, 2550 mW, 0 uS xen_acpi_processor: ACPI CPU3 - P-states uploaded. xen_acpi_processor: *P0: 4500 MHz, 5625 mW, 0 uS xen_acpi_processor: P1: 3000 MHz, 2550 mW, 0 uS xen_acpi_processor: ACPI CPU5 - P-states uploaded. xen_acpi_processor: *P0: 4500 MHz, 5625 mW, 0 uS xen_acpi_processor: P1: 3000 MHz, 2550 mW, 0 uS xen_acpi_processor: ACPI CPU7 - P-states uploaded. xen_acpi_processor: *P0: 4500 MHz, 5625 mW, 0 uS xen_acpi_processor: P1: 3000 MHz, 2550 mW, 0 uS xen_acpi_processor: ACPI CPU9 - P-states uploaded. xen_acpi_processor: *P0: 4500 MHz, 5625 mW, 0 uS xen_acpi_processor: P1: 3000 MHz, 2550 mW, 0 uS xen_acpi_processor: ACPI CPU11 - P-states uploaded. xen_acpi_processor: *P0: 4500 MHz, 5625 mW, 0 uS xen_acpi_processor: P1: 3000 MHz, 2550 mW, 0 uS xen_acpi_processor: ACPI CPU12 - P-states uploaded. xen_acpi_processor: *P0: 4500 MHz, 5625 mW, 0 uS xen_acpi_processor: P1: 3000 MHz, 2550 mW, 0 uS xen_acpi_processor: ACPI CPU13 - P-states uploaded. xen_acpi_processor: *P0: 4500 MHz, 5625 mW, 0 uS xen_acpi_processor: P1: 3000 MHz, 2550 mW, 0 uS xen_acpi_processor: ACPI CPU14 - P-states uploaded. xen_acpi_processor: *P0: 4500 MHz, 5625 mW, 0 uS xen_acpi_processor: P1: 3000 MHz, 2550 mW, 0 uS xen_acpi_processor: ACPI CPU15 - P-states uploaded. xen_acpi_processor: *P0: 4500 MHz, 5625 mW, 0 uS xen_acpi_processor: P1: 3000 MHz, 2550 mW, 0 uS xen_acpi_processor: ACPI CPU16 - P-states uploaded. xen_acpi_processor: *P0: 4500 MHz, 5625 mW, 0 uS xen_acpi_processor: P1: 3000 MHz, 2550 mW, 0 uS xen_acpi_processor: ACPI CPU17 - P-states uploaded. xen_acpi_processor: *P0: 4500 MHz, 5625 mW, 0 uS xen_acpi_processor: P1: 3000 MHz, 2550 mW, 0 uS xen_acpi_processor: ACPI CPU18 - P-states uploaded. xen_acpi_processor: *P0: 4500 MHz, 5625 mW, 0 uS xen_acpi_processor: P1: 3000 MHz, 2550 mW, 0 uS xen_acpi_processor: ACPI CPU19 - P-states uploaded. xen_acpi_processor: *P0: 4500 MHz, 5625 mW, 0 uS xen_acpi_processor: P1: 3000 MHz, 2550 mW, 0 uS xen_acpi_processor: ACPI CPU20 - P-states uploaded. xen_acpi_processor: *P0: 4500 MHz, 5625 mW, 0 uS xen_acpi_processor: P1: 3000 MHz, 2550 mW, 0 uS xen_acpi_processor: ACPI CPU21 - P-states uploaded. xen_acpi_processor: *P0: 4500 MHz, 5625 mW, 0 uS xen_acpi_processor: P1: 3000 MHz, 2550 mW, 0 uS xen_acpi_processor: ACPI CPU22 - P-states uploaded. xen_acpi_processor: *P0: 4500 MHz, 5625 mW, 0 uS xen_acpi_processor: P1: 3000 MHz, 2550 mW, 0 uS xen_acpi_processor: ACPI CPU23 - P-states uploaded. xen_acpi_processor: *P0: 4500 MHz, 5625 mW, 0 uS xen_acpi_processor: P1: 3000 MHz, 2550 mW, 0 uS xen_acpi_processor: ACPI CPU24 - P-states uploaded. xen_acpi_processor: *P0: 4500 MHz, 5625 mW, 0 uS xen_acpi_processor: P1: 3000 MHz, 2550 mW, 0 uS xen_acpi_processor: ACPI CPU25 - P-states uploaded. xen_acpi_processor: *P0: 4500 MHz, 5625 mW, 0 uS xen_acpi_processor: P1: 3000 MHz, 2550 mW, 0 uS xen_acpi_processor: ACPI CPU26 - P-states uploaded. xen_acpi_processor: *P0: 4500 MHz, 5625 mW, 0 uS xen_acpi_processor: P1: 3000 MHz, 2550 mW, 0 uS xen_acpi_processor: ACPI CPU27 - P-states uploaded. xen_acpi_processor: *P0: 4500 MHz, 5625 mW, 0 uS xen_acpi_processor: P1: 3000 MHz, 2550 mW, 0 uS xen_acpi_processor: ACPI CPU28 - P-states uploaded. xen_acpi_processor: *P0: 4500 MHz, 5625 mW, 0 uS xen_acpi_processor: P1: 3000 MHz, 2550 mW, 0 uS xen_acpi_processor: ACPI CPU29 - P-states uploaded. xen_acpi_processor: *P0: 4500 MHz, 5625 mW, 0 uS xen_acpi_processor: P1: 3000 MHz, 2550 mW, 0 uS xen_acpi_processor: ACPI CPU30 - P-states uploaded. xen_acpi_processor: *P0: 4500 MHz, 5625 mW, 0 uS xen_acpi_processor: P1: 3000 MHz, 2550 mW, 0 uS xen_acpi_processor: ACPI CPU31 - P-states uploaded. xen_acpi_processor: *P0: 4500 MHz, 5625 mW, 0 uS xen_acpi_processor: P1: 3000 MHz, 2550 mW, 0 uS While Linux's `xen_acpi_processor.ko` module is part of the Linux kernel, the Xen project should be concerned with this. This matches with what `xenpm get-cpuidle-states`/`xenpm get-cpufreq-states` seem to indicate. P-state information is being uploaded to Xen for every core. C-state information is only being uploaded to Xen for cores which domain-0 has a corresponding vCPU. There is a simple mitigation, but I would certainly prefer a proper solution. -- (\___(\___(\______ --=> 8-) EHM <=-- ______/)___/)___/) \BS ( | ehem+sig...@m5p.com PGP 87145445 | ) / \_CS\ | _____ -O #include <stddisclaimer.h> O- _____ | / _/ 8A19\___\_|_/58D2 7E3D DDF4 7BA6 <-PGP-> 41D1 B375 37D0 8714\_|_/___/5445
