New kernels

[xeno74]

alpha8 of kernel 7.2 works on X1000, but L2 caches are disabled for some reason

Strange with the L2 caches. The kernel developers have modified the output of lscpu two weeks ago.

Simplify cpumask api usage for cpuinfo display

Thank you for testing!

[sailorMH]

Strange with the L2 caches. The kernel developers have modified the output of lscpu two weeks ago.

Simplify cpumask api usage for cpuinfo display

Thank you for testing!

It was not only in cpuinfo, L2 mising also in /sys/devices/system/cpu/...
I will measure with RAMSpeed after I will return from vacations.

[xeno74]

Hi All,

Here is the alpha9 of kernel 7.2 with the latest PCI updates for PowerPC machines.

Download and further information: github.com

Testing of the alpha9 with the new Debian Sid PPC64 on the X1000:



Have a nice weekend,

Christian

[xeno74]

New for the RC1 of kernel 7.2:

• Linux 7.2-rc1 Released: "Things Look Reasonably Normal" While Landing AMDGPU HDMI 2.1 FRL, AMD ISP4 & CAS -- phoronix.com
• 7.2-rc1 announcement
• Linux 7.2 Fixes Where PCIe Devices Could Be Inadvertently Restricted To 2.5 GT/s -- phoronix.com
• Linux 7.2 Surpasses More Than 43 Million Lines In The Kernel Tree -- phoronix.com
• Sound fixes (including HD-audio, USB-audio and EMU10K1 Sound Blaster fixes)
• DRM fixes
• Networking fixes (including E1000, E1000e and VirtIO_net fixes)
• Block fixes (including NVMe fixes)
• FBdev updates
• Linux Git log
• Phoronix articles, reviews and news stories covering Linux 7.2

[xeno74]

Hi All,

The merge window is over. Linus Torvalds has released the RC1 of kernel 7.2 for testing.

I compiled it for X1000 and e5500 machines (X5000/20, X5000/40, Mirari, and QEMU VMs) today.

Download and further information: github.com



Please test the kernels.

Thanks,
Christian

[Hypex]

Hello.

So I've been testing the alphas in the background. So far it's been a good series with each kernel running well. I did read the discussion about the L2 caches so will monitor this also and check if I also have this issue.

[xeno74]

FYI:

[PATCH] Connecting the SB600's i8259 controller rather in pasemi's pci.c than in pasemi's setup.c. -- linuxppc-dev

[PATCH] Connecting the SB600's i8259 controller rather in pasemi's pci.c than in pasemi's setup.c. --lore.kernel.org

[Hypex]

Strange with the L2 caches. The kernel developers have modified the output of lscpu two weeks ago.

This is my result from MATE remix and alpha 8:

Code: Select all

amigaone@ubuntu:~$ lscpu
Architecture:          ppc64
CPU op-mode(s):        32-bit, 64-bit
Byte Order:            Big Endian
CPU(s):                2
On-line CPU(s) list:   0,1
Thread(s) per core:    1
Core(s) per socket:    2
Socket(s):             1
Model:                 1.2 (pvr 0090 0102)
Model name:            PA6T, altivec supported
L1d cache:             64K
L1i cache:             64K

[xeno74]

alpha8 of kernel 7.2 works on X1000, but L2 caches are disabled for some reason

Have you a lscpu output with L2 caches? I found some old lscpu outputs in this forum but always without L2 caches.

Here are my outputs. Created with some kernels (7.2.0-rc1, 7.1.0-final, 7.0.6, 6.12.90, and 5.10.259):

Code: Select all

[amigaone@void-ppc ~]$ cat /proc/version 
Linux version 7.2.0-rc1-powerpc64-smp (amigaone@linux-ppc-cross-compile-buildhost) (powerpc-linux-gnu-gcc (Debian 9.3.0-22) 9.3.0, GNU ld (GNU Binutils for Debian) 2.44) #1 SMP Mon Jun 29 06:51:09 CEST 2026
[amigaone@void-ppc ~]$ lscpu
Architecture:                ppc64
  CPU op-mode(s):            32-bit, 64-bit
  Byte Order:                Big Endian
CPU(s):                      2
  On-line CPU(s) list:       0,1
Model name:                  PA6T, altivec supported
  Model:                     1.2 (pvr 0090 0102)
  Thread(s) per core:        1
  Core(s) per socket:        2
  Socket(s):                 1
Caches (sum of all):         
  L1d:                       128 KiB (2 instances)
  L1i:                       128 KiB (2 instances)
Vulnerabilities:             
  Gather data sampling:      Not affected
  Ghostwrite:                Not affected
  Indirect target selection: Not affected
  Itlb multihit:             Not affected
  L1tf:                      Vulnerable
  Mds:                       Not affected
  Meltdown:                  Vulnerable
  Mmio stale data:           Not affected
  Old microcode:             Not affected
  Reg file data sampling:    Not affected
  Retbleed:                  Not affected
  Spec rstack overflow:      Not affected
  Spec store bypass:         Vulnerable
  Spectre v1:                Mitigation; __user pointer sanitization
  Spectre v2:                Vulnerable
  Srbds:                     Not affected
  Tsa:                       Not affected
  Tsx async abort:           Not affected
  Vmscape:                   Not affected

---

[amigaone@void-ppc ~]$ cat /proc/version 
Linux version 7.1.0-powerpc64-smp (amigaone@ppc-cross-compile) (powerpc-linux-gnu-gcc (Debian 9.3.0-22) 9.3.0, GNU ld (GNU Binutils for Debian) 2.44) #1 SMP Mon Jun 15 14:14:04 CEST 2026
[amigaone@void-ppc ~]$ lscpu
Architecture:                ppc64
  CPU op-mode(s):            32-bit, 64-bit
  Byte Order:                Big Endian
CPU(s):                      2
  On-line CPU(s) list:       0,1
Model name:                  PA6T, altivec supported
  Model:                     1.2 (pvr 0090 0102)
  Thread(s) per core:        1
  Core(s) per socket:        2
  Socket(s):                 1
Caches (sum of all):         
  L1d:                       128 KiB (2 instances)
  L1i:                       128 KiB (2 instances)
Vulnerabilities:             
  Gather data sampling:      Not affected
  Ghostwrite:                Not affected
  Indirect target selection: Not affected
  Itlb multihit:             Not affected
  L1tf:                      Vulnerable
  Mds:                       Not affected
  Meltdown:                  Vulnerable
  Mmio stale data:           Not affected
  Old microcode:             Not affected
  Reg file data sampling:    Not affected
  Retbleed:                  Not affected
  Spec rstack overflow:      Not affected
  Spec store bypass:         Vulnerable
  Spectre v1:                Mitigation; __user pointer sanitization
  Spectre v2:                Vulnerable
  Srbds:                     Not affected
  Tsa:                       Not affected
  Tsx async abort:           Not affected
  Vmscape:                   Not affected

---

[amigaone@void-ppc ~]$ cat /proc/version
Linux version 7.0.6-powerpc64-smp (amigaone@buildhost) (powerpc-linux-gnu-gcc (Debian 9.3.0-22) 9.3.0, GNU ld (GNU Binutils for Debian) 2.44) #1 SMP Wed May 13 14:24:51 CEST 2026
[amigaone@void-ppc ~]$ lscpu
Architecture:                ppc64
  CPU op-mode(s):            32-bit, 64-bit
  Byte Order:                Big Endian
CPU(s):                      2
  On-line CPU(s) list:       0,1
Model name:                  PA6T, altivec supported
  Model:                     1.2 (pvr 0090 0102)
  Thread(s) per core:        1
  Core(s) per socket:        2
  Socket(s):                 1
Caches (sum of all):         
  L1d:                       128 KiB (2 instances)
  L1i:                       128 KiB (2 instances)
Vulnerabilities:             
  Gather data sampling:      Not affected
  Ghostwrite:                Not affected
  Indirect target selection: Not affected
  Itlb multihit:             Not affected
  L1tf:                      Vulnerable
  Mds:                       Not affected
  Meltdown:                  Vulnerable
  Mmio stale data:           Not affected
  Old microcode:             Not affected
  Reg file data sampling:    Not affected
  Retbleed:                  Not affected
  Spec rstack overflow:      Not affected
  Spec store bypass:         Vulnerable
  Spectre v1:                Mitigation; __user pointer sanitization
  Spectre v2:                Vulnerable
  Srbds:                     Not affected
  Tsa:                       Not affected
  Tsx async abort:           Not affected
  Vmscape:                   Not affected

---

[amigaone@void-ppc ~]$ cat /proc/version
Linux version 6.12.90-powerpc64-smp (amigaone@debian-buildhost) (powerpc-linux-gnu-gcc (Debian 9.3.0-22) 9.3.0, GNU ld (GNU Binutils for Debian) 2.44) #1 SMP Wed May 20 06:25:39 CEST 2026
[amigaone@void-ppc ~]$ lscpu
Architecture:                ppc64
  CPU op-mode(s):            32-bit, 64-bit
  Byte Order:                Big Endian
CPU(s):                      2
  On-line CPU(s) list:       0,1
Model name:                  PA6T, altivec supported
  Model:                     1.2 (pvr 0090 0102)
  Thread(s) per core:        1
  Core(s) per socket:        2
  Socket(s):                 1
Caches (sum of all):         
  L1d:                       128 KiB (2 instances)
  L1i:                       128 KiB (2 instances)
Vulnerabilities:             
  Gather data sampling:      Not affected
  Indirect target selection: Not affected
  Itlb multihit:             Not affected
  L1tf:                      Vulnerable
  Mds:                       Not affected
  Meltdown:                  Vulnerable
  Mmio stale data:           Not affected
  Reg file data sampling:    Not affected
  Retbleed:                  Not affected
  Spec rstack overflow:      Not affected
  Spec store bypass:         Vulnerable
  Spectre v1:                Mitigation; __user pointer sanitization
  Spectre v2:                Vulnerable
  Srbds:                     Not affected
  Tsa:                       Not affected
  Tsx async abort:           Not affected
  Vmscape:                   Not affected

---

[amigaone@void-ppc ~]$ cat /proc/version
Linux version 5.10.259-powerpc64-smp (amigaone@buildhost) (powerpc-linux-gnu-gcc (Debian 9.3.0-22) 9.3.0, GNU ld (GNU Binutils for Debian) 2.44) #2 SMP Thu Jul 2 14:00:29 CEST 2026
[amigaone@void-ppc ~]$ lscpu
Architecture:                ppc64
  CPU op-mode(s):            32-bit, 64-bit
  Byte Order:                Big Endian
CPU(s):                      2
  On-line CPU(s) list:       0,1
Model name:                  PA6T, altivec supported
  Model:                     1.2 (pvr 0090 0102)
  Thread(s) per core:        1
  Core(s) per socket:        2
  Socket(s):                 1
Caches (sum of all):         
  L1d:                       128 KiB (2 instances)
  L1i:                       128 KiB (2 instances)
Vulnerabilities:             
  Gather data sampling:      Not affected
  Indirect target selection: Not affected
  Itlb multihit:             Not affected
  L1tf:                      Vulnerable
  Mds:                       Not affected
  Meltdown:                  Vulnerable
  Mmio stale data:           Not affected
  Reg file data sampling:    Not affected
  Retbleed:                  Not affected
  Spec rstack overflow:      Not affected
  Spec store bypass:         Vulnerable
  Spectre v1:                Mitigation; __user pointer sanitization
  Spectre v2:                Vulnerable
  Srbds:                     Not affected
  Tsa:                       Not affected
  Tsx async abort:           Not affected
  Vmscape:                   Not affected

---

bash-5.1# cat /proc/version 
Linux version 5.10.259-powerpc64-smp (amigaone@buildhost) (powerpc-linux-gnu-gcc (Debian 9.3.0-22) 9.3.0, GNU ld (GNU Binutils for Debian) 2.44) #2 SMP Thu Jul 2 14:00:29 CEST 2026
bash-5.1# lscpu --caches
NAME ONE-SIZE ALL-SIZE WAYS TYPE        LEVEL SETS PHY-LINE COHERENCY-SIZE
L1d       64K     128K  512 Data            1    2                      64
L1i       64K     128K  512 Instruction     1    2                      64

[xeno74]

Hi All,

I have released the stable long-term kernel 5.10.259 with some PowerPC fixes for X1000 and e5500 machines (X5000/20, X5000/40, Mirari, and QEMU VMs).

Download and further information: github.com

The kernel 5.10.259 with Yellow Dog Linux 6.2 PPC 32-bit:



Have a nice weekend,
Christian