Hi All,
The P.A. Semi PA6T is still vulnerable.
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: 128 KiB
L1i cache: 128 KiB
Vulnerability Itlb multihit: Not affected
Vulnerability L1tf: Vulnerable
Vulnerability Mds: Not affected
Vulnerability Meltdown: Vulnerable
Vulnerability Spec store bypass: Vulnerable
Vulnerability Spectre v1: Mitigation; __user pointer sanitization
Vulnerability Spectre v2: Vulnerable
Vulnerability Srbds: Not affected
Vulnerability Tsx async abort: Not affected
Could you please check this issue?
Thanks,
Christian
On Wed, Dec 29, 2021 at 8:07 AM Christian Zigotzky
[off-list ref] wrote:
Hi All,
The P.A. Semi PA6T is still vulnerable.
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: 128 KiB
L1i cache: 128 KiB
Vulnerability Itlb multihit: Not affected
Vulnerability L1tf: Vulnerable
Vulnerability Mds: Not affected
Vulnerability Meltdown: Vulnerable
Vulnerability Spec store bypass: Vulnerable
Vulnerability Spectre v1: Mitigation; __user pointer sanitization
Vulnerability Spectre v2: Vulnerable
Vulnerability Srbds: Not affected
Vulnerability Tsx async abort: Not affected
Could you please check this issue?
I'm not sure where you are directing this inquiry, you sent it to: me
and the mailing list. So, just in case there's any expectation of a
response:
I'm not able to spend time investigating side channel exposures on
PA6T, the platform is unsupported and best-effort on spare time (of
which I don't have enough). I don't have hardware set up to test it at
the moment.
While enabling some of the powerpc shared mitigations wouldn't be a
lot of work (cache flushes, etc), I expect them to have performance
impact that needs some effort to measure/investigate.
Have you confirmed that the published exploits are reproducible on the platform?
-Olof