On Wed, Dec 29, 2021 at 8:07 AM Christian Zigotzky <chzigot...@xenosoft.de> 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
