GrapheneOS (@GrapheneOS@grapheneos.social)
grapheneos.social
We have a partial port of GrapheneOS to the Pixel 11 series after a week of work on it. We're unable to complete the port due to lack of support for ARM hardware memory tagging in software, firmware and near certainly hardware. It appears Google cut an important security feature to save money.

If GrapheneOS stops supporting future Pixels, and Motorola is only targeting the flagship market for their compatible phones, we’re looking at truly dark days ahead.

  • grue@lemmy.world
    2·
    17 hours ago

    cat /proc/cpuinfo gives me a bunch of copies of this (one per CPU core):

    $ cat /proc/cpuinfo
processor       : 0                                                             
BogoMIPS        : 49.15                                                         
Features        : fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdh
p cpuid asimdrdm jscvt fcma lrcpc dcpop sha3 sm3 sm4 asimddp sha512 sve asimdfhm
 dit uscat ilrcpc flagm sb paca pacg dcpodp sve2 sveaes svepmull svebitperm sves
ha3 svesm4 flagm2 frint svei8mm svebf16 i8mm bti mte mte3                       
CPU implementer : 0x41                                                          
CPU architecture: 8                                                             
CPU variant     : 0x1                                                         
CPU part        : 0xd46                                                         
CPU revision    : 1

    Not sure how “MTE3” relates to “EMTE”…

    • TrollAccount69@lemmy.ml
      2·
      9 minutes ago

      Feat_mte4 is emte. You just have normal mte (it’s not just normal mte, mte3 means you also have mte2 and can do I think four different kinds of tagged memory management. It’s really powerful but it isn’t emte).

      E: I just wanna toot my own horn here and congratulate me on correctly remembering details from someone else’s work while posting on the toilet. Not today cognitive decline, not today.