Results 1 to 5 of 5

Thread: Researchers reveal SPOILER Intel CPU vulnerability

  1. #1
    HEXUS.admin
    Join Date
    Apr 2005
    Posts
    28,217
    Thanks
    0
    Thanked
    1,845 times in 628 posts

    Researchers reveal SPOILER Intel CPU vulnerability

    Similar to Spectre flaws but this leakage stems from the Memory Order Buffer.
    Read more.

  2. #2
    Senior Member
    Join Date
    May 2014
    Posts
    1,116
    Thanks
    71
    Thanked
    155 times in 105 posts

    Re: Researchers reveal SPOILER Intel CPU vulnerability

    I feel that Intels official comment is "developers of software should mitigate the problem, why should we?"

  3. #3
    Senior Member
    Join Date
    Jun 2013
    Location
    MOMBASA
    Posts
    857
    Thanks
    1
    Thanked
    22 times in 20 posts

    Re: Researchers reveal SPOILER Intel CPU vulnerability

    is this true? "intel X86 processors are bloated with old instruction sets unlike AMD who delete unused instruction sets and so holes are frequently covered."

  4. #4
    Member
    Join Date
    Jul 2016
    Location
    My happy place
    Posts
    167
    Thanks
    55
    Thanked
    13 times in 11 posts
    • afiretruck's system
      • Motherboard:
      • Gigabyte X399 Designare Ex
      • CPU:
      • AMD Threadripper 1900X
      • Memory:
      • Corsair 32GB 3200MHz
      • Storage:
      • Lots of SSDs in various RAID configurations.
      • Graphics card(s):
      • RX Vega 64
      • PSU:
      • Corsair RMi 850
      • Case:
      • Thermaltake Core X9
      • Operating System:
      • Linux Mint 19
      • Monitor(s):
      • 4k something-or-other.

    Re: Researchers reveal SPOILER Intel CPU vulnerability

    Quote Originally Posted by lumireleon View Post
    is this true? "intel X86 processors are bloated with old instruction sets unlike AMD who delete unused instruction sets and so holes are frequently covered."
    No (or not entirely). One of the main points of the x86 architecture is backward compatibility with old software, so deleting instructions because they're old makes no sense in this part. What would happen is that the CPU would simply emulate the old instructions on the new silicone, instead of retaining the silicone originally designed for those old instructions. They may be a little slower, but who cares if they were slow to begin with? I still see people using the old FPU-style floating point instructions.

    Saying that, I recall that Intel has announced the removal of some really old, barely used instructions recently, and that was a big announcement (as it could break old software).

    The lack of recent security vulnerabilities on AMD CPUs is much more likely to be a result of AMD having a better design philosophy, instead of trying to squeeze every last bit of performance out of the silicone at any cost like Intel.

  5. #5
    Member
    Join Date
    Sep 2014
    Posts
    167
    Thanks
    0
    Thanked
    6 times in 6 posts

    Re: Researchers reveal SPOILER Intel CPU vulnerability

    Quote Originally Posted by afiretruck View Post
    Quote Originally Posted by lumireleon View Post
    is this true? "intel X86 processors are bloated with old instruction sets unlike AMD who delete unused instruction sets and so holes are frequently covered."
    No (or not entirely). One of the main points of the x86 architecture is backward compatibility with old software, so deleting instructions because they're old makes no sense in this part. What would happen is that the CPU would simply emulate the old instructions on the new silicone, instead of retaining the silicone originally designed for those old instructions. They may be a little slower, but who cares if they were slow to begin with? I still see people using the old FPU-style floating point instructions.

    Saying that, I recall that Intel has announced the removal of some really old, barely used instructions recently, and that was a big announcement (as it could break old software).

    The lack of recent security vulnerabilities on AMD CPUs is much more likely to be a result of AMD having a better design philosophy, instead of trying to squeeze every last bit of performance out of the silicone at any cost like Intel.
    Not quite, the intell is/was keeping instruction that are/were almost not used and are intell specific. Instructions like that in AMD processors (AMD specific that was not used widely) were usually removed after few iterations.
    So the statement is rather true.
    Apart from that both are having lots of undocumented instructions that may affect security.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •