1. 04 Oct, 2010 1 commit
    • Borislav Petkov's avatar
      x86, cpu: Fix X86_FEATURE_NOPL · 366d4a43
      Borislav Petkov authored
      ba0593bf cleared the aforementioned
      cpuid bit only on 32-bit due to various problems with Virtual PC. This
      somehow got lost during the 32- + 64-bit merge so restore the feature
      bit on 64-bit. For that, set it explicitly for non-constant arguments of
      cpu_has(). Update comment for future reference.
      Signed-off-by: default avatarBorislav Petkov <bp@alien8.de>
      LKML-Reference: <20101004073127.GA20305@liondog.tnic>
      Cc: Ryan O'Neill <ryan@innosecc.com>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Signed-off-by: default avatarH. Peter Anvin <hpa@linux.intel.com>
      366d4a43
  2. 21 Sep, 2010 1 commit
  3. 08 Sep, 2010 4 commits
  4. 05 Sep, 2010 1 commit
  5. 25 Aug, 2010 1 commit
    • Borislav Petkov's avatar
      x86, tsc: Remove CPU frequency calibration on AMD · acf01734
      Borislav Petkov authored
      6b37f5a2 introduced the CPU frequency
      calibration code for AMD CPUs whose TSCs didn't increment with the
      core's P0 frequency. From F10h, revB onward, however, the TSC increment
      rate is denoted by MSRC001_0015[24] and when this bit is set (which
      should be done by the BIOS) the TSC increments with the P0 frequency
      so the calibration is not needed and booting can be a couple of mcecs
      faster on those machines.
      
      Besides, there should be virtually no machines out there which don't
      have this bit set, therefore this calibration can be safely removed. It
      is a shaky hack anyway since it assumes implicitly that the core is in
      P0 when BIOS hands off to the OS, which might not always be the case.
      Signed-off-by: default avatarBorislav Petkov <borislav.petkov@amd.com>
      LKML-Reference: <20100825162823.GE26438@aftab>
      Signed-off-by: default avatarH. Peter Anvin <hpa@linux.intel.com>
      acf01734
  6. 23 Aug, 2010 1 commit
  7. 22 Aug, 2010 12 commits
  8. 21 Aug, 2010 6 commits
  9. 20 Aug, 2010 13 commits