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  1. 10 11月, 2010 1 次提交
  3. 23 1月, 2010 1 次提交
  5. 09 12月, 2009 1 次提交
  7. 17 11月, 2009 1 次提交
  9. 10 11月, 2009 5 次提交
  11. 07 6月, 2009 1 次提交
  13. 12 5月, 2009 1 次提交
    • D
      x86: microcode: use smp_call_function_single instead of set_cpus_allowed,... · 871b72dd
      由 Dmitry Adamushko 提交于 
      x86: microcode: use smp_call_function_single instead of set_cpus_allowed, cleanup of synchronization logic

* Solve issues described in 6f66cbc6
  in a way that doesn't resort to set_cpus_allowed();

* in fact, only collect_cpu_info and apply_microcode callbacks
  must run on a target cpu, others will do just fine on any other.
  smp_call_function_single() (as suggested by Ingo) is used to run
  these callbacks on a target cpu.

* cleanup of synchronization logic of the 'microcode_core' part

  The generic 'microcode_core' part guarantees that only a single cpu
  (be it a full-fledged cpu, one of the cores or HT)
  is being updated at any particular moment of time.

  In general, there is no need for any additional sync. mechanism in
  arch-specific parts (the patch removes existing spinlocks).

  See also the "Synchronization" section in microcode_core.c.

* return -EINVAL instead of -1 (which is translated into -EPERM) in
  microcode_write(), reload_cpu() and mc_sysdev_add(). Other suggestions
  for an error code?

* use 'enum ucode_state' as return value of request_microcode_{fw, user}
  to gain more flexibility by distinguishing between real error cases
  and situations when an appropriate ucode was not found (which is not an
  error per-se).

* some minor cleanups

Thanks a lot to Hugh Dickins for review/suggestions/testing!

   Reference: http://marc.info/?l=linux-kernel&m=124025889012541&w=2

[ Impact: refactor and clean up microcode driver locking code ]
Signed-off-by: NDmitry Adamushko <dmitry.adamushko@gmail.com>
Acked-by: NHugh Dickins <hugh@veritas.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Andreas Herrmann <andreas.herrmann3@amd.com>
Cc: Peter Oruba <peter.oruba@amd.com>
Cc: Arjan van de Ven <arjan@infradead.org>
LKML-Reference: <1242078507.5560.9.camel@earth>
[ did some more cleanups ]
Signed-off-by: NIngo Molnar <mingo@elte.hu>
 arch/x86/include/asm/microcode.h  |   25 ++
 arch/x86/kernel/microcode_amd.c   |   58 ++----
 arch/x86/kernel/microcode_core.c  |  326 +++++++++++++++++++++-----------------
 arch/x86/kernel/microcode_intel.c |   92 +++-------
 4 files changed, 261 insertions(+), 240 deletions(-)

(~20 new comment lines)
      871b72dd
  15. 18 3月, 2009 1 次提交
    • I
      x86: microcode: cleanup · 4bae1967
      由 Ingo Molnar 提交于 
      Impact: cleanup

Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Dmitry Adamushko <dmitry.adamushko@gmail.com>
Cc: Peter Oruba <peter.oruba@amd.com>
LKML-Reference: <200903111632.37279.rusty@rustcorp.com.au>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
      4bae1967
  17. 19 12月, 2008 1 次提交
    • I
      x86: fix warning in arch/x86/kernel/microcode_amd.c · f34a10bd
      由 Ingo Molnar 提交于 
      this warning:

  arch/x86/kernel/microcode_amd.c: In function ‘apply_microcode_amd’:
  arch/x86/kernel/microcode_amd.c:163: warning: cast from pointer to integer of different size
  arch/x86/kernel/microcode_amd.c:163: warning: cast from pointer to integer of different size

triggers because we want to pass the address to the microcode MSR,
which is 64-bit even on 32-bit. Cast it explicitly to express this.
Signed-off-by: NIngo Molnar <mingo@elte.hu>
      f34a10bd
  19. 17 12月, 2008 10 次提交
  21. 28 10月, 2008 1 次提交
  23. 24 9月, 2008 1 次提交
  25. 23 9月, 2008 3 次提交
  27. 14 9月, 2008 1 次提交
  29. 12 9月, 2008 1 次提交
    • D
      x86, microcode rework, v2 · a0a29b62
      由 Dmitry Adamushko 提交于 
      this is a rework of the microcode splitup in tip/x86/microcode

(1) I think this new interface is cleaner (look at the changes
    in 'struct microcode_ops' in microcode.h);

(2) it's -64 lines of code;
Signed-off-by: NIngo Molnar <mingo@elte.hu>
      a0a29b62
  31. 22 8月, 2008 1 次提交
  33. 20 8月, 2008 2 次提交
  35. 01 8月, 2008 3 次提交
  37. 29 7月, 2008 2 次提交
    • I
      x86, microcode: fix module license string · 5d7b6052
      由 Ingo Molnar 提交于 
      fix:

 FATAL: modpost: GPL-incompatible module microcode_amd.ko uses GPL-only symbol 'set_cpus_allowed_ptr'
Signed-off-by: NIngo Molnar <mingo@elte.hu>
      5d7b6052
    • P
      x86: AMD microcode patch loading support · 80cc9f10
      由 Peter Oruba 提交于 
      This patch introduces microcode patch loading for AMD
processors. It is based on previous corresponding work
for Intel processors.

It hooks into the general patch loading module. Main
difference is that a container file format is used to hold
all patch data for multiple processors as well as an
equivalent CPU table, which comes seperately, as opposed
to Intel's microcode patching solution.

Kconfig and Makefile have been changed provice config
and build option for new source file.
Signed-off-by: NPeter Oruba <peter.oruba@amd.com>
Cc: Tigran Aivazian <tigran@aivazian.fsnet.co.uk>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
      80cc9f10