Messages in this thread | | | From | Ashok Raj <> | Subject | [v2 0/3] Patches to address some limitations in OS microcode loading. | Date | Wed, 21 Feb 2018 22:33:22 -0800 |
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Patch series to address limitations of OS microcode loading.
Review comments from Boris:
Changes since v1: Patch 1/3 - Check for revision to avoid duplicate microcode load in early load - Added inline comments.
Changes since v1: Patch 2/3 - Change to native_wbinvd for early load.
Changes since v1: Patch 3/3 - Check for return code of stop_machine - When microcode file load fails, stop on first error. - If any of the present CPUs are offline, then stop reload. This is just for being paranoid. - Added more comments in commit log and inline in file. - split some functionality from reload_store() per Boris's comments.
What's not done from review: TBD: - Load microcode file only once. Added comments in source for future cleanup. - Removing ucd->errors. (Gives a count of failed loads)
Ashok Raj (3): x86/microcode/intel: Check microcode revision before updating sibling threads x86/microcode/intel: Perform a cache flush before ucode update. x86/microcode: Quiesce all threads before a microcode update.
arch/x86/kernel/cpu/microcode/core.c | 207 ++++++++++++++++++++++++++++++---- arch/x86/kernel/cpu/microcode/intel.c | 43 ++++++- 2 files changed, 222 insertions(+), 28 deletions(-)
-- 2.7.4
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