ACK: [BIONIC][PULL] Additional spectre and meltdown patches for ppc64el

[Kamal Mostafa]

Acked-by: Kamal Mostafa <kamal at canonical.com>

On Fri, Apr 06, 2018 at 12:08:12AM +0000, Tyler Hicks wrote:
> BugLink: https://bugs.launchpad.net/bugs/1760099
> 
> These are all clean cherry picks from linux-next. The changes have not yet been
> merged by Linus but I expect them to be during the current merge window.
> 
> I've reviewed the patches and they look straightforward. They're mostly
> cleanups and improved reporting to userspace.
> 
> They all share a common BugLink but each patch is either specific to a single
> CVE or all three Spectre/Meltdown CVEs. I listed the specific CVE, or all
> three, in each patch's commit message but I'm not sure if that was the right
> thing to do. Splitting the patch set out into separate pull requests is
> almost certainly not the right thing to do. Let me know if this causes
> problems with the automated changelog generation and I can adjust the
> commit messages.
> 
> The following changes since commit be1171dce6c7dec2bae35061963f08a0e4d5b7f9:
> 
>   UBUNTU: [Config] CONFIG_BLK_DEV_NMVE=m (2018-04-05 08:30:29 -0500)
> 
> are available in the git repository at:
> 
>   https://git.launchpad.net/~tyhicks/ubuntu/+source/linux/+git/bionic lp1760099-ppc-meltdown-spectre
> 
> for you to fetch changes up to 275060e52218a903312e6f63025f7cc7c4f5e5dc:
> 
>   powerpc/64s: Wire up cpu_show_spectre_v2() (2018-04-05 23:41:06 +0000)
> 
> ----------------------------------------------------------------
> Mauricio Faria de Oliveira (1):
>       powerpc/rfi-flush: Differentiate enabled and patched flush types
> 
> Michael Ellerman (14):
>       powerpc/rfi-flush: Move the logic to avoid a redo into the debugfs code
>       powerpc/rfi-flush: Make it possible to call setup_rfi_flush() again
>       powerpc/rfi-flush: Always enable fallback flush on pseries
>       powerpc/rfi-flush: Call setup_rfi_flush() after LPM migration
>       powerpc/pseries: Add new H_GET_CPU_CHARACTERISTICS flags
>       powerpc: Add security feature flags for Spectre/Meltdown
>       powerpc/pseries: Set or clear security feature flags
>       powerpc/powernv: Set or clear security feature flags
>       powerpc/64s: Move cpu_show_meltdown()
>       powerpc/64s: Enhance the information in cpu_show_meltdown()
>       powerpc/powernv: Use the security flags in pnv_setup_rfi_flush()
>       powerpc/pseries: Use the security flags in pseries_setup_rfi_flush()
>       powerpc/64s: Wire up cpu_show_spectre_v1()
>       powerpc/64s: Wire up cpu_show_spectre_v2()
> 
>  arch/powerpc/include/asm/hvcall.h            |  3 +
>  arch/powerpc/include/asm/security_features.h | 66 +++++++++++++++++++
>  arch/powerpc/include/asm/setup.h             |  2 +-
>  arch/powerpc/kernel/Makefile                 |  2 +-
>  arch/powerpc/kernel/security.c               | 93 +++++++++++++++++++++++++++
>  arch/powerpc/kernel/setup_64.c               | 33 +++++-----
>  arch/powerpc/lib/feature-fixups.c            |  9 ++-
>  arch/powerpc/platforms/powernv/setup.c       | 95 +++++++++++++++++++---------
>  arch/powerpc/platforms/pseries/mobility.c    |  3 +
>  arch/powerpc/platforms/pseries/pseries.h     |  2 +
>  arch/powerpc/platforms/pseries/setup.c       | 72 +++++++++++++++------
>  11 files changed, 310 insertions(+), 70 deletions(-)
>  create mode 100644 arch/powerpc/include/asm/security_features.h
>  create mode 100644 arch/powerpc/kernel/security.c



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