Re: [Xen-devel] [PATCH for-4.13 0/2] xen/nospec: Add Kconfig options for speculative hardening

[Jürgen Groß <jgross@xxxxxxxx>]

On 30.09.19 20:24, Andrew Cooper wrote:
> The main purpose is patch 2.  The "l1tf-barrier" work currently causes a perf
> hit and gains no safety, and is therefore unfit for inclusion into Xen 4.13 at
> this time.
>
> Andrew Cooper (2):
>    xen/nospec: Introduce CONFIG_SPECULATIVE_ARRAY_HARDEN
>    xen/nospec: Introduce CONFIG_SPECULATIVE_BRANCH_HARDEN and disable it
>
>   docs/misc/xen-command-line.pandoc |  8 +-------
>   xen/arch/x86/spec_ctrl.c          | 17 ++---------------
>   xen/common/Kconfig                | 38 ++++++++++++++++++++++++++++++++++++++
>   xen/include/asm-x86/cpufeatures.h |  2 +-
>   xen/include/asm-x86/nospec.h      |  4 ++--
>   xen/include/asm-x86/spec_ctrl.h   |  1 -
>   xen/include/xen/nospec.h          | 12 ++++++++++++
>   7 files changed, 56 insertions(+), 26 deletions(-)
For the series:

Release-acked-by: Juergen Gross <jgross@xxxxxxxx>


Juergen

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