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SubjectRe: [PATCH v8 -tip 13/26] kernel/entry: Add support for core-wide protection of kernel-mode
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On 10/19/20 6:43 PM, Joel Fernandes (Google) wrote:
>
> ---
> .../admin-guide/kernel-parameters.txt | 7 +
> include/linux/entry-common.h | 2 +-
> include/linux/sched.h | 12 +
> kernel/entry/common.c | 25 +-
> kernel/sched/core.c | 229 ++++++++++++++++++
> kernel/sched/sched.h | 3 +
> 6 files changed, 275 insertions(+), 3 deletions(-)
>
> diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
> index 3236427e2215..48567110f709 100644
> --- a/Documentation/admin-guide/kernel-parameters.txt
> +++ b/Documentation/admin-guide/kernel-parameters.txt
> @@ -4678,6 +4678,13 @@
>
> sbni= [NET] Granch SBNI12 leased line adapter
>
> + sched_core_protect_kernel=

Needs a list of possible values after '=', along with telling us
what the default value/setting is.


> + [SCHED_CORE] Pause SMT siblings of a core running in
> + user mode, if at least one of the siblings of the core
> + is running in kernel mode. This is to guarantee that
> + kernel data is not leaked to tasks which are not trusted
> + by the kernel.
> +


thanks.

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