On Wed, 2020-05-13 at 15:33 +0200, Thomas Gleixner wrote:
>
>
> Balbir Singh writes:
> > +With an increasing number of vulnerabilities being reported around
> > data
> > +leaks from L1D, a new user space mechanism to flush the L1D cache
> > on
> > +context switch is added to the kernel. This
Balbir Singh writes:
> +With an increasing number of vulnerabilities being reported around data
> +leaks from L1D, a new user space mechanism to flush the L1D cache on
> +context switch is added to the kernel. This should help address
is added to the kernel? This is documentation of an existing
Add documentation of l1d flushing, explain the need for the
feature and how it can be used.
Signed-off-by: Balbir Singh
Reviewed-by: Kees Cook
---
Documentation/admin-guide/hw-vuln/index.rst | 1 +
.../admin-guide/hw-vuln/l1d_flush.rst | 40 +++
2 files changed, 41
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