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SubjectRe: [PATCH 0/5] x86, microcode, AMD: Size checking fixes

* Borislav Petkov <bp@amd64.org> wrote:

> From: Borislav Petkov <borislav.petkov@amd.com>
>
> Hi all,
>
> this is a patchset that reworks and fixes ucode size checking.
> The meat of it is contained in 3/5 which reworks the code to
> iterate over the patches in the microcode binary image
> _without_ vmalloc-ing space for every patch in succession in
> order to look at it and go on to the next, if it doesn't fit.
>
> In any case, we end up loading at most one patch so before we
> copy it in local storage we do all possible checks on it now,
> and copy it only then, if all checks are passed.
>
> Also, for simplicity, we alloc a single 4K page as a buffer
> for it which we keep per CPU as long as the ucode module is
> loaded and free upon exit. This simplifies all
> allocations/cleanup paths significantly.

No objections from anyone it appears - did you want to send this
as a pull request?

Thanks,

Ingo


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