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

[Ingo Molnar <mingo@elte.hu>]

* 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