Re: [PATCH] x86/microcode: Add an option to reload microcode even if revision is unchanged

[Raj, Ashok]

On Thu, Sep 05, 2019 at 09:49:50PM +0200, Borislav Petkov wrote:
> On Thu, Sep 05, 2019 at 12:40:44PM -0700, Raj, Ashok wrote:
> > The original description said to load a new microcode file, the content
> > could have changed, but revision in the header hasn't increased.
> 
> How does the hardware even accept a revision which is the same as the
> one already loaded?

Hardware will allow a reload as long as the loaded ucode svn <= the version being updated.