[RFC v2 11/13] keys/mktme: Program memory encryption keys on a system wide basis

[Alison Schofield]

On Tue, Dec 04, 2018 at 12:50:09PM +0300, Kirill A. Shutemov wrote:
> On Tue, Dec 04, 2018 at 09:21:45AM +0000, Peter Zijlstra wrote:
> > On Mon, Dec 03, 2018 at 11:39:58PM -0800, Alison Schofield wrote:
> > 
> > > +struct mktme_hw_program_info {
> > > +	struct mktme_key_program *key_program;
> > > +	unsigned long status;
> > > +};
> > > +
> > > +/* Program a KeyID on a single package. */
> > > +static void mktme_program_package(void *hw_program_info)
> > > +{
> > > +	struct mktme_hw_program_info *info = hw_program_info;
> > > +	int ret;
> > > +
> > > +	ret = mktme_key_program(info->key_program);
> > > +	if (ret != MKTME_PROG_SUCCESS)
> > > +		WRITE_ONCE(info->status, ret);
> > 
> > What's the purpose of that WRITE_ONCE()?
> 
> [I suggested the code to Alison.]
> 
> Yes, you're right. Simple assignment will do.
Will do. Thanks!

> 
> -- 
>  Kirill A. Shutemov