Re: [PATCH v13 1/3] x86/tdx: Add TDX Guest attestation interface driver

["Huang, Kai" <kai.huang@intel.com>]

On Mon, 2022-09-12 at 19:44 -0700, Sathyanarayanan Kuppuswamy wrote:
> 
> On 9/12/22 6:25 PM, Huang, Kai wrote:
> > > diff --git a/arch/x86/coco/tdx/tdx.c b/arch/x86/coco/tdx/tdx.c
> > > index 928dcf7a20d9..8b5c59110321 100644
> > > --- a/arch/x86/coco/tdx/tdx.c
> > > +++ b/arch/x86/coco/tdx/tdx.c
> > > @@ -5,16 +5,21 @@
> > >  #define pr_fmt(fmt)     "tdx: " fmt
> > >  
> > >  #include <linux/cpufeature.h>
> > > +#include <linux/miscdevice.h>
> > > +#include <linux/mm.h>
> > > +#include <linux/io.h>
> > Sorry perhaps I am missing something, but what is the reason to include
> > <linux/mm.h>?
> 
> It is included for kmalloc/kfree, file related structs and copy_{from|to}_user().
> 
> > 
> > <linux/io.h> is for virt_to_phys()?
> 
> Yes
> 
> > 
> > And should we explicitly include <linux/uaccess.h> for copy_{from|to}_user(),
> 
> mm.h covers it. So I don't think we should explicitly include it.
> 
> > and include the header (<linux/string.h> ?) for memchr_inv()?
> 
> One of the previous headers includes linux/string.h (I am not sure which one).
> So why include it explicitly?
> 

OK.

-- 
Thanks,
-Kai