Re: [PATCH 04/10] x86/tdx: Make macros of TDCALLs consistent with the spec

From: Huang, Kai
Date: Sun Jul 16 2023 - 21:09:45 EST


On Fri, 2023-07-14 at 15:28 +0300, Nikolay Borisov wrote:
>
> On 12.07.23 г. 11:55 ч., Kai Huang wrote:
> > The TDX spec names all TDCALLs with prefix "TDG". Currently, the kernel
> > doesn't follow such convention for the macros of those TDCALLs but uses
> > prefix "TDX_" for all of them. Although it's arguable whether the TDX
> > spec names those TDCALLs properly, it's better for the kernel to follow
> > the spec when naming those macros.
> >
> > Change all macros of TDCALLs to make them consistent with the spec. As
> > a bonus, they get distinguished easily from the host-side SEAMCALLs,
> > which all have prefix "TDH".
> >
> > No functional change intended.
> >
> > Signed-off-by: Kai Huang <kai.huang@xxxxxxxxx>
> > ---
> > arch/x86/coco/tdx/tdx.c | 22 +++++++++++-----------
> > 1 file changed, 11 insertions(+), 11 deletions(-)
> >
> > diff --git a/arch/x86/coco/tdx/tdx.c b/arch/x86/coco/tdx/tdx.c
> > index 5b8056f6c83f..de021df92009 100644
> > --- a/arch/x86/coco/tdx/tdx.c
> > +++ b/arch/x86/coco/tdx/tdx.c
> > @@ -15,11 +15,11 @@
> > #include <asm/pgtable.h>
> >
> > /* TDX module Call Leaf IDs */
> > -#define TDX_GET_INFO 1
> > -#define TDX_GET_VEINFO 3
> > -#define TDX_GET_REPORT 4
> > -#define TDX_ACCEPT_PAGE 6
> > -#define TDX_WR 8
> > +#define TDG_VP_INFO 1
> > +#define TDG_VP_VEINFO_GET 3
> > +#define TDG_MR_REPORT 4
> > +#define TDG_MEM_PAGE_ACCEPT 6
> > +#define TDG_VM_WR 8
> >
> What branch is this patch set based off? Because the existing TDX_GET_*
> defines are in arch/x86/include/asm/shared/tdx.h due to ff40b5769a50f ?
>

It was based on tip/x86/tdx, which didn't have above patch. I'll rebase to the
Linus's tree for the next round since it now has all TDX patches anyway.