On 4/15/21 2:50 PM, Borislav Petkov wrote: > On Thu, Apr 15, 2021 at 01:08:09PM -0500, Brijesh Singh wrote: >> This is from Family 19h Model 01h Rev B01. The processor which >> introduces the SNP feature. Yes, I have already upload the PPR on the BZ. >> >> The PPR is also available at AMD: https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.amd.com%2Fen%2Fsupport%2Ftech-docs&data=04%7C01%7Cbrijesh.singh%40amd.com%7Ca20ef8e85fca49875f4b08d90047b837%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637541130354491050%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=MosOIntXEk6ikXpIFd89XkZPb8H6oO25y2mP2l82blU%3D&reserved=0 > Please add the link in the bugzilla to the comments here - this is the > reason why stuff is being uploaded in the first place, because those > vendor sites tend to change and those links become stale with time. Will do. > >> I guess I was trying to shorten the name. I am good with struct rmpentry; > Yes please - typedefs are used only in very specific cases. > >> All those magic numbers are documented in the PPR. > We use defines - not magic numbers. For example > > #define RMPTABLE_ENTRIES_OFFSET 0x4000 > > The 8 is probably > > PAGE_SHIFT - RMPENTRY_SHIFT > > because you have GPA bits [50:12] and an RMP entry is 16 bytes, i.e., 1 << 4. > > With defines it is actually clear what the computation is doing - with > naked numbers not really. Sure, I will add macros to make it more readable.
