On 7/29/22 14:46, Pawan Gupta wrote:
Let me see if there is a way to distinguish between 4. and 5. below:
CPU category X86_BUG_MMIO_STALE_DATA X86_BUG_MMIO_UNKNOWN
- Known affected (in cpu list) 1 0
- CPUs with HW immunity (MMIO_NO=1) 0 0
- Other vendors 0 0
- Older Intel CPUs 0 1
- Not affected current CPUs (but MMIO_NO=0) 0 ?
This seems like something we would need to go back to our colleagues to figure out. Basically, at the time of publishing the X86_BUG_MMIO_STALE_DATA papers, what was considered "older"?
In other words, we need the folks at Intel that did this good work to _show_ their work (at least part of it).