On 11.12.24 17:11, Matthew Wilcox wrote:
On Wed, Dec 11, 2024 at 04:50:12PM +0100, David Hildenbrand wrote:
On 11.12.24 16:45, Matthew Wilcox wrote:
[1] https://kernelnewbies.org/MatthewWilcox/Memdescs
Don't get too excited about "we're almost out of types". The "managed"
type has subtypes. We could also collapse "file" and "anon" into a
single type and distinguish between them with a bit in the folio.
Anyway, yes, we can do one per-page flag. Two per-page flags starts to
get dicey.
hwpoison? :/
type 9! My thinking is that the hwpoison type contains an orig_memdesc
field, as well as whatever else is needed to describe the hwpoison that
was discovered (start, length, what else?)
Ah, I see. So you'd have to allocate that type during a MCE, and have
all file/anon detection code respect that indirection as well.
--
Cheers,
David / dhildenb
