Re: [PATCH] mm,hwpoison: unmap poisoned page before invalidation

[Oscar Salvador]

On Tue, Mar 29, 2022 at 11:49:53AM -0400, Rik van Riel wrote:

> It results in us returning to userspace as if the page
> fault had been handled, resulting in a second fault on
> the same address.
> 
> However, now the page is no longer in the page cache,
> and we can read it in from disk, to a page that is not
> hardware poisoned, and we can then use that second page
> without issues.

Ok, I see, thanks a lot for the explanation Rik.


-- 
Oscar Salvador
SUSE Labs