From: Linus Torvalds <torvalds@linux-foundation.org>
To: Jason Gunthorpe <jgg@nvidia.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Ankit Agrawal <ankita@nvidia.com>,
Alex Williamson <alex@shazbot.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
mm-commits@vger.kernel.org
Subject: Re: [GIT PULL] MM updates for 6.19-rc1
Date: Fri, 5 Dec 2025 19:43:52 -0800 [thread overview]
Message-ID: <CAHk-=wj681NMt4ofHWVDzbcb2CjyAZWnVYX=9eJ5tmYjEONNBA@mail.gmail.com> (raw)
In-Reply-To: <20251206025434.GA1422789@nvidia.com>
On Fri, 5 Dec 2025 at 18:54, Jason Gunthorpe <jgg@nvidia.com> wrote:
>
> Reverting it now works well enough too. Let's see if Ankit can prepare
> a new revision and perhaps Alex can forward it next week or very early
> rc1 after LPC.
So adding that memory poisoning logic at mmap time looks crazy to me.
The mmap has *nothing* to do with memory poisoning. The memory is
there whether it is mapped or not, and admittedly it's harder to
_access_ when not mapped, but it still has nothing to do with mmap.
As far as I can tell, that memory poisoning logic should be
added/removed when the device is registered or unregistered, and there
is nothing about mmap that should have any effect what-so-ever.
Linus
next prev parent reply other threads:[~2025-12-06 3:44 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-12-04 5:29 Andrew Morton
2025-12-05 21:56 ` Linus Torvalds
2025-12-06 2:54 ` Jason Gunthorpe
2025-12-06 3:43 ` Linus Torvalds [this message]
2025-12-05 22:14 ` pr-tracker-bot
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