Re: [RFC PATCH] mm: only set fault addrsss' access bit in do_anonymous_page

["David Hildenbrand (Arm)" <david@kernel.org>]

On 2/13/26 15:52, Wenchao Hao wrote:
> On Fri, Feb 13, 2026 at 5:08 PM David Hildenbrand (Arm)
> <david@kernel.org> wrote:
>>
>> On 2/13/26 10:02, Wenchao Hao wrote:
>>> On Thu, Feb 12, 2026 at 4:54 PM David Hildenbrand (Arm)
>>> <david@kernel.org> wrote:
>>>
>>> Apologies for the delayed reply – I was just writing a demo to verify the
>>> approach you mentioned.
>>>
>>> Using the CONFIG_DEBUG_KERNEL compile-time macro to isolate this feature
>>> is indeed an excellent idea.
>>>
>>> However, in engineering practice, it requires recompiling and
>>> replacing the kernel,
>>> which can be cumbersome. Could we instead use a dynamic switch to control
>>> whether scan for zero-filled pages when reading /proc/[pid]/smaps?
>>
>> Maybe a kernel cmdline option could do?
> Kernel command line parameters can meet our requirements.
> 
>> Selectively enabling it for some PIDs only is not really possible, but also, maybe it's not really needed.
> Yes, it is unnecessary to do that.
> 
> By the way, will you send a new patch for this, or shall I take care of it?

You :)

-- 
Cheers,

David