Re: [PATCH 6.6 0/3] arm64: Speed up boot with faster linear map creation

[Ryan Roberts <ryan.roberts@arm.com>]

On 17/02/2026 13:50, Greg KH wrote:
> On Tue, Feb 17, 2026 at 01:34:05PM +0000, Ryan Roberts wrote:
>> Hi All,
>>
>> This series is a backport that applies to stable kernel 6.6 (base v6.6.126), for
>> some speed ups to enable significantly faster booting on systems with a lot of
>> memory. The patches were originally posted at:
>>
>>   https://lore.kernel.org/linux-arm-kernel/20240412131908.433043-1-ryan.roberts@arm.com/
>>
>> ... and were originally merged upstream in v6.10-rc1.
>>
>> I'm requesting this be merged to stable on behalf of a partner who wants to get
>> the benefit of this series in Debian 12.
> 
> Why can't they just use a newer kernel version (i.e. 6.12)?  Surely they
> would be able to justify moving to a newer kernel for performance
> reasons, why enable them to stay on an older one, just delaying the
> inevitable upgrade they will have to do anyway in a year or so?

I can't answer this presicely, but I did ask and push for that approach. As I
understand it, they are stuck with Debian 12, which is stuck with kernel 6.1.
The Debian maintainer apparently requested that these go through stable in order
to get them into Debian 12.

Thanks,
Ryan

> 
> thanks,
> 
> greg k-h