* David Hildenbrand <david@xxxxxxxxxx> [250325 14:52]: > On 25.03.25 13:26, Peter Zijlstra wrote: > > On Tue, Mar 25, 2025 at 08:15:41AM -0400, guoren@xxxxxxxxxx wrote: > > > From: "Guo Ren (Alibaba DAMO Academy)" <guoren@xxxxxxxxxx> > > > > > > Since 2001, the CONFIG_64BIT kernel has been built with the LP64 ABI, > > > but this patchset allows the CONFIG_64BIT kernel to use an ILP32 ABI > > > > I'm thinking you're going to be finding a metric ton of assumptions > > about 'unsigned long' being 64bit when 64BIT=y throughout the kernel. > > > > I know of a couple of places where 64BIT will result in different math > > such that a 32bit 'unsigned long' will trivially overflow. > > > > Please, don't do this. This adds a significant maintenance burden on all > > of us. > > > > Fully agreed. I would go further and say I do not want this to go in. The open ended maintenance burden is not worth extending hardware life of a board with 16mb of ram (If I understand your 2023 LPC slides correctly). Thank you, Liam
