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Date: Thu, 16 Jun 2022 12:18:57 -0700 From: Linus Torvalds <torvalds@...ux-foundation.org> To: Matthew Wilcox <willy@...radead.org> Cc: "Jason A. Donenfeld" <Jason@...c4.com>, Linux-MM <linux-mm@...ck.org>, linux-xfs <linux-xfs@...r.kernel.org>, linux-hardening@...r.kernel.org, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, Uladzislau Rezki <urezki@...il.com>, Kees Cook <keescook@...omium.org>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Joe Perches <joe@...ches.com> Subject: Re: [PATCH] usercopy: use unsigned long instead of uintptr_t On Thu, Jun 16, 2022 at 12:14 PM Linus Torvalds <torvalds@...ux-foundation.org> wrote: > > In that situation, we'd probably just see "long long" being 128-bit > ("I32LP64LL128"). Looking around, it looks like people prefer "long long long" (or in the kernel, just "u128") for this, because so many have already gotten used to "long long" being 64-bit, and 32-bit architectures (where "long" is 32-bit and "long long" is 64-bit) are still relevant enough that people want to keep that. Linus
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