Re: [PATCH] mm: remove kern_addr_valid() completely

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To: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>

Subject: Re: [PATCH] mm: remove kern_addr_valid() completely

From: Christoph Hellwig <hch@xxxxxxxxxxxxx>

Date: Tue, 18 Oct 2022 01:09:38 -0700

Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, linux-alpha@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-snps-arc@xxxxxxxxxxxxxxxxxxx, linux-arm-kernel@xxxxxxxxxxxxxxxxxxx, linux-csky@xxxxxxxxxxxxxxx, linux-hexagon@xxxxxxxxxxxxxxx, linux-ia64@xxxxxxxxxxxxxxx, loongarch@xxxxxxxxxxxxxxx, linux-m68k@xxxxxxxxxxxxxxx, linux-mips@xxxxxxxxxxxxxxx, openrisc@xxxxxxxxxxxxxxxxxxxx, linux-parisc@xxxxxxxxxxxxxxx, linuxppc-dev@xxxxxxxxxxxxxxxx, linux-riscv@xxxxxxxxxxxxxxxxxxx, linux-s390@xxxxxxxxxxxxxxx, linux-sh@xxxxxxxxxxxxxxx, sparclinux@xxxxxxxxxxxxxxx, linux-um@xxxxxxxxxxxxxxxxxxx, linux-xtensa@xxxxxxxxxxxxxxxx, linux-fsdevel@xxxxxxxxxxxxxxx, Richard Henderson <richard.henderson@xxxxxxxxxx>, Ivan Kokshaysky <ink@xxxxxxxxxxxxxxxxxxxx>, Matt Turner <mattst88@xxxxxxxxx>, Vineet Gupta <vgupta@xxxxxxxxxx>, Russell King <linux@xxxxxxxxxxxxxxx>, Catalin Marinas <catalin.marinas@xxxxxxx>, Will Deacon <will@xxxxxxxxxx>, Guo Ren <guoren@xxxxxxxxxx>, Huacai Chen <chenhuacai@xxxxxxxxxx>, WANG Xuerui <kernel@xxxxxxxxxx>, Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>, Greg Ungerer <gerg@xxxxxxxxxxxxxx>, Michal Simek <monstr@xxxxxxxxx>, Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx>, Dinh Nguyen <dinguyen@xxxxxxxxxx>, Jonas Bonn <jonas@xxxxxxxxxxxx>, Stefan Kristiansson <stefan.kristiansson@xxxxxxxxxxxxx>, Stafford Horne <shorne@xxxxxxxxx>, "James E . J . Bottomley" <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx>, Helge Deller <deller@xxxxxx>, Michael Ellerman <mpe@xxxxxxxxxxxxxx>, Nicholas Piggin <npiggin@xxxxxxxxx>, Christophe Leroy <christophe.leroy@xxxxxxxxxx>, Paul Walmsley <paul.walmsley@xxxxxxxxxx>, Palmer Dabbelt <palmer@xxxxxxxxxxx>, Albert Ou <aou@xxxxxxxxxxxxxxxxx>, Heiko Carstens <hca@xxxxxxxxxxxxx>, Vasily Gorbik <gor@xxxxxxxxxxxxx>, Alexander Gordeev <agordeev@xxxxxxxxxxxxx>, Christian Borntraeger <borntraeger@xxxxxxxxxxxxx>, Sven Schnelle <svens@xxxxxxxxxxxxx>, Yoshinori Sato <ysato@xxxxxxxxxxxxx>, Rich Felker <dalias@xxxxxxxx>, "David S . Miller" <davem@xxxxxxxxxxxxx>, Richard Weinberger <richard@xxxxxx>, Anton Ivanov <anton.ivanov@xxxxxxxxxxxxxxxxxx>, Johannes Berg <johannes@xxxxxxxxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Borislav Petkov <bp@xxxxxxxxx>, Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>, x86@xxxxxxxxxx, "H . Peter Anvin" <hpa@xxxxxxxxx>, Andy Lutomirski <luto@xxxxxxxxxx>, Peter Zijlstra <peterz@xxxxxxxxxxxxx>, Chris Zankel <chris@xxxxxxxxxx>, Max Filippov <jcmvbkbc@xxxxxxxxx>

In-reply-to: <20221018074014.185687-1-wangkefeng.wang@huawei.com>

References: <20221018074014.185687-1-wangkefeng.wang@huawei.com>

Thanks, this is long overdue!

Acked-by: Christoph Hellwig <hch@xxxxxx>