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From: Yonghong Song In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: 5DB7EC0005 X-Stat-Signature: eiyc41f774pyz8kayzca55wo7ki1og6g X-Rspam-User: X-HE-Tag: 1709402962-85820 X-HE-Meta: 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 3/1/24 10:27 AM, Alexei Starovoitov wrote: > On Fri, Mar 1, 2024 at 10:26 AM Kui-Feng Lee wrote: >> For BPF, >> >> We have a lot of code mixing bpf_type_flag and bpf_reg_type in bpf. >> They cause the warning messages described in the message following. >> Do we want to fix them all, or keep them as they are? >> >> They can be fixed by merging two enum types or casting here and there if >> we want. Any other idea? > We probably should add -Wno-enum-enum-conversion to kernel/bpf/Makefile instead. The warnings are only triggered with latest llvm19 development branch. The warnings are triggered in many subsystems, bpf, mm, etc. The following commandline can workaround the issue: make LLVM=1 -j KCFLAGS=-Wno-enum-enum-conversion There is a discussion how to fix it here: https://github.com/ClangBuiltLinux/linux/issues/2002 No conclusion yet.