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[173.198.77.218]) by smtp.gmail.com with ESMTPSA id e12sm24464132pfc.214.2021.08.10.11.03.47 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 10 Aug 2021 11:03:56 -0700 (PDT) Subject: Re: [PATCH for 6.2 47/49] bsd-user: Implement interlock for atomic operations To: Warner Losh , qemu-devel@nongnu.org References: <20210807214242.82385-1-imp@bsdimp.com> <20210807214242.82385-48-imp@bsdimp.com> From: Richard Henderson Message-ID: Date: Tue, 10 Aug 2021 08:03:38 -1000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 MIME-Version: 1.0 In-Reply-To: <20210807214242.82385-48-imp@bsdimp.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=2607:f8b0:4864:20::1035; envelope-from=richard.henderson@linaro.org; helo=mail-pj1-x1035.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, NICE_REPLY_A=-0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kevans@freebsd.org, Warner Losh , Stacey Son Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 8/7/21 11:42 AM, Warner Losh wrote: > From: Warner Losh > > Implement the internlock in fork_start() and fork_end() to properly cope > with atomic operations and to safely keep state for parent and child > processes. > > Signed-off-by: Stacey Son > Signed-off-by: Warner Losh > --- > bsd-user/main.c | 23 +++++++++++++++++++++++ > 1 file changed, 23 insertions(+) Reviewed-by: Richard Henderson r~