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[122.150.204.48]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-77232248100sm2269195b3a.98.2025.08.29.14.39.21 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 29 Aug 2025 14:39:23 -0700 (PDT) Message-ID: <340e9737-c31d-4c25-9e93-be22641251e0@linaro.org> Date: Sat, 30 Aug 2025 07:39:18 +1000 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 08/18] cpus: document that qemu_cpu_kick() can be used for BQL-less operation To: Paolo Bonzini , qemu-devel@nongnu.org Cc: peterx@redhat.com, imammedo@redhat.com References: <20250829152909.1589668-1-pbonzini@redhat.com> <20250829153115.1590048-4-pbonzini@redhat.com> From: Richard Henderson Content-Language: en-US In-Reply-To: <20250829153115.1590048-4-pbonzini@redhat.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=2607:f8b0:4864:20::429; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x429.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, 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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On 8/30/25 01:31, Paolo Bonzini wrote: > Signed-off-by: Paolo Bonzini > --- > include/hw/core/cpu.h | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/include/hw/core/cpu.h b/include/hw/core/cpu.h > index 23bd02277f4..8b57bcd92c9 100644 > --- a/include/hw/core/cpu.h > +++ b/include/hw/core/cpu.h > @@ -829,7 +829,8 @@ bool qemu_cpu_is_self(CPUState *cpu); > * qemu_cpu_kick: > * @cpu: The vCPU to kick. > * > - * Kicks @cpu's thread. > + * Kicks @cpu's thread to exit the accelerator. For accelerators that > + * can do that, the target vCPU thread will try not to take the BQL. > */ > void qemu_cpu_kick(CPUState *cpu); > Reviewed-by: Richard Henderson r~