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[88.187.86.199]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-49982165351sm77726135e9.10.2026.08.13.11.17.18 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Thu, 13 Aug 2026 11:17:19 -0700 (PDT) From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Cc: Daniel Henrique Barboza , Paolo Bonzini , Pierrick Bouvier , Mohamed Mediouni , Alexander Graf , qemu-ppc@nongnu.org, qemu-riscv@nongnu.org, kvm@vger.kernel.org, Richard Henderson , qemu-arm@nongnu.org, Magnus Kulke , Peter Maydell , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Zhao Liu Subject: [PATCH 05/16] cpus: Improve cpu_pause() docstring Date: Thu, 13 Aug 2026 20:16:28 +0200 Message-ID: <20260813181640.6537-6-philmd@oss.qualcomm.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260813181640.6537-1-philmd@oss.qualcomm.com> References: <20260813181640.6537-1-philmd@oss.qualcomm.com> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Proofpoint-Spam-Info: AW1haW4tMjYwODEzMDEzMiBTYWx0ZWRfX/z6u8ISWJXIm TbpOE7N4IQi9LL1/8Az73wbdD2m72WhmdHFHNe54SJGOnUoI4EPtca3/tGkJ0ikNDEyTc3UIE9X +HTS7cQXO1n4zG/rqcCtJA3wpAazEz4= X-Proofpoint-GUID: VVMSLYTS2VxWDClBQiiFWfaRKQ2sOAEp X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODEzMDEzMiBTYWx0ZWRfX/Vx7trWZLxjH lcS+ykStKX6rD9CBakcW+MUsOKhwrgBsVcoOzgNlDSDNLPHq/9Y5z8W7081fzEIK6Ut+rq8jcwk DvM1FDaInLgeW8Jtzlge6ZCwI23WaoyytZckP6HlOxe1aRNcI44VeNiT9mLVyLuYCV0BwHqa1sm qSN2Ny5WdLvxzBUpmV4yPhFWqjE1orvfmRbF7n29IxZu6jdYGT0Zf4m8gICdNlNjoL/s27ZL/8P tUeymiH80zndREcpquboakH1n0KGt6ARkXgDoGjZflDTuZVAo9lEwzzqbn3asOggl756XHy9PsA EbzVxAxHqiPhhxzuE2S/tqIOThq9rPCULXwAxZ9+slWQF37jMSNULRiGOaEj+cT+iQqw01U6gP4 4U957cHpioqS1YGYtIiFov7A8m3LLSsdoEAn4WxUzoYCOUg5RPZCjrbigfV0tBjotL82GTghNon kqiec4QFCezi+31qZRQ== X-Proofpoint-ORIG-GUID: VVMSLYTS2VxWDClBQiiFWfaRKQ2sOAEp X-Authority-Analysis: v=2.4 cv=VebH+lp9 c=1 sm=1 tr=0 ts=6a7e0a31 cx=c_pps a=WeENfcodrlLV9YRTxbY/uA==:117 a=4s3hRJSeHn4rkQlkrse1kQ==:17 a=IkcTkHD0fZMA:10 a=Sv0fKeRqtYgA:10 a=M51BFTxLslgA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=Um2Pa8k9VHT-vaBCBUpS:22 a=EUspDBNiAAAA:8 a=TUGipdnbivDJOOLMS8gA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=ZXulRonScM0A:10 a=kacYvNCVWA4VmyqE58fU:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-08-13_05,2026-08-12_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 phishscore=0 bulkscore=0 suspectscore=0 clxscore=1015 lowpriorityscore=0 priorityscore=1501 impostorscore=0 spamscore=0 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608130132 Mention cpu_pause() might not be immediately fullfilled: when the requested vCPU is not the current one, the request is asynchroneous. Mention the method goes in pair with cpu_resume(). Signed-off-by: Philippe Mathieu-Daudé --- include/hw/core/cpu.h | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/include/hw/core/cpu.h b/include/hw/core/cpu.h index 81af7b9ee1a..f1ac492714e 100644 --- a/include/hw/core/cpu.h +++ b/include/hw/core/cpu.h @@ -1045,10 +1045,13 @@ void cpu_reset_interrupt(CPUState *cpu, int mask); void cpu_exit(CPUState *cpu); /** - * cpu_pause: + * cpu_pause - Request the CPU to pause execution * @cpu: The CPU to pause. * - * Pauses CPU, i.e. puts CPU into stopped state. + * If @cpu is the current thread, immediately pause its execution; + * otherwise asynchronously request it to pause. + * + * Note: Use cpu_resume() to restart execution. */ void cpu_pause(CPUState *cpu); -- 2.53.0