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[88.187.86.199]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-499aa0d6964sm61440885e9.9.2026.08.19.07.57.18 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Wed, 19 Aug 2026 07:57:18 -0700 (PDT) From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Cc: Paolo Bonzini , Daniel Henrique Barboza , Peter Maydell , Richard Henderson , Pierrick Bouvier Subject: [PATCH 04/11] accel/tcg: Refactor halt-to-execution flow in cpu_exec() Date: Wed, 19 Aug 2026 16:56:42 +0200 Message-ID: <20260819145649.23439-5-philmd@oss.qualcomm.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260819145649.23439-1-philmd@oss.qualcomm.com> References: <20260819145649.23439-1-philmd@oss.qualcomm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Proofpoint-GUID: XLwJBL0Z-tVrKg4G6vPTFHz34XiVySAl X-Proofpoint-ORIG-GUID: XLwJBL0Z-tVrKg4G6vPTFHz34XiVySAl X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODE5MDExNiBTYWx0ZWRfXyxdHMl8mCw7T UgOPVQmIEBtfXGtbS1pQ3WiyVHM1IhbRXbFFtR4V7SFokWZKqAN64ZKqhXy6cDKliNXjAJKtpmH VliIXmZkVJXLCj1Efa2WhdhFRzN18YsSMhulUVo+SE0yd6YCeFh6reaRoeE5QHZouIHlXrj9D8E buenXjiT1T3P5j+L389IecBv1D1jnF6N0N5azktY+qdzr/1IgLdkyzFAbluuXLNXR1YBH/xkF7D S1r2bi8uT4/W71cNunYjX/f9FqMnkdTscqAHMGNDlaTuaLE8MKj9Sati75PumKPUq9hMJbjnj7f LKSr/tlCsXZVxGU9b7C+k22ru3RR/rEWhqFnli8K3M3o1UVOjHfwFwi38c39NhlUgA2hKjRJdUu RIezCntzrZZrpBBkiIr7D1Dc7DIOFtwmF2NRF4HCnyhyhksI3bMSU0gWZx1mxdp0hGGV7NtK7CW KRmcusO5wyh58YFNkLA== X-Proofpoint-Spam-Info: AW1haW4tMjYwODE5MDExNiBTYWx0ZWRfX2B7smCFbMBhY +iMMuzHTe/IzVOsYn4Kgkp3+E0NyXEVNnTuyzymrnkr8IIPT35ohhmLwp9XEmlkf1A+jq1vdOkq ak9cI1NAi3VPZINdidhbrBt1jqqDjZ4= X-Authority-Analysis: v=2.4 cv=fvfsol4f c=1 sm=1 tr=0 ts=6a85c450 cx=c_pps a=50t2pK5VMbmlHzFWWp8p/g==: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=gowsoOTTUOVcmtlkKump:22 a=EUspDBNiAAAA:8 a=sbHou6fnXi9S1vdf29wA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=O8hF6Hzn-FEA:10 a=IoWCM6iH3mJn3m4BftBB: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=2026-08-19_04,2026-08-19_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 clxscore=1015 impostorscore=0 malwarescore=0 lowpriorityscore=0 bulkscore=0 spamscore=0 priorityscore=1501 suspectscore=0 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608190116 Received-SPF: pass client-ip=205.220.180.131; envelope-from=philmd@oss.qualcomm.com; helo=mx0b-0031df01.pphosted.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 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_LOW=-0.7, 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: qemu development 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 Invert cpu_handle_halt()'s logic to read in cpu_exec() as "if halted, try to process async events and find work; if no work, return". Rename as cpu_has_work_after_processing_async_events(). Signed-off-by: Philippe Mathieu-Daudé --- accel/tcg/cpu-exec.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/accel/tcg/cpu-exec.c b/accel/tcg/cpu-exec.c index 46b723cb734..1a942664895 100644 --- a/accel/tcg/cpu-exec.c +++ b/accel/tcg/cpu-exec.c @@ -654,18 +654,18 @@ static inline void tb_add_jump(TranslationBlock *tb, int n, } #ifndef CONFIG_USER_ONLY -static inline bool cpu_handle_halt(CPUState *cpu) +static bool cpu_has_work_after_processing_async_events(CPUState *cpu) { const TCGCPUOps *tcg_ops = cpu->cc->tcg_ops; bool leave_halt = tcg_ops->cpu_exec_halt(cpu); if (!leave_halt) { - return true; + return false; } cpu->halted = 0; /* allow execution */ - return false; + return true; } #endif /* !CONFIG_USER_ONLY */ @@ -1027,7 +1027,7 @@ int cpu_exec(CPUState *cpu) #ifndef CONFIG_USER_ONLY if (cpu->halted) { - if (cpu_handle_halt(cpu)) { + if (!cpu_has_work_after_processing_async_events(cpu)) { return EXCP_HALTED; } assert(!cpu->halted); -- 2.53.0