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Tsirkin" , Cameron Esfahani , Ani Sinha , Paolo Bonzini , Roman Bolshakov , Shannon Zhao , Phil Dennis-Jordan , Igor Mammedov , qemu-arm@nongnu.org, Mohamed Mediouni Subject: [PATCH v4 03/15] target/arm: hvf: add asserts for code paths not leveraged when using the vGIC Date: Mon, 28 Jul 2025 07:56:49 +0200 Message-Id: <20250728055701.38975-4-mohamed@unpredictable.fr> X-Mailer: git-send-email 2.39.5 (Apple Git-154) In-Reply-To: <20250728055701.38975-1-mohamed@unpredictable.fr> References: <20250728055701.38975-1-mohamed@unpredictable.fr> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNzI4MDA0MyBTYWx0ZWRfX0cIN9ajzFdPl VkA01/5hKeVtgjtyUHa5ouCWR9XHWRriNUNAHfX82gjKOujo+f30D16E1uf7Kj5ppVDCG5phXs8 l9LZQ1AyU6utUYxBKgGEtSREvzDHbJDxldSGlj3tNU5/Pod8fg6VHsvVR7nZCb2xAJJdgHKVcLs vz2HCCkmKZY/cvZ+DPnxHZd9/svq14d6+cp9oELTIT3MVHz9wR97V4Iy+qBBndVM4CXQbN4k8Hd /wJ4cPAm3Tobt2vz5qX526ZT8wXPhIfqZsEGOzp6jFjrjAe7755DZ7PVMp+nqrJdw5wXIkpKI= X-Proofpoint-ORIG-GUID: GdMFnko3xMRG9On8d_xqRPmUrFljSfjf X-Proofpoint-GUID: GdMFnko3xMRG9On8d_xqRPmUrFljSfjf X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-07-28_02,2025-07-24_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxscore=0 clxscore=1030 bulkscore=0 adultscore=0 mlxlogscore=610 suspectscore=0 spamscore=0 phishscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.22.0-2506270000 definitions=main-2507280043 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=57.103.85.135; envelope-from=mohamed@unpredictable.fr; helo=outbound.qs.icloud.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_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, 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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @unpredictable.fr) X-ZM-MESSAGEID: 1753682700953116600 Content-Type: text/plain; charset="utf-8" When using the vGIC, timers are directly handled by the platform. No vmexits ought to happen in that case. Abort if reaching those code paths. Signed-off-by: Mohamed Mediouni --- target/arm/hvf/hvf.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/target/arm/hvf/hvf.c b/target/arm/hvf/hvf.c index 3ba74b8daa..7beb47caad 100644 --- a/target/arm/hvf/hvf.c +++ b/target/arm/hvf/hvf.c @@ -1382,6 +1382,9 @@ static int hvf_sysreg_read(CPUState *cpu, uint32_t re= g, uint64_t *val) case SYSREG_ICC_SGI1R_EL1: case SYSREG_ICC_SRE_EL1: case SYSREG_ICC_CTLR_EL1: + if (hvf_irqchip_in_kernel()) { + abort(); + } /* Call the TCG sysreg handler. This is only safe for GICv3 regs. = */ if (hvf_sysreg_read_cp(cpu, reg, val)) { return 0; @@ -1702,6 +1705,9 @@ static int hvf_sysreg_write(CPUState *cpu, uint32_t r= eg, uint64_t val) case SYSREG_ICC_SGI0R_EL1: case SYSREG_ICC_SGI1R_EL1: case SYSREG_ICC_SRE_EL1: + if (hvf_irqchip_in_kernel()) { + abort(); + } /* Call the TCG sysreg handler. This is only safe for GICv3 regs. = */ if (hvf_sysreg_write_cp(cpu, reg, val)) { return 0; @@ -1965,6 +1971,10 @@ int hvf_vcpu_exec(CPUState *cpu) /* This is the main one, handle below. */ break; case HV_EXIT_REASON_VTIMER_ACTIVATED: + /* This is only for when a user-mode irqchip is used. */ + if (hvf_irqchip_in_kernel()) { + assert("vtimer activated vmexit when using platform GIC"); + } qemu_set_irq(arm_cpu->gt_timer_outputs[GTIMER_VIRT], 1); cpu->accel->vtimer_masked =3D true; return 0; --=20 2.39.5 (Apple Git-154)