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Mon, 27 Oct 2025 23:03:21 -0700 (PDT) From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Cc: Mads Ynddal , Cameron Esfahani , qemu-arm@nongnu.org, Roman Bolshakov , Akihiko Odaki , Phil Dennis-Jordan , Mohamed Mediouni , Peter Collingbourne , Peter Maydell , Alexander Graf , Richard Henderson , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Subject: [PATCH v3 29/59] target/arm/hvf/hvf: Document $pc adjustment in HVF & SMC Date: Tue, 28 Oct 2025 06:42:05 +0100 Message-ID: <20251028054238.14949-30-philmd@linaro.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20251028054238.14949-1-philmd@linaro.org> References: <20251028054238.14949-1-philmd@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable 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=2a00:1450:4864:20::32c; envelope-from=philmd@linaro.org; helo=mail-wm1-x32c.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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1761631431759154100 Signed-off-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Richard Henderson --- target/arm/hvf/hvf.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/target/arm/hvf/hvf.c b/target/arm/hvf/hvf.c index f31b6e54ee7..805fe75e6b1 100644 --- a/target/arm/hvf/hvf.c +++ b/target/arm/hvf/hvf.c @@ -1936,6 +1936,7 @@ static int hvf_handle_exception(CPUState *cpu, hv_vcp= u_exit_exception_t *excp) case EC_AA64_HVC: cpu_synchronize_state(cpu); if (arm_is_psci_call(arm_cpu, EXCP_HVC)) { + /* Do NOT advance $pc for HVC */ if (!hvf_handle_psci_call(cpu)) { trace_hvf_unknown_hvc(env->pc, env->xregs[0]); /* SMCCC 1.3 section 5.2 says every unknown SMCCC call ret= urns -1 */ @@ -1949,6 +1950,7 @@ static int hvf_handle_exception(CPUState *cpu, hv_vcp= u_exit_exception_t *excp) case EC_AA64_SMC: cpu_synchronize_state(cpu); if (arm_is_psci_call(arm_cpu, EXCP_SMC)) { + /* Secure Monitor Call exception, we need to advance $pc */ advance_pc =3D true; =20 if (!hvf_handle_psci_call(cpu)) { --=20 2.51.0