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Mon, 25 Nov 2024 11:59:32 -0800 (PST) From: Jean-Philippe Brucker To: peter.maydell@linaro.org Cc: richard.henderson@linaro.org, philmd@linaro.org, qemu-arm@nongnu.org, qemu-devel@nongnu.org, alex.bennee@linaro.org, Jean-Philippe Brucker Subject: [PATCH v3 14/26] target/arm/cpu: Inform about reading confidential CPU registers Date: Mon, 25 Nov 2024 19:56:13 +0000 Message-ID: <20241125195626.856992-16-jean-philippe@linaro.org> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20241125195626.856992-2-jean-philippe@linaro.org> References: <20241125195626.856992-2-jean-philippe@linaro.org> MIME-Version: 1.0 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::436; envelope-from=jean-philippe@linaro.org; helo=mail-wr1-x436.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=unavailable 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: 1732565083967019100 Content-Type: text/plain; charset="utf-8" The host cannot access registers of a Realm. Instead of showing all registers as zero in "info registers", display a message about this restriction. Signed-off-by: Jean-Philippe Brucker --- target/arm/cpu.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/target/arm/cpu.c b/target/arm/cpu.c index 6938161b95..7f6569e87e 100644 --- a/target/arm/cpu.c +++ b/target/arm/cpu.c @@ -1232,6 +1232,11 @@ static void aarch64_cpu_dump_state(CPUState *cs, FIL= E *f, int flags) const char *ns_status; bool sve; =20 + if (cpu->kvm_rme) { + qemu_fprintf(f, "the CPU registers are confidential to the realm\n= "); + return; + } + qemu_fprintf(f, " PC=3D%016" PRIx64 " ", env->pc); for (i =3D 0; i < 32; i++) { if (i =3D=3D 31) { --=20 2.47.0