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Wed, 15 Apr 2026 13:29:35 +0000 (UTC) From: Mohamed Mediouni To: qemu-devel@nongnu.org Cc: Mohamed Mediouni , Zhao Liu , Paolo Bonzini , Pedro Barbuda Subject: [PATCH v2 04/10] whpx: i386: tighten APIC base validity check Date: Wed, 15 Apr 2026 15:29:20 +0200 Message-ID: <20260415132926.58878-5-mohamed@unpredictable.fr> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20260415132926.58878-1-mohamed@unpredictable.fr> References: <20260415132926.58878-1-mohamed@unpredictable.fr> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Proofpoint-ORIG-GUID: _zBtD9wD8v6gs7VaIe4pV-ihNDJNy2fB X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNDE1MDEyNSBTYWx0ZWRfX2CI4k9tc1sDu Dq48e+Bk++t20P/pkBf3jwzBzBxDbmk7rWP7PbGQ86XFk5/qGnq49gTUQln11JacYoMasVyz9Do Tkz4brFD6Py05tqwVS9qAaG7rI8WaPJS/IF+C30zWBdt/06voPivJlB+pq5XUXwuWgkZ2DupEOL kMt+JZjpQ1P5Drobwdde0q41RHUGwT6p5jf6CIJ/doNtd1JVq/Gzodu9OItOVVu7MKVrb5iL+Us S11AFNBArqruT88frO+vn4oOEdVMVKZOxFhenyjam89NGs/WU6UQ/wYz7BF90y1jnMwXXX6aoHS rC+rq93DEG8MZEiu9upaRQthfdRQ4ufxPnDJE8ui0oydKGmCZ1lfVWStxCrGkM= X-Authority-Info-Out: v=2.4 cv=Cu2ys34D c=1 sm=1 tr=0 ts=69df92c0 cx=c_apl:c_pps:t_out a=azHRBMxVc17uSn+fyuI/eg==:117 a=azHRBMxVc17uSn+fyuI/eg==:17 a=A5OVakUREuEA:10 a=VkNPw1HP01LnGYTKEx00:22 a=uh2sygq7LFHjsVUyvz4A:9 X-Proofpoint-GUID: _zBtD9wD8v6gs7VaIe4pV-ihNDJNy2fB Received-SPF: pass client-ip=57.103.64.231; envelope-from=mohamed@unpredictable.fr; helo=outbound.pv.icloud.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, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_PASS=-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 Signed-off-by: Mohamed Mediouni --- target/i386/whpx/whpx-all.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/target/i386/whpx/whpx-all.c b/target/i386/whpx/whpx-all.c index 73066581d4..6c39168b06 100644 --- a/target/i386/whpx/whpx-all.c +++ b/target/i386/whpx/whpx-all.c @@ -1993,6 +1993,9 @@ int whpx_vcpu_run(CPUState *cpu) if (vcpu->exit_ctx.MsrAccess.MsrNumber == MSR_IA32_APICBASE) { is_known_msr = 1; + if (val & MSR_IA32_APICBASE_RESERVED) { + x86_emul_raise_exception(&X86_CPU(cpu)->env, EXCP0D_GPF, 0); + } if (!vcpu->exit_ctx.MsrAccess.AccessInfo.IsWrite) { /* Read path unreachable on Hyper-V */ abort(); -- 2.50.1 (Apple Git-155)