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Tsirkin" , qemu-arm@nongnu.org, Richard Henderson , Zhao Liu , Pierrick Bouvier Subject: [PATCH v15 25/26] whpx: arm64: add partition-wide reset on the reboot path Date: Thu, 15 Jan 2026 01:15:04 +0100 Message-ID: <20260115001505.57237-26-mohamed@unpredictable.fr> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20260115001505.57237-1-mohamed@unpredictable.fr> References: <20260115001505.57237-1-mohamed@unpredictable.fr> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Proofpoint-ORIG-GUID: ul7neQda63ds19tib5uNEVJs1L9o1M0m X-Authority-Info: v=2.4 cv=Ev/fbCcA c=1 sm=1 tr=0 ts=69683236 cx=c_apl:c_apl_out:c_pps a=qkKslKyYc0ctBTeLUVfTFg==:117 a=vUbySO9Y5rIA:10 a=VkNPw1HP01LnGYTKEx00:22 a=KKAkSRfTAAAA:8 a=h5GvOLqLgfJ3vAEETv4A:9 a=NqO74GWdXPXpGKcKHaDJD/ajO6k=:19 a=cvBusfyB2V15izCimMoJ:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMTE1MDAwMCBTYWx0ZWRfXx0EhmOpTUp2A qrYGUVnHxAYSbKVK+lDXCXPeh1rRs+8HC+v4QaAiFeEwZB6rxwojH93RrwMlTqSmp/vlAk0YLrX WzLRptCjmqFUxMUH+1O7P0WYjNUbn+ViE2CxMb1gxW0F46D5F5tPdNPvTFq0XAremzfPWPKw3AP DMiW8KhOZcFmkHRszAP1EQtK+cz8LyZFkMfYaWBX4vEXm0sbNs0U+prO59Qkp5cGoQuR3ZrofzF /RrUFffqbVRljQECI7T7z1hxNO4fddJzqOpy5cXlGHu3F5ix8GrZd+xrhMUP8jzMdNw8ZPMLp6V 5e/z5JpWXPDSuLEiO0r X-Proofpoint-GUID: ul7neQda63ds19tib5uNEVJs1L9o1M0m X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.9,FMLib:17.12.100.49 definitions=2026-01-14_07,2026-01-14_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 phishscore=0 spamscore=0 clxscore=1030 bulkscore=0 malwarescore=0 mlxlogscore=932 suspectscore=0 adultscore=0 mlxscore=0 classifier=spam authscore=0 adjust=0 reason=mlx scancount=1 engine=8.22.0-2510240001 definitions=main-2601150000 X-JNJ: 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 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 (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=57.103.74.141; envelope-from=mohamed@unpredictable.fr; helo=outbound.ms.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_H3=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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @unpredictable.fr) X-ZM-MESSAGEID: 1768436288134158500 Content-Type: text/plain; charset="utf-8" This resets non-architectural state to allow for reboots to succeed. Signed-off-by: Mohamed Mediouni Reviewed-by: Pierrick Bouvier --- include/system/whpx-internal.h | 2 ++ target/arm/whpx/whpx-all.c | 2 ++ 2 files changed, 4 insertions(+) diff --git a/include/system/whpx-internal.h b/include/system/whpx-internal.h index 8ded54a39b..ad6ade223e 100644 --- a/include/system/whpx-internal.h +++ b/include/system/whpx-internal.h @@ -86,6 +86,8 @@ void whpx_apic_get(APICCommonState *s); X(HRESULT, WHvSetVirtualProcessorInterruptControllerState2, \ (WHV_PARTITION_HANDLE Partition, UINT32 VpIndex, PVOID State, \ UINT32 StateSize)) \ + X(HRESULT, WHvResetPartition, \ + (WHV_PARTITION_HANDLE Partition)) \ =20 #define LIST_WINHVEMULATION_FUNCTIONS(X) \ X(HRESULT, WHvEmulatorCreateEmulator, (const WHV_EMULATOR_CALLBACKS* Cal= lbacks, WHV_EMULATOR_HANDLE* Emulator)) \ diff --git a/target/arm/whpx/whpx-all.c b/target/arm/whpx/whpx-all.c index def85988e7..e1611f8660 100644 --- a/target/arm/whpx/whpx-all.c +++ b/target/arm/whpx/whpx-all.c @@ -497,6 +497,8 @@ int whpx_vcpu_run(CPUState *cpu) if (arm_cpu->power_state !=3D PSCI_OFF) { whpx_psci_cpu_off(arm_cpu); } + /* Partition-wide reset, to reset state for reboots to succeed= . */ + whp_dispatch.WHvResetPartition(whpx->partition); bql_unlock(); break; case WHvRunVpExitReasonNone: --=20 2.50.1 (Apple Git-155)