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Tsirkin" , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , Cameron Esfahani , =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= , Ani Sinha , Yanan Wang , Eduardo Habkost , Paolo Bonzini , Pierrick Bouvier , Shannon Zhao , Alexander Graf , Phil Dennis-Jordan , Pedro Barbuda Subject: [PATCH v20 22/22] whpx: arm64: add partition-wide reset on the reboot path Date: Thu, 5 Feb 2026 14:11:51 +0100 Message-ID: <20260205131155.22780-23-mohamed@unpredictable.fr> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20260205131155.22780-1-mohamed@unpredictable.fr> References: <20260205131155.22780-1-mohamed@unpredictable.fr> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Authority-Info-Out: v=2.4 cv=Pf3yRyhd c=1 sm=1 tr=0 ts=69849789 cx=c_apl:c_apl_out:c_pps a=9OgfyREA4BUYbbCgc0Y0oA==:117 a=9OgfyREA4BUYbbCgc0Y0oA==:17 a=HzLeVaNsDn8A:10 a=VkNPw1HP01LnGYTKEx00:22 a=KKAkSRfTAAAA:8 a=h5GvOLqLgfJ3vAEETv4A:9 a=NqO74GWdXPXpGKcKHaDJD/ajO6k=:19 a=cvBusfyB2V15izCimMoJ:22 X-Proofpoint-ORIG-GUID: c-VNL5zGSVrE7PXUqhK5lsLxqJIercCs X-Proofpoint-GUID: c-VNL5zGSVrE7PXUqhK5lsLxqJIercCs X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMjA1MDA5OCBTYWx0ZWRfX2W/8YM0kRGVq NPzhzXsxvNe4hiD4iI5ICdnf72x5060ZeJ3qvwukxPBEZ1JfpJLIBFc5BZNm0vwJ/WNIZH04STN 1MEyy2nD0b2ljm1NMO8amNIJicDDZ3iu2CSkI/j1lDYLOiXRSlV3gT+NLasq9pSMFc3z3mXoYZm I6w/ZvdB0RvzT4mQWvrGmR89VkWuraMIboZ98D6JOCsPUfgZbt1iAh0rVwUxBCKT8KJd0fnggCQ JIbyFd0ntIrcfTR3xtHj4I7+ar8hfvfLiMjHtsyHZiAqiV7opvIzzO9410d0KO5jy1ExReEsc8Q bHLS1tvibt0Py41Uz11Vyxy65FOASPjfgzosd+qjx848OSLyzczaG2G8DlYKGw= X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-02-05_02,2026-02-05_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 phishscore=0 suspectscore=0 mlxscore=0 mlxlogscore=999 bulkscore=0 adultscore=0 clxscore=1030 spamscore=0 lowpriorityscore=0 malwarescore=0 classifier=spam authscore=0 adjust=0 reason=mlx scancount=1 engine=8.22.0-2601150000 definitions=main-2602050098 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 client-ip=57.103.68.99; envelope-from=mohamed@unpredictable.fr; helo=outbound.mr.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_PASS=-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: 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: 1770297256111158500 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 Reviewed-by: Akihiko Odaki --- 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 44ef42307b..36c5e30a03 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)