[PATCH v10 28/28] whpx: arm64: add partition-wide reset on the reboot path

[Mohamed Mediouni]

This resets non-architectural state to allow for reboots to succeed.

Signed-off-by: Mohamed Mediouni <moha...@unpredictable.fr>
---
 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 90b4077b76..40918c025f 100644
--- a/include/system/whpx-internal.h
+++ b/include/system/whpx-internal.h
@@ -94,6 +94,8 @@ void whpx_apic_get(APICCommonState *s);
         (WHV_PARTITION_HANDLE Partition, UINT32 VpIndex, \
         WHV_VIRTUAL_PROCESSOR_STATE_TYPE StateType, PVOID Buffer, \
         UINT32 BufferSizeInBytes)) \
+  X(HRESULT, WHvResetPartition, \
+        (WHV_PARTITION_HANDLE Partition)) \
 
 
 #define LIST_WINHVEMULATION_FUNCTIONS(X) \
diff --git a/target/arm/whpx/whpx-all.c b/target/arm/whpx/whpx-all.c
index ce1794952c..c558ab8613 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 != 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:
-- 
2.50.1 (Apple Git-155)