From: Paolo Bonzini <pbonzini@redhat.com>

Similar to what commit df32e5c5 did for TCG; fixes boot with multiple
processors on WHPX and probably more accelerators

Fixes: df32e5c568c ("i386/cpu: Prevent delivering SIPI during SMM in TCG mode", 2025-10-14)
Fixes: 1e8a7c403a7 ("i386/cpu: Prevent delivering SIPI during SMM in TCG mode", in 10.0.x)
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/3178
Cc: qemu-stable@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
(cherry picked from commit d5e1d2dea11b803ba9121fc12d3c1662b79ad941)
(Mjt: context fix due to missing v10.1.0-119-g87511341c30d
 "add cpu_test_interrupt()/cpu_set_interrupt() helpers and use them tree wide")
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>

diff --git a/target/i386/hvf/x86hvf.c b/target/i386/hvf/x86hvf.c
index 531a340b37..caebd64da1 100644
--- a/target/i386/hvf/x86hvf.c
+++ b/target/i386/hvf/x86hvf.c
@@ -447,6 +447,7 @@ int hvf_process_events(CPUState *cs)
         cs->halted = 0;
     }
     if (cs->interrupt_request & CPU_INTERRUPT_SIPI) {
+        cpu_reset_interrupt(cs, CPU_INTERRUPT_SIPI);
         cpu_synchronize_state(cs);
         do_cpu_sipi(cpu);
     }
diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c
index f251286eb3..e77fb752c2 100644
--- a/target/i386/kvm/kvm.c
+++ b/target/i386/kvm/kvm.c
@@ -5637,6 +5637,7 @@ int kvm_arch_process_async_events(CPUState *cs)
         cs->halted = 0;
     }
     if (cs->interrupt_request & CPU_INTERRUPT_SIPI) {
+        cpu_reset_interrupt(cs, CPU_INTERRUPT_SIPI);
         kvm_cpu_synchronize_state(cs);
         do_cpu_sipi(cpu);
     }
diff --git a/target/i386/nvmm/nvmm-all.c b/target/i386/nvmm/nvmm-all.c
index 04e5f7e637..396c59661d 100644
--- a/target/i386/nvmm/nvmm-all.c
+++ b/target/i386/nvmm/nvmm-all.c
@@ -704,6 +704,7 @@ nvmm_vcpu_loop(CPUState *cpu)
         cpu->halted = false;
     }
     if (cpu->interrupt_request & CPU_INTERRUPT_SIPI) {
+        cpu_reset_interrupt(cpu, CPU_INTERRUPT_SIPI);
         nvmm_cpu_synchronize_state(cpu);
         do_cpu_sipi(x86_cpu);
     }
diff --git a/target/i386/whpx/whpx-all.c b/target/i386/whpx/whpx-all.c
index 41fb8c5a4e..7a95198dc4 100644
--- a/target/i386/whpx/whpx-all.c
+++ b/target/i386/whpx/whpx-all.c
@@ -1624,6 +1624,7 @@ static void whpx_vcpu_process_async_events(CPUState *cpu)
     }
 
     if (cpu->interrupt_request & CPU_INTERRUPT_SIPI) {
+        cpu_reset_interrupt(cpu, CPU_INTERRUPT_SIPI);
         whpx_cpu_synchronize_state(cpu);
         do_cpu_sipi(x86_cpu);
     }
-- 
2.47.3