[v5] whpx: x86 updates (2026-02)

[PATCH v5 27/27] whpx: i386: ignore send_msi to interrupt vector 0

Mohamed Mediouni posted 27 patches 1 month, 2 weeks ago

Diff against v1 v2 v3 v4 v6
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Maintainers: Pedro Barbuda <pbarbuda@microsoft.com>, Mohamed Mediouni <mohamed@unpredictable.fr>, Paolo Bonzini <pbonzini@redhat.com>, "Marc-André Lureau" <marcandre.lureau@redhat.com>, "Daniel P. Berrangé" <berrange@redhat.com>, "Philippe Mathieu-Daudé" <philmd@linaro.org>, Peter Maydell <peter.maydell@linaro.org>, Zhao Liu <zhao1.liu@intel.com>, Cameron Esfahani <dirty@apple.com>, Roman Bolshakov <rbolshakov@ddn.com>, Phil Dennis-Jordan <phil@philjordan.eu>, Wei Liu <wei.liu@kernel.org>, Magnus Kulke <magnus.kulke@linux.microsoft.com>

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[PATCH v5 27/27] whpx: i386: ignore send_msi to interrupt vector 0

Posted by Mohamed Mediouni 1 month, 2 weeks ago

Signed-off-by: Mohamed Mediouni <mohamed@unpredictable.fr>
---
 target/i386/whpx/whpx-apic.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/target/i386/whpx/whpx-apic.c b/target/i386/whpx/whpx-apic.c
index b934fdcbe1..f26ecaf6e8 100644
--- a/target/i386/whpx/whpx-apic.c
+++ b/target/i386/whpx/whpx-apic.c
@@ -192,6 +192,11 @@ static void whpx_send_msi(MSIMessage *msg)
     uint8_t trigger_mode = (data >> MSI_DATA_TRIGGER_SHIFT) & 0x1;
     uint8_t delivery = (data >> MSI_DATA_DELIVERY_MODE_SHIFT) & 0x7;
 
+    if (vector == 0) {
+        warn_report("Ignoring request for interrupt vector 0");
+        return;
+    }
+
     WHV_INTERRUPT_CONTROL interrupt = {
         /* Values correspond to delivery modes */
         .Type = delivery,
-- 
2.50.1 (Apple Git-155)