From: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Date: Wed, 18 Mar 2026 17:47:30 +0000 (-0700)
Subject: hw/vfio/pci.c: eradicate CONFIG_KVM
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4e365e7d2a212580e7c17ee5a784db792b9d752d;p=thirdparty%2Fqemu.git

hw/vfio/pci.c: eradicate CONFIG_KVM

We just need to add kvm_enabled() guard when calling concerned
functions, but no need to extract those kvm functions since they are not
using any kvm specific types that would not be visible at compilation
time.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Tested-by: Cédric Le Goater <clg@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Link: https://lore.kernel.org/qemu-devel/20260318174733.1717643-6-pierrick.bouvier@linaro.org
Signed-off-by: Cédric Le Goater <clg@redhat.com>
---

diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c
index 1f1f3aaad9a..b2a07f6bb42 100644
--- a/hw/vfio/pci.c
+++ b/hw/vfio/pci.c
@@ -152,7 +152,6 @@ void vfio_pci_intx_eoi(VFIODevice *vbasedev)
 
 static bool vfio_intx_enable_kvm(VFIOPCIDevice *vdev, Error **errp)
 {
-#ifdef CONFIG_KVM
     PCIDevice *pdev = PCI_DEVICE(vdev);
     int irq_fd = event_notifier_get_fd(&vdev->intx.interrupt);
 
@@ -206,14 +205,10 @@ fail:
     qemu_set_fd_handler(irq_fd, vfio_intx_interrupt, NULL, vdev);
     vfio_device_irq_unmask(&vdev->vbasedev, VFIO_PCI_INTX_IRQ_INDEX);
     return false;
-#else
-    return true;
-#endif
 }
 
 static bool vfio_cpr_intx_enable_kvm(VFIOPCIDevice *vdev, Error **errp)
 {
-#ifdef CONFIG_KVM
     if (vdev->no_kvm_intx || !kvm_irqfds_enabled() ||
         vdev->intx.route.mode != PCI_INTX_ENABLED ||
         !kvm_resamplefds_enabled()) {
@@ -236,14 +231,10 @@ static bool vfio_cpr_intx_enable_kvm(VFIOPCIDevice *vdev, Error **errp)
     vdev->intx.kvm_accel = true;
     trace_vfio_intx_enable_kvm(vdev->vbasedev.name);
     return true;
-#else
-    return true;
-#endif
 }
 
 static void vfio_intx_disable_kvm(VFIOPCIDevice *vdev)
 {
-#ifdef CONFIG_KVM
     PCIDevice *pdev = PCI_DEVICE(vdev);
 
     if (!vdev->intx.kvm_accel) {
@@ -277,7 +268,6 @@ static void vfio_intx_disable_kvm(VFIOPCIDevice *vdev)
     vfio_device_irq_unmask(&vdev->vbasedev, VFIO_PCI_INTX_IRQ_INDEX);
 
     trace_vfio_intx_disable_kvm(vdev->vbasedev.name);
-#endif
 }
 
 static void vfio_intx_update(VFIOPCIDevice *vdev, PCIINTxRoute *route)
@@ -287,7 +277,9 @@ static void vfio_intx_update(VFIOPCIDevice *vdev, PCIINTxRoute *route)
     trace_vfio_intx_update(vdev->vbasedev.name,
                            vdev->intx.route.irq, route->irq);
 
-    vfio_intx_disable_kvm(vdev);
+    if (kvm_enabled()) {
+        vfio_intx_disable_kvm(vdev);
+    }
 
     vdev->intx.route = *route;
 
@@ -295,7 +287,7 @@ static void vfio_intx_update(VFIOPCIDevice *vdev, PCIINTxRoute *route)
         return;
     }
 
-    if (!vfio_intx_enable_kvm(vdev, &err)) {
+    if (kvm_enabled() && !vfio_intx_enable_kvm(vdev, &err)) {
         warn_reportf_err(err, VFIO_MSG_PREFIX, vdev->vbasedev.name);
     }
 
@@ -350,16 +342,14 @@ static bool vfio_intx_enable(VFIOPCIDevice *vdev, Error **errp)
     vdev->intx.pin = pin - 1; /* Pin A (1) -> irq[0] */
     pci_config_set_interrupt_pin(pdev->config, pin);
 
-#ifdef CONFIG_KVM
     /*
      * Only conditional to avoid generating error messages on platforms
      * where we won't actually use the result anyway.
      */
-    if (kvm_irqfds_enabled() && kvm_resamplefds_enabled()) {
+    if (kvm_enabled() && kvm_irqfds_enabled() && kvm_resamplefds_enabled()) {
         vdev->intx.route = pci_device_route_intx_to_irq(pdev,
                                                         vdev->intx.pin);
     }
-#endif
 
     if (!vfio_notifier_init(vdev, &vdev->intx.interrupt, "intx-interrupt", 0,
                             errp)) {
@@ -370,7 +360,7 @@ static bool vfio_intx_enable(VFIOPCIDevice *vdev, Error **errp)
 
 
     if (cpr_is_incoming()) {
-        if (!vfio_cpr_intx_enable_kvm(vdev, &err)) {
+        if (kvm_enabled() && !vfio_cpr_intx_enable_kvm(vdev, &err)) {
             warn_reportf_err(err, VFIO_MSG_PREFIX, vdev->vbasedev.name);
         }
         goto skip_signaling;
@@ -383,7 +373,7 @@ static bool vfio_intx_enable(VFIOPCIDevice *vdev, Error **errp)
         return false;
     }
 
-    if (!vfio_intx_enable_kvm(vdev, &err)) {
+    if (kvm_enabled() && !vfio_intx_enable_kvm(vdev, &err)) {
         warn_reportf_err(err, VFIO_MSG_PREFIX, vdev->vbasedev.name);
     }
 
@@ -400,7 +390,9 @@ static void vfio_intx_disable(VFIOPCIDevice *vdev)
     int fd;
 
     timer_del(vdev->intx.mmap_timer);
-    vfio_intx_disable_kvm(vdev);
+    if (kvm_enabled()) {
+        vfio_intx_disable_kvm(vdev);
+    }
     vfio_device_irq_disable(&vdev->vbasedev, VFIO_PCI_INTX_IRQ_INDEX);
     vdev->intx.pending = false;
     pci_irq_deassert(pdev);