| pci.c (7d3660e79830a069f1848bb4fa1cdf8f666424fb) | pci.c (aff92b828647839b956dfa647a18b3ce10058e6a) |
|---|---|
| 1/* 2 * vfio based device assignment support 3 * 4 * Copyright Red Hat, Inc. 2012 5 * 6 * Authors: 7 * Alex Williamson <alex.williamson@redhat.com> 8 * --- 2775 unchanged lines hidden (view full) --- 2784 if (strcmp(vbasedev_iter->name, vdev->vbasedev.name) == 0) { 2785 error_setg(errp, "device is already attached"); 2786 vfio_put_group(group); 2787 goto error; 2788 } 2789 } 2790 2791 /* | 1/* 2 * vfio based device assignment support 3 * 4 * Copyright Red Hat, Inc. 2012 5 * 6 * Authors: 7 * Alex Williamson <alex.williamson@redhat.com> 8 * --- 2775 unchanged lines hidden (view full) --- 2784 if (strcmp(vbasedev_iter->name, vdev->vbasedev.name) == 0) { 2785 error_setg(errp, "device is already attached"); 2786 vfio_put_group(group); 2787 goto error; 2788 } 2789 } 2790 2791 /* |
| 2792 * Mediated devices *might* operate compatibly with memory ballooning, but | 2792 * Mediated devices *might* operate compatibly with discarding of RAM, but |
| 2793 * we cannot know for certain, it depends on whether the mdev vendor driver 2794 * stays in sync with the active working set of the guest driver. Prevent 2795 * the x-balloon-allowed option unless this is minimally an mdev device. 2796 */ 2797 tmp = g_strdup_printf("%s/subsystem", vdev->vbasedev.sysfsdev); 2798 subsys = realpath(tmp, NULL); 2799 g_free(tmp); 2800 is_mdev = subsys && (strcmp(subsys, "/sys/bus/mdev") == 0); 2801 free(subsys); 2802 2803 trace_vfio_mdev(vdev->vbasedev.name, is_mdev); 2804 | 2793 * we cannot know for certain, it depends on whether the mdev vendor driver 2794 * stays in sync with the active working set of the guest driver. Prevent 2795 * the x-balloon-allowed option unless this is minimally an mdev device. 2796 */ 2797 tmp = g_strdup_printf("%s/subsystem", vdev->vbasedev.sysfsdev); 2798 subsys = realpath(tmp, NULL); 2799 g_free(tmp); 2800 is_mdev = subsys && (strcmp(subsys, "/sys/bus/mdev") == 0); 2801 free(subsys); 2802 2803 trace_vfio_mdev(vdev->vbasedev.name, is_mdev); 2804 |
| 2805 if (vdev->vbasedev.balloon_allowed && !is_mdev) { | 2805 if (vdev->vbasedev.ram_block_discard_allowed && !is_mdev) { |
| 2806 error_setg(errp, "x-balloon-allowed only potentially compatible " 2807 "with mdev devices"); 2808 vfio_put_group(group); 2809 goto error; 2810 } 2811 2812 ret = vfio_get_device(group, vdev->vbasedev.name, &vdev->vbasedev, errp); 2813 if (ret) { --- 337 unchanged lines hidden (view full) --- 3151 DEFINE_PROP_BIT("x-vga", VFIOPCIDevice, features, 3152 VFIO_FEATURE_ENABLE_VGA_BIT, false), 3153 DEFINE_PROP_BIT("x-req", VFIOPCIDevice, features, 3154 VFIO_FEATURE_ENABLE_REQ_BIT, true), 3155 DEFINE_PROP_BIT("x-igd-opregion", VFIOPCIDevice, features, 3156 VFIO_FEATURE_ENABLE_IGD_OPREGION_BIT, false), 3157 DEFINE_PROP_BOOL("x-no-mmap", VFIOPCIDevice, vbasedev.no_mmap, false), 3158 DEFINE_PROP_BOOL("x-balloon-allowed", VFIOPCIDevice, | 2806 error_setg(errp, "x-balloon-allowed only potentially compatible " 2807 "with mdev devices"); 2808 vfio_put_group(group); 2809 goto error; 2810 } 2811 2812 ret = vfio_get_device(group, vdev->vbasedev.name, &vdev->vbasedev, errp); 2813 if (ret) { --- 337 unchanged lines hidden (view full) --- 3151 DEFINE_PROP_BIT("x-vga", VFIOPCIDevice, features, 3152 VFIO_FEATURE_ENABLE_VGA_BIT, false), 3153 DEFINE_PROP_BIT("x-req", VFIOPCIDevice, features, 3154 VFIO_FEATURE_ENABLE_REQ_BIT, true), 3155 DEFINE_PROP_BIT("x-igd-opregion", VFIOPCIDevice, features, 3156 VFIO_FEATURE_ENABLE_IGD_OPREGION_BIT, false), 3157 DEFINE_PROP_BOOL("x-no-mmap", VFIOPCIDevice, vbasedev.no_mmap, false), 3158 DEFINE_PROP_BOOL("x-balloon-allowed", VFIOPCIDevice, |
| 3159 vbasedev.balloon_allowed, false), | 3159 vbasedev.ram_block_discard_allowed, false), |
| 3160 DEFINE_PROP_BOOL("x-no-kvm-intx", VFIOPCIDevice, no_kvm_intx, false), 3161 DEFINE_PROP_BOOL("x-no-kvm-msi", VFIOPCIDevice, no_kvm_msi, false), 3162 DEFINE_PROP_BOOL("x-no-kvm-msix", VFIOPCIDevice, no_kvm_msix, false), 3163 DEFINE_PROP_BOOL("x-no-geforce-quirks", VFIOPCIDevice, 3164 no_geforce_quirks, false), 3165 DEFINE_PROP_BOOL("x-no-kvm-ioeventfd", VFIOPCIDevice, no_kvm_ioeventfd, 3166 false), 3167 DEFINE_PROP_BOOL("x-no-vfio-ioeventfd", VFIOPCIDevice, no_vfio_ioeventfd, --- 77 unchanged lines hidden --- | 3160 DEFINE_PROP_BOOL("x-no-kvm-intx", VFIOPCIDevice, no_kvm_intx, false), 3161 DEFINE_PROP_BOOL("x-no-kvm-msi", VFIOPCIDevice, no_kvm_msi, false), 3162 DEFINE_PROP_BOOL("x-no-kvm-msix", VFIOPCIDevice, no_kvm_msix, false), 3163 DEFINE_PROP_BOOL("x-no-geforce-quirks", VFIOPCIDevice, 3164 no_geforce_quirks, false), 3165 DEFINE_PROP_BOOL("x-no-kvm-ioeventfd", VFIOPCIDevice, no_kvm_ioeventfd, 3166 false), 3167 DEFINE_PROP_BOOL("x-no-vfio-ioeventfd", VFIOPCIDevice, no_vfio_ioeventfd, --- 77 unchanged lines hidden --- |