diff options
Diffstat (limited to 'hw/vfio/pci-quirks.c')
| -rw-r--r-- | hw/vfio/pci-quirks.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/hw/vfio/pci-quirks.c b/hw/vfio/pci-quirks.c index 6c771f778b..ec0feca376 100644 --- a/hw/vfio/pci-quirks.c +++ b/hw/vfio/pci-quirks.c @@ -1041,6 +1041,7 @@ static int igd_gen(VFIOPCIDevice *vdev) typedef struct VFIOIGDQuirk { struct VFIOPCIDevice *vdev; uint32_t index; + uint32_t bdsm; } VFIOIGDQuirk; #define IGD_GMCH 0x50 /* Graphics Control Register */ @@ -1304,7 +1305,7 @@ static void vfio_igd_quirk_data_write(void *opaque, hwaddr addr, "BIOS reserved stolen memory. Unsupported BIOS?"); } - val = base | (data & ((1 << 20) - 1)); + val = data - igd->bdsm + base; } else { val = 0; /* upper 32bits of pte, we only enable below 4G PTEs */ } @@ -1503,6 +1504,8 @@ static void vfio_probe_igd_bar4_quirk(VFIOPCIDevice *vdev, int nr) igd = quirk->data = g_malloc0(sizeof(*igd)); igd->vdev = vdev; igd->index = ~0; + igd->bdsm = vfio_pci_read_config(&vdev->pdev, IGD_BDSM, 4); + igd->bdsm &= ~((1 << 20) - 1); /* 1MB aligned */ memory_region_init_io(&quirk->mem[0], OBJECT(vdev), &vfio_igd_index_quirk, igd, "vfio-igd-index-quirk", 4); |