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-rw-r--r--drivers/vfio/pci/vfio_pci.c11
-rw-r--r--drivers/vfio/pci/vfio_pci_config.c32
-rw-r--r--drivers/vfio/pci/vfio_pci_private.h4
-rw-r--r--drivers/vfio/vfio.c39
-rw-r--r--drivers/vfio/vfio_iommu_type1.c2
5 files changed, 30 insertions, 58 deletions
diff --git a/drivers/vfio/pci/vfio_pci.c b/drivers/vfio/pci/vfio_pci.c
index 02206162eaa9..379a02c36e37 100644
--- a/drivers/vfio/pci/vfio_pci.c
+++ b/drivers/vfio/pci/vfio_pci.c
@@ -110,13 +110,15 @@ static inline bool vfio_pci_is_vga(struct pci_dev *pdev)
static void vfio_pci_probe_mmaps(struct vfio_pci_device *vdev)
{
struct resource *res;
- int bar;
+ int i;
struct vfio_pci_dummy_resource *dummy_res;
INIT_LIST_HEAD(&vdev->dummy_resources_list);
- for (bar = PCI_STD_RESOURCES; bar <= PCI_STD_RESOURCE_END; bar++) {
- res = vdev->pdev->resource + bar;
+ for (i = 0; i < PCI_STD_NUM_BARS; i++) {
+ int bar = i + PCI_STD_RESOURCES;
+
+ res = &vdev->pdev->resource[bar];
if (!IS_ENABLED(CONFIG_VFIO_PCI_MMAP))
goto no_mmap;
@@ -399,7 +401,8 @@ static void vfio_pci_disable(struct vfio_pci_device *vdev)
vfio_config_free(vdev);
- for (bar = PCI_STD_RESOURCES; bar <= PCI_STD_RESOURCE_END; bar++) {
+ for (i = 0; i < PCI_STD_NUM_BARS; i++) {
+ bar = i + PCI_STD_RESOURCES;
if (!vdev->barmap[bar])
continue;
pci_iounmap(pdev, vdev->barmap[bar]);
diff --git a/drivers/vfio/pci/vfio_pci_config.c b/drivers/vfio/pci/vfio_pci_config.c
index f0891bd8444c..90c0b80f8acf 100644
--- a/drivers/vfio/pci/vfio_pci_config.c
+++ b/drivers/vfio/pci/vfio_pci_config.c
@@ -450,30 +450,32 @@ static void vfio_bar_fixup(struct vfio_pci_device *vdev)
{
struct pci_dev *pdev = vdev->pdev;
int i;
- __le32 *bar;
+ __le32 *vbar;
u64 mask;
- bar = (__le32 *)&vdev->vconfig[PCI_BASE_ADDRESS_0];
+ vbar = (__le32 *)&vdev->vconfig[PCI_BASE_ADDRESS_0];
- for (i = PCI_STD_RESOURCES; i <= PCI_STD_RESOURCE_END; i++, bar++) {
- if (!pci_resource_start(pdev, i)) {
- *bar = 0; /* Unmapped by host = unimplemented to user */
+ for (i = 0; i < PCI_STD_NUM_BARS; i++, vbar++) {
+ int bar = i + PCI_STD_RESOURCES;
+
+ if (!pci_resource_start(pdev, bar)) {
+ *vbar = 0; /* Unmapped by host = unimplemented to user */
continue;
}
- mask = ~(pci_resource_len(pdev, i) - 1);
+ mask = ~(pci_resource_len(pdev, bar) - 1);
- *bar &= cpu_to_le32((u32)mask);
- *bar |= vfio_generate_bar_flags(pdev, i);
+ *vbar &= cpu_to_le32((u32)mask);
+ *vbar |= vfio_generate_bar_flags(pdev, bar);
- if (*bar & cpu_to_le32(PCI_BASE_ADDRESS_MEM_TYPE_64)) {
- bar++;
- *bar &= cpu_to_le32((u32)(mask >> 32));
+ if (*vbar & cpu_to_le32(PCI_BASE_ADDRESS_MEM_TYPE_64)) {
+ vbar++;
+ *vbar &= cpu_to_le32((u32)(mask >> 32));
i++;
}
}
- bar = (__le32 *)&vdev->vconfig[PCI_ROM_ADDRESS];
+ vbar = (__le32 *)&vdev->vconfig[PCI_ROM_ADDRESS];
/*
* NB. REGION_INFO will have reported zero size if we weren't able
@@ -483,14 +485,14 @@ static void vfio_bar_fixup(struct vfio_pci_device *vdev)
if (pci_resource_start(pdev, PCI_ROM_RESOURCE)) {
mask = ~(pci_resource_len(pdev, PCI_ROM_RESOURCE) - 1);
mask |= PCI_ROM_ADDRESS_ENABLE;
- *bar &= cpu_to_le32((u32)mask);
+ *vbar &= cpu_to_le32((u32)mask);
} else if (pdev->resource[PCI_ROM_RESOURCE].flags &
IORESOURCE_ROM_SHADOW) {
mask = ~(0x20000 - 1);
mask |= PCI_ROM_ADDRESS_ENABLE;
- *bar &= cpu_to_le32((u32)mask);
+ *vbar &= cpu_to_le32((u32)mask);
} else
- *bar = 0;
+ *vbar = 0;
vdev->bardirty = false;
}
diff --git a/drivers/vfio/pci/vfio_pci_private.h b/drivers/vfio/pci/vfio_pci_private.h
index ee6ee91718a4..8a2c7607d513 100644
--- a/drivers/vfio/pci/vfio_pci_private.h
+++ b/drivers/vfio/pci/vfio_pci_private.h
@@ -86,8 +86,8 @@ struct vfio_pci_reflck {
struct vfio_pci_device {
struct pci_dev *pdev;
- void __iomem *barmap[PCI_STD_RESOURCE_END + 1];
- bool bar_mmap_supported[PCI_STD_RESOURCE_END + 1];
+ void __iomem *barmap[PCI_STD_NUM_BARS];
+ bool bar_mmap_supported[PCI_STD_NUM_BARS];
u8 *pci_config_map;
u8 *vconfig;
struct perm_bits *msi_perm;
diff --git a/drivers/vfio/vfio.c b/drivers/vfio/vfio.c
index 388597930b64..c8482624ca34 100644
--- a/drivers/vfio/vfio.c
+++ b/drivers/vfio/vfio.c
@@ -1184,15 +1184,6 @@ static long vfio_fops_unl_ioctl(struct file *filep,
return ret;
}
-#ifdef CONFIG_COMPAT
-static long vfio_fops_compat_ioctl(struct file *filep,
- unsigned int cmd, unsigned long arg)
-{
- arg = (unsigned long)compat_ptr(arg);
- return vfio_fops_unl_ioctl(filep, cmd, arg);
-}
-#endif /* CONFIG_COMPAT */
-
static int vfio_fops_open(struct inode *inode, struct file *filep)
{
struct vfio_container *container;
@@ -1275,9 +1266,7 @@ static const struct file_operations vfio_fops = {
.read = vfio_fops_read,
.write = vfio_fops_write,
.unlocked_ioctl = vfio_fops_unl_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = vfio_fops_compat_ioctl,
-#endif
+ .compat_ioctl = compat_ptr_ioctl,
.mmap = vfio_fops_mmap,
};
@@ -1556,15 +1545,6 @@ static long vfio_group_fops_unl_ioctl(struct file *filep,
return ret;
}
-#ifdef CONFIG_COMPAT
-static long vfio_group_fops_compat_ioctl(struct file *filep,
- unsigned int cmd, unsigned long arg)
-{
- arg = (unsigned long)compat_ptr(arg);
- return vfio_group_fops_unl_ioctl(filep, cmd, arg);
-}
-#endif /* CONFIG_COMPAT */
-
static int vfio_group_fops_open(struct inode *inode, struct file *filep)
{
struct vfio_group *group;
@@ -1620,9 +1600,7 @@ static int vfio_group_fops_release(struct inode *inode, struct file *filep)
static const struct file_operations vfio_group_fops = {
.owner = THIS_MODULE,
.unlocked_ioctl = vfio_group_fops_unl_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = vfio_group_fops_compat_ioctl,
-#endif
+ .compat_ioctl = compat_ptr_ioctl,
.open = vfio_group_fops_open,
.release = vfio_group_fops_release,
};
@@ -1687,24 +1665,13 @@ static int vfio_device_fops_mmap(struct file *filep, struct vm_area_struct *vma)
return device->ops->mmap(device->device_data, vma);
}
-#ifdef CONFIG_COMPAT
-static long vfio_device_fops_compat_ioctl(struct file *filep,
- unsigned int cmd, unsigned long arg)
-{
- arg = (unsigned long)compat_ptr(arg);
- return vfio_device_fops_unl_ioctl(filep, cmd, arg);
-}
-#endif /* CONFIG_COMPAT */
-
static const struct file_operations vfio_device_fops = {
.owner = THIS_MODULE,
.release = vfio_device_fops_release,
.read = vfio_device_fops_read,
.write = vfio_device_fops_write,
.unlocked_ioctl = vfio_device_fops_unl_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = vfio_device_fops_compat_ioctl,
-#endif
+ .compat_ioctl = compat_ptr_ioctl,
.mmap = vfio_device_fops_mmap,
};
diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c
index c9c10708a40f..2ada8e6cdb88 100644
--- a/drivers/vfio/vfio_iommu_type1.c
+++ b/drivers/vfio/vfio_iommu_type1.c
@@ -1640,7 +1640,7 @@ static int vfio_iommu_type1_attach_group(void *iommu_data,
struct bus_type *bus = NULL;
int ret;
bool resv_msi, msi_remap;
- phys_addr_t resv_msi_base;
+ phys_addr_t resv_msi_base = 0;
struct iommu_domain_geometry geo;
LIST_HEAD(iova_copy);
LIST_HEAD(group_resv_regions);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.