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-rw-r--r--Documentation/driver-api/vfio-mediated-device.rst4
-rw-r--r--drivers/gpu/drm/i915/gvt/kvmgt.c18
-rw-r--r--drivers/s390/cio/vfio_ccw_cp.c4
-rw-r--r--drivers/s390/crypto/vfio_ap_ops.c9
-rw-r--r--drivers/vfio/vfio.c27
-rw-r--r--drivers/vfio/vfio.h4
-rw-r--r--drivers/vfio/vfio_iommu_type1.c15
-rw-r--r--include/linux/vfio.h5
8 files changed, 37 insertions, 49 deletions
diff --git a/Documentation/driver-api/vfio-mediated-device.rst b/Documentation/driver-api/vfio-mediated-device.rst
index b0fdf76b339a..ea32a0f13ddb 100644
--- a/Documentation/driver-api/vfio-mediated-device.rst
+++ b/Documentation/driver-api/vfio-mediated-device.rst
@@ -262,10 +262,10 @@ Translation APIs for Mediated Devices
The following APIs are provided for translating user pfn to host pfn in a VFIO
driver::
- int vfio_pin_pages(struct vfio_device *device, unsigned long *user_pfn,
+ int vfio_pin_pages(struct vfio_device *device, dma_addr_t iova,
int npage, int prot, unsigned long *phys_pfn);
- void vfio_unpin_pages(struct vfio_device *device, unsigned long *user_pfn,
+ void vfio_unpin_pages(struct vfio_device *device, dma_addr_t iova,
int npage);
These functions call back into the back-end IOMMU module by using the pin_pages
diff --git a/drivers/gpu/drm/i915/gvt/kvmgt.c b/drivers/gpu/drm/i915/gvt/kvmgt.c
index 2fee5695515a..8be75c282611 100644
--- a/drivers/gpu/drm/i915/gvt/kvmgt.c
+++ b/drivers/gpu/drm/i915/gvt/kvmgt.c
@@ -231,14 +231,8 @@ static void intel_gvt_cleanup_vgpu_type_groups(struct intel_gvt *gvt)
static void gvt_unpin_guest_page(struct intel_vgpu *vgpu, unsigned long gfn,
unsigned long size)
{
- int total_pages = DIV_ROUND_UP(size, PAGE_SIZE);
- int npage;
-
- for (npage = 0; npage < total_pages; npage++) {
- unsigned long cur_gfn = gfn + npage;
-
- vfio_unpin_pages(&vgpu->vfio_device, &cur_gfn, 1);
- }
+ vfio_unpin_pages(&vgpu->vfio_device, gfn << PAGE_SHIFT,
+ DIV_ROUND_UP(size, PAGE_SIZE));
}
/* Pin a normal or compound guest page for dma. */
@@ -255,14 +249,14 @@ static int gvt_pin_guest_page(struct intel_vgpu *vgpu, unsigned long gfn,
* on stack to hold pfns.
*/
for (npage = 0; npage < total_pages; npage++) {
- unsigned long cur_gfn = gfn + npage;
+ dma_addr_t cur_iova = (gfn + npage) << PAGE_SHIFT;
unsigned long pfn;
- ret = vfio_pin_pages(&vgpu->vfio_device, &cur_gfn, 1,
+ ret = vfio_pin_pages(&vgpu->vfio_device, cur_iova, 1,
IOMMU_READ | IOMMU_WRITE, &pfn);
if (ret != 1) {
- gvt_vgpu_err("vfio_pin_pages failed for gfn 0x%lx, ret %d\n",
- cur_gfn, ret);
+ gvt_vgpu_err("vfio_pin_pages failed for iova %pad, ret %d\n",
+ &cur_iova, ret);
goto err;
}
diff --git a/drivers/s390/cio/vfio_ccw_cp.c b/drivers/s390/cio/vfio_ccw_cp.c
index 3b94863ad24e..a739262f988d 100644
--- a/drivers/s390/cio/vfio_ccw_cp.c
+++ b/drivers/s390/cio/vfio_ccw_cp.c
@@ -114,7 +114,7 @@ static void pfn_array_unpin(struct pfn_array *pa,
continue;
}
- vfio_unpin_pages(vdev, first, npage);
+ vfio_unpin_pages(vdev, *first << PAGE_SHIFT, npage);
unpinned += npage;
npage = 1;
}
@@ -146,7 +146,7 @@ static int pfn_array_pin(struct pfn_array *pa, struct vfio_device *vdev)
continue;
}
- ret = vfio_pin_pages(vdev, first, npage,
+ ret = vfio_pin_pages(vdev, *first << PAGE_SHIFT, npage,
IOMMU_READ | IOMMU_WRITE,
&pa->pa_pfn[pinned]);
if (ret < 0) {
diff --git a/drivers/s390/crypto/vfio_ap_ops.c b/drivers/s390/crypto/vfio_ap_ops.c
index 5781059d3ed2..70f484668ca0 100644
--- a/drivers/s390/crypto/vfio_ap_ops.c
+++ b/drivers/s390/crypto/vfio_ap_ops.c
@@ -124,7 +124,7 @@ static void vfio_ap_free_aqic_resources(struct vfio_ap_queue *q)
q->saved_isc = VFIO_AP_ISC_INVALID;
}
if (q->saved_pfn && !WARN_ON(!q->matrix_mdev)) {
- vfio_unpin_pages(&q->matrix_mdev->vdev, &q->saved_pfn, 1);
+ vfio_unpin_pages(&q->matrix_mdev->vdev, q->saved_pfn << PAGE_SHIFT, 1);
q->saved_pfn = 0;
}
}
@@ -258,7 +258,7 @@ static struct ap_queue_status vfio_ap_irq_enable(struct vfio_ap_queue *q,
return status;
}
- ret = vfio_pin_pages(&q->matrix_mdev->vdev, &g_pfn, 1,
+ ret = vfio_pin_pages(&q->matrix_mdev->vdev, g_pfn << PAGE_SHIFT, 1,
IOMMU_READ | IOMMU_WRITE, &h_pfn);
switch (ret) {
case 1:
@@ -301,7 +301,7 @@ static struct ap_queue_status vfio_ap_irq_enable(struct vfio_ap_queue *q,
break;
case AP_RESPONSE_OTHERWISE_CHANGED:
/* We could not modify IRQ setings: clear new configuration */
- vfio_unpin_pages(&q->matrix_mdev->vdev, &g_pfn, 1);
+ vfio_unpin_pages(&q->matrix_mdev->vdev, g_pfn << PAGE_SHIFT, 1);
kvm_s390_gisc_unregister(kvm, isc);
break;
default:
@@ -1232,9 +1232,8 @@ static void vfio_ap_mdev_dma_unmap(struct vfio_device *vdev, u64 iova,
{
struct ap_matrix_mdev *matrix_mdev =
container_of(vdev, struct ap_matrix_mdev, vdev);
- unsigned long g_pfn = iova >> PAGE_SHIFT;
- vfio_unpin_pages(&matrix_mdev->vdev, &g_pfn, 1);
+ vfio_unpin_pages(&matrix_mdev->vdev, iova, 1);
}
/**
diff --git a/drivers/vfio/vfio.c b/drivers/vfio/vfio.c
index 92b10aafae28..ffd1a492eea9 100644
--- a/drivers/vfio/vfio.c
+++ b/drivers/vfio/vfio.c
@@ -1934,17 +1934,17 @@ int vfio_set_irqs_validate_and_prepare(struct vfio_irq_set *hdr, int num_irqs,
EXPORT_SYMBOL(vfio_set_irqs_validate_and_prepare);
/*
- * Pin a set of guest PFNs and return their associated host PFNs for local
+ * Pin contiguous user pages and return their associated host pages for local
* domain only.
* @device [in] : device
- * @user_pfn [in]: array of user/guest PFNs to be pinned.
- * @npage [in] : count of elements in user_pfn array. This count should not
- * be greater VFIO_PIN_PAGES_MAX_ENTRIES.
+ * @iova [in] : starting IOVA of user pages to be pinned.
+ * @npage [in] : count of pages to be pinned. This count should not
+ * be greater than VFIO_PIN_PAGES_MAX_ENTRIES.
* @prot [in] : protection flags
* @phys_pfn[out]: array of host PFNs
* Return error or number of pages pinned.
*/
-int vfio_pin_pages(struct vfio_device *device, unsigned long *user_pfn,
+int vfio_pin_pages(struct vfio_device *device, dma_addr_t iova,
int npage, int prot, unsigned long *phys_pfn)
{
struct vfio_container *container;
@@ -1952,8 +1952,7 @@ int vfio_pin_pages(struct vfio_device *device, unsigned long *user_pfn,
struct vfio_iommu_driver *driver;
int ret;
- if (!user_pfn || !phys_pfn || !npage ||
- !vfio_assert_device_open(device))
+ if (!phys_pfn || !npage || !vfio_assert_device_open(device))
return -EINVAL;
if (npage > VFIO_PIN_PAGES_MAX_ENTRIES)
@@ -1967,7 +1966,7 @@ int vfio_pin_pages(struct vfio_device *device, unsigned long *user_pfn,
driver = container->iommu_driver;
if (likely(driver && driver->ops->pin_pages))
ret = driver->ops->pin_pages(container->iommu_data,
- group->iommu_group, user_pfn,
+ group->iommu_group, iova,
npage, prot, phys_pfn);
else
ret = -ENOTTY;
@@ -1977,15 +1976,13 @@ int vfio_pin_pages(struct vfio_device *device, unsigned long *user_pfn,
EXPORT_SYMBOL(vfio_pin_pages);
/*
- * Unpin set of host PFNs for local domain only.
+ * Unpin contiguous host pages for local domain only.
* @device [in] : device
- * @user_pfn [in]: array of user/guest PFNs to be unpinned. Number of user/guest
- * PFNs should not be greater than VFIO_PIN_PAGES_MAX_ENTRIES.
- * @npage [in] : count of elements in user_pfn array. This count should not
+ * @iova [in] : starting address of user pages to be unpinned.
+ * @npage [in] : count of pages to be unpinned. This count should not
* be greater than VFIO_PIN_PAGES_MAX_ENTRIES.
*/
-void vfio_unpin_pages(struct vfio_device *device, unsigned long *user_pfn,
- int npage)
+void vfio_unpin_pages(struct vfio_device *device, dma_addr_t iova, int npage)
{
struct vfio_container *container;
struct vfio_iommu_driver *driver;
@@ -2000,7 +1997,7 @@ void vfio_unpin_pages(struct vfio_device *device, unsigned long *user_pfn,
container = device->group->container;
driver = container->iommu_driver;
- driver->ops->unpin_pages(container->iommu_data, user_pfn, npage);
+ driver->ops->unpin_pages(container->iommu_data, iova, npage);
}
EXPORT_SYMBOL(vfio_unpin_pages);
diff --git a/drivers/vfio/vfio.h b/drivers/vfio/vfio.h
index 6a8424b407c7..e9767e13f00f 100644
--- a/drivers/vfio/vfio.h
+++ b/drivers/vfio/vfio.h
@@ -50,11 +50,11 @@ struct vfio_iommu_driver_ops {
struct iommu_group *group);
int (*pin_pages)(void *iommu_data,
struct iommu_group *group,
- unsigned long *user_pfn,
+ dma_addr_t user_iova,
int npage, int prot,
unsigned long *phys_pfn);
void (*unpin_pages)(void *iommu_data,
- unsigned long *user_pfn, int npage);
+ dma_addr_t user_iova, int npage);
void (*register_device)(void *iommu_data,
struct vfio_device *vdev);
void (*unregister_device)(void *iommu_data,
diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c
index e49fbe9968ef..e629e059118c 100644
--- a/drivers/vfio/vfio_iommu_type1.c
+++ b/drivers/vfio/vfio_iommu_type1.c
@@ -829,7 +829,7 @@ static int vfio_unpin_page_external(struct vfio_dma *dma, dma_addr_t iova,
static int vfio_iommu_type1_pin_pages(void *iommu_data,
struct iommu_group *iommu_group,
- unsigned long *user_pfn,
+ dma_addr_t user_iova,
int npage, int prot,
unsigned long *phys_pfn)
{
@@ -841,7 +841,7 @@ static int vfio_iommu_type1_pin_pages(void *iommu_data,
bool do_accounting;
dma_addr_t iova;
- if (!iommu || !user_pfn || !phys_pfn)
+ if (!iommu || !phys_pfn)
return -EINVAL;
/* Supported for v2 version only */
@@ -857,7 +857,7 @@ static int vfio_iommu_type1_pin_pages(void *iommu_data,
again:
if (iommu->vaddr_invalid_count) {
for (i = 0; i < npage; i++) {
- iova = user_pfn[i] << PAGE_SHIFT;
+ iova = user_iova + PAGE_SIZE * i;
ret = vfio_find_dma_valid(iommu, iova, PAGE_SIZE, &dma);
if (ret < 0)
goto pin_done;
@@ -882,7 +882,7 @@ again:
for (i = 0; i < npage; i++) {
struct vfio_pfn *vpfn;
- iova = user_pfn[i] << PAGE_SHIFT;
+ iova = user_iova + PAGE_SIZE * i;
dma = vfio_find_dma(iommu, iova, PAGE_SIZE);
if (!dma) {
ret = -EINVAL;
@@ -939,7 +939,7 @@ pin_unwind:
for (j = 0; j < i; j++) {
dma_addr_t iova;
- iova = user_pfn[j] << PAGE_SHIFT;
+ iova = user_iova + PAGE_SIZE * j;
dma = vfio_find_dma(iommu, iova, PAGE_SIZE);
vfio_unpin_page_external(dma, iova, do_accounting);
phys_pfn[j] = 0;
@@ -950,7 +950,7 @@ pin_done:
}
static void vfio_iommu_type1_unpin_pages(void *iommu_data,
- unsigned long *user_pfn, int npage)
+ dma_addr_t user_iova, int npage)
{
struct vfio_iommu *iommu = iommu_data;
bool do_accounting;
@@ -964,10 +964,9 @@ static void vfio_iommu_type1_unpin_pages(void *iommu_data,
do_accounting = list_empty(&iommu->domain_list);
for (i = 0; i < npage; i++) {
+ dma_addr_t iova = user_iova + PAGE_SIZE * i;
struct vfio_dma *dma;
- dma_addr_t iova;
- iova = user_pfn[i] << PAGE_SHIFT;
dma = vfio_find_dma(iommu, iova, PAGE_SIZE);
if (!dma)
break;
diff --git a/include/linux/vfio.h b/include/linux/vfio.h
index 9f7d74c24925..9e3b6abcf890 100644
--- a/include/linux/vfio.h
+++ b/include/linux/vfio.h
@@ -161,10 +161,9 @@ bool vfio_file_has_dev(struct file *file, struct vfio_device *device);
#define VFIO_PIN_PAGES_MAX_ENTRIES (PAGE_SIZE/sizeof(unsigned long))
-int vfio_pin_pages(struct vfio_device *device, unsigned long *user_pfn,
+int vfio_pin_pages(struct vfio_device *device, dma_addr_t iova,
int npage, int prot, unsigned long *phys_pfn);
-void vfio_unpin_pages(struct vfio_device *device, unsigned long *user_pfn,
- int npage);
+void vfio_unpin_pages(struct vfio_device *device, dma_addr_t iova, int npage);
int vfio_dma_rw(struct vfio_device *device, dma_addr_t user_iova,
void *data, size_t len, bool write);
generated by cgit (git 2.34.1) at 2024-06-23 21:55:36 +0000