summaryrefslogtreecommitdiff
path: root/drivers/vfio
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/vfio')
-rw-r--r--drivers/vfio/Kconfig4
-rw-r--r--drivers/vfio/pci/Kconfig2
-rw-r--r--drivers/vfio/platform/Kconfig4
-rw-r--r--drivers/vfio/vfio_iommu_type1.c57
4 files changed, 36 insertions, 31 deletions
diff --git a/drivers/vfio/Kconfig b/drivers/vfio/Kconfig
index 5533df91b257..67d0bf4efa16 100644
--- a/drivers/vfio/Kconfig
+++ b/drivers/vfio/Kconfig
@@ -21,8 +21,8 @@ config VFIO_VIRQFD
menuconfig VFIO
tristate "VFIO Non-Privileged userspace driver framework"
- depends on IOMMU_API
- select VFIO_IOMMU_TYPE1 if (X86 || S390 || ARM || ARM64)
+ select IOMMU_API
+ select VFIO_IOMMU_TYPE1 if MMU && (X86 || S390 || ARM || ARM64)
help
VFIO provides a framework for secure userspace device drivers.
See Documentation/driver-api/vfio.rst for more details.
diff --git a/drivers/vfio/pci/Kconfig b/drivers/vfio/pci/Kconfig
index ac3c1dd3edef..4abddbebd4b2 100644
--- a/drivers/vfio/pci/Kconfig
+++ b/drivers/vfio/pci/Kconfig
@@ -42,6 +42,6 @@ config VFIO_PCI_IGD
config VFIO_PCI_NVLINK2
def_bool y
- depends on VFIO_PCI && PPC_POWERNV
+ depends on VFIO_PCI && PPC_POWERNV && SPAPR_TCE_IOMMU
help
VFIO PCI support for P9 Witherspoon machine with NVIDIA V100 GPUs
diff --git a/drivers/vfio/platform/Kconfig b/drivers/vfio/platform/Kconfig
index dc1a3c44f2c6..ab341108a0be 100644
--- a/drivers/vfio/platform/Kconfig
+++ b/drivers/vfio/platform/Kconfig
@@ -1,7 +1,7 @@
# SPDX-License-Identifier: GPL-2.0-only
config VFIO_PLATFORM
tristate "VFIO support for platform devices"
- depends on VFIO && EVENTFD && (ARM || ARM64)
+ depends on VFIO && EVENTFD && (ARM || ARM64 || COMPILE_TEST)
select VFIO_VIRQFD
help
Support for platform devices with VFIO. This is required to make
@@ -12,7 +12,7 @@ config VFIO_PLATFORM
config VFIO_AMBA
tristate "VFIO support for AMBA devices"
- depends on VFIO_PLATFORM && ARM_AMBA
+ depends on VFIO_PLATFORM && (ARM_AMBA || COMPILE_TEST)
help
Support for ARM AMBA devices with VFIO. This is required to make
use of ARM AMBA devices present on the system using the VFIO
diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c
index 4bb162c1d649..3c8048d78282 100644
--- a/drivers/vfio/vfio_iommu_type1.c
+++ b/drivers/vfio/vfio_iommu_type1.c
@@ -189,7 +189,7 @@ static struct vfio_dma *vfio_find_dma(struct vfio_iommu *iommu,
}
static struct rb_node *vfio_find_dma_first_node(struct vfio_iommu *iommu,
- dma_addr_t start, size_t size)
+ dma_addr_t start, u64 size)
{
struct rb_node *res = NULL;
struct rb_node *node = iommu->dma_list.rb_node;
@@ -739,6 +739,12 @@ out:
ret = vfio_lock_acct(dma, lock_acct, false);
unpin_out:
+ if (batch->size == 1 && !batch->offset) {
+ /* May be a VM_PFNMAP pfn, which the batch can't remember. */
+ put_pfn(pfn, dma->prot);
+ batch->size = 0;
+ }
+
if (ret < 0) {
if (pinned && !rsvd) {
for (pfn = *pfn_base ; pinned ; pfn++, pinned--)
@@ -785,7 +791,12 @@ static int vfio_pin_page_external(struct vfio_dma *dma, unsigned long vaddr,
return -ENODEV;
ret = vaddr_get_pfns(mm, vaddr, 1, dma->prot, pfn_base, pages);
- if (ret == 1 && do_accounting && !is_invalid_reserved_pfn(*pfn_base)) {
+ if (ret != 1)
+ goto out;
+
+ ret = 0;
+
+ if (do_accounting && !is_invalid_reserved_pfn(*pfn_base)) {
ret = vfio_lock_acct(dma, 1, true);
if (ret) {
put_pfn(*pfn_base, dma->prot);
@@ -797,6 +808,7 @@ static int vfio_pin_page_external(struct vfio_dma *dma, unsigned long vaddr,
}
}
+out:
mmput(mm);
return ret;
}
@@ -1288,7 +1300,7 @@ static int vfio_dma_do_unmap(struct vfio_iommu *iommu,
int ret = -EINVAL, retries = 0;
unsigned long pgshift;
dma_addr_t iova = unmap->iova;
- unsigned long size = unmap->size;
+ u64 size = unmap->size;
bool unmap_all = unmap->flags & VFIO_DMA_UNMAP_FLAG_ALL;
bool invalidate_vaddr = unmap->flags & VFIO_DMA_UNMAP_FLAG_VADDR;
struct rb_node *n, *first_n;
@@ -1304,14 +1316,12 @@ static int vfio_dma_do_unmap(struct vfio_iommu *iommu,
if (unmap_all) {
if (iova || size)
goto unlock;
- size = SIZE_MAX;
- } else if (!size || size & (pgsize - 1)) {
+ size = U64_MAX;
+ } else if (!size || size & (pgsize - 1) ||
+ iova + size - 1 < iova || size > SIZE_MAX) {
goto unlock;
}
- if (iova + size - 1 < iova || size > SIZE_MAX)
- goto unlock;
-
/* When dirty tracking is enabled, allow only min supported pgsize */
if ((unmap->flags & VFIO_DMA_UNMAP_FLAG_GET_DIRTY_BITMAP) &&
(!iommu->dirty_page_tracking || (bitmap->pgsize != pgsize))) {
@@ -2252,7 +2262,7 @@ static int vfio_iommu_type1_attach_group(void *iommu_data,
int ret;
bool resv_msi, msi_remap;
phys_addr_t resv_msi_base = 0;
- struct iommu_domain_geometry geo;
+ struct iommu_domain_geometry *geo;
LIST_HEAD(iova_copy);
LIST_HEAD(group_resv_regions);
@@ -2320,10 +2330,7 @@ static int vfio_iommu_type1_attach_group(void *iommu_data,
}
if (iommu->nesting) {
- int attr = 1;
-
- ret = iommu_domain_set_attr(domain->domain, DOMAIN_ATTR_NESTING,
- &attr);
+ ret = iommu_enable_nesting(domain->domain);
if (ret)
goto out_domain;
}
@@ -2333,10 +2340,9 @@ static int vfio_iommu_type1_attach_group(void *iommu_data,
goto out_domain;
/* Get aperture info */
- iommu_domain_get_attr(domain->domain, DOMAIN_ATTR_GEOMETRY, &geo);
-
- if (vfio_iommu_aper_conflict(iommu, geo.aperture_start,
- geo.aperture_end)) {
+ geo = &domain->domain->geometry;
+ if (vfio_iommu_aper_conflict(iommu, geo->aperture_start,
+ geo->aperture_end)) {
ret = -EINVAL;
goto out_detach;
}
@@ -2359,8 +2365,8 @@ static int vfio_iommu_type1_attach_group(void *iommu_data,
if (ret)
goto out_detach;
- ret = vfio_iommu_aper_resize(&iova_copy, geo.aperture_start,
- geo.aperture_end);
+ ret = vfio_iommu_aper_resize(&iova_copy, geo->aperture_start,
+ geo->aperture_end);
if (ret)
goto out_detach;
@@ -2493,7 +2499,6 @@ static void vfio_iommu_aper_expand(struct vfio_iommu *iommu,
struct list_head *iova_copy)
{
struct vfio_domain *domain;
- struct iommu_domain_geometry geo;
struct vfio_iova *node;
dma_addr_t start = 0;
dma_addr_t end = (dma_addr_t)~0;
@@ -2502,12 +2507,12 @@ static void vfio_iommu_aper_expand(struct vfio_iommu *iommu,
return;
list_for_each_entry(domain, &iommu->domain_list, next) {
- iommu_domain_get_attr(domain->domain, DOMAIN_ATTR_GEOMETRY,
- &geo);
- if (geo.aperture_start > start)
- start = geo.aperture_start;
- if (geo.aperture_end < end)
- end = geo.aperture_end;
+ struct iommu_domain_geometry *geo = &domain->domain->geometry;
+
+ if (geo->aperture_start > start)
+ start = geo->aperture_start;
+ if (geo->aperture_end < end)
+ end = geo->aperture_end;
}
/* Modify aperture limits. The new aper is either same or bigger */
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-21 07:35:19 +0000