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drm/i915/gvt fixes for v5.0-rc3

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Merge tag 'drm-intel-fixes-2019-01-17' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes

drm/i915/gvt fixes for v5.0-rc3

"This contains one cmd parser failure fix to allow cmd access for one
register, and fix region cleanup properly in vGPU destroy, and another
fix for critical mmap size check mistake."

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/87ef9bfusc.fsf@intel.com
This commit is contained in:
Dave Airlie 2019-01-18 09:12:39 +10:00
commit 4ac4cb70d1
4 changed files with 29 additions and 6 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
drivers/gpu/drm/i915/gvt/handlers.c
View file

@ -2799,6 +2799,7 @@ static int init_broadwell_mmio_info(struct intel_gvt *gvt)
MMIO_DFH(_MMIO(0xe2a0), D_BDW_PLUS, F_CMD_ACCESS, NULL, NULL);
MMIO_DFH(_MMIO(0xe2b0), D_BDW_PLUS, F_CMD_ACCESS, NULL, NULL);
MMIO_DFH(_MMIO(0xe2c0), D_BDW_PLUS, F_CMD_ACCESS, NULL, NULL);
MMIO_DFH(_MMIO(0x21f0), D_BDW_PLUS, F_CMD_ACCESS, NULL, NULL);
return 0;
}

2
drivers/gpu/drm/i915/gvt/hypercall.h
View file

@ -41,7 +41,7 @@ struct intel_gvt_mpt {
int (*host_init)(struct device *dev, void *gvt, const void *ops);
void (*host_exit)(struct device *dev, void *gvt);
int (*attach_vgpu)(void *vgpu, unsigned long *handle);
void (*detach_vgpu)(unsigned long handle);
void (*detach_vgpu)(void *vgpu);
int (*inject_msi)(unsigned long handle, u32 addr, u16 data);
unsigned long (*from_virt_to_mfn)(void *p);
int (*enable_page_track)(unsigned long handle, u64 gfn);

30
drivers/gpu/drm/i915/gvt/kvmgt.c
View file

@ -996,7 +996,7 @@ static int intel_vgpu_mmap(struct mdev_device *mdev, struct vm_area_struct *vma)
{
unsigned int index;
u64 virtaddr;
unsigned long req_size, pgoff = 0;
unsigned long req_size, pgoff, req_start;
pgprot_t pg_prot;
struct intel_vgpu *vgpu = mdev_get_drvdata(mdev);
@ -1014,7 +1014,17 @@ static int intel_vgpu_mmap(struct mdev_device *mdev, struct vm_area_struct *vma)
pg_prot = vma->vm_page_prot;
virtaddr = vma->vm_start;
req_size = vma->vm_end - vma->vm_start;
pgoff = vgpu_aperture_pa_base(vgpu) >> PAGE_SHIFT;
pgoff = vma->vm_pgoff &
((1U << (VFIO_PCI_OFFSET_SHIFT - PAGE_SHIFT)) - 1);
req_start = pgoff << PAGE_SHIFT;
if (!intel_vgpu_in_aperture(vgpu, req_start))
return -EINVAL;
if (req_start + req_size >
vgpu_aperture_offset(vgpu) + vgpu_aperture_sz(vgpu))
return -EINVAL;
pgoff = (gvt_aperture_pa_base(vgpu->gvt) >> PAGE_SHIFT) + pgoff;
return remap_pfn_range(vma, virtaddr, pgoff, req_size, pg_prot);
}
@ -1662,9 +1672,21 @@ static int kvmgt_attach_vgpu(void *vgpu, unsigned long *handle)
return 0;
}
static void kvmgt_detach_vgpu(unsigned long handle)
static void kvmgt_detach_vgpu(void *p_vgpu)
{
/* nothing to do here */
int i;
struct intel_vgpu *vgpu = (struct intel_vgpu *)p_vgpu;
if (!vgpu->vdev.region)
return;
for (i = 0; i < vgpu->vdev.num_regions; i++)
if (vgpu->vdev.region[i].ops->release)
vgpu->vdev.region[i].ops->release(vgpu,
&vgpu->vdev.region[i]);
vgpu->vdev.num_regions = 0;
kfree(vgpu->vdev.region);
vgpu->vdev.region = NULL;
}
static int kvmgt_inject_msi(unsigned long handle, u32 addr, u16 data)

2
drivers/gpu/drm/i915/gvt/mpt.h
View file

@ -101,7 +101,7 @@ static inline void intel_gvt_hypervisor_detach_vgpu(struct intel_vgpu *vgpu)
if (!intel_gvt_host.mpt->detach_vgpu)
return;
intel_gvt_host.mpt->detach_vgpu(vgpu->handle);
intel_gvt_host.mpt->detach_vgpu(vgpu);
}
#define MSI_CAP_CONTROL(offset) (offset + 2)