[PATCH v7 9/9] drm/vmwgfx: Hook up the helpers to align buffer objects

From: Thomas HellstrÃm (VMware)
Date: Tue Mar 24 2020 - 16:12:06 EST


From: "Thomas Hellstrom (VMware)" <thomas_os@xxxxxxxxxxxx>

Start using the helpers that align buffer object user-space addresses and
buffer object vram addresses to huge page boundaries.
This is to improve the chances of allowing huge page-table entries.

Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxx>
Cc: "Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>
Cc: "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx>
Cc: Ralph Campbell <rcampbell@xxxxxxxxxx>
Cc: "JÃrÃme Glisse" <jglisse@xxxxxxxxxx>
Cc: "Christian KÃnig" <christian.koenig@xxxxxxx>
Cc: Dan Williams <dan.j.williams@xxxxxxxxx>
Signed-off-by: Thomas Hellstrom (VMware) <thomas_os@xxxxxxxxxxxx>
Reviewed-by: Roland Scheidegger <sroland@xxxxxxxxxx>
Acked-by: Christian KÃnig <christian.koenig@xxxxxxx>
---
drivers/gpu/drm/drm_file.c | 1 +
drivers/gpu/drm/vmwgfx/vmwgfx_drv.c | 13 +++++++++++++
drivers/gpu/drm/vmwgfx/vmwgfx_drv.h | 1 +
drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c | 2 +-
4 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/drm_file.c b/drivers/gpu/drm/drm_file.c
index d1fcb0c61622..eb009d3ab48f 100644
--- a/drivers/gpu/drm/drm_file.c
+++ b/drivers/gpu/drm/drm_file.c
@@ -1011,4 +1011,5 @@ unsigned long drm_get_unmapped_area(struct file *file,
return current->mm->get_unmapped_area(file, uaddr, len, pgoff, flags);
}
#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
+EXPORT_SYMBOL_GPL(drm_get_unmapped_area);
#endif /* CONFIG_MMU */
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
index 4f58364421ce..f0b7a891cbad 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
@@ -1230,6 +1230,18 @@ static void vmw_remove(struct pci_dev *pdev)
pci_disable_device(pdev);
}

+static unsigned long
+vmw_get_unmapped_area(struct file *file, unsigned long uaddr,
+ unsigned long len, unsigned long pgoff,
+ unsigned long flags)
+{
+ struct drm_file *file_priv = file->private_data;
+ struct vmw_private *dev_priv = vmw_priv(file_priv->minor->dev);
+
+ return drm_get_unmapped_area(file, uaddr, len, pgoff, flags,
+ &dev_priv->vma_manager);
+}
+
static int vmwgfx_pm_notifier(struct notifier_block *nb, unsigned long val,
void *ptr)
{
@@ -1401,6 +1413,7 @@ static const struct file_operations vmwgfx_driver_fops = {
.compat_ioctl = vmw_compat_ioctl,
#endif
.llseek = noop_llseek,
+ .get_unmapped_area = vmw_get_unmapped_area,
};

static struct drm_driver driver = {
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
index d19d28c13671..fc98622caf87 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
@@ -915,6 +915,7 @@ extern int vmw_mmap(struct file *filp, struct vm_area_struct *vma);

extern void vmw_validation_mem_init_ttm(struct vmw_private *dev_priv,
size_t gran);
+
/**
* TTM buffer object driver - vmwgfx_ttm_buffer.c
*/
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c b/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c
index 3f3b2c7a208a..bf0bc4697959 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c
@@ -749,7 +749,7 @@ static int vmw_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
break;
case TTM_PL_VRAM:
/* "On-card" video ram */
- man->func = &ttm_bo_manager_func;
+ man->func = &vmw_thp_func;
man->gpu_offset = 0;
man->flags = TTM_MEMTYPE_FLAG_FIXED | TTM_MEMTYPE_FLAG_MAPPABLE;
man->available_caching = TTM_PL_FLAG_CACHED;
--
2.21.1