2018-07-26 14:45:05

by Souptick Joarder

Subject: [PATCH v2] drm/vkms: Use new return type vm_fault_t

Use new return type vm_fault_t for fault handler.

Signed-off-by: Souptick Joarder <[email protected]>
---
v2: Updated patch title

drivers/gpu/drm/vkms/vkms_drv.h | 2 +-
drivers/gpu/drm/vkms/vkms_gem.c | 5 ++---
2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/vkms/vkms_drv.h b/drivers/gpu/drm/vkms/vkms_drv.h
index 07be29f..d5d04a8 100644
--- a/drivers/gpu/drm/vkms/vkms_drv.h
+++ b/drivers/gpu/drm/vkms/vkms_drv.h
@@ -65,7 +65,7 @@ struct drm_gem_object *vkms_gem_create(struct drm_device *dev,
u32 *handle,
u64 size);

-int vkms_gem_fault(struct vm_fault *vmf);
+vm_fault_t vkms_gem_fault(struct vm_fault *vmf);

int vkms_dumb_create(struct drm_file *file, struct drm_device *dev,
struct drm_mode_create_dumb *args);
diff --git a/drivers/gpu/drm/vkms/vkms_gem.c b/drivers/gpu/drm/vkms/vkms_gem.c
index c7e3836..62e05dc 100644
--- a/drivers/gpu/drm/vkms/vkms_gem.c
+++ b/drivers/gpu/drm/vkms/vkms_gem.c
@@ -43,14 +43,14 @@ void vkms_gem_free_object(struct drm_gem_object *obj)
kfree(gem);
}

-int vkms_gem_fault(struct vm_fault *vmf)
+vm_fault_t vkms_gem_fault(struct vm_fault *vmf)
{
struct vm_area_struct *vma = vmf->vma;
struct vkms_gem_object *obj = vma->vm_private_data;
unsigned long vaddr = vmf->address;
pgoff_t page_offset;
loff_t num_pages;
- int ret;
+ vm_fault_t ret = VM_FAULT_SIGBUS;

page_offset = (vaddr - vma->vm_start) >> PAGE_SHIFT;
num_pages = DIV_ROUND_UP(obj->gem.size, PAGE_SIZE);
@@ -58,7 +58,6 @@ int vkms_gem_fault(struct vm_fault *vmf)
if (page_offset > num_pages)
return VM_FAULT_SIGBUS;

- ret = -ENOENT;
mutex_lock(&obj->pages_lock);
if (obj->pages) {
get_page(obj->pages[page_offset]);
--
1.9.1

2018-07-29 12:39:54

by Rodrigo Siqueira

Subject: Re: [PATCH v2] drm/vkms: Use new return type vm_fault_t

On 07/26, Souptick Joarder wrote:
> Use new return type vm_fault_t for fault handler.
>
> Signed-off-by: Souptick Joarder <[email protected]>
> ---
> v2: Updated patch title
>
> drivers/gpu/drm/vkms/vkms_drv.h | 2 +-
> drivers/gpu/drm/vkms/vkms_gem.c | 5 ++---
> 2 files changed, 3 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/gpu/drm/vkms/vkms_drv.h b/drivers/gpu/drm/vkms/vkms_drv.h
> index 07be29f..d5d04a8 100644
> --- a/drivers/gpu/drm/vkms/vkms_drv.h
> +++ b/drivers/gpu/drm/vkms/vkms_drv.h
> @@ -65,7 +65,7 @@ struct drm_gem_object *vkms_gem_create(struct drm_device *dev,
> u32 *handle,
> u64 size);
>
> -int vkms_gem_fault(struct vm_fault *vmf);
> +vm_fault_t vkms_gem_fault(struct vm_fault *vmf);
>
> int vkms_dumb_create(struct drm_file *file, struct drm_device *dev,
> struct drm_mode_create_dumb *args);
> diff --git a/drivers/gpu/drm/vkms/vkms_gem.c b/drivers/gpu/drm/vkms/vkms_gem.c
> index c7e3836..62e05dc 100644
> --- a/drivers/gpu/drm/vkms/vkms_gem.c
> +++ b/drivers/gpu/drm/vkms/vkms_gem.c
> @@ -43,14 +43,14 @@ void vkms_gem_free_object(struct drm_gem_object *obj)
> kfree(gem);
> }
>
> -int vkms_gem_fault(struct vm_fault *vmf)
> +vm_fault_t vkms_gem_fault(struct vm_fault *vmf)
> {
> struct vm_area_struct *vma = vmf->vma;
> struct vkms_gem_object *obj = vma->vm_private_data;
> unsigned long vaddr = vmf->address;
> pgoff_t page_offset;
> loff_t num_pages;
> - int ret;
> + vm_fault_t ret = VM_FAULT_SIGBUS;
>
> page_offset = (vaddr - vma->vm_start) >> PAGE_SHIFT;
> num_pages = DIV_ROUND_UP(obj->gem.size, PAGE_SIZE);
> @@ -58,7 +58,6 @@ int vkms_gem_fault(struct vm_fault *vmf)
> if (page_offset > num_pages)
> return VM_FAULT_SIGBUS;
>
> - ret = -ENOENT;
> mutex_lock(&obj->pages_lock);
> if (obj->pages) {
> get_page(obj->pages[page_offset]);
> --
> 1.9.1
>

Reviewed-by: Rodrigo Siqueira <[email protected]>

2018-07-30 04:46:17

by Souptick Joarder

Subject: Re: [PATCH v2] drm/vkms: Use new return type vm_fault_t

On Sun, Jul 29, 2018 at 6:08 PM, Rodrigo Siqueira
<[email protected]> wrote:
> On 07/26, Souptick Joarder wrote:
>> Use new return type vm_fault_t for fault handler.
>>
>> Signed-off-by: Souptick Joarder <[email protected]>
>> ---
>> v2: Updated patch title
>>
>> drivers/gpu/drm/vkms/vkms_drv.h | 2 +-
>> drivers/gpu/drm/vkms/vkms_gem.c | 5 ++---
>> 2 files changed, 3 insertions(+), 4 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/vkms/vkms_drv.h b/drivers/gpu/drm/vkms/vkms_drv.h
>> index 07be29f..d5d04a8 100644
>> --- a/drivers/gpu/drm/vkms/vkms_drv.h
>> +++ b/drivers/gpu/drm/vkms/vkms_drv.h
>> @@ -65,7 +65,7 @@ struct drm_gem_object *vkms_gem_create(struct drm_device *dev,
>> u32 *handle,
>> u64 size);
>>
>> -int vkms_gem_fault(struct vm_fault *vmf);
>> +vm_fault_t vkms_gem_fault(struct vm_fault *vmf);
>>
>> int vkms_dumb_create(struct drm_file *file, struct drm_device *dev,
>> struct drm_mode_create_dumb *args);
>> diff --git a/drivers/gpu/drm/vkms/vkms_gem.c b/drivers/gpu/drm/vkms/vkms_gem.c
>> index c7e3836..62e05dc 100644
>> --- a/drivers/gpu/drm/vkms/vkms_gem.c
>> +++ b/drivers/gpu/drm/vkms/vkms_gem.c
>> @@ -43,14 +43,14 @@ void vkms_gem_free_object(struct drm_gem_object *obj)
>> kfree(gem);
>> }
>>
>> -int vkms_gem_fault(struct vm_fault *vmf)
>> +vm_fault_t vkms_gem_fault(struct vm_fault *vmf)
>> {
>> struct vm_area_struct *vma = vmf->vma;
>> struct vkms_gem_object *obj = vma->vm_private_data;
>> unsigned long vaddr = vmf->address;
>> pgoff_t page_offset;
>> loff_t num_pages;
>> - int ret;
>> + vm_fault_t ret = VM_FAULT_SIGBUS;
>>
>> page_offset = (vaddr - vma->vm_start) >> PAGE_SHIFT;
>> num_pages = DIV_ROUND_UP(obj->gem.size, PAGE_SIZE);
>> @@ -58,7 +58,6 @@ int vkms_gem_fault(struct vm_fault *vmf)
>> if (page_offset > num_pages)
>> return VM_FAULT_SIGBUS;
>>
>> - ret = -ENOENT;
>> mutex_lock(&obj->pages_lock);
>> if (obj->pages) {
>> get_page(obj->pages[page_offset]);
>> --
>> 1.9.1
>>
>
> Reviewed-by: Rodrigo Siqueira <[email protected]>

Rodrigo, can we get this patch in queue for 4.19 ?

2018-07-30 18:36:04

by Gustavo Padovan

Subject: Re: [PATCH v2] drm/vkms: Use new return type vm_fault_t

Hi Souptick,

On Thu, Jul 26, 2018 at 08:15:49PM +0530, Souptick Joarder wrote:
> Use new return type vm_fault_t for fault handler.
>
> Signed-off-by: Souptick Joarder <[email protected]>
> ---
> v2: Updated patch title
>
> drivers/gpu/drm/vkms/vkms_drv.h | 2 +-
> drivers/gpu/drm/vkms/vkms_gem.c | 5 ++---
> 2 files changed, 3 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/gpu/drm/vkms/vkms_drv.h b/drivers/gpu/drm/vkms/vkms_drv.h
> index 07be29f..d5d04a8 100644
> --- a/drivers/gpu/drm/vkms/vkms_drv.h
> +++ b/drivers/gpu/drm/vkms/vkms_drv.h
> @@ -65,7 +65,7 @@ struct drm_gem_object *vkms_gem_create(struct drm_device *dev,
> u32 *handle,
> u64 size);
>
> -int vkms_gem_fault(struct vm_fault *vmf);
> +vm_fault_t vkms_gem_fault(struct vm_fault *vmf);
>
> int vkms_dumb_create(struct drm_file *file, struct drm_device *dev,
> struct drm_mode_create_dumb *args);
> diff --git a/drivers/gpu/drm/vkms/vkms_gem.c b/drivers/gpu/drm/vkms/vkms_gem.c
> index c7e3836..62e05dc 100644
> --- a/drivers/gpu/drm/vkms/vkms_gem.c
> +++ b/drivers/gpu/drm/vkms/vkms_gem.c
> @@ -43,14 +43,14 @@ void vkms_gem_free_object(struct drm_gem_object *obj)
> kfree(gem);
> }
>
> -int vkms_gem_fault(struct vm_fault *vmf)
> +vm_fault_t vkms_gem_fault(struct vm_fault *vmf)
> {
> struct vm_area_struct *vma = vmf->vma;
> struct vkms_gem_object *obj = vma->vm_private_data;
> unsigned long vaddr = vmf->address;
> pgoff_t page_offset;
> loff_t num_pages;
> - int ret;
> + vm_fault_t ret = VM_FAULT_SIGBUS;
>
> page_offset = (vaddr - vma->vm_start) >> PAGE_SHIFT;
> num_pages = DIV_ROUND_UP(obj->gem.size, PAGE_SIZE);
> @@ -58,7 +58,6 @@ int vkms_gem_fault(struct vm_fault *vmf)
> if (page_offset > num_pages)
> return VM_FAULT_SIGBUS;
>
> - ret = -ENOENT;
> mutex_lock(&obj->pages_lock);
> if (obj->pages) {
> get_page(obj->pages[page_offset]);
> --
> 1.9.1

Patch pushed to drm-misc-next. vkms is still experimental so I'm not
queueing this for 4.19. Thanks.

Gustavo

2018-08-28 16:52:09

by Souptick Joarder

Subject: Re: [PATCH v2] drm/vkms: Use new return type vm_fault_t

On Tue, Jul 31, 2018 at 12:05 AM Gustavo Padovan <[email protected]> wrote:
>
> Hi Souptick,
>
> On Thu, Jul 26, 2018 at 08:15:49PM +0530, Souptick Joarder wrote:
> > Use new return type vm_fault_t for fault handler.
> >
> > Signed-off-by: Souptick Joarder <[email protected]>
> > ---
> > v2: Updated patch title
> >
> > drivers/gpu/drm/vkms/vkms_drv.h | 2 +-
> > drivers/gpu/drm/vkms/vkms_gem.c | 5 ++---
> > 2 files changed, 3 insertions(+), 4 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/vkms/vkms_drv.h b/drivers/gpu/drm/vkms/vkms_drv.h
> > index 07be29f..d5d04a8 100644
> > --- a/drivers/gpu/drm/vkms/vkms_drv.h
> > +++ b/drivers/gpu/drm/vkms/vkms_drv.h
> > @@ -65,7 +65,7 @@ struct drm_gem_object *vkms_gem_create(struct drm_device *dev,
> > u32 *handle,
> > u64 size);
> >
> > -int vkms_gem_fault(struct vm_fault *vmf);
> > +vm_fault_t vkms_gem_fault(struct vm_fault *vmf);
> >
> > int vkms_dumb_create(struct drm_file *file, struct drm_device *dev,
> > struct drm_mode_create_dumb *args);
> > diff --git a/drivers/gpu/drm/vkms/vkms_gem.c b/drivers/gpu/drm/vkms/vkms_gem.c
> > index c7e3836..62e05dc 100644
> > --- a/drivers/gpu/drm/vkms/vkms_gem.c
> > +++ b/drivers/gpu/drm/vkms/vkms_gem.c
> > @@ -43,14 +43,14 @@ void vkms_gem_free_object(struct drm_gem_object *obj)
> > kfree(gem);
> > }
> >
> > -int vkms_gem_fault(struct vm_fault *vmf)
> > +vm_fault_t vkms_gem_fault(struct vm_fault *vmf)
> > {
> > struct vm_area_struct *vma = vmf->vma;
> > struct vkms_gem_object *obj = vma->vm_private_data;
> > unsigned long vaddr = vmf->address;
> > pgoff_t page_offset;
> > loff_t num_pages;
> > - int ret;
> > + vm_fault_t ret = VM_FAULT_SIGBUS;
> >
> > page_offset = (vaddr - vma->vm_start) >> PAGE_SHIFT;
> > num_pages = DIV_ROUND_UP(obj->gem.size, PAGE_SIZE);
> > @@ -58,7 +58,6 @@ int vkms_gem_fault(struct vm_fault *vmf)
> > if (page_offset > num_pages)
> > return VM_FAULT_SIGBUS;
> >
> > - ret = -ENOENT;
> > mutex_lock(&obj->pages_lock);
> > if (obj->pages) {
> > get_page(obj->pages[page_offset]);
> > --
> > 1.9.1
>
> Patch pushed to drm-misc-next. vkms is still experimental so I'm not
> queueing this for 4.19. Thanks.
>
> Gustavo

Gustavo, can we get this patch into 4.19-rc-x ?