[PATCH 1/2] fbdev/hyperv_fb: deprecate this in favor of Hyper-V DRM driver

Subsystems: framebuffer layer, the rest

STALE351d

5 messages, 5 authors, 2025-09-30 · open the first message on its own page

[PATCH 1/2] fbdev/hyperv_fb: deprecate this in favor of Hyper-V DRM driver

From: Prasanna Kumar T S M <hidden>
Date: 2025-09-17 14:03:11

The Hyper-V DRM driver is available since kernel version 5.14 and it
provides full KMS support and fbdev emulation via the DRM fbdev helpers.
Deprecate this driver in favor of Hyper-V DRM driver.

Signed-off-by: Prasanna Kumar T S M <redacted>
---
 drivers/video/fbdev/Kconfig     | 5 ++++-
 drivers/video/fbdev/hyperv_fb.c | 2 ++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/video/fbdev/Kconfig b/drivers/video/fbdev/Kconfig
index c21484d15f0c..48c1c7417f6d 100644
--- a/drivers/video/fbdev/Kconfig
+++ b/drivers/video/fbdev/Kconfig

@@ -1773,13 +1773,16 @@ config FB_BROADSHEET
 	  a bridge adapter.
 
 config FB_HYPERV
-	tristate "Microsoft Hyper-V Synthetic Video support"
+	tristate "Microsoft Hyper-V Synthetic Video support (DEPRECATED)"
 	depends on FB && HYPERV
 	select DMA_CMA if HAVE_DMA_CONTIGUOUS && CMA
 	select FB_IOMEM_HELPERS_DEFERRED
 	help
 	  This framebuffer driver supports Microsoft Hyper-V Synthetic Video.
 
+	  This driver is deprecated, please use the Hyper-V DRM driver at
+	  drivers/gpu/drm/hyperv (CONFIG_DRM_HYPERV) instead.
+
 config FB_SIMPLE
 	tristate "Simple framebuffer support"
 	depends on FB

diff --git a/drivers/video/fbdev/hyperv_fb.c b/drivers/video/fbdev/hyperv_fb.c
index 75338ffc703f..c99e2ea4b3de 100644
--- a/drivers/video/fbdev/hyperv_fb.c
+++ b/drivers/video/fbdev/hyperv_fb.c

@@ -1357,6 +1357,8 @@ static int __init hvfb_drv_init(void)
 {
 	int ret;
 
+	pr_warn("Deprecated: use Hyper-V DRM driver instead\n");
+
 	if (fb_modesetting_disabled("hyper_fb"))
 		return -ENODEV;

-- 
2.49.0

Re: [PATCH 1/2] fbdev/hyperv_fb: deprecate this in favor of Hyper-V DRM driver

From: Thomas Zimmermann <tzimmermann@suse.de>
Date: 2025-09-17 14:41:18


Am 17.09.25 um 16:03 schrieb Prasanna Kumar T S M:

The Hyper-V DRM driver is available since kernel version 5.14 and it
provides full KMS support and fbdev emulation via the DRM fbdev helpers.
Deprecate this driver in favor of Hyper-V DRM driver.

Signed-off-by: Prasanna Kumar T S M <redacted>

Acked-by: Thomas Zimmermann <tzimmermann@suse.de>

quoted hunk

---
  drivers/video/fbdev/Kconfig     | 5 ++++-
  drivers/video/fbdev/hyperv_fb.c | 2 ++
  2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/video/fbdev/Kconfig b/drivers/video/fbdev/Kconfig
index c21484d15f0c..48c1c7417f6d 100644
--- a/drivers/video/fbdev/Kconfig
+++ b/drivers/video/fbdev/Kconfig

@@ -1773,13 +1773,16 @@ config FB_BROADSHEET
  	  a bridge adapter.
  
  config FB_HYPERV
-	tristate "Microsoft Hyper-V Synthetic Video support"
+	tristate "Microsoft Hyper-V Synthetic Video support (DEPRECATED)"
  	depends on FB && HYPERV
  	select DMA_CMA if HAVE_DMA_CONTIGUOUS && CMA
  	select FB_IOMEM_HELPERS_DEFERRED
  	help
  	  This framebuffer driver supports Microsoft Hyper-V Synthetic Video.
  
+	  This driver is deprecated, please use the Hyper-V DRM driver at
+	  drivers/gpu/drm/hyperv (CONFIG_DRM_HYPERV) instead.
+
  config FB_SIMPLE
  	tristate "Simple framebuffer support"
  	depends on FB

diff --git a/drivers/video/fbdev/hyperv_fb.c b/drivers/video/fbdev/hyperv_fb.c
index 75338ffc703f..c99e2ea4b3de 100644
--- a/drivers/video/fbdev/hyperv_fb.c
+++ b/drivers/video/fbdev/hyperv_fb.c

@@ -1357,6 +1357,8 @@ static int __init hvfb_drv_init(void)
  {
  	int ret;
  
+	pr_warn("Deprecated: use Hyper-V DRM driver instead\n");
+
  	if (fb_modesetting_disabled("hyper_fb"))
  		return -ENODEV;

-- 
--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Frankenstrasse 146, 90461 Nuernberg, Germany
GF: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman
HRB 36809 (AG Nuernberg)

RE: [PATCH 1/2] fbdev/hyperv_fb: deprecate this in favor of Hyper-V DRM driver

From: Michael Kelley <hidden>
Date: 2025-09-18 04:01:21

From: Prasanna Kumar T S M <redacted> Sent: Wednesday, September 17, 2025 7:03 AM

quoted hunk

The Hyper-V DRM driver is available since kernel version 5.14 and it
provides full KMS support and fbdev emulation via the DRM fbdev helpers.
Deprecate this driver in favor of Hyper-V DRM driver.

Signed-off-by: Prasanna Kumar T S M <redacted>
---
 drivers/video/fbdev/Kconfig     | 5 ++++-
 drivers/video/fbdev/hyperv_fb.c | 2 ++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/video/fbdev/Kconfig b/drivers/video/fbdev/Kconfig
index c21484d15f0c..48c1c7417f6d 100644
--- a/drivers/video/fbdev/Kconfig
+++ b/drivers/video/fbdev/Kconfig

@@ -1773,13 +1773,16 @@ config FB_BROADSHEET
 	  a bridge adapter.

 config FB_HYPERV
-	tristate "Microsoft Hyper-V Synthetic Video support"
+	tristate "Microsoft Hyper-V Synthetic Video support (DEPRECATED)"
 	depends on FB && HYPERV
 	select DMA_CMA if HAVE_DMA_CONTIGUOUS && CMA
 	select FB_IOMEM_HELPERS_DEFERRED
 	help
 	  This framebuffer driver supports Microsoft Hyper-V Synthetic Video.

+	  This driver is deprecated, please use the Hyper-V DRM driver at
+	  drivers/gpu/drm/hyperv (CONFIG_DRM_HYPERV) instead.
+
 config FB_SIMPLE
 	tristate "Simple framebuffer support"
 	depends on FB

diff --git a/drivers/video/fbdev/hyperv_fb.c b/drivers/video/fbdev/hyperv_fb.c
index 75338ffc703f..c99e2ea4b3de 100644
--- a/drivers/video/fbdev/hyperv_fb.c
+++ b/drivers/video/fbdev/hyperv_fb.c

@@ -1357,6 +1357,8 @@ static int __init hvfb_drv_init(void)
 {
 	int ret;

+	pr_warn("Deprecated: use Hyper-V DRM driver instead\n");
+
 	if (fb_modesetting_disabled("hyper_fb"))
 		return -ENODEV;

--

2.49.0

Reviewed-by: Michael Kelley <redacted>

Re: [PATCH 1/2] fbdev/hyperv_fb: deprecate this in favor of Hyper-V DRM driver

From: Saurabh Singh Sengar <ssengar@linux.microsoft.com>
Date: 2025-09-18 08:04:59

On Wed, Sep 17, 2025 at 07:03:05AM -0700, Prasanna Kumar T S M wrote:

quoted hunk

The Hyper-V DRM driver is available since kernel version 5.14 and it
provides full KMS support and fbdev emulation via the DRM fbdev helpers.
Deprecate this driver in favor of Hyper-V DRM driver.

Signed-off-by: Prasanna Kumar T S M <redacted>
---
 drivers/video/fbdev/Kconfig     | 5 ++++-
 drivers/video/fbdev/hyperv_fb.c | 2 ++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/video/fbdev/Kconfig b/drivers/video/fbdev/Kconfig
index c21484d15f0c..48c1c7417f6d 100644
--- a/drivers/video/fbdev/Kconfig
+++ b/drivers/video/fbdev/Kconfig

@@ -1773,13 +1773,16 @@ config FB_BROADSHEET
 	  a bridge adapter.
 
 config FB_HYPERV
-	tristate "Microsoft Hyper-V Synthetic Video support"
+	tristate "Microsoft Hyper-V Synthetic Video support (DEPRECATED)"
 	depends on FB && HYPERV
 	select DMA_CMA if HAVE_DMA_CONTIGUOUS && CMA
 	select FB_IOMEM_HELPERS_DEFERRED
 	help
 	  This framebuffer driver supports Microsoft Hyper-V Synthetic Video.
 
+	  This driver is deprecated, please use the Hyper-V DRM driver at
+	  drivers/gpu/drm/hyperv (CONFIG_DRM_HYPERV) instead.
+
 config FB_SIMPLE
 	tristate "Simple framebuffer support"
 	depends on FB

diff --git a/drivers/video/fbdev/hyperv_fb.c b/drivers/video/fbdev/hyperv_fb.c
index 75338ffc703f..c99e2ea4b3de 100644
--- a/drivers/video/fbdev/hyperv_fb.c
+++ b/drivers/video/fbdev/hyperv_fb.c

@@ -1357,6 +1357,8 @@ static int __init hvfb_drv_init(void)
 {
 	int ret;
 
+	pr_warn("Deprecated: use Hyper-V DRM driver instead\n");
+
 	if (fb_modesetting_disabled("hyper_fb"))
 		return -ENODEV;

-- 
2.49.0

Thanks for the patch. I hope it makes to the next LTS as planned.

Reviewed-by: Saurabh Sengar <ssengar@linux.microsoft.com>

Re: [PATCH 1/2] fbdev/hyperv_fb: deprecate this in favor of Hyper-V DRM driver

From: Helge Deller <deller@gmx.de>
Date: 2025-09-30 19:26:33

On 9/18/25 06:01, Michael Kelley wrote:

From: Prasanna Kumar T S M <redacted> Sent: Wednesday, September 17, 2025 7:03 AM

quoted

The Hyper-V DRM driver is available since kernel version 5.14 and it
provides full KMS support and fbdev emulation via the DRM fbdev helpers.
Deprecate this driver in favor of Hyper-V DRM driver.

Signed-off-by: Prasanna Kumar T S M <redacted>
---
  drivers/video/fbdev/Kconfig     | 5 ++++-
  drivers/video/fbdev/hyperv_fb.c | 2 ++
  2 files changed, 6 insertions(+), 1 deletion(-)

Series applied to fbdev git tree.

Thanks!
Helge

`h`	back out one level
`j`	next message in thread
`k`	previous message in thread
`l`	drill in
`Esc`	close help / fold thread tree
`?`	toggle this help