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From: Thomas Zimmermann <tzimmermann@suse.de>
To: simona@ffwll.ch, airlied@gmail.com, mdaenzer@redhat.com,
	pekka.paalanen@collabora.com, jadahl@gmail.com,
	contact@emersion.fr, maarten.lankhorst@linux.intel.com,
	mripard@kernel.org
Cc: amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
	linux-hyperv@vger.kernel.org, virtualization@lists.linux.dev,
	spice-devel@lists.freedesktop.org,
	Thomas Zimmermann <tzimmermann@suse.de>
Subject: [PATCH 3/9] drm/amdgpu: vkms: Set DRM_VBLANK_FLAG_SIMULATED
Date: Fri, 15 May 2026 13:55:08 +0200	[thread overview]
Message-ID: <20260515120916.333614-4-tzimmermann@suse.de> (raw)
In-Reply-To: <20260515120916.333614-1-tzimmermann@suse.de>

Mark the vblank event on amdgpu's vkms as simulated, so that the
WAIT_VBLANK ioctl fails with an error. The ioctl should not be
supported because the output is not synchronized to a display refresh.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_vkms.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vkms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vkms.c
index 170adaf7e76a..bc88acc819a6 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vkms.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vkms.c
@@ -413,7 +413,8 @@ static int amdgpu_vkms_sw_init(struct amdgpu_ip_block *ip_block)
 			return r;
 	}
 
-	r = drm_vblank_init(adev_to_drm(adev), adev->mode_info.num_crtc);
+	r = drmm_vblank_init(adev_to_drm(adev), adev->mode_info.num_crtc,
+			     DRM_VBLANK_FLAG_SIMULATED);
 	if (r)
 		return r;
 
-- 
2.54.0


  parent reply	other threads:[~2026-05-15 12:09 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-05-15 11:55 [PATCH 0/9] drm: Limit DRM_IOCTL_WAIT_VBLANK to vblank interrupts Thomas Zimmermann
2026-05-15 11:55 ` [PATCH 1/9] drm/vblank: Add drmm_vblank_init() to indicate managed cleanup Thomas Zimmermann
2026-05-15 11:55 ` [PATCH 2/9] drm/vblank: Add DRM_VBLANK_FLAG_SIMULATED Thomas Zimmermann
2026-05-15 11:55 ` Thomas Zimmermann [this message]
2026-05-15 11:55 ` [PATCH 4/9] drm/bochs: Set DRM_VBLANK_FLAG_SIMULATED Thomas Zimmermann
2026-05-15 11:55 ` [PATCH 5/9] drm/cirrus: " Thomas Zimmermann
2026-05-15 11:55 ` [PATCH 6/9] drm/hypervdrm: " Thomas Zimmermann
2026-05-15 11:55 ` [PATCH 7/9] drm/qxl: " Thomas Zimmermann
2026-05-15 11:55 ` [PATCH 8/9] drm/virtgpu: " Thomas Zimmermann
2026-05-15 11:55 ` [PATCH 9/9] drm/vkms: " Thomas Zimmermann
2026-05-15 15:12 ` [PATCH 0/9] drm: Limit DRM_IOCTL_WAIT_VBLANK to vblank interrupts Michel Dänzer
2026-05-15 16:56   ` Michel Dänzer

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