> -----Original Message----- > From: Gerd Hoffmann [mailto:kraxel@xxxxxxxxxx] > Sent: Tuesday, February 25, 2014 7:29 AM > To: linux-fbdev@xxxxxxxxxxxxxxx > Cc: linux-kernel@xxxxxxxxxxxxxxx; gregkh@xxxxxxxxxxxxxxxxxxx; KY Srinivasan; > Abhishek Gupta (LIS); Haiyang Zhang; jasowang@xxxxxxxxxx; > tomi.valkeinen@xxxxxx; devel@xxxxxxxxxxxxxxxxxxxxxx; Gerd Hoffmann; Jean- > Christophe Plagniol-Villard > Subject: [PATCH v4 2/2] hyperv-fb: kick off efifb early > > Remove firmware framebuffer before initializing hyperv-fb. Needed > on gen2 virtual machines. Letting register_framebuffer handle the > switchover results in efifb still being active while hyperv graphics are > initialized, which in turn can make the linux kernel hang. > > Signed-off-by: Gerd Hoffmann <kraxel@xxxxxxxxxx> > --- > drivers/video/hyperv_fb.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/drivers/video/hyperv_fb.c b/drivers/video/hyperv_fb.c index > b7b3dd0..1b11886 100644 > --- a/drivers/video/hyperv_fb.c > +++ b/drivers/video/hyperv_fb.c > @@ -683,6 +683,7 @@ static int hvfb_getmem(struct fb_info *info) > info->apertures->ranges[0].base = pci_resource_start(pdev, 0); > info->apertures->ranges[0].size = pci_resource_len(pdev, 0); > } > + remove_conflicting_framebuffers(info->apertures, > KBUILD_MODNAME, > +false); Thanks for the updates. I'm concerned about, after removing efifb, if synthvid_send_config(hdev) fails, then there will be no video driver available. Is there a way to bring the generic driver back if synthvid_send_config(hdev) fails? If no way to recover the generic driver, please limit the early remove_conflicting_framebuffers() to Gen2 VM only. Thanks, - Haiyang _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
