AuxXxilium/linux_dsm_epyc7002
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linux_dsm_epyc7002/drivers/video
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Ard Biesheuvel c2999c281e efifb: Omit memory map check on legacy boot 
Since the following commit:

  38ac0287b7 ("fbdev/efifb: Honour UEFI memory map attributes when mapping the FB")

efifb_probe() checks its memory range via efi_mem_desc_lookup(),
and this leads to a spurious error message:

   EFI_MEMMAP is not enabled

at every boot on KVM.  This is quite annoying since the error message
appears even if you set "quiet" boot option.

Since this happens on legacy boot, which strangely enough exposes
a EFI framebuffer via screen_info, let's double check that we are
doing an EFI boot before attempting to access the EFI memory map.

Reported-by: Takashi Iwai <tiwai@suse.de>
Tested-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Peter Jones <pjones@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-efi@vger.kernel.org
Link: http://lkml.kernel.org/r/20190328193429.21373-3-ard.biesheuvel@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-03-29 07:34:59 +01:00
..
backlight backlight: pwm_bl: Use gpiod_get_value_cansleep() to get initial state 2019-01-30 13:37:42 +00:00
console vgacon: unconfuse vc_origin when using soft scrollback 2019-01-18 13:45:22 +01:00
fbdev efifb: Omit memory map check on legacy boot 2019-03-29 07:34:59 +01:00
logo fbdev: fbmem: convert CONFIG_FB_LOGO_CENTER into a cmd line option 2019-01-16 17:42:35 +01:00
display_timing.c
hdmi.c drm-misc-next for v4.21, part 1: 2018-11-19 10:40:33 +10:00
Kconfig fbdev changes for v4.17: 2018-04-10 10:20:00 -07:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
of_display_timing.c fbdev: Convert to using %pOFn instead of device_node.name 2018-10-08 12:57:36 +02:00
of_videomode.c video: fbdev: Convert to using %pOF instead of full_name 2017-08-07 17:22:13 +02:00
vgastate.c Video: vgastate: fixed a spacing coding style 2018-10-08 12:57:35 +02:00
videomode.c