[ added EFI Maintainer & ML to Cc: ]
Hi,
On 7/9/20 11:17 AM, Jürgen Groß wrote:
> On 28.06.20 10:50, Jürgen Groß wrote:
>> Ping?
>>
>> On 10.06.20 16:10, Juergen Gross wrote:
>>> efifb_probe() will issue an error message in case the kernel is booted
>>> as Xen dom0 from UEFI as EFI_MEMMAP won't be set in this case. Avoid
>>> that message by calling efi_mem_desc_lookup() only if EFI_PARAVIRT
>>> isn't set.
>>>
>>> Fixes: 38ac0287b7f4 ("fbdev/efifb: Honour UEFI memory map attributes when mapping the FB")
>>> Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
>>> ---
>>> drivers/video/fbdev/efifb.c | 2 +-
>>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>>
>>> diff --git a/drivers/video/fbdev/efifb.c b/drivers/video/fbdev/efifb.c
>>> index 65491ae74808..f5eccd1373e9 100644
>>> --- a/drivers/video/fbdev/efifb.c
>>> +++ b/drivers/video/fbdev/efifb.c
>>> @@ -453,7 +453,7 @@ static int efifb_probe(struct platform_device *dev)
>>> info->apertures->ranges[0].base = efifb_fix.smem_start;
>>> info->apertures->ranges[0].size = size_remap;
>>> - if (efi_enabled(EFI_BOOT) &&
>>> + if (efi_enabled(EFI_BOOT) && !efi_enabled(EFI_PARAVIRT) &&
>>> !efi_mem_desc_lookup(efifb_fix.smem_start, &md)) {
>>> if ((efifb_fix.smem_start + efifb_fix.smem_len) >
>>> (md.phys_addr + (md.num_pages << EFI_PAGE_SHIFT))) {
>>>
>>
>
> In case I see no reaction from the maintainer for another week I'll take
> this patch through the Xen tree.
>From fbdev POV this change looks fine to me and I'm OK with merging it
through Xen or EFI tree:
Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@xxxxxxxxxxx>
Best regards,
--
Bartlomiej Zolnierkiewicz
Samsung R&D Institute Poland
Samsung Electronics
