* [PATCH] efi: avoid error message when booting under Xen
@ 2020-06-10 14:10 Juergen Gross
2020-06-28 8:50 ` Jürgen Groß
0 siblings, 1 reply; 7+ messages in thread
From: Juergen Gross @ 2020-06-10 14:10 UTC (permalink / raw)
To: xen-devel, linux-fbdev, dri-devel, linux-kernel
Cc: Juergen Gross, Peter Jones, Bartlomiej Zolnierkiewicz
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@suse.com>
---
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))) {
--
2.26.2
^ permalink raw reply related [flat|nested] 7+ messages in thread
* Re: [PATCH] efi: avoid error message when booting under Xen
2020-06-10 14:10 [PATCH] efi: avoid error message when booting under Xen Juergen Gross
@ 2020-06-28 8:50 ` Jürgen Groß
2020-07-09 9:17 ` Jürgen Groß
0 siblings, 1 reply; 7+ messages in thread
From: Jürgen Groß @ 2020-06-28 8:50 UTC (permalink / raw)
To: xen-devel, linux-fbdev, dri-devel, linux-kernel
Cc: Peter Jones, Bartlomiej Zolnierkiewicz
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@suse.com>
> ---
> 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))) {
>
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH] efi: avoid error message when booting under Xen
2020-06-28 8:50 ` Jürgen Groß
@ 2020-07-09 9:17 ` Jürgen Groß
2020-07-10 10:16 ` Bartlomiej Zolnierkiewicz
0 siblings, 1 reply; 7+ messages in thread
From: Jürgen Groß @ 2020-07-09 9:17 UTC (permalink / raw)
To: xen-devel, linux-fbdev, dri-devel, linux-kernel
Cc: Peter Jones, Bartlomiej Zolnierkiewicz
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@suse.com>
>> ---
>> 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.
Juergen
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH] efi: avoid error message when booting under Xen
2020-07-09 9:17 ` Jürgen Groß
@ 2020-07-10 10:16 ` Bartlomiej Zolnierkiewicz
2020-07-10 13:27 ` Ard Biesheuvel
0 siblings, 1 reply; 7+ messages in thread
From: Bartlomiej Zolnierkiewicz @ 2020-07-10 10:16 UTC (permalink / raw)
To: Jürgen Groß
Cc: xen-devel, linux-fbdev, dri-devel, linux-kernel, Peter Jones,
Ard Biesheuvel, linux-efi
[ 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@suse.com>
>>> ---
>>> 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@samsung.com>
Best regards,
--
Bartlomiej Zolnierkiewicz
Samsung R&D Institute Poland
Samsung Electronics
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH] efi: avoid error message when booting under Xen
2020-07-10 10:16 ` Bartlomiej Zolnierkiewicz
@ 2020-07-10 13:27 ` Ard Biesheuvel
2020-07-10 13:38 ` Jürgen Groß
0 siblings, 1 reply; 7+ messages in thread
From: Ard Biesheuvel @ 2020-07-10 13:27 UTC (permalink / raw)
To: Bartlomiej Zolnierkiewicz
Cc: Jürgen Groß,
xen-devel, linux-fbdev, dri-devel, Linux Kernel Mailing List,
Peter Jones, linux-efi
On Fri, 10 Jul 2020 at 13:17, Bartlomiej Zolnierkiewicz
<b.zolnierkie@samsung.com> wrote:
>
>
> [ 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.
> >>>
Why not test for EFI_MEMMAP instead of EFI_BOOT?
> >>> Fixes: 38ac0287b7f4 ("fbdev/efifb: Honour UEFI memory map attributes when mapping the FB")
> >>> Signed-off-by: Juergen Gross <jgross@suse.com>
> >>> ---
> >>> 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@samsung.com>
>
> Best regards,
> --
> Bartlomiej Zolnierkiewicz
> Samsung R&D Institute Poland
> Samsung Electronics
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH] efi: avoid error message when booting under Xen
2020-07-10 13:27 ` Ard Biesheuvel
@ 2020-07-10 13:38 ` Jürgen Groß
2020-07-10 13:41 ` Ard Biesheuvel
0 siblings, 1 reply; 7+ messages in thread
From: Jürgen Groß @ 2020-07-10 13:38 UTC (permalink / raw)
To: Ard Biesheuvel, Bartlomiej Zolnierkiewicz
Cc: xen-devel, linux-fbdev, dri-devel, Linux Kernel Mailing List,
Peter Jones, linux-efi
On 10.07.20 15:27, Ard Biesheuvel wrote:
> On Fri, 10 Jul 2020 at 13:17, Bartlomiej Zolnierkiewicz
> <b.zolnierkie@samsung.com> wrote:
>>
>>
>> [ 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.
>>>>>
>
> Why not test for EFI_MEMMAP instead of EFI_BOOT?
Honestly I'm not sure EFI_BOOT is always set in that case. If you tell
me it is fine to just replace the test to check for EFI_MEMMAP I'm fine
to modify my patch.
Juergen
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH] efi: avoid error message when booting under Xen
2020-07-10 13:38 ` Jürgen Groß
@ 2020-07-10 13:41 ` Ard Biesheuvel
0 siblings, 0 replies; 7+ messages in thread
From: Ard Biesheuvel @ 2020-07-10 13:41 UTC (permalink / raw)
To: Jürgen Groß
Cc: Bartlomiej Zolnierkiewicz, xen-devel, linux-fbdev, dri-devel,
Linux Kernel Mailing List, Peter Jones, linux-efi
On Fri, 10 Jul 2020 at 16:38, Jürgen Groß <jgross@suse.com> wrote:
>
> On 10.07.20 15:27, Ard Biesheuvel wrote:
> > On Fri, 10 Jul 2020 at 13:17, Bartlomiej Zolnierkiewicz
> > <b.zolnierkie@samsung.com> wrote:
> >>
> >>
> >> [ 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.
> >>>>>
> >
> > Why not test for EFI_MEMMAP instead of EFI_BOOT?
>
> Honestly I'm not sure EFI_BOOT is always set in that case. If you tell
> me it is fine to just replace the test to check for EFI_MEMMAP I'm fine
> to modify my patch.
>
Yes please
^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2020-07-10 13:41 UTC | newest]
Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
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2020-06-10 14:10 [PATCH] efi: avoid error message when booting under Xen Juergen Gross
2020-06-28 8:50 ` Jürgen Groß
2020-07-09 9:17 ` Jürgen Groß
2020-07-10 10:16 ` Bartlomiej Zolnierkiewicz
2020-07-10 13:27 ` Ard Biesheuvel
2020-07-10 13:38 ` Jürgen Groß
2020-07-10 13:41 ` Ard Biesheuvel
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