* Re: OVMF and PCI0 UID
[not found] <56E4DCD4-DBA1-4A41-8568-1CBBB37ED320@protonmail.com>
@ 2020-07-20 21:25 ` Laszlo Ersek
2020-07-21 6:58 ` Michael S. Tsirkin
0 siblings, 1 reply; 5+ messages in thread
From: Laszlo Ersek @ 2020-07-20 21:25 UTC (permalink / raw)
To: vit9696; +Cc: Michael Tsirkin, Igor Mammedov, mhaeuser, qemu devel list
Hi Vitaly,
adding Igor, Michael, Marcel, and qemu-devel.
On 07/20/20 11:06, vit9696 wrote:
> Hello,
>
> I discovered an issue with inconsistent QEMU/OVMF device paths, and
> while I am unsure whether directing this e-mail is appropriate to you,
> I believe that you likely have the contacts you could forward this
> e-mail to.
>
> macOS uses ACPI UIDs to build the DevicePath for NVRAM boot options,
> while OVMF firmware gets them via an internal channel through QEMU.
> Due to a bug in QEMU (or OVMF) currently UEFI firmware and ACPI have
> different values, and this makes the underlying operating system
> unable to report its boot option.
>
> The particular node in question is the primary PciRoot (PCI0 in ACPI),
> which for some reason gets assigned 1 in ACPI UID and 0 in the
> DevicePath. To me this looks like a bug here:
> https://github.com/qemu/qemu/blob/8f06f22/hw/i386/acpi-build.c#L1511-L1515
> Which does not correspond to the primary PCI identifier here:
> https://github.com/qemu/qemu/blob/5a79d10/hw/pci/pci.c#L160-L162
>
> Reference with the device paths, OVMF startup logs, and ACPI table
> dumps (SysReport):
> https://github.com/acidanthera/bugtracker/issues/1050
>
> Would you be able to forward this to the right people or perhaps keep
> an eye on the issue itself?
I think you are right.
In UEFI v2.8, section "10.4.2 Rules with ACPI _HID and _UID" ends with
the paragraph,
Root PCI bridges will use the plug and play ID of PNP0A03, This will
be stored in the ACPI Device Path _HID field, or in the Expanded
ACPI Device Path _CID field to match the ACPI name space. The _UID
in the ACPI Device Path structure must match the _UID in the ACPI
name space.
(See especially the last sentence.)
Considering *extra* root bridges / root buses (with bus number > 0),
QEMU's ACPI generator actually does the right thing; since QEMU commit
c96d9286a6d7 ("i386/acpi-build: more traditional _UID and _HID for PXB
root buses", 2015-06-11).
However, the _UID values for root bridge zero (on both i440fx and q35)
have always been "wrong" (from UEFI perspective), going back in QEMU to
commit 74523b850189 ("i386: add ACPI table files from seabios",
2013-10-14).
Even in SeaBIOS, these _UID values have always been 1; see commit
a4d357638c57 ("Port rombios32 code from bochs-bios.", 2008-03-08) for
i440fx, and commit ecbe3fd61511 ("seabios: q35: add dsdt", 2012-12-01)
for q35.
Does the following patch work for you? (I can see you proposed the same
in
<https://github.com/acidanthera/bugtracker/issues/1050#issuecomment-660734139>)
> diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
> index b7bcbbbb2a35..7a5a8b3521b0 100644
> --- a/hw/i386/acpi-build.c
> +++ b/hw/i386/acpi-build.c
> @@ -1496,9 +1496,9 @@ build_dsdt(GArray *table_data, BIOSLinker *linker,
> sb_scope = aml_scope("_SB");
> dev = aml_device("PCI0");
> aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A03")));
> aml_append(dev, aml_name_decl("_ADR", aml_int(0)));
> - aml_append(dev, aml_name_decl("_UID", aml_int(1)));
> + aml_append(dev, aml_name_decl("_UID", aml_int(0)));
> aml_append(sb_scope, dev);
> aml_append(dsdt, sb_scope);
>
> build_hpet_aml(dsdt);
> @@ -1511,9 +1511,9 @@ build_dsdt(GArray *table_data, BIOSLinker *linker,
> dev = aml_device("PCI0");
> aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A08")));
> aml_append(dev, aml_name_decl("_CID", aml_eisaid("PNP0A03")));
> aml_append(dev, aml_name_decl("_ADR", aml_int(0)));
> - aml_append(dev, aml_name_decl("_UID", aml_int(1)));
> + aml_append(dev, aml_name_decl("_UID", aml_int(0)));
> aml_append(dev, build_q35_osc_method());
> aml_append(sb_scope, dev);
> aml_append(dsdt, sb_scope);
If it does, I suggest submitting the above patch to qemu-devel, and/or
filing a bug for upstream QEMU at <https://bugs.launchpad.net/qemu/>.
(Note: I didn't even compile the above change.)
Thanks
Laszlo
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: OVMF and PCI0 UID
2020-07-20 21:25 ` OVMF and PCI0 UID Laszlo Ersek
@ 2020-07-21 6:58 ` Michael S. Tsirkin
2020-07-21 9:24 ` vit9696
0 siblings, 1 reply; 5+ messages in thread
From: Michael S. Tsirkin @ 2020-07-21 6:58 UTC (permalink / raw)
To: Laszlo Ersek; +Cc: Igor Mammedov, mhaeuser, vit9696, qemu devel list
On Mon, Jul 20, 2020 at 11:25:58PM +0200, Laszlo Ersek wrote:
> Hi Vitaly,
>
> adding Igor, Michael, Marcel, and qemu-devel.
>
> On 07/20/20 11:06, vit9696 wrote:
> > Hello,
> >
> > I discovered an issue with inconsistent QEMU/OVMF device paths, and
> > while I am unsure whether directing this e-mail is appropriate to you,
> > I believe that you likely have the contacts you could forward this
> > e-mail to.
> >
> > macOS uses ACPI UIDs to build the DevicePath for NVRAM boot options,
> > while OVMF firmware gets them via an internal channel through QEMU.
> > Due to a bug in QEMU (or OVMF) currently UEFI firmware and ACPI have
> > different values, and this makes the underlying operating system
> > unable to report its boot option.
> >
> > The particular node in question is the primary PciRoot (PCI0 in ACPI),
> > which for some reason gets assigned 1 in ACPI UID and 0 in the
> > DevicePath. To me this looks like a bug here:
> > https://github.com/qemu/qemu/blob/8f06f22/hw/i386/acpi-build.c#L1511-L1515
> > Which does not correspond to the primary PCI identifier here:
> > https://github.com/qemu/qemu/blob/5a79d10/hw/pci/pci.c#L160-L162
> >
> > Reference with the device paths, OVMF startup logs, and ACPI table
> > dumps (SysReport):
> > https://github.com/acidanthera/bugtracker/issues/1050
> >
> > Would you be able to forward this to the right people or perhaps keep
> > an eye on the issue itself?
>
> I think you are right.
>
> In UEFI v2.8, section "10.4.2 Rules with ACPI _HID and _UID" ends with
> the paragraph,
>
> Root PCI bridges will use the plug and play ID of PNP0A03, This will
> be stored in the ACPI Device Path _HID field, or in the Expanded
> ACPI Device Path _CID field to match the ACPI name space. The _UID
> in the ACPI Device Path structure must match the _UID in the ACPI
> name space.
>
> (See especially the last sentence.)
>
> Considering *extra* root bridges / root buses (with bus number > 0),
> QEMU's ACPI generator actually does the right thing; since QEMU commit
> c96d9286a6d7 ("i386/acpi-build: more traditional _UID and _HID for PXB
> root buses", 2015-06-11).
>
> However, the _UID values for root bridge zero (on both i440fx and q35)
> have always been "wrong" (from UEFI perspective), going back in QEMU to
> commit 74523b850189 ("i386: add ACPI table files from seabios",
> 2013-10-14).
>
> Even in SeaBIOS, these _UID values have always been 1; see commit
> a4d357638c57 ("Port rombios32 code from bochs-bios.", 2008-03-08) for
> i440fx, and commit ecbe3fd61511 ("seabios: q35: add dsdt", 2012-12-01)
> for q35.
>
> Does the following patch work for you? (I can see you proposed the same
> in
> <https://github.com/acidanthera/bugtracker/issues/1050#issuecomment-660734139>)
>
> > diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
> > index b7bcbbbb2a35..7a5a8b3521b0 100644
> > --- a/hw/i386/acpi-build.c
> > +++ b/hw/i386/acpi-build.c
> > @@ -1496,9 +1496,9 @@ build_dsdt(GArray *table_data, BIOSLinker *linker,
> > sb_scope = aml_scope("_SB");
> > dev = aml_device("PCI0");
> > aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A03")));
> > aml_append(dev, aml_name_decl("_ADR", aml_int(0)));
> > - aml_append(dev, aml_name_decl("_UID", aml_int(1)));
> > + aml_append(dev, aml_name_decl("_UID", aml_int(0)));
> > aml_append(sb_scope, dev);
> > aml_append(dsdt, sb_scope);
> >
> > build_hpet_aml(dsdt);
> > @@ -1511,9 +1511,9 @@ build_dsdt(GArray *table_data, BIOSLinker *linker,
> > dev = aml_device("PCI0");
> > aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A08")));
> > aml_append(dev, aml_name_decl("_CID", aml_eisaid("PNP0A03")));
> > aml_append(dev, aml_name_decl("_ADR", aml_int(0)));
> > - aml_append(dev, aml_name_decl("_UID", aml_int(1)));
> > + aml_append(dev, aml_name_decl("_UID", aml_int(0)));
> > aml_append(dev, build_q35_osc_method());
> > aml_append(sb_scope, dev);
> > aml_append(dsdt, sb_scope);
>
> If it does, I suggest submitting the above patch to qemu-devel, and/or
> filing a bug for upstream QEMU at <https://bugs.launchpad.net/qemu/>.
Or even just reporting whether the above helps you, we can
take it from there.
> (Note: I didn't even compile the above change.)
>
> Thanks
> Laszlo
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: OVMF and PCI0 UID
2020-07-21 6:58 ` Michael S. Tsirkin
@ 2020-07-21 9:24 ` vit9696
2020-07-22 13:53 ` vit9696 via
0 siblings, 1 reply; 5+ messages in thread
From: vit9696 @ 2020-07-21 9:24 UTC (permalink / raw)
To: Michael S. Tsirkin, Laszlo Ersek
Cc: mhaeuser, Igor Mammedov, Marcel Apfelbaum, qemu devel list
[-- Attachment #1.1: Type: text/plain, Size: 5700 bytes --]
Thank you, we will provide an update whether this solves the problem.
Besides, this is not the only case where UIDs are wrong for the PCI bus. In hw/arm/virt-acpi-build.c there is the following code:
Aml *dev = aml_device("%s", "PCI0");
aml_append(dev, aml_name_decl("_HID", aml_string("PNP0A08")));
aml_append(dev, aml_name_decl("_CID", aml_string("PNP0A03")));
aml_append(dev, aml_name_decl("_SEG", aml_int(0)));
aml_append(dev, aml_name_decl("_BBN", aml_int(0)));
aml_append(dev, aml_name_decl("_ADR", aml_int(0)));
aml_append(dev, aml_name_decl("_UID", aml_string("PCI0")));
aml_append(dev, aml_name_decl("_STR", aml_unicode("PCIe 0 Device")));
aml_append(dev, aml_name_decl("_CCA", aml_int(1)));
https://github.com/qemu/qemu/blob/2c1fb4d/hw/arm/virt-acpi-build.c#L168-L175 <https://github.com/qemu/qemu/blob/2c1fb4d/hw/arm/virt-acpi-build.c#L168-L175>
It makes UID on ARM builds a string, which is certainly not expected. We do not have ARM test setups, but I hope this can be useful too.
Best wishes,
Vitaly
> 21 июля 2020 г., в 09:58, Michael S. Tsirkin <mst@redhat.com> написал(а):
>
>
> On Mon, Jul 20, 2020 at 11:25:58PM +0200, Laszlo Ersek wrote:
>> Hi Vitaly,
>>
>> adding Igor, Michael, Marcel, and qemu-devel.
>>
>> On 07/20/20 11:06, vit9696 wrote:
>>> Hello,
>>>
>>> I discovered an issue with inconsistent QEMU/OVMF device paths, and
>>> while I am unsure whether directing this e-mail is appropriate to you,
>>> I believe that you likely have the contacts you could forward this
>>> e-mail to.
>>>
>>> macOS uses ACPI UIDs to build the DevicePath for NVRAM boot options,
>>> while OVMF firmware gets them via an internal channel through QEMU.
>>> Due to a bug in QEMU (or OVMF) currently UEFI firmware and ACPI have
>>> different values, and this makes the underlying operating system
>>> unable to report its boot option.
>>>
>>> The particular node in question is the primary PciRoot (PCI0 in ACPI),
>>> which for some reason gets assigned 1 in ACPI UID and 0 in the
>>> DevicePath. To me this looks like a bug here:
>>> https://github.com/qemu/qemu/blob/8f06f22/hw/i386/acpi-build.c#L1511-L1515
>>> Which does not correspond to the primary PCI identifier here:
>>> https://github.com/qemu/qemu/blob/5a79d10/hw/pci/pci.c#L160-L162
>>>
>>> Reference with the device paths, OVMF startup logs, and ACPI table
>>> dumps (SysReport):
>>> https://github.com/acidanthera/bugtracker/issues/1050
>>>
>>> Would you be able to forward this to the right people or perhaps keep
>>> an eye on the issue itself?
>>
>> I think you are right.
>>
>> In UEFI v2.8, section "10.4.2 Rules with ACPI _HID and _UID" ends with
>> the paragraph,
>>
>> Root PCI bridges will use the plug and play ID of PNP0A03, This will
>> be stored in the ACPI Device Path _HID field, or in the Expanded
>> ACPI Device Path _CID field to match the ACPI name space. The _UID
>> in the ACPI Device Path structure must match the _UID in the ACPI
>> name space.
>>
>> (See especially the last sentence.)
>>
>> Considering *extra* root bridges / root buses (with bus number > 0),
>> QEMU's ACPI generator actually does the right thing; since QEMU commit
>> c96d9286a6d7 ("i386/acpi-build: more traditional _UID and _HID for PXB
>> root buses", 2015-06-11).
>>
>> However, the _UID values for root bridge zero (on both i440fx and q35)
>> have always been "wrong" (from UEFI perspective), going back in QEMU to
>> commit 74523b850189 ("i386: add ACPI table files from seabios",
>> 2013-10-14).
>>
>> Even in SeaBIOS, these _UID values have always been 1; see commit
>> a4d357638c57 ("Port rombios32 code from bochs-bios.", 2008-03-08) for
>> i440fx, and commit ecbe3fd61511 ("seabios: q35: add dsdt", 2012-12-01)
>> for q35.
>>
>> Does the following patch work for you? (I can see you proposed the same
>> in
>> <https://github.com/acidanthera/bugtracker/issues/1050#issuecomment-660734139>)
>>
>>> diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
>>> index b7bcbbbb2a35..7a5a8b3521b0 100644
>>> --- a/hw/i386/acpi-build.c
>>> +++ b/hw/i386/acpi-build.c
>>> @@ -1496,9 +1496,9 @@ build_dsdt(GArray *table_data, BIOSLinker *linker,
>>> sb_scope = aml_scope("_SB");
>>> dev = aml_device("PCI0");
>>> aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A03")));
>>> aml_append(dev, aml_name_decl("_ADR", aml_int(0)));
>>> - aml_append(dev, aml_name_decl("_UID", aml_int(1)));
>>> + aml_append(dev, aml_name_decl("_UID", aml_int(0)));
>>> aml_append(sb_scope, dev);
>>> aml_append(dsdt, sb_scope);
>>>
>>> build_hpet_aml(dsdt);
>>> @@ -1511,9 +1511,9 @@ build_dsdt(GArray *table_data, BIOSLinker *linker,
>>> dev = aml_device("PCI0");
>>> aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A08")));
>>> aml_append(dev, aml_name_decl("_CID", aml_eisaid("PNP0A03")));
>>> aml_append(dev, aml_name_decl("_ADR", aml_int(0)));
>>> - aml_append(dev, aml_name_decl("_UID", aml_int(1)));
>>> + aml_append(dev, aml_name_decl("_UID", aml_int(0)));
>>> aml_append(dev, build_q35_osc_method());
>>> aml_append(sb_scope, dev);
>>> aml_append(dsdt, sb_scope);
>>
>> If it does, I suggest submitting the above patch to qemu-devel, and/or
>> filing a bug for upstream QEMU at <https://bugs.launchpad.net/qemu/>.
>
> Or even just reporting whether the above helps you, we can
> take it from there.
>
>> (Note: I didn't even compile the above change.)
>>
>> Thanks
>> Laszlo
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^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: OVMF and PCI0 UID
2020-07-21 9:24 ` vit9696
@ 2020-07-22 13:53 ` vit9696 via
2020-07-30 15:59 ` Michael S. Tsirkin
0 siblings, 1 reply; 5+ messages in thread
From: vit9696 via @ 2020-07-22 13:53 UTC (permalink / raw)
To: Michael S. Tsirkin, Laszlo Ersek
Cc: mhaeuser, Igor Mammedov, Marcel Apfelbaum, qemu devel list
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^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: OVMF and PCI0 UID
2020-07-22 13:53 ` vit9696 via
@ 2020-07-30 15:59 ` Michael S. Tsirkin
0 siblings, 0 replies; 5+ messages in thread
From: Michael S. Tsirkin @ 2020-07-30 15:59 UTC (permalink / raw)
To: vit9696; +Cc: Igor Mammedov, mhaeuser, Laszlo Ersek, qemu devel list
Thanks, I sent the patches on the list now!
On Wed, Jul 22, 2020 at 01:53:23PM +0000, vit9696 via wrote:
> Hello,
>
> We can confirm that the suggested change to zero UIDs resolves the problem. It
> will be great if you could handle the rest as you see fit. Thank you!
>
> Best regards,
> Vitaly
>
>
> В вт, июля 21, 2020 в 12:24, vit9696 <vit9696@protonmail.com> пишет:
>
> Thank you, we will provide an update whether this solves the problem.
>
> Besides, this is not the only case where UIDs are wrong for the PCI bus.
> In hw/arm/virt-acpi-build.c there is the following code:
>
> Aml *dev = aml_device("%s", "PCI0");
> aml_append(dev, aml_name_decl("_HID", aml_string("PNP0A08")));
> aml_append(dev, aml_name_decl("_CID", aml_string("PNP0A03")));
> aml_append(dev, aml_name_decl("_SEG", aml_int(0)));
> aml_append(dev, aml_name_decl("_BBN", aml_int(0)));
> aml_append(dev, aml_name_decl("_ADR", aml_int(0)));
> aml_append(dev, aml_name_decl("_UID", aml_string("PCI0")));
> aml_append(dev, aml_name_decl("_STR", aml_unicode("PCIe 0 Device")));
> aml_append(dev, aml_name_decl("_CCA", aml_int(1)));
>
> https://github.com/qemu/qemu/blob/2c1fb4d/hw/arm/virt-acpi-build.c#
> L168-L175
>
> It makes UID on ARM builds a string, which is certainly not expected. We do
> not have ARM test setups, but I hope this can be useful too.
>
> Best wishes,
> Vitaly
>
>
> 21 июля 2020 г., в 09:58, Michael S. Tsirkin <mst@redhat.com> написал
> (а):
>
>
> On Mon, Jul 20, 2020 at 11:25:58PM +0200, Laszlo Ersek wrote:
>
> Hi Vitaly,
>
> adding Igor, Michael, Marcel, and qemu-devel.
>
> On 07/20/20 11:06, vit9696 wrote:
>
> Hello,
>
> I discovered an issue with inconsistent QEMU/OVMF device paths,
> and
> while I am unsure whether directing this e-mail is appropriate
> to you,
> I believe that you likely have the contacts you could forward
> this
> e-mail to.
>
> macOS uses ACPI UIDs to build the DevicePath for NVRAM boot
> options,
> while OVMF firmware gets them via an internal channel through
> QEMU.
> Due to a bug in QEMU (or OVMF) currently UEFI firmware and ACPI
> have
> different values, and this makes the underlying operating
> system
> unable to report its boot option.
>
> The particular node in question is the primary PciRoot (PCI0 in
> ACPI),
> which for some reason gets assigned 1 in ACPI UID and 0 in the
> DevicePath. To me this looks like a bug here:
> https://github.com/qemu/qemu/blob/8f06f22/hw/i386/acpi-build.c#
> L1511-L1515
> Which does not correspond to the primary PCI identifier here:
> https://github.com/qemu/qemu/blob/5a79d10/hw/pci/pci.c#
> L160-L162
>
> Reference with the device paths, OVMF startup logs, and ACPI
> table
> dumps (SysReport):
> https://github.com/acidanthera/bugtracker/issues/1050
>
> Would you be able to forward this to the right people or
> perhaps keep
> an eye on the issue itself?
>
>
> I think you are right.
>
> In UEFI v2.8, section "10.4.2 Rules with ACPI _HID and _UID" ends
> with
> the paragraph,
>
> Root PCI bridges will use the plug and play ID of PNP0A03, This
> will
> be stored in the ACPI Device Path _HID field, or in the Expanded
> ACPI Device Path _CID field to match the ACPI name space. The
> _UID
> in the ACPI Device Path structure must match the _UID in the
> ACPI
> name space.
>
> (See especially the last sentence.)
>
> Considering *extra* root bridges / root buses (with bus number >
> 0),
> QEMU's ACPI generator actually does the right thing; since QEMU
> commit
> c96d9286a6d7 ("i386/acpi-build: more traditional _UID and _HID for
> PXB
> root buses", 2015-06-11).
>
> However, the _UID values for root bridge zero (on both i440fx and
> q35)
> have always been "wrong" (from UEFI perspective), going back in
> QEMU to
> commit 74523b850189 ("i386: add ACPI table files from seabios",
> 2013-10-14).
>
> Even in SeaBIOS, these _UID values have always been 1; see commit
> a4d357638c57 ("Port rombios32 code from bochs-bios.", 2008-03-08)
> for
> i440fx, and commit ecbe3fd61511 ("seabios: q35: add dsdt",
> 2012-12-01)
> for q35.
>
> Does the following patch work for you? (I can see you proposed the
> same
> in
> <https://github.com/acidanthera/bugtracker/issues/1050
> issuecomment-660734139>)
>
>
> diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
> index b7bcbbbb2a35..7a5a8b3521b0 100644
> --- a/hw/i386/acpi-build.c
> +++ b/hw/i386/acpi-build.c
> @@ -1496,9 +1496,9 @@ build_dsdt(GArray *table_data, BIOSLinker
> *linker,
> sb_scope = aml_scope("_SB");
> dev = aml_device("PCI0");
> aml_append(dev, aml_name_decl("_HID", aml_eisaid
> ("PNP0A03")));
> aml_append(dev, aml_name_decl("_ADR", aml_int(0)));
> - aml_append(dev, aml_name_decl("_UID", aml_int(1)));
> + aml_append(dev, aml_name_decl("_UID", aml_int(0)));
> aml_append(sb_scope, dev);
> aml_append(dsdt, sb_scope);
>
> build_hpet_aml(dsdt);
> @@ -1511,9 +1511,9 @@ build_dsdt(GArray *table_data, BIOSLinker
> *linker,
> dev = aml_device("PCI0");
> aml_append(dev, aml_name_decl("_HID", aml_eisaid
> ("PNP0A08")));
> aml_append(dev, aml_name_decl("_CID", aml_eisaid
> ("PNP0A03")));
> aml_append(dev, aml_name_decl("_ADR", aml_int(0)));
> - aml_append(dev, aml_name_decl("_UID", aml_int(1)));
> + aml_append(dev, aml_name_decl("_UID", aml_int(0)));
> aml_append(dev, build_q35_osc_method());
> aml_append(sb_scope, dev);
> aml_append(dsdt, sb_scope);
>
>
> If it does, I suggest submitting the above patch to qemu-devel, and
> /or
> filing a bug for upstream QEMU at <https://bugs.launchpad.net/qemu/
> >.
>
>
> Or even just reporting whether the above helps you, we can
> take it from there.
>
>
> (Note: I didn't even compile the above change.)
>
> Thanks
> Laszlo
>
>
>
>
>
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2020-07-30 16:02 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
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2020-07-20 21:25 ` OVMF and PCI0 UID Laszlo Ersek
2020-07-21 6:58 ` Michael S. Tsirkin
2020-07-21 9:24 ` vit9696
2020-07-22 13:53 ` vit9696 via
2020-07-30 15:59 ` Michael S. Tsirkin
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